eb4a7d75e1661dc1d9e158317a788eaf1c280da115c0c78662d0cba514b1e59b

Analysis

max time kernel
218s
max time network
91s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
04/02/2023, 21:09

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General

Target

Setup/Locales/en-GB.pak
Size

260KB
MD5

ff3c0eb20df6eadc21b631dab4c325a8
SHA1

0da2745f1a938d4a2bf136c2210992893ab89481
SHA256

8b3a34638c29a34ac1dab1e9bf497e24206842dfe43ca691698016da432420a7
SHA512

d77c3486568936bf47a2194d99afc55e5fbdeb8f7128fada56030cb8bc996e91906a03fad6126ac852ad23287f98d285f82d9319c49e59ce24625c61bc1bb059
SSDEEP

6144:8adsdJuwP8bWX8qmMz9etivEfaYpk86xbx5WbTek:8bdJjFslMPv986z57k

Score

3^/10

Malware Config

Signatures

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 10 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\pak_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\pak_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\pak_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\.pak	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\.pak\ = "pak_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\pak_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\pak_auto_file\	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2004	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2004	AcroRd32.exe
2004	AcroRd32.exe
2004	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 520 wrote to memory of 1784	520	cmd.exe	28
PID 520 wrote to memory of 1784	520	cmd.exe	28
PID 520 wrote to memory of 1784	520	cmd.exe	28
PID 1784 wrote to memory of 2004	1784	rundll32.exe	30
PID 1784 wrote to memory of 2004	1784	rundll32.exe	30
PID 1784 wrote to memory of 2004	1784	rundll32.exe	30
PID 1784 wrote to memory of 2004	1784	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Setup\Locales\en-GB.pak
1⤵
- Suspicious use of WriteProcessMemory
PID:520
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Setup\Locales\en-GB.pak
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1784
- - C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
    "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\Setup\Locales\en-GB.pak"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2004

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/520-54-0x000007FEFBCD1000-0x000007FEFBCD3000-memory.dmp

Filesize
8KB

Download
memory/2004-82-0x00000000761F1000-0x00000000761F3000-memory.dmp

Filesize
8KB

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