eb4a7d75e1661dc1d9e158317a788eaf1c280da115c0c78662d0cba514b1e59b

Analysis

max time kernel
219s
max time network
92s
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-US.pak
Size

264KB
MD5

d88e338ff3888fce101a75ef0abd85d5
SHA1

4511a5856d10f69c1735e789c7b147fd3a93af5c
SHA256

7c803adac2d68a729365e79b3711cfef9cb51566324aa579a62a5347643e0e1f
SHA512

5af3780f6cd4cfc0657333d498a833f199c843cd9d23f25b80bbd05166c777d7effe7bad80c9b64d2278087dfe35ab88943ea27db7c9ea3cb2f0a44f44e39193
SSDEEP

6144:XlfQARNT63wWsweMz9etEo8faYGDWz/zV5xcV/wS:1fHRV6gD9MVoXWz554/wS

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\Local Settings	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	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
Set value (str)	\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\command	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

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
816	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
816	AcroRd32.exe
816	AcroRd32.exe
816	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2044 wrote to memory of 1820	2044	cmd.exe	29
PID 2044 wrote to memory of 1820	2044	cmd.exe	29
PID 2044 wrote to memory of 1820	2044	cmd.exe	29
PID 1820 wrote to memory of 816	1820	rundll32.exe	31
PID 1820 wrote to memory of 816	1820	rundll32.exe	31
PID 1820 wrote to memory of 816	1820	rundll32.exe	31
PID 1820 wrote to memory of 816	1820	rundll32.exe	31

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Setup\Locales\en-US.pak
1⤵
- Suspicious use of WriteProcessMemory
PID:2044
- 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-US.pak
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1820
- - 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-US.pak"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:816

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

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Downloads

memory/816-81-0x0000000000000000-mapping.dmp

Download
memory/816-82-0x0000000075531000-0x0000000075533000-memory.dmp

Filesize
8KB

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memory/1820-76-0x0000000000000000-mapping.dmp

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memory/2044-54-0x000007FEFBCE1000-0x000007FEFBCE3000-memory.dmp

Filesize
8KB

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