Analysis
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max time kernel
90s -
max time network
141s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
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submitted
01/02/2023, 14:30
General
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Target
Halkbank_Ekstre_20230129_075423_612150o.pdf..exe
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Size
504KB
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MD5
03fd5c37e0939a302d0bfd335d808cdd
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SHA1
f5ef1bec6f10a54e8fc85e4c2a2fa5e82f7e13e7
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SHA256
0e78a86f26a42335770e1a79657525389260b0213f243cb5f3cfa70948043303
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SHA512
55515e57ee6709bc3990b3095c73995cee51be5eb4b907c4c729e3e3006c392a154ede581cd1e586fec572ede554f1eefb1dcb46bb5dd9f716d9dcff8cfde173
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SSDEEP
12288:ooEevLH/zkcKGdPnbx6KdENaxLsSfBEgAiTlr8z9i7+pv1CWtO:odevLfOKPnbJdEN0V2gAClr8zw6R0h
Malware Config
Extracted
snakekeylogger
https://api.telegram.org/bot5801425382:AAG5b4PUEaqNDv5uP9ejZGeIHeuzzOD4IHY/sendMessage?chat_id=5812329204
Signatures
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Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
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Snake Keylogger payload 1 IoCs
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
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Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
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Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
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Suspicious use of SetThreadContext 1 IoCs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 21 IoCs
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Suspicious use of AdjustPrivilegeToken 3 IoCs
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Suspicious use of WriteProcessMemory 11 IoCs
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outlook_office_path 1 IoCs
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outlook_win_path 1 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20230129_075423_612150o.pdf..exe"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20230129_075423_612150o.pdf..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\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20230129_075423_612150o.pdf..exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20230129_075423_612150o.pdf..exe"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20230129_075423_612150o.pdf..exe"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
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Filesize
520KB
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Filesize
5.6MB
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Filesize
584KB
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Filesize
40KB
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Filesize
624KB
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Filesize
104KB
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Filesize
200KB
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Filesize
32KB
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Filesize
216KB
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Filesize
6.2MB
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Filesize
136KB
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Filesize
408KB
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Filesize
408KB
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Filesize
120KB
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Filesize
104KB
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Filesize
304KB
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Filesize
120KB
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Filesize
6.5MB
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Filesize
40KB
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Filesize
600KB
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Filesize
56KB
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Filesize
152KB
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Filesize
1.8MB