113aa0dbeb0b9887dc0e462565b967517e520fb6cb7256ab00298f5610c57148

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
23-02-2024 21:24

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General

Target

user.json
Size

23B
MD5

34d23ff2ad77f18da7beadb8aadcdfb0
SHA1

aec841e4d31adfb8123b2f0b6f9b327ff8f48fd8
SHA256

23f75a9dd253806b342c5b3b48f5dcc46990e91b47defcfcfc7502f49e32e139
SHA512

9d537f71c9f252f638f289973896da0fecc9f4d2220da35405665a753e55fe42228720cdd6c20246b7bcdbff73a09aed2bb75bfa171abef37a7fa89840c9932c

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-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\.json	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\json_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\json_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\json_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\json_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\json_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\json_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\.json\ = "json_auto_file"	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2728	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2728	AcroRd32.exe
2728	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2528 wrote to memory of 2700	2528	cmd.exe	29
PID 2528 wrote to memory of 2700	2528	cmd.exe	29
PID 2528 wrote to memory of 2700	2528	cmd.exe	29
PID 2700 wrote to memory of 2728	2700	rundll32.exe	30
PID 2700 wrote to memory of 2728	2700	rundll32.exe	30
PID 2700 wrote to memory of 2728	2700	rundll32.exe	30
PID 2700 wrote to memory of 2728	2700	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\user.json
1⤵
- Suspicious use of WriteProcessMemory
PID:2528
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\user.json
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2700
- - 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\user.json"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2728

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
30c98ac0c68ece5f7230edeb4ff759b4

SHA1
9fca052a7887386f47e7b86cbd227cb9e4915aad

SHA256
66f0b8390a88005eadff986d425770ebc95966ffc8e8994c97a90ef5809cde7b

SHA512
69ede666507f3129ae284003b8ee83f8d0834b2990b9646e2825f8b22eca81b6d68b2ca8873e02dfc6c93ec15fd6bfd78ae2396ce095411f45ac474247331932

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