Analysis
- max time kernel
72s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
01/11/2022, 07:20
General
- Target Attached Overdue.exe
- Size 1.2MB
- Sample221101-h535vaabap
- SHA256 962b66d01dbbe1dd3cd85dcbe030c318d2f685fe5a965133279f5afb3b6adb94
Malware Config
Extracted
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snakekeylogger
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https://api.telegram.org/bot5484820495:AAGEjy8dT72vJZImmHLmeh3onMuG9LLRD5A/sendMessage?chat_id=5101327412
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.
- 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.
- Program crash 1 IoCs
- 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 6 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 17 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\Attached Overdue.exe"C:\Users\Admin\AppData\Local\Temp\Attached Overdue.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 behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\peGrroctkaHzjU" /XML "C:\Users\Admin\AppData\Local\Temp\tmp148.tmp"2⤵
- Creates scheduled task(s)
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"{path}"2⤵
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"{path}"2⤵
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4832 -s 14603⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4832 -ip 48321⤵
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
tmp148.tmp
memory/2384-135-0x00000000006E0000-0x0000000000810000-memory.dmp
memory/2384-136-0x00000000056F0000-0x0000000005C94000-memory.dmp
memory/2384-137-0x00000000051E0000-0x0000000005272000-memory.dmp
memory/2384-138-0x0000000005280000-0x000000000531C000-memory.dmp
memory/2384-139-0x0000000005190000-0x000000000519A000-memory.dmp
memory/2384-140-0x000000000DE20000-0x000000000DE86000-memory.dmp
memory/4832-146-0x0000000000400000-0x0000000000426000-memory.dmp