dd115c8ea18338be22a35070b04edde866e02918ab83545dc5321eb68ea201d8

Analysis

max time kernel
158s
max time network
164s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
30-12-2023 22:24

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General

Target

1e605a55bb32734178c19d9fe243a657.dll
Size

36KB
MD5

1e605a55bb32734178c19d9fe243a657
SHA1

84df9cf245b0ada30078d4ca7d4c8b0bc615710e
SHA256

dd115c8ea18338be22a35070b04edde866e02918ab83545dc5321eb68ea201d8
SHA512

28487004562aa3c7278631c0347f640aa056ae2bc436905a0ed4c17c735313b8d848a3544efb5512d15cf62ce8adba01bfef1851a666c446f3b7d8391a55090a
SSDEEP

768:GfZd8dJN5kXcyXrCD1tDMByGqnxGm3+2VWSaLW:GQdEcyXrC/GsnsIVWSaLW

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-1-5-21-2398549320-3657759451-817663969-1000\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-1-5-21-2398549320-3657759451-817663969-1000_Classes\Local Settings	cmd.exe

Runs .reg file with regedit 1 IoCs

pid	Process
1088	regedit.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3620	rundll32.exe
3620	rundll32.exe
3620	rundll32.exe
3620	rundll32.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2384 wrote to memory of 3620	2384	rundll32.exe	55
PID 2384 wrote to memory of 3620	2384	rundll32.exe	55
PID 2384 wrote to memory of 3620	2384	rundll32.exe	55
PID 3620 wrote to memory of 3196	3620	rundll32.exe	89
PID 3620 wrote to memory of 3196	3620	rundll32.exe	89
PID 3620 wrote to memory of 3196	3620	rundll32.exe	89
PID 3196 wrote to memory of 1088	3196	cmd.exe	91
PID 3196 wrote to memory of 1088	3196	cmd.exe	91
PID 3196 wrote to memory of 1088	3196	cmd.exe	91

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\1e605a55bb32734178c19d9fe243a657.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2384
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\1e605a55bb32734178c19d9fe243a657.dll,#1
  2⤵
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3620
- - 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:3196
  - - C:\Windows\SysWOW64\regedit.exe
      "regedit.exe" /s "C:\Users\Admin\AppData\Local\Temp\a.reg"
      4⤵
      Runs .reg file with regedit
      PID:1088

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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