Analysis
- max time kernel
149s - max time network
141s - platform
windows10-2004_x64 - resource
win10v2004-20260130-en - resource tags
- submitted
03/05/2026, 01:02
General
- Target 2026-05-03_dafa76881abe09b012e98149383bb463_akira_cobalt-strike_rusty-stealer_satacom.exe
- Size 490KB
- Sample260503-bdrjeady8p
- SHA256 3150dc1caed8c491e9aed7a4379ada72a1c0b64155645ea91bc3d1f57edac99d
Score
10/10
Malware Config
Signatures
- Family: UnixStealer
UnixStealer is a Windows stealer written in C#.
- Detects UnixStealer payload 2 IoCs
- Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers 2 IoCs
- Detects executables Discord URL observed in first stage droppers 1 IoCs
- Detects executables containing commands for clearing Windows Event Logs 2 IoCs
- Detects executables referencing Discord tokens regular expressions 2 IoCs
- Detects executables referencing credit card regular expressions 2 IoCs
- Detects executables referencing many VPN software clients. Observed in infosteslers 2 IoCs
- Detects executables referencing many confidential data stores found in browsers, mail clients, crypt 2 IoCs
- Detects executables referencing virtualization MAC addresses 2 IoCs
- Detects executables using Telegram Chat Bot 2 IoCs
- Executes dropped EXE 1 IoCs
- Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- Contacts third-party web service commonly abused for C2 1 TTPs 2 IoCs
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
- Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Browser Information Discovery 1 TTPs
Enumerate browser information.
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-05-03_dafa76881abe09b012e98149383bb463_akira_cobalt-strike_rusty-stealer_satacom.exe"C:\Users\Admin\AppData\Local\Temp\2026-05-03_dafa76881abe09b012e98149383bb463_akira_cobalt-strike_rusty-stealer_satacom.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\nruiyrgx.exe"C:\Users\Admin\AppData\Local\Temp\nruiyrgx.exe"2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
nruiyrgx.exe
tmp3A62.tmp.dat
tmp3A65.tmp.dat
memory/4480-4-0x00000188F55E0000-0x00000188F5630000-memory.dmp
memory/4480-43-0x00000188F7B40000-0x00000188F7B50000-memory.dmp
memory/4480-140-0x00000188F5B80000-0x00000188F5BB0000-memory.dmp
memory/4480-141-0x00000188F72E0000-0x00000188F72EC000-memory.dmp