Analysis
- max time kernel
93s - max time network
157s - platform
windows10-2004_x64 - resource
win10v2004-en-20220112 - submitted
09/03/2022, 20:54
General
- Target ExternalRun.exe
- Size 274KB
- Sample220309-zqdebaeegr
- SHA256 3c8acfa90eed5ab18fd669bea9d494d9fb96f964d9040ee03ff9889dbaada294
Score
10/10
Malware Config
Extracted
Family
-
44caliber
C2
-
https://discord.com/api/webhooks/947512216133980311/ImHpeYlo_A0Yhi0saM66pMBO7iLHhGK_k5MBohq8Jg4tn4gMe7dTpw1qEItYNQR_c9kp
Signatures
- 44Caliber
An open source infostealer written in C#.
- DiscordWebhook 1 IoCs
Detect_Webhooks.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- 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
Processes
-
C:\Users\Admin\AppData\Local\Temp\ExternalRun.exe"C:\Users\Admin\AppData\Local\Temp\ExternalRun.exe"1⤵
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1544-130-0x000001AA738F0000-0x000001AA7393A000-memory.dmp
memory/1544-132-0x000001AA776E0000-0x000001AA776E2000-memory.dmp
memory/1544-131-0x00007FFB35160000-0x00007FFB35C21000-memory.dmp