b47308aaff0247545dc8ea6fa5ff1dbf0548f805e51ad2aea09cb984d18a2a97

Analysis

max time kernel
357s
max time network
358s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
08-09-2024 17:34

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General

Target

Stub.pyc
Size

874KB
MD5

a21bd7a308d6773bf26023f71fe1f2d4
SHA1

f49e9bb3df82efdb05c2f771b552bbb9a9388459
SHA256

6081ace0c97f5d4ef9283ef71f155015300aa24339c40c3959890eac0732d50f
SHA512

7a299139f8d321dfd45820ba1fd2f9f17792f2a732188225f53ed616be3f339a24aff0d35a994f259172d0db671cd16ec0caac97f73c0a23fe0966a7db03ef8c
SSDEEP

12288:zdBnI/cPa8SyemkxwOz0YuSu7O+z/5by5YRWjYHL5QrofzY7z28zcL8at:hBIEnSeNOz7u7OERbyz8HLXkm8zcL8c

Score

3^/10

discovery

Malware Config

Signatures

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AcroRd32.exe

Modifies registry class 9 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\pyc_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\.pyc	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\.pyc\ = "pyc_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\pyc_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_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-1-5-21-2703099537-420551529-3771253338-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\pyc_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\pyc_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\pyc_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2776	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2776	AcroRd32.exe
2776	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2324 wrote to memory of 2832	2324	cmd.exe	31
PID 2324 wrote to memory of 2832	2324	cmd.exe	31
PID 2324 wrote to memory of 2832	2324	cmd.exe	31
PID 2832 wrote to memory of 2776	2832	rundll32.exe	32
PID 2832 wrote to memory of 2776	2832	rundll32.exe	32
PID 2832 wrote to memory of 2776	2832	rundll32.exe	32
PID 2832 wrote to memory of 2776	2832	rundll32.exe	32

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Stub.pyc
1⤵
- Suspicious use of WriteProcessMemory
PID:2324
- 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:2832
- - 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⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2776

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
49bdc7185ba6e48f6c8e7c85011d1782

SHA1
3d218f5ee6514086883c79b62a1abd26e74ad556

SHA256
98c564c4617ad20ef65949149fe0bd4ed8ff7964195d60ed7e3d698eaa04bb10

SHA512
6646901592d86810894ca20fabe75b464ece623a72f729382fc40171a6a8b4566d3b50bb3c3d479c98bda64826f933ab7f43037c6e82344cde766f832a0ad0cf

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