Analysis
- max time kernel
113s - max time network
143s - platform
windows10-2004_x64 - resource
win10v2004-20220414-en - submitted
17/05/2022, 10:42
General
- Target TT copy.exe
- Size 371KB
- Sample220517-mrnv8aafd8
- SHA256 1f7cd0cb15550fd5bf1a49353ae74845965cb3d313f5b8e66f4bd2835661917f
Malware Config
Extracted
-
snakekeylogger
-
Protocol
smtp
-
Host
mail.sikdertradegroup.com
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Port
587
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Username
-
Password
Bangladesh321
-
Email to
Signatures
- Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
- Snake Keylogger Payload 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\TT copy.exe"C:\Users\Admin\AppData\Local\Temp\TT copy.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QqYipeFgD" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDE5E.tmp"2⤵
- Creates scheduled task(s)
-
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C:\Users\Admin\AppData\Local\Temp\TT copy.exe"{path}"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
TT copy.exe.log
tmpDE5E.tmp
memory/1444-139-0x0000000000400000-0x0000000000426000-memory.dmp
memory/1444-141-0x0000000006790000-0x0000000006952000-memory.dmp
memory/4684-130-0x00000000007F0000-0x0000000000854000-memory.dmp
memory/4684-131-0x00000000051E0000-0x000000000527C000-memory.dmp
memory/4684-132-0x0000000005830000-0x0000000005DD4000-memory.dmp
memory/4684-133-0x0000000005320000-0x00000000053B2000-memory.dmp
memory/4684-135-0x00000000054C0000-0x0000000005516000-memory.dmp
memory/4684-134-0x00000000052A0000-0x00000000052AA000-memory.dmp