eb21a698101b0781187b0df85ea6683043e36d5e4229dc692b0a2e410c8adc6e

Analysis

max time kernel
118s
max time network
128s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
21/04/2024, 13:16

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General

Target

chrome_200_percent.pak
Size

191KB
MD5

99b95d59d6817b46e9572e3354c97317
SHA1

6809db4ca8e10edd316261a3490d5fc657372c12
SHA256

55d873a9f3ac69bbf6eb6940443df8331ebd7aa57138681d615f3b89902447e7
SHA512

3071cfeb74d5058c4b7c01bfe3c6717d9bb426f3354c4d8a35bd3e16e15cde2f2c48238cb6382b0703b1cc257d87fcecfb84fbf4f597f58e64463ceede4366dd
SSDEEP

3072:ZDQYaE/N6Mrvy/3JPD9W2bg3yhPaafR54x5GMR+F44ffbdZnYw9p4AbIVGYoDd+y:ZDQYaSN6svydD42k3yxgx5GMRejnbdZR

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
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pak_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.pak\ = "pak_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pak_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.pak	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pak_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_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-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pak_auto_file	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2812	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2812	AcroRd32.exe
2812	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2980 wrote to memory of 2840	2980	cmd.exe	29
PID 2980 wrote to memory of 2840	2980	cmd.exe	29
PID 2980 wrote to memory of 2840	2980	cmd.exe	29
PID 2840 wrote to memory of 2812	2840	rundll32.exe	30
PID 2840 wrote to memory of 2812	2840	rundll32.exe	30
PID 2840 wrote to memory of 2812	2840	rundll32.exe	30
PID 2840 wrote to memory of 2812	2840	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:2980
- 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:2840
- - 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:2812

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
bd628334f26d9b41958c207201a54eb0

SHA1
e09693546fb40f8e23d300f541bd52846cd78414

SHA256
142771b379b5782b3b6e7e9cc7f6186ff70b13418f983e79d05589bc0a3f1845

SHA512
bf33bea23dc5600264a37fdd1dfccbd5f1834666ad6d20039d87b9abc06f5ef09f3e0c583ce5c762704a173c82d8e0dd8d4bc4117dcd227cfe213c70ecff48df

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