Operation STANDOFF represents a complex, multi-operator intrusion campaign characterized by the abuse of legitimate infrastructure (GitHub) for C2 redirection. The campaign leverages a pay-per-install (PPI) ecosystem to distribute a payload chain including SmokeLoader, which serves as a gateway for info-stealers (Raccoon, RedLine, Amadey) and the Glupteba botnet. The ultimate objectives are credential theft, cryptocurrency mining via XMRig, and enrolling victims into a proxy-botnet to facilitate further malicious operations. Infrastructure analysis reveals heavy reliance on the Russian provider TimeWeb, with specific indicators pointing to active domains and IPs involved in the C2 mesh.
Threat Actor / Malware Profile
Actor: Operation STANDOFF (Russian-speaking) Infrastructure: TimeWeb AS, GitHub (for redirect obfuscation)
Malware Families & Behaviors:
- SmokeLoader: A modular downloader often delivered via PPI services. It establishes persistence through Registry Run keys or Scheduled Tasks and injects code into legitimate processes (e.g.,
explorer.exe) to evade detection. - Raccoon Stealer / RedLine: Information stealers that harvest browser credentials, cookies, autocomplete data, and cryptocurrency wallet information. They typically exfiltrate data via HTTP POST to C2 servers.
- Glupteba: A versatile botnet malware that utilizes a proxy component to route malicious traffic. It is known for leveraging the Bitcoin blockchain to update C2 addresses, making takedowns difficult. In this campaign, it facilitates the proxy-botnet enrollment.
- XMRig: A legitimate open-source Monero miner modified and integrated into the payload chain to generate illicit revenue using victim CPU resources.
IOC Analysis
The provided indicators offer high-fidelity detection opportunities:
- Network Infrastructure: Several IPv4 addresses (e.g.,
188.225.72.157,212.192.241.62) belong to the TimeWeb ISP, a frequent host for Eastern European cybercrime operations. Blocking these AS ranges is critical. - Domains: Domains like
wfsdragon.ruandlistincode.comserve as C2 endpoints or droppers. - CVE Reference: The inclusion of
CVE-2021-34527(PrintNightmare) suggests the potential use of exploit-based initial access or privilege escalation, though PPI is the primary vector.
Operationalization: SOC teams should immediately import the listed IPs and Domains into EDL (External Data Lists) on firewalls and EDR solutions. Hunt for DNS queries resolving to the listed domains within the last 30 days.
Detection Engineering
---
title: Potential GitHub Redirect C2 Activity
id: 4e8a3c12-5f9d-4a1e-8b2c-9f3d4e5a6b7c
description: Detects suspicious processes interacting with GitHub URLs indicative of C2 redirection or payload staging as seen in Operation STANDOFF.
author: Security Arsenal
date: 2026/07/22
references:
- https://www.vmray.com/execution-level-analysis-of-a-russian-speaking-multi-operator-intrusion-campaign-operation-standoff/
status: stable
logsource:
category: network_connection
product: windows
detection:
selection:
DestinationHostname|contains:
- 'github.com'
- 'raw.githubusercontent.com'
Initiated: 'true'
filter_legit_dev:
Image|contains:
- 'git.exe'
- 'visual studio'
- 'node.exe'
- 'python.exe'
ParentImage|contains:
- 'explorer.exe'
- 'cmd.exe'
condition: selection and not filter_legit_dev
falsepositives:
- Legitimate developer tools using git
level: high
tags:
- attack.command_and_control
- attack.t1102
---
title: SmokeLoader Persistence via Registry Run Keys
id: b7d6e5f1-2a3c-4b8d-9e0f-1a2b3c4d5e6f
description: Detects persistence mechanism often used by SmokeLoader and similar loaders via Registry Run keys.
author: Security Arsenal
date: 2026/07/22
status: stable
logsource:
category: registry_set
product: windows
detection:
selection:
TargetObject|contains: 'Software\Microsoft\Windows\CurrentVersion\Run'
Details|contains:
- '/C' # Command execution switch
- 'powershell'
- 'regsvr32'
condition: selection
falsepositives:
- Legitimate software installation
level: medium
tags:
- attack.persistence
- attack.t1547.001
---
title: Proxy Botnet Network Activity (Operation STANDOFF)
id: c9d8e7f6-5a4b-3c2d-1e0f-9a8b7c6d5e4f
description: Detects network connections to known TimeWeb infrastructure associated with Operation STANDOFF proxy botnet.
