40dca8cc9156a448082670599d1779339738028a616b3c1047178cf0a0baa6e5

Analysis

max time kernel
838s
max time network
840s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
23/02/2024, 12:36

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General

Target

doc/src/C-style.rst
Size

40KB
MD5

fad97e35e524392b4c69c0866de54ba6
SHA1

793df172f204c1a6d453a51b097221db7cb8c6ac
SHA256

64004fda7f196de682451d14969d407e24023be2ffda967b7ab4ab5d792c0ad5
SHA512

6922c231925ef605aba6a345f06e13d7843d9dcf655f2e07a9264daecefac7f4223b9ab208fdf0098520ab1cad2b6c593696d273b7a2546be034abf7f3e262c7
SSDEEP

768:ksMJzibRcV168jCqj9qDEBulrcaaIumWKq/EYkB3Y8sxVjcYVuOK:ksMJ71xawulIaaIuVKq1638VuJ

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-1-5-21-3452737119-3959686427-228443150-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\rst_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\rst_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\.rst	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\.rst\ = "rst_auto_file"	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\rst_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\rst_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\rst_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\rst_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2596	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2596	AcroRd32.exe
2596	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2384 wrote to memory of 2588	2384	cmd.exe	29
PID 2384 wrote to memory of 2588	2384	cmd.exe	29
PID 2384 wrote to memory of 2588	2384	cmd.exe	29
PID 2588 wrote to memory of 2596	2588	rundll32.exe	30
PID 2588 wrote to memory of 2596	2588	rundll32.exe	30
PID 2588 wrote to memory of 2596	2588	rundll32.exe	30
PID 2588 wrote to memory of 2596	2588	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\doc\src\C-style.rst
1⤵
- Suspicious use of WriteProcessMemory
PID:2384
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\doc\src\C-style.rst
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2588
- - 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\doc\src\C-style.rst"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2596

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
c91ec2eb187f482bff04fc506f6d6b2b

SHA1
34c296c80e056afc59ca8bfe312b88ae3e47a08b

SHA256
469dfae3002b5f2e53d31045a6d43ccd0a76bcf278323923eefcf48ebc6f2f0e

SHA512
f19a53f64b5129db34621df64341c71c7f0aa2fb154ff5bcd67484d154a69a781067ef2bc70087ca8bfbba3ccb1c083ed5d6d0ecf15ecc82662f815e0d241041

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