b6f3940c1f63a7276c6690775f992c286eeb48f285a283423ad6aac78c1ccaec

Analysis

max time kernel
150s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
07/11/2022, 10:57

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General

Target

b6f3940c1f63a7276c6690775f992c286eeb48f285a283423ad6aac78c1ccaec.dll
Size

32KB
MD5

0ecf4e336a8820f35a40b80ddc57c91c
SHA1

e4b958503f2d343cd3fc20d75e9250225805cb9e
SHA256

b6f3940c1f63a7276c6690775f992c286eeb48f285a283423ad6aac78c1ccaec
SHA512

4a8bba9f5808204b9deb867a09ac4f490dae7079eee47fe3367f224de5588e2d0eb370c4ceff4df21d64b5adfdc57e404fbc40c0a9aac0dabeadff7c587e5d69
SSDEEP

384:WQYKQBVq3RuFUPLm4oV6twYXjOjss3r7LXeRoQfMnY1wwxV58:NoBVjUPLAjss3r7zMokMY1wOVW

Score

8^/10

persistence

Malware Config

Signatures

Modifies AppInit DLL entries 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1060

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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	cmd.exe

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 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-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings	cmd.exe

Runs .reg file with regedit 1 IoCs

pid	Process
968	regedit.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4920	rundll32.exe
4920	rundll32.exe
4920	rundll32.exe
4920	rundll32.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4932 wrote to memory of 4920	4932	rundll32.exe	80
PID 4932 wrote to memory of 4920	4932	rundll32.exe	80
PID 4932 wrote to memory of 4920	4932	rundll32.exe	80
PID 4920 wrote to memory of 860	4920	rundll32.exe	81
PID 4920 wrote to memory of 860	4920	rundll32.exe	81
PID 4920 wrote to memory of 860	4920	rundll32.exe	81
PID 860 wrote to memory of 968	860	cmd.exe	83
PID 860 wrote to memory of 968	860	cmd.exe	83
PID 860 wrote to memory of 968	860	cmd.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b6f3940c1f63a7276c6690775f992c286eeb48f285a283423ad6aac78c1ccaec.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4932
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\b6f3940c1f63a7276c6690775f992c286eeb48f285a283423ad6aac78c1ccaec.dll,#1
  2⤵
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4920
- - 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:860
  - - C:\Windows\SysWOW64\regedit.exe
      "regedit.exe" /s "C:\Users\Admin\AppData\Local\Temp\a.reg"
      4⤵
      Runs .reg file with regedit
      PID:968

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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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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