eb4a7d75e1661dc1d9e158317a788eaf1c280da115c0c78662d0cba514b1e59b

Analysis

max time kernel
219s
max time network
90s
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/ca.pak
Size

319KB
MD5

d8f581d4b51456a5a35441c92f4472d9
SHA1

2c4efb6763957ca04db317c06147d37ea819f869
SHA256

e33c02b937c56ea5e9e9859516aea5c54ac4af7cbe188a6f17e9d3e8f282516f
SHA512

f9433d12bef2dac4c8813136237c2760cfcae87099368c8bc2447f54b73880cd2f29676edb588b7e5f7d569877fdda290939d8997d2b4c66fc9b3b032284981c
SSDEEP

6144:OPe5SiatVLURCwR/PJsi8v5MGsDk+O/muls3Vx3ECSZ3n4eZQlrmwwVPMLLbcRBo:OP2SNVLURCwR/PJsi8v5MGsDk+O/muly

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\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_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
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	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1520	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1520	AcroRd32.exe
1520	AcroRd32.exe
1520	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1400 wrote to memory of 1192	1400	cmd.exe	29
PID 1400 wrote to memory of 1192	1400	cmd.exe	29
PID 1400 wrote to memory of 1192	1400	cmd.exe	29
PID 1192 wrote to memory of 1520	1192	rundll32.exe	31
PID 1192 wrote to memory of 1520	1192	rundll32.exe	31
PID 1192 wrote to memory of 1520	1192	rundll32.exe	31
PID 1192 wrote to memory of 1520	1192	rundll32.exe	31

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Setup\Locales\ca.pak
1⤵
- Suspicious use of WriteProcessMemory
PID:1400
- 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\ca.pak
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1192
- - 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\ca.pak"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:1520

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/1400-54-0x000007FEFB691000-0x000007FEFB693000-memory.dmp

Filesize
8KB

Download
memory/1520-82-0x0000000074ED1000-0x0000000074ED3000-memory.dmp

Filesize
8KB

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