egregor | c497ed1d0a24ab346937b45b5ba1110eb0983251155e22fd13796be224d452ed | Triage

Analysis

max time kernel
2s
max time network
8s
platform
windows7_x64
resource
win7v20201028
submitted
04-11-2020 21:30

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General

Target

spr3.bat
Size

121B
MD5

0c126c56fc66b839998961859b7047c7
SHA1

f1079054aeb0d2c7b13f1bbf9d6bb2ec39d369a2
SHA256

0a92524512e6726c7a2839b9b8f0b904829f218054922ec64ea5c85918b13ddd
SHA512

c4acd93085ee0990a92a0af6ba37ddf6f7d73de4775d0fbfa98f1b0c1ee5fd6daa4729fe96d7283d20d9a8ab530a7caa3a4a936c5a7d3cba02109ee674e1182e

Score

10^/10

egregor ransomware

Malware Config

Signatures

Egregor Ransomware
Variant of the Sekhmet ransomware first seen in September 2020.
ransomware egregor

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 1892 wrote to memory of 1344	1892	cmd.exe	rundll32.exe
PID 1892 wrote to memory of 1344	1892	cmd.exe	rundll32.exe
PID 1892 wrote to memory of 1344	1892	cmd.exe	rundll32.exe
PID 1344 wrote to memory of 1236	1344	rundll32.exe	rundll32.exe
PID 1344 wrote to memory of 1236	1344	rundll32.exe	rundll32.exe
PID 1344 wrote to memory of 1236	1344	rundll32.exe	rundll32.exe
PID 1344 wrote to memory of 1236	1344	rundll32.exe	rundll32.exe
PID 1344 wrote to memory of 1236	1344	rundll32.exe	rundll32.exe
PID 1344 wrote to memory of 1236	1344	rundll32.exe	rundll32.exe
PID 1344 wrote to memory of 1236	1344	rundll32.exe	rundll32.exe

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\spr3.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:1892

C:\Windows\system32\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\b2.dll",DllRegisterServer --Password10Char --append="antani" --multiproc
2⤵
- Suspicious use of WriteProcessMemory
PID:1344

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\b2.dll",DllRegisterServer --Password10Char --append="antani" --multiproc
3⤵
PID:1236

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/1236-1-0x0000000000000000-mapping.dmp

Download
memory/1236-2-0x0000000000330000-0x000000000036F000-memory.dmp

Filesize
252KB

Download
memory/1344-0-0x0000000000000000-mapping.dmp

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