a27835ad71833743504aca52292758115a07e2eb66e196a77760be81a624c2b2

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
13/03/2024, 11:00

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General

Target

c5b4646d7fd71be69ee219baf37ebeec.dll
Size

64KB
MD5

c5b4646d7fd71be69ee219baf37ebeec
SHA1

bfb7620e677917173fabcfd6030d4cf9a2a7814f
SHA256

a27835ad71833743504aca52292758115a07e2eb66e196a77760be81a624c2b2
SHA512

7fe26d57c47bb7957c62360cae03ac1d7a8afc987836c15e1b42309ea6f95269e30a7c73b26e7e46d864fbacb1bcb1fb397f7e9034eb4aad504c17701f84f742
SSDEEP

768:rafQmHy4c93vGSxt7j7g1E9wWEWJJd3G5U3s4xQMm37L3EVgfRO+ozTly:zmS9T5ftwWTGm3O33/IJ1

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-1-5-21-275798769-4264537674-1142822080-1000\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-1-5-21-275798769-4264537674-1142822080-1000_Classes\Local Settings	cmd.exe

Runs .reg file with regedit 1 IoCs

pid	Process
3192	regedit.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4140	rundll32.exe
4140	rundll32.exe
4140	rundll32.exe
4140	rundll32.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2396 wrote to memory of 4140	2396	rundll32.exe	89
PID 2396 wrote to memory of 4140	2396	rundll32.exe	89
PID 2396 wrote to memory of 4140	2396	rundll32.exe	89
PID 4140 wrote to memory of 2128	4140	rundll32.exe	90
PID 4140 wrote to memory of 2128	4140	rundll32.exe	90
PID 4140 wrote to memory of 2128	4140	rundll32.exe	90
PID 2128 wrote to memory of 3192	2128	cmd.exe	92
PID 2128 wrote to memory of 3192	2128	cmd.exe	92
PID 2128 wrote to memory of 3192	2128	cmd.exe	92

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\c5b4646d7fd71be69ee219baf37ebeec.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2396
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\c5b4646d7fd71be69ee219baf37ebeec.dll,#1
  2⤵
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4140
- - 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:2128
  - - C:\Windows\SysWOW64\regedit.exe
      "regedit.exe" /s "C:\Users\Admin\AppData\Local\Temp\a.reg"
      4⤵
      Runs .reg file with regedit
      PID:3192

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

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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/4140-0-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

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