3f45b4acd905e47dbc1357ec44040af6e1fcb68fd09d8bacccad0d729be1d5da

Analysis

max time kernel
1558s
max time network
1559s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
12-08-2024 09:52

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General

Target

Stub.pyc
Size

875KB
MD5

01e9f7b0c0143701032f7848d9aae1df
SHA1

da03e106fece7cf9c0987f41482cf74d12210552
SHA256

5978b1262d15e43a593711b6e1876f6d34446962ed0cf740b39b405862d11c70
SHA512

f9648f045faff44500abb6772f8818aaf49908bf90c7b45c741c352cef617841f6ccd14bf6e6b6584ba61431ed13625825443f5a40d9ddfbddfb72f48e726488
SSDEEP

12288:O3ghyi9BfhOeNMCEu3aKCez4o3qdnuPuQy2r4qtJ7SMNddH1qCKWzFYQmSbnkVXF:O3ghy+UeNaubCez4mvxbrDHvkqzkNF

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
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\pyc_auto_file\	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
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\.pyc	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
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

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2720	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2720	AcroRd32.exe
2720	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1884 wrote to memory of 2972	1884	cmd.exe	31
PID 1884 wrote to memory of 2972	1884	cmd.exe	31
PID 1884 wrote to memory of 2972	1884	cmd.exe	31
PID 2972 wrote to memory of 2720	2972	rundll32.exe	32
PID 2972 wrote to memory of 2720	2972	rundll32.exe	32
PID 2972 wrote to memory of 2720	2972	rundll32.exe	32
PID 2972 wrote to memory of 2720	2972	rundll32.exe	32

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Stub.pyc
1⤵
- Suspicious use of WriteProcessMemory
PID:1884
- 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:2972
- - 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:2720

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

Replay Monitor

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Downloads

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

Filesize
3KB

MD5
36fc0f8d432e0d771bbb930b8ba19317

SHA1
404a3dd6505da9978cd51ef3dee6bb6ca6b537d4

SHA256
863b2d0b5f8d0ab5b27c87811a8bc86d9feca20f6602f8fe523aac88ef82c00c

SHA512
72bc6cae2f16a60d7f4efe54b584233b039ac9bda20860f76f29d011755ab13bd07633ed36812d074aaa42c9d37f9b88c9208d55a741cf5c76578a155535e61d

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