a88838fdb48de667d9a009971e78dbd8fb51e16b19f4d6307539c6e17c7a9a0a

Analysis

max time kernel
164s
max time network
172s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
29/11/2022, 03:42

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General

Target

a88838fdb48de667d9a009971e78dbd8fb51e16b19f4d6307539c6e17c7a9a0a.dll
Size

64KB
MD5

90eb60dc3af98431d16f29e1e96c2abd
SHA1

c111c9cbfb4addc1b395f27bc22fe365c5799dbb
SHA256

a88838fdb48de667d9a009971e78dbd8fb51e16b19f4d6307539c6e17c7a9a0a
SHA512

a379be5831f3723c8552de732fdf7efa83d9c0b3688a97dcc39389fd2fd6567bffad75647f1ff01649033fd3fce3b2c9c88e3cdfdab13c1ccc714077d28ee0ce
SSDEEP

768:USBZNANYqXIZm11g6DN18EBfW1htX046vphl4+VY4J1G3pFI:XPGDzfW7tSN4+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-1-5-21-2629973501-4017243118-3254762364-1000\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
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings	cmd.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\regfile\shell\open\command\ = "regedit.exe /s \"%1\""	rundll32.exe

Runs .reg file with regedit 1 IoCs

pid	Process
3452	regedit.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4332	rundll32.exe
4332	rundll32.exe
4332	rundll32.exe
4332	rundll32.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1216 wrote to memory of 4332	1216	rundll32.exe	77
PID 1216 wrote to memory of 4332	1216	rundll32.exe	77
PID 1216 wrote to memory of 4332	1216	rundll32.exe	77
PID 4332 wrote to memory of 3672	4332	rundll32.exe	79
PID 4332 wrote to memory of 3672	4332	rundll32.exe	79
PID 4332 wrote to memory of 3672	4332	rundll32.exe	79
PID 3672 wrote to memory of 3452	3672	cmd.exe	82
PID 3672 wrote to memory of 3452	3672	cmd.exe	82
PID 3672 wrote to memory of 3452	3672	cmd.exe	82

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a88838fdb48de667d9a009971e78dbd8fb51e16b19f4d6307539c6e17c7a9a0a.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1216
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\a88838fdb48de667d9a009971e78dbd8fb51e16b19f4d6307539c6e17c7a9a0a.dll,#1
  2⤵
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4332
- - 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:3672
  - - C:\Windows\SysWOW64\regedit.exe
      "regedit.exe" /s "C:\Users\Admin\AppData\Local\Temp\a.reg"
      4⤵
      Runs .reg file with regedit
      PID:3452

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

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