e3798dc43a1b3c5e7d6855a2a467e273ef69ce557f572ab68b1c41a709324165

Analysis

max time kernel
24s
platform
windows11-21h2_x64
resource
win11-20240426-en
resource tags

arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
submitted
21/05/2024, 18:34

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General

Target

merek.py
Size

21KB
MD5

5037cac6fb4a4bb0260d61b317611d57
SHA1

aba4ebe6397e2576c3ce3569b89e3d81352e996d
SHA256

e3798dc43a1b3c5e7d6855a2a467e273ef69ce557f572ab68b1c41a709324165
SHA512

3494506f2e49b51b3515306381ef006e9dfdc9910000ff074e361dbf0c5d4e4ea7486a1ff492f35223bb6470ddbfe6c7f311a56da3e140141e9262054042bc8d
SSDEEP

384:tFJSQ5xC/MKSkF6gWrx9mrdPjznal0qWMbYuKWvJeh7O5zytvLA7RvjO+K:tWYxC/MK3F67rxgxQlWMbYrr7O5sDA78

Score

3^/10

Malware Config

Signatures

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	AcroRd32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	AcroRd32.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1230210488-3096403634-4129516247-1000_Classes\Local Settings	cmd.exe
Key created	\REGISTRY\USER\S-1-5-21-1230210488-3096403634-4129516247-1000_Classes\Local Settings	OpenWith.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1908	OpenWith.exe

Suspicious use of SetWindowsHookEx 17 IoCs

pid	Process
1908	OpenWith.exe
1908	OpenWith.exe
1908	OpenWith.exe
1908	OpenWith.exe
1908	OpenWith.exe
1908	OpenWith.exe
1908	OpenWith.exe
1908	OpenWith.exe
1908	OpenWith.exe
1908	OpenWith.exe
1908	OpenWith.exe
1908	OpenWith.exe
1908	OpenWith.exe
2140	AcroRd32.exe
2140	AcroRd32.exe
2140	AcroRd32.exe
2140	AcroRd32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1908 wrote to memory of 2140	1908	OpenWith.exe	84
PID 1908 wrote to memory of 2140	1908	OpenWith.exe	84
PID 1908 wrote to memory of 2140	1908	OpenWith.exe	84

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\merek.py
1⤵
- Modifies registry class
PID:1548

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1908
- C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32.exe
  "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\merek.py"
  2⤵
  - Checks processor information in registry
  - Suspicious use of SetWindowsHookEx
  PID:2140

C:\Windows\system32\cmd.exe
"C:\Windows\system32\cmd.exe"
1⤵
PID:3824

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Windows 7 deprecation

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