80a2f9e557e81028d751037e5d27bb90cd7b822bc0e6a6e4201287074d8fec08

Analysis

max time kernel
118s
max time network
140s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
19/02/2024, 20:04

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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-1-5-21-3427588347-1492276948-3422228430-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\pak_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\.pak	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\.pak\ = "pak_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\pak_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_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-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\pak_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\pak_auto_file\shell	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2128	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2128	AcroRd32.exe
2128	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2996 wrote to memory of 2656	2996	cmd.exe	29
PID 2996 wrote to memory of 2656	2996	cmd.exe	29
PID 2996 wrote to memory of 2656	2996	cmd.exe	29
PID 2656 wrote to memory of 2128	2656	rundll32.exe	30
PID 2656 wrote to memory of 2128	2656	rundll32.exe	30
PID 2656 wrote to memory of 2128	2656	rundll32.exe	30
PID 2656 wrote to memory of 2128	2656	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:2996
- 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: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_100_percent.pak"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2128

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
b285ca0194e715aca19a29bb0c93e5af

SHA1
41cb623fd199dd90eb9020e869de5764d21a4a31

SHA256
f4cd6d301872fd2e278ac072e4973347c25d83031d2f527df2e66194b7298af5

SHA512
ed51e096390dcfd3d2c2f1adbed2bc693d77d728502fe712536e9fe04fb1edd47f026c49f0dc5f36f20333ebf2b2154d6284c98a4304462a1f9f75b39eaca21e

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