66b13fad78119e5cfb1933fba5effb8f2dbeae76bbdf21868b5ab2167567be80

Analysis

max time kernel
118s
max time network
122s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
13-07-2024 17:49

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General

Target

AH.class
Size

1KB
MD5

d45f730e2ad0a7c3ed48cf3acc99a55b
SHA1

f181a74412dedc293f78552aee9897065cf08e95
SHA256

705f4d8826e42ac6ab0d75a7dbc56e8f1a1ce0af8547e906983a5185957ddf13
SHA512

aefba8635243ea1b6c857d92848961acf19d4e85bd8c79e45f8ce0a25762bd1dfbe86bebfa608111859ef0e69eae601ea1576ff5002db5eb7a74f511c70dbd75

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-1-5-21-940600906-3464502421-4240639183-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-940600906-3464502421-4240639183-1000_CLASSES\class_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-940600906-3464502421-4240639183-1000_CLASSES\.class\ = "class_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-940600906-3464502421-4240639183-1000_CLASSES\class_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-940600906-3464502421-4240639183-1000_CLASSES\class_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-940600906-3464502421-4240639183-1000_CLASSES\class_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-940600906-3464502421-4240639183-1000_CLASSES\.class	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-940600906-3464502421-4240639183-1000_CLASSES\class_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-940600906-3464502421-4240639183-1000_CLASSES\class_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
2752	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2752	AcroRd32.exe
2752	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2404 wrote to memory of 2944	2404	cmd.exe	32
PID 2404 wrote to memory of 2944	2404	cmd.exe	32
PID 2404 wrote to memory of 2944	2404	cmd.exe	32
PID 2944 wrote to memory of 2752	2944	rundll32.exe	33
PID 2944 wrote to memory of 2752	2944	rundll32.exe	33
PID 2944 wrote to memory of 2752	2944	rundll32.exe	33
PID 2944 wrote to memory of 2752	2944	rundll32.exe	33

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\AH.class
1⤵
- Suspicious use of WriteProcessMemory
PID:2404
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\AH.class
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2944
- - 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\AH.class"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2752

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
6dff88ac869cee978e8f8344c56e6d36

SHA1
b980b2f92325850611c55ac695e4b3733d7bbf52

SHA256
72bccf23347ef06aa58f48bcaa445a5cf157eb86c3835aaa0fbbf0c8d46e8f4f

SHA512
549c1d3b4d99ea044a5688a7d3901b14232c9d7528509973f2c30043dbfbb3a4f44b3abcbe0f214d59d483a7dbda241701e289b1a66f0939b3e465f748354657

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