d38241aaa6308ef9f79ca6ba87b8f903fd4aa2f44307a45076d0c244fb5c544c

Analysis

max time kernel
118s
max time network
126s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
14/06/2024, 17:01

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General

Target

chrome_200_percent.pak
Size

191KB
MD5

81b5b74fe16c7c81870f539d5c263397
SHA1

27526cc2b68a6d2b539bd75317a20c9c5e43c889
SHA256

cb4fd141a5c4d188a3ecb203e9d41a3afca648724160e212289adcac666fbff4
SHA512

b2670e2dfa495ccc7874c21d0413cfbebfd4a2f14fc0217e823ec6a16ac1181f8e06bfe7c2d32543167bc3a2e929c7f0af1a5f90182e95913ba2292fa7cadb80
SSDEEP

3072:A4DQYaE/N6gbrvy/+JPnKmWVlBafR54x5GMR+F44ffbdZnYw9p4AbIVGYoDd+Hxf:A4DQYaSN6gnvyWnKmWVlSgx5GMRejnbA

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-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_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-1-5-21-3627615824-4061627003-3019543961-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\pak_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\.pak	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\pak_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\pak_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\.pak\ = "pak_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\pak_auto_file\shell\Read	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2568	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2568	AcroRd32.exe
2568	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2372 wrote to memory of 1172	2372	cmd.exe	29
PID 2372 wrote to memory of 1172	2372	cmd.exe	29
PID 2372 wrote to memory of 1172	2372	cmd.exe	29
PID 1172 wrote to memory of 2568	1172	rundll32.exe	30
PID 1172 wrote to memory of 2568	1172	rundll32.exe	30
PID 1172 wrote to memory of 2568	1172	rundll32.exe	30
PID 1172 wrote to memory of 2568	1172	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:2372
- 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:1172
- - 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:2568

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

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Downloads

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

Filesize
3KB

MD5
d64f8845ab8ee4d1c568cd66247d495d

SHA1
0ebb256125f4c93f3d835602d731f01fc4e55d65

SHA256
c26a23a438048bf146c32d690b8b69a99fbc11cd4f4bbfc939d2bdfde172257f

SHA512
5a80ab5b18bc920cb3c5afd400ad70bd4c5f951f5bfb85fbe771f4404a2accf79ad6341a378710c0ba251451773ddecad6b8344314cbb44e839a06e7e7522c48

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