Analysis
- max time kernel
86s - max time network
144s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
- submitted
01/03/2023, 18:46
General
- Target Halkbank_Ekstre_20230103_082357_541079.exe
- Size 320KB
- Sample230301-xenpsshf42
- SHA256 71f8f4772040824d4004102760efa13ab202ed640cd86acdef15d46212cb1ea0
Malware Config
Signatures
- Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
- Snake Keylogger payload 5 IoCs
- Executes dropped EXE 2 IoCs
- 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
- Adds Run key to start application 2 TTPs 1 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.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 7 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20230103_082357_541079.exe"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20230103_082357_541079.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\ipipyfh.exe"C:\Users\Admin\AppData\Local\Temp\ipipyfh.exe" C:\Users\Admin\AppData\Local\Temp\amplmuslcwi.wf2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\ipipyfh.exe"C:\Users\Admin\AppData\Local\Temp\ipipyfh.exe"3⤵
- Executes dropped EXE
- 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
amplmuslcwi.wf
ipipyfh.exe
ipipyfh.exe
ipipyfh.exe
pkdnunthd.g
memory/4904-150-0x0000000000400000-0x0000000000437000-memory.dmp
memory/4904-154-0x00000000056B0000-0x00000000056C0000-memory.dmp
memory/4904-146-0x0000000000400000-0x0000000000437000-memory.dmp
memory/4904-148-0x0000000005C70000-0x0000000006214000-memory.dmp
memory/4904-149-0x00000000056C0000-0x000000000575C000-memory.dmp
memory/4904-143-0x0000000000400000-0x0000000000437000-memory.dmp
memory/4904-151-0x00000000056B0000-0x00000000056C0000-memory.dmp
memory/4904-152-0x00000000056B0000-0x00000000056C0000-memory.dmp
memory/4904-153-0x00000000056B0000-0x00000000056C0000-memory.dmp
memory/4904-145-0x0000000000400000-0x0000000000437000-memory.dmp
memory/4904-155-0x0000000006940000-0x0000000006B02000-memory.dmp
memory/4904-156-0x0000000006810000-0x00000000068A2000-memory.dmp
memory/4904-157-0x00000000067D0000-0x00000000067DA000-memory.dmp
memory/4904-158-0x00000000056B0000-0x00000000056C0000-memory.dmp
memory/4904-159-0x00000000056B0000-0x00000000056C0000-memory.dmp
memory/4904-160-0x00000000056B0000-0x00000000056C0000-memory.dmp
memory/4904-161-0x00000000056B0000-0x00000000056C0000-memory.dmp