2b6392d854b3747eb5b728eaf1f37dab3de9ef2ec9f6140c9e3c969ccf4fcbd3

Analysis

max time kernel
139s
max time network
167s
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 14:22

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General

Target

39ac6f78e012433fa9bf0e553cfa67e7.dll
Size

64KB
MD5

39ac6f78e012433fa9bf0e553cfa67e7
SHA1

a91489d78d3e342c55e2c6ecbdc2649334612dcb
SHA256

2b6392d854b3747eb5b728eaf1f37dab3de9ef2ec9f6140c9e3c969ccf4fcbd3
SHA512

ce1852f8430dd8f17ae873a9f7521265a506b658390b4fc2cfcb1237d11824870e2880a98be5c9dc6a173308b60fb1ec9c127bc7d0e12511dcc9547c2c313c23
SSDEEP

768:zafQmHy4c93vGSxt7j7g1E9wWEWJJd3G5U3s4xQMm37L3EVgfRO+ozTlt:rmS9T5ftwWTGm3O33/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-1-5-21-996941297-2279405024-2328152752-1000\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-1-5-21-996941297-2279405024-2328152752-1000_Classes\Local Settings	cmd.exe

Runs .reg file with regedit 1 IoCs

pid	Process
1248	regedit.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3112	rundll32.exe
3112	rundll32.exe
3112	rundll32.exe
3112	rundll32.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4488 wrote to memory of 3112	4488	rundll32.exe	88
PID 4488 wrote to memory of 3112	4488	rundll32.exe	88
PID 4488 wrote to memory of 3112	4488	rundll32.exe	88
PID 3112 wrote to memory of 3476	3112	rundll32.exe	89
PID 3112 wrote to memory of 3476	3112	rundll32.exe	89
PID 3112 wrote to memory of 3476	3112	rundll32.exe	89
PID 3476 wrote to memory of 1248	3476	cmd.exe	94
PID 3476 wrote to memory of 1248	3476	cmd.exe	94
PID 3476 wrote to memory of 1248	3476	cmd.exe	94

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\39ac6f78e012433fa9bf0e553cfa67e7.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4488
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\39ac6f78e012433fa9bf0e553cfa67e7.dll,#1
  2⤵
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3112
- - 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:3476
  - - C:\Windows\SysWOW64\regedit.exe
      "regedit.exe" /s "C:\Users\Admin\AppData\Local\Temp\a.reg"
      4⤵
      Runs .reg file with regedit
      PID:1248

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/3112-0-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

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