04b6cd2f3048a64bfea4e58c799ed5000235fc64e2fa43db7541723037e85339

Analysis

max time kernel
121s
max time network
125s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
16-06-2024 00:04

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General

Target

Stub.pyc
Size

874KB
MD5

6603a3a569f2bd07edecb6e0e94e62fe
SHA1

342396d9e35a2d2090aee83f9490e65da2e1999e
SHA256

771b876f9d185c3b8a9dbd28e3538e9e01e731f8b43fda5f27d8a90c4f96c480
SHA512

c7a8ed4c81d651d6d22392fdd7b4c6ce754da5b1405290e0f8310e53faa660b0b732eb9ec226b7432cbfb030168f76b24ebca0b8c67ba601e5a4497efce78610
SSDEEP

24576:K4+zR7jp3i4lTx1Djce1+Ci3hvNEcVfLOtoCis:y/lnbUs

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
Set value (str)	\REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\pyc_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\.pyc	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\.pyc\ = "pyc_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\pyc_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\pyc_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\pyc_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\pyc_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\pyc_auto_file	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2712	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2712	AcroRd32.exe
2712	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1224 wrote to memory of 2780	1224	cmd.exe	29
PID 1224 wrote to memory of 2780	1224	cmd.exe	29
PID 1224 wrote to memory of 2780	1224	cmd.exe	29
PID 2780 wrote to memory of 2712	2780	rundll32.exe	30
PID 2780 wrote to memory of 2712	2780	rundll32.exe	30
PID 2780 wrote to memory of 2712	2780	rundll32.exe	30
PID 2780 wrote to memory of 2712	2780	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Stub.pyc
1⤵
- Suspicious use of WriteProcessMemory
PID:1224
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Stub.pyc
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2780
- - 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\Stub.pyc"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2712

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
13f156990703bd996b322158b8585e1c

SHA1
542f9060411169ccdc8c2b395048768e317d206c

SHA256
6673d741a6f406f7ce744e3b6e718e7b08f1c17cf6b6d41e1f24ebd0f9325050

SHA512
ed1c985c43f52ffde70b0fb2d1715f09b4b1bd82b68830823d1cd701bc2d45cba92ac04fef7138d361ec2453b459c8587996bc1e84a074109fbf9dd590604846

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