a5caa733cbce9fbe6ed2718afac11c6db9e8d649ad2fe114dc8f5b6cfaeb749e

Analysis

max time kernel
146s
max time network
188s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
01/12/2022, 20:05

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General

Target

a5caa733cbce9fbe6ed2718afac11c6db9e8d649ad2fe114dc8f5b6cfaeb749e.dll
Size

64KB
MD5

4b1a0347eb43f2926a83bb368f6b1e32
SHA1

2e41d0800b58e8123520f874373c7c0ef504b61e
SHA256

a5caa733cbce9fbe6ed2718afac11c6db9e8d649ad2fe114dc8f5b6cfaeb749e
SHA512

0f7c5b181658b9bac521bc2843629bf9c2a248c936b92473ee96da8f227ac7bbea584233ade8e6dcdfef885f27ee9aa22ddb79a7e066026083257285c07ff867
SSDEEP

768:6SBZNANYqXIZm11g6DN18EBfW1htX046vphl4+VY4J1G3pFI:BPGDzfW7tSN4+VY44FI

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-1-5-21-2386679933-1492765628-3466841596-1000\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-1-5-21-2386679933-1492765628-3466841596-1000_Classes\Local Settings	cmd.exe

Runs .reg file with regedit 1 IoCs

pid	Process
3164	regedit.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4640 wrote to memory of 224	4640	rundll32.exe	83
PID 4640 wrote to memory of 224	4640	rundll32.exe	83
PID 4640 wrote to memory of 224	4640	rundll32.exe	83
PID 224 wrote to memory of 2180	224	rundll32.exe	86
PID 224 wrote to memory of 2180	224	rundll32.exe	86
PID 224 wrote to memory of 2180	224	rundll32.exe	86
PID 2180 wrote to memory of 3164	2180	cmd.exe	88
PID 2180 wrote to memory of 3164	2180	cmd.exe	88
PID 2180 wrote to memory of 3164	2180	cmd.exe	88

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a5caa733cbce9fbe6ed2718afac11c6db9e8d649ad2fe114dc8f5b6cfaeb749e.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4640
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\a5caa733cbce9fbe6ed2718afac11c6db9e8d649ad2fe114dc8f5b6cfaeb749e.dll,#1
  2⤵
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:224
- - 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:2180
  - - C:\Windows\SysWOW64\regedit.exe
      "regedit.exe" /s "C:\Users\Admin\AppData\Local\Temp\a.reg"
      4⤵
      Runs .reg file with regedit
      PID:3164

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

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

Download Submit
memory/224-134-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

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