31e9f88d2343967251e2ef28dfe51eb901ac91fdea16268f1b023e4d00456e51

Analysis

max time kernel
121s
max time network
124s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
10/05/2024, 09:02

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General

Target
data/flutter_assets/AssetManifest.json
Size 1KB
Sample240510-kzzataea4y
SHA256 c6177078657ed844c7833614ad5d9a2be67460582e436bab18a6cf81f8e892d2
MD5 352d6a37f9656412c52d8cea3037b679
SHA1 e69fda13642dfbaff6e39704e693b2a619794bfd
SHA512 6d27c0d00d0eb28128f7a7358cf1413e6255c8e246a2fab9cd3e1b2989ff92b3f8464a36468a3c73fb683d7a3f7776b5d48d266e15989ccb525db8367dcd953a
MD5 SHA1 SHA512

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-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\json_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\.json\ = "json_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\json_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\json_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\.json	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\json_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\json_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\json_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
2896	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2896	AcroRd32.exe
2896	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2252 wrote to memory of 1708	2252	cmd.exe	29
PID 2252 wrote to memory of 1708	2252	cmd.exe	29
PID 2252 wrote to memory of 1708	2252	cmd.exe	29
PID 1708 wrote to memory of 2896	1708	rundll32.exe	30
PID 1708 wrote to memory of 2896	1708	rundll32.exe	30
PID 1708 wrote to memory of 2896	1708	rundll32.exe	30
PID 1708 wrote to memory of 2896	1708	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\data\flutter_assets\AssetManifest.json
1⤵
- Suspicious use of WriteProcessMemory
PID:2252
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\data\flutter_assets\AssetManifest.json
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1708
- - 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\data\flutter_assets\AssetManifest.json"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2896

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

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Downloads

SharedDataEvents

Path C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents
Size 3KB
SHA256 9c82e07ba9c47bfa2de63c35a0c7ba1a3224044205f6a8101ae9af337949fe69
MD5 48ee1aaaff54ef4efcbaa882c7ec7a25
SHA1 26b57a8d45d702cd983c1380f3b9412952f50b20
SHA512 01d5d43c8ee9209abb064d82fc679dbf89e698bce5155fe70818000292dfa63a0e1802aba848b877fa79dcaeba324919507289316ed578f5e69f82ddef9c39b6
MD5 SHA1 SHA512

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