Analysis
- max time kernel
166s - max time network
169s - platform
windows10-2004_x64 - resource
win10v2004-20220310-en - submitted
15/03/2022, 12:08
General
- Target Halkbank_Ekstre_20220315_1583843832.pdf.exe
- Size 776KB
- Sample220315-pawkvachdk
- SHA256 de9f6c2d1c5290b7b9fb54e959dae7156cfd7005b1eb0299ea93e56e7883ca4b
Malware Config
Extracted
-
snakekeylogger
-
Protocol
smtp
-
Host
mail.celkonsan.com
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Port
587
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Username
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Password
QtYphndw+8
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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 3 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 16 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20220315_1583843832.pdf.exe"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20220315_1583843832.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\Roaming\bFGxywDtG.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\bFGxywDtG" /XML "C:\Users\Admin\AppData\Local\Temp\tmp63EE.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20220315_1583843832.pdf.exe"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20220315_1583843832.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 v6
Replay Monitor
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Downloads
memory/1412-144-0x0000000002B72000-0x0000000002B73000-memory.dmp
memory/1412-153-0x00000000063F0000-0x000000000640E000-memory.dmp
memory/1412-152-0x0000000005E60000-0x0000000005EC6000-memory.dmp
memory/1412-151-0x0000000005BC0000-0x0000000005C26000-memory.dmp
memory/1412-150-0x00000000054A0000-0x00000000054C2000-memory.dmp
memory/1412-145-0x0000000005520000-0x0000000005B48000-memory.dmp
memory/1412-142-0x0000000002B70000-0x0000000002B71000-memory.dmp
memory/1412-141-0x0000000074430000-0x0000000074BE0000-memory.dmp
memory/1412-143-0x0000000002AC0000-0x0000000002AF6000-memory.dmp
memory/3308-139-0x0000000004C70000-0x0000000004C7A000-memory.dmp
memory/3308-140-0x0000000000930000-0x00000000009CC000-memory.dmp
memory/3308-134-0x0000000074430000-0x0000000074BE0000-memory.dmp
memory/3308-138-0x0000000004C90000-0x0000000005234000-memory.dmp
memory/3308-137-0x0000000004BD0000-0x0000000004C62000-memory.dmp
memory/3308-136-0x0000000005240000-0x00000000057E4000-memory.dmp
memory/3308-135-0x0000000000160000-0x0000000000228000-memory.dmp
memory/4012-147-0x0000000000400000-0x0000000000426000-memory.dmp
memory/4012-148-0x0000000074430000-0x0000000074BE0000-memory.dmp
memory/4012-149-0x00000000057B0000-0x0000000005D54000-memory.dmp
memory/4012-154-0x0000000006EF0000-0x00000000070B2000-memory.dmp