Analysis
- max time kernel
149s - max time network
150s - platform
windows10_x64 - resource
win10v20201028 - submitted
09/11/2020, 19:44
General
- Target exe,pdf.exe
- Size 335KB
- Sample201109-wbbcrldw7s
- SHA256 fc7132bfc8c4903b686f088ec38b8c4e36d0e5071aca8f7310070526afd83bee
Malware Config
Extracted
-
remcos
-
goddywin.freedynamicdns.net:5252
Signatures
- CoreEntity .NET Packer 1 IoCs
A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.
- Remcos
Remcos is a closed-source remote control and surveillance software.
- rezer0 1 IoCs
Detects ReZer0, a packer with multiple versions used in various campaigns.
- Uses the VBS compiler for execution 1 TTPs
- Suspicious use of SetThreadContext 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 use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 13 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\exe,pdf.exe"C:\Users\Admin\AppData\Local\Temp\exe,pdf.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\xQkyuOB" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5E33.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"{path}"2⤵
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/3408-4-0x0000000005070000-0x0000000005071000-memory.dmp
memory/3408-0-0x0000000073E00000-0x00000000744EE000-memory.dmp
memory/3408-5-0x0000000004FE0000-0x0000000004FE1000-memory.dmp
memory/3408-6-0x0000000005000000-0x0000000005003000-memory.dmp
memory/3408-7-0x00000000059D0000-0x00000000059F7000-memory.dmp
memory/3408-8-0x0000000005AA0000-0x0000000005AA1000-memory.dmp
memory/3408-3-0x00000000054D0000-0x00000000054D1000-memory.dmp
memory/3408-1-0x0000000000610000-0x0000000000611000-memory.dmp
memory/4072-11-0x0000000000400000-0x0000000000420000-memory.dmp
memory/4072-13-0x0000000000400000-0x0000000000420000-memory.dmp