Analysis
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max time kernel
141s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20231023-en -
resource tags
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submitted
27-11-2023 11:08
General
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Target
Halkbank_Ekstre_20231127_093256_734631.pdf.exe
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Size
643KB
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MD5
f5c860c3291dfdd1e53d616d4e237afb
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SHA1
c2727013047c56dc71300bd0bc7f5bc84ef5e7cb
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SHA256
77224cecffb3caa25a9a6da433aef450f32e9ef67af70669b4ddd7a92c24c2ca
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SHA512
fd7130389abf2ef10c7c33888e60838bee488a3119ca1f31915c60c9cd98baa470e64499e9b853c1af5290f4a9a83a1783877073228c3eedb915b2e70f3134b7
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SSDEEP
12288:nxB2Q8fm/xBew2uQAylI3ifmihK3gGuXBH19Uwd7BR6wT:nxBHxIP/zzKZuLWwpB
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_20231127_093256_734631.pdf.exe"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20231127_093256_734631.pdf.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20231127_093256_734631.pdf.exe"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20231127_093256_734631.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
MD58cb8dbbb019a535fe00246c7afdb4270
SHA17d4fd9f302e4fc68a6fc3f95f0513c471ebfbb50
SHA2562c4f3f1d603c33e8410ce061380ec7a1772db21bdc4b01d3ca4067500a391f86
SHA512abc0cc34903b4d91f9f48ced799ee8019dcaa52f852e2b33cab42e92c3fd80a4ff2c71c12734836288c26165a77daa60badb6f0cc45ee8b6e1b431d3b1952a44
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Filesize
152KB
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Filesize
64KB
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Filesize
7.7MB
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Filesize
1.8MB
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Filesize
320KB
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Filesize
64KB
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Filesize
7.7MB
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Filesize
384KB
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Filesize
40KB
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Filesize
672KB
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Filesize
624KB
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Filesize
32KB
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Filesize
104KB
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Filesize
40KB
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Filesize
7.7MB
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Filesize
64KB
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Filesize
680KB
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Filesize
584KB
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Filesize
5.6MB
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Filesize
7.7MB