1ac0a777eb55b80ebc056353d8db520152c7ee71ca1319e841a2644d3cb4542a

Analysis

max time kernel
146s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
31/12/2023, 04:34

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General

Target

2856ad6bf07780f70e39f70f4b547241.dll
Size

36KB
MD5

2856ad6bf07780f70e39f70f4b547241
SHA1

a5b247cd6844076a2a403d26449cb8df66dceb33
SHA256

1ac0a777eb55b80ebc056353d8db520152c7ee71ca1319e841a2644d3cb4542a
SHA512

de62ae720be8c3618941c24da4095e92e8bdc1eeb092ea650e0034adb9c3c6d5bacabce0ce57958409aa0659ec60a58d0e2feb56dc334fda602f8bcda3bd0b7b
SSDEEP

768:mjgiGxy+iC146BDRK97J3+ZFWo2iU+DaLW:OMy+hQYFWuaLW

Score

8^/10

persistence

Malware Config

Signatures

Modifies AppInit DLL entries 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1547.001

Modify Registry
T1112

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\Control Panel\International\Geo\Nation	cmd.exe

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

System Information Discovery
T1082

Modifies registry class 2 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\regfile\shell\open\command\ = "regedit.exe /s \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000_Classes\Local Settings	cmd.exe

Runs .reg file with regedit 1 IoCs

pid	Process
4524	regedit.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4328	rundll32.exe
4328	rundll32.exe
4328	rundll32.exe
4328	rundll32.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4784 wrote to memory of 4328	4784	rundll32.exe	16
PID 4784 wrote to memory of 4328	4784	rundll32.exe	16
PID 4784 wrote to memory of 4328	4784	rundll32.exe	16
PID 4328 wrote to memory of 540	4328	rundll32.exe	58
PID 4328 wrote to memory of 540	4328	rundll32.exe	58
PID 4328 wrote to memory of 540	4328	rundll32.exe	58
PID 540 wrote to memory of 4524	540	cmd.exe	94
PID 540 wrote to memory of 4524	540	cmd.exe	94
PID 540 wrote to memory of 4524	540	cmd.exe	94

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\2856ad6bf07780f70e39f70f4b547241.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4784
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\2856ad6bf07780f70e39f70f4b547241.dll,#1
  2⤵
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4328
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\a.reg
    3⤵
    - Checks computer location settings
    - Modifies registry class
    - Suspicious use of WriteProcessMemory
    PID:540
  - - C:\Windows\SysWOW64\regedit.exe
      "regedit.exe" /s "C:\Users\Admin\AppData\Local\Temp\a.reg"
      4⤵
      Runs .reg file with regedit
      PID:4524

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\a.reg

Filesize
152B

MD5
b100f5324ef74ded0b998e64d07a2e19

SHA1
40b0d7f51bf2dd8451f1b723d21355c471a5fa46

SHA256
3db613d24a75ae220891698c055e1c580a42e58564f568a0510db87581cc2042

SHA512
c12391bb37c334074f7d7e1257b6364fd5cbce848e0a8fe15b8326f54fd9568fe3baec58618c4334027a774a06a08ec249cb71db925c1f85feee6a3d3a816c04

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