eac0f3d162b8aa13eb8095fb3c871f6a787bc287f7afb9eb49993a3396c2a31f

Analysis

max time kernel
120s
max time network
131s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
22/02/2024, 11:15

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General

Target

chrome_100_percent.pak
Size

126KB
MD5

8626e1d68e87f86c5b4dabdf66591913
SHA1

4cd7b0ac0d3f72587708064a7b0a3beca3f7b81c
SHA256

2caa1da9b6a6e87bdb673977fee5dd771591a1b6ed5d3c5f14b024130a5d1a59
SHA512

03bcd8562482009060f249d6a0dd7382fc94d669a2094dec08e8d119be51bef2c3b7b484bb5b7f805ae98e372dab9383a2c11a63ab0f5644146556b1bb9a4c99
SSDEEP

3072:AEKzwqCT4weSxQCS/qGTL2o418Gb0+VRLf0ld0GY3cQ39Vm2I:AEKzwt4hC4/rK18Gb0OV8ld0GecQ3f2

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-1-5-21-1658372521-4246568289-2509113762-1000_CLASSES\pak_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000_CLASSES\.pak\ = "pak_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000_CLASSES\pak_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000_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-1-5-21-1658372521-4246568289-2509113762-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000_CLASSES\.pak	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000_CLASSES\pak_auto_file\shell\Read	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000_CLASSES\pak_auto_file\	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2692	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2692	AcroRd32.exe
2692	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2192 wrote to memory of 2668	2192	cmd.exe	29
PID 2192 wrote to memory of 2668	2192	cmd.exe	29
PID 2192 wrote to memory of 2668	2192	cmd.exe	29
PID 2668 wrote to memory of 2692	2668	rundll32.exe	30
PID 2668 wrote to memory of 2692	2668	rundll32.exe	30
PID 2668 wrote to memory of 2692	2668	rundll32.exe	30
PID 2668 wrote to memory of 2692	2668	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\chrome_100_percent.pak
1⤵
- Suspicious use of WriteProcessMemory
PID:2192
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\chrome_100_percent.pak
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2668
- - 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_100_percent.pak"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2692

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
78ae340770c9b1f7c49463dc97f3cbbc

SHA1
a47a7bfc3057815898511ef7be8ba01c254e963f

SHA256
44cfcd20a1bf54e52f3a3db7bddec8c504fe127a5dde41e925ce1cf90d065879

SHA512
67a0d881f8b8e8160a835d11fc68ef927f7b915c25baa6fb4c53c801b5e52f7bfdad77d3c243ccf0045099df8ca816045d24dc202d240d8b0d9f6b8369c1c4ac

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