Analysis
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max time kernel
142s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20231127-en -
resource tags
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submitted
28-11-2023 08:11
General
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Target
Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
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Size
532KB
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MD5
3c55772d1d2d8e233a8134fdafaa172d
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SHA1
d64bef49731e6048fbd78451e4ec2ee7d425143a
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SHA256
14d85ed5d393839b550f5a8c2fd37a1a3ddb70e802b77f7b433f3c2ff34c635d
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SHA512
ab946c3994d74d92765d1ca7fc02c9b4a808801b52435482e2b815e6adf6c37f787659b12cbbf43d2e5d8121caa2b1bcc63cd0999f3f7f968a15e748fdff028c
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SSDEEP
12288:hiZCQmbCpQN8oOVTBqmC/tttm2hH2UJS77GMM6m1jSsGI:M4N8R5Bu/tfLhH2UAHtDsG
Malware Config
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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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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Suspicious behavior: EnumeratesProcesses 2 IoCs
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Suspicious use of AdjustPrivilegeToken 1 IoCs
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Suspicious use of WriteProcessMemory 8 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_20231128_435212_2535363.pdf.exe"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20231128_435212_2535363.pdf.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20231128_435212_2535363.pdf.exe"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20231128_435212_2535363.pdf.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1KB
MD58ec831f3e3a3f77e4a7b9cd32b48384c
SHA1d83f09fd87c5bd86e045873c231c14836e76a05c
SHA2567667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982
SHA51226bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3
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Filesize
64KB
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Filesize
584KB
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Filesize
624KB
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Filesize
384KB
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Filesize
40KB
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Filesize
104KB
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Filesize
32KB
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Filesize
40KB
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Filesize
7.7MB
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Filesize
5.6MB
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Filesize
7.7MB
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Filesize
552KB
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Filesize
7.7MB
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Filesize
7.7MB
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Filesize
64KB
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Filesize
320KB
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Filesize
1.8MB
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Filesize
152KB