Analysis
- max time kernel
73s - max time network
129s - platform
windows10-2004_x64 - resource
win10v2004-20220901-en - resource tags
- submitted
29/11/2022, 02:00
General
- Target FACTURA.exe
- Size 741KB
- Sample221129-cez3lsbf8x
- SHA256 36969e849dcfa8492696980c5bba97a05bd47ce1ce43127410abc90de2208698
Malware Config
Extracted
-
snakekeylogger
-
https://api.telegram.org/bot5402813712:AAG__8vfwqo_1K9XHIpxzTR9T7UW4raysO4/sendMessage?chat_id=5034680713
Signatures
- Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
- Snake Keylogger payload 1 IoCs
- Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
- Looks for VMWare Tools registry key 2 TTPs 1 IoCs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- 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 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
- 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 5 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 17 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\FACTURA.exe"C:\Users\Admin\AppData\Local\Temp\FACTURA.exe"1⤵
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Checks computer location settings
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- 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\FACTURA.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\tImlWHjiu.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\tImlWHjiu" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9366.tmp"2⤵
- Creates scheduled task(s)
-
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C:\Users\Admin\AppData\Local\Temp\FACTURA.exe"C:\Users\Admin\AppData\Local\Temp\FACTURA.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
FACTURA.exe.log
powershell.exe.log
StartupProfileData-NonInteractive
tmp9366.tmp
memory/1092-132-0x0000000000490000-0x0000000000550000-memory.dmp
memory/1092-138-0x0000000007740000-0x00000000077A6000-memory.dmp
memory/1092-136-0x0000000007630000-0x00000000076CC000-memory.dmp
memory/1092-135-0x0000000004F70000-0x0000000004F7A000-memory.dmp
memory/1092-134-0x0000000004ED0000-0x0000000004F62000-memory.dmp
memory/1092-133-0x00000000053C0000-0x0000000005964000-memory.dmp
memory/3432-155-0x0000000007C60000-0x00000000082DA000-memory.dmp
memory/3432-153-0x0000000071530000-0x000000007157C000-memory.dmp
memory/3432-151-0x0000000006940000-0x0000000006972000-memory.dmp
memory/3432-149-0x0000000006310000-0x000000000632E000-memory.dmp
memory/3828-140-0x0000000005620000-0x0000000005C48000-memory.dmp
memory/3828-143-0x0000000005560000-0x0000000005582000-memory.dmp
memory/3828-139-0x0000000004FB0000-0x0000000004FE6000-memory.dmp
memory/3828-144-0x0000000005D50000-0x0000000005DB6000-memory.dmp
memory/3828-152-0x0000000071530000-0x000000007157C000-memory.dmp
memory/3828-154-0x0000000006B50000-0x0000000006B6E000-memory.dmp
memory/3828-161-0x0000000007B60000-0x0000000007B68000-memory.dmp
memory/3828-156-0x0000000007840000-0x000000000785A000-memory.dmp
memory/3828-157-0x00000000078B0000-0x00000000078BA000-memory.dmp
memory/3828-158-0x0000000007AC0000-0x0000000007B56000-memory.dmp
memory/3828-159-0x0000000007A70000-0x0000000007A7E000-memory.dmp
memory/3828-160-0x0000000007B80000-0x0000000007B9A000-memory.dmp
memory/4644-147-0x0000000000400000-0x0000000000426000-memory.dmp
memory/4644-150-0x0000000006470000-0x0000000006632000-memory.dmp