author: Security Arsenal
date: 2026/07/22
status: stable
logsource:
category: network_connection
product: windows
detection:
selection_ip:
DestinationIp:
- '188.225.72.157'
- '185.215.113.35'
- '212.192.241.62'
selection_domain:
DestinationHostname:
- 'listincode.com'
- 'wfsdragon.ru'
- 'topniemannpickshop.cc'
condition: 1 of selection*
falsepositives:
- Low
level: critical
tags:
- attack.command_and_control
- attack.t1071
kql
// Hunt for DNS resolutions to Operation STANDOFF domains
DeviceNetworkEvents
| where Timestamp > ago(7d)
| where RemoteUrl has_any ("listincode.com", "wfsdragon.ru", "topniemannpickshop.cc")
| project Timestamp, DeviceName, InitiatingProcessAccountName, RemoteUrl, RemoteIP
| extend AlertDetail = "Operation STANDOFF C2 Detection"
// Hunt for processes connecting to TimeWeb IP ranges
DeviceNetworkEvents
| where Timestamp > ago(7d)
| where RemoteIP in ("188.225.72.157", "185.215.113.35", "212.192.241.62")
| project Timestamp, DeviceName, InitiatingProcessFileName, InitiatingProcessCommandLine, RemoteIP, RemotePort
powershell
# Operation STANDOFF IOC Hunt Script
# Checks for network connections and registry persistence
Write-Host "Scanning for Operation STANDOFF Indicators..." -ForegroundColor Yellow
$IOCs = @(
"188.225.72.157",
"185.215.113.35",
"212.192.241.62"
)
$Domains = @(
"listincode.com",
"wfsdragon.ru",
"topniemannpickshop.cc"
)
# Check Active Network Connections
$activeConnections = Get-NetTCPConnection -State Established
foreach ($ip in $IOCs) {
$found = $activeConnections | Where-Object { $_.RemoteAddress -eq $ip }
if ($found) {
Write-Host "[ALERT] Active connection detected to malicious IP: $ip" -ForegroundColor Red
$found | Select-Object LocalAddress, LocalPort, RemoteAddress, RemotePort, OwningProcess
}
}
# Check DNS Cache (Requires Admin)
try {
$dnsCache = Get-DnsClientCache
foreach ($dom in $Domains) {
$foundDNS = $dnsCache | Where-Object { $_.Entry -like "*$dom*" }
if ($foundDNS) {
Write-Host "[ALERT] DNS Cache entry found for domain: $dom" -ForegroundColor Red
$foundDNS | Select-Object Entry, Data, TimeToLive
}
}
} catch {
Write-Host "Skipping DNS Cache check (Admin privileges required)." -ForegroundColor Gray
}
# Check Run Keys for Suspicious Persistence
$runKeys = @(
"HKLM:\Software\Microsoft\Windows\CurrentVersion\Run",
"HKCU:\Software\Microsoft\Windows\CurrentVersion\Run"
)
Write-Host "Checking Registry Run Keys for suspicious loader activity..." -ForegroundColor Cyan
foreach ($key in $runKeys) {
if (Test-Path $key) {
Get-Item $key | Select-Object -ExpandProperty Property | ForEach-Object {
$val = Get-ItemProperty -Path $key -Name $_
# Heuristic: Check for obscure paths or /C flag usage
if ($val.$_ -match "powershell" -or $val.$_ -match "cmd /c" -or $val.$_ -match "\.tmp") {
Write-Host "[SUSPICIOUS] Persistence found in $key : $_ = $($val.$_)" -ForegroundColor Yellow
}
}
}
}
Response Priorities
Immediate (0-24h):
- Block IOCs: Immediately block all listed IPs and Domains at the perimeter firewall and proxy servers.
- Isolate Hosts: Identify and isolate any endpoints with observed network connections to the TimeWeb IP range (
188.225.72.0/24). - Memory Forensics: Perform memory dumps on infected machines to extract in-memory configurations of the SmokeLoader and stealers, as C2 domains may rotate.
24-48h:
- Credential Reset: If Raccoon or RedLine execution is confirmed, force a password reset for all users and sessions originating from affected endpoints, specifically targeting browser-saved credentials.
- Proxy Inspection: Inspect network logs for unauthorized proxy traffic indicative of the Glupteba botnet enrollment.
1 Week:
- Architecture Hardening: Review outbound firewall policies to restrict access to GitHub repositories to only approved developer accounts and build agents.
- Vulnerability Management: Patch systems against CVE-2021-34527 if not already mitigated, as it may serve as a lateral movement vector.
Related Resources
Security Arsenal Incident Response Managed SOC & MDR Services AlertMonitor Threat Detection From The Dark Side Intel Hub
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