8b47e773a782361209f8adacc8d6aeefb595e1c13ae6813df7de01c20a15c91e

Analysis

max time kernel
150s
max time network
31s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
08/02/2023, 15:39

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General

Target

MEMZ-master/WindowsTrojan/Source/exe2bat.py
Size

2KB
MD5

d36aa007ebc8489f62d8de501cde8f2e
SHA1

d64df27d02d9d96f7a47452b38aa3b92d50997a5
SHA256

9403d047e2c8b47ff80a821c10d7e2ec4ee36d9267b8ed693dad9c5b8c5fc993
SHA512

31da546ca83781cbd6a9f58114116007a8557167a8a4ca402b7e79958d98481698ae0bfd229f655c52ab8cc106cb344fc0c6005b8508d87bc62f6b61f1438d05

Score

3^/10

Malware Config

Signatures

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

System Information Discovery
T1082

Modifies registry class 10 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\py_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\.py\ = "py_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\py_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\py_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\py_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\py_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\.py	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\py_auto_file\shell	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1728	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1728	AcroRd32.exe
1728	AcroRd32.exe
1728	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1776 wrote to memory of 1112	1776	cmd.exe	29
PID 1776 wrote to memory of 1112	1776	cmd.exe	29
PID 1776 wrote to memory of 1112	1776	cmd.exe	29
PID 1112 wrote to memory of 1728	1112	rundll32.exe	30
PID 1112 wrote to memory of 1728	1112	rundll32.exe	30
PID 1112 wrote to memory of 1728	1112	rundll32.exe	30
PID 1112 wrote to memory of 1728	1112	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\MEMZ-master\WindowsTrojan\Source\exe2bat.py
1⤵
- Suspicious use of WriteProcessMemory
PID:1776
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\MEMZ-master\WindowsTrojan\Source\exe2bat.py
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1112
- - C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
    "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\MEMZ-master\WindowsTrojan\Source\exe2bat.py"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:1728

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1728-82-0x00000000753F1000-0x00000000753F3000-memory.dmp

Filesize
8KB

Download
memory/1776-54-0x000007FEFB881000-0x000007FEFB883000-memory.dmp

Filesize
8KB

Download