05451b195a176fa75fb7a8de600068e1f08b2a0b5cef42eef8439ec28ed26a59

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27-04-2024 19:36

240427-ybnfasfc9t 7

27-04-2024 19:12

240427-xwpy7afb2v 7

27-04-2024 18:20

240427-wy4ppaed6x 7

Analysis

max time kernel
118s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
27-04-2024 19:36

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General

Target

chrome_200_percent.pak
Size

173KB
MD5

4610337e3332b7e65b73a6ea738b47df
SHA1

8d824c9cf0a84ab902e8069a4de9bf6c1a9aaf3b
SHA256

c91abf556e55c29d1ea9f560bb17cc3489cb67a5d0c7a22b58485f5f2fbcf25c
SHA512

039b50284d28dcd447e0a486a099fa99914d29b543093cccda77bbefdd61f7b7f05bb84b2708ae128c5f2d0c0ab19046d08796d1b5a1cff395a0689ab25ccb51
SSDEEP

3072:4DQYaEQN6AJPKNzIwafR54x5GMR+F44ffbdZnYw9p4AbIVGYoDd+HxNK/rIM0:4DQYaNN68QEVgx5GMRejnbdZnVE6YopY

Score

3^/10

Malware Config

Signatures

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies registry class 9 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\pak_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\.pak	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\.pak\ = "pak_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\pak_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\pak_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\pak_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_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
2808	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2808	AcroRd32.exe
2808	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2908 wrote to memory of 2656	2908	cmd.exe	29
PID 2908 wrote to memory of 2656	2908	cmd.exe	29
PID 2908 wrote to memory of 2656	2908	cmd.exe	29
PID 2656 wrote to memory of 2808	2656	rundll32.exe	30
PID 2656 wrote to memory of 2808	2656	rundll32.exe	30
PID 2656 wrote to memory of 2808	2656	rundll32.exe	30
PID 2656 wrote to memory of 2808	2656	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\chrome_200_percent.pak
1⤵
- Suspicious use of WriteProcessMemory
PID:2908
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\chrome_200_percent.pak
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2656
- - 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\chrome_200_percent.pak"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2808

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
0b5f4c84bf3b4ff7383c03a5c2353244

SHA1
f6633127eac4b832c2e563c44bc7ff4ef88d45b1

SHA256
39847b313e9092472ffe9ccd5faca6f560ad2e34db6de724af1613f4e78abbb7

SHA512
a736d8d3fa633d98e6bc8d1d6d5902f9919cfb3fe1c4a526b2f2b28d99900d306b695b442828f9479b1f09fe178400d9dd49d9713ce3665db90ee7867d651064

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