76a1ff6c0d7827ecd0857e5a9b5298337f232662767abf0f011154c85b6da8ef

Analysis

max time kernel
120s
max time network
125s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
09/01/2024, 00:33

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General

Target

shaders/composite4.vsh
Size

1KB
MD5

6632053aceeecd7d0366a4d02bd8c5ce
SHA1

7b732bc8ea9bef27f020341c50cd91bc3b62b835
SHA256

90ae7443c8e485d0e9c042ab82cfe8ae53f3745e3b703c500411c5f5758b5efe
SHA512

e0fd6a31ce7ab26bf05874e5019b6b69c954ffba29799c87b7b0c56557cece9c7b94e1e1370540400db9b999294609a8013870dd8e75df30b156f7b32cd14939

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-1-5-21-1268429524-3929314613-1992311491-1000_CLASSES\.vsh	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000_CLASSES\.vsh\ = "vsh_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000_CLASSES\vsh_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000_CLASSES\vsh_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000_CLASSES\vsh_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000_CLASSES\vsh_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000_CLASSES\vsh_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000_CLASSES\vsh_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
2876	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2876	AcroRd32.exe
2876	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 840 wrote to memory of 2848	840	cmd.exe	29
PID 840 wrote to memory of 2848	840	cmd.exe	29
PID 840 wrote to memory of 2848	840	cmd.exe	29
PID 2848 wrote to memory of 2876	2848	rundll32.exe	30
PID 2848 wrote to memory of 2876	2848	rundll32.exe	30
PID 2848 wrote to memory of 2876	2848	rundll32.exe	30
PID 2848 wrote to memory of 2876	2848	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\shaders\composite4.vsh
1⤵
- Suspicious use of WriteProcessMemory
PID:840
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\shaders\composite4.vsh
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2848
- - 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\shaders\composite4.vsh"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2876

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
cc488106857d5095383eb2e80bfebaa9

SHA1
01fee0b4042be196f40570b5f0f5b3dadf017ef5

SHA256
5b041ded542e7cb36c653c62dc119af8d4eb2a23f4331d569c1d516d3192fd13

SHA512
b74427f624f9253670106ac3097853c89fa89b4aaab857fcef8f653e14ab26d0ff0796e504ee28915036f8b81f89d5a8bca7827da057f3ddeb4d4bd06a16233f

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