22c715e0a0c48b1ee1cf110c6656dc441c04a6fb4acc6efacec7cdc98f5037c3

Analysis

max time kernel
120s
max time network
123s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
24/08/2024, 05:03

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General

Target

Stub.pyc
Size

874KB
MD5

8fc5a06161d47317f5a97f2c76cbba6e
SHA1

6438cc8edc9bd08ddfba78079b352c6aea92e945
SHA256

5676900dbe7afa5c9d70354a7c553db29bdd3acca73449e6ae6f276c2fec6b56
SHA512

fb1c7d2aa90a585184a269b2c1d014e3bdc7a97e4dc014a6915b28582817181907c07b0d628cd1e90b736ccdab4a0880f74b72aa2698aafb230bd112e1e5e0f5
SSDEEP

24576:7Q7kerdwCF6o753sWIqDDOKB/hCcYr0o3eEu:Pkss1YrVO9

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-1-5-21-3450744190-3404161390-554719085-1000_CLASSES\pyc_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3450744190-3404161390-554719085-1000_CLASSES\pyc_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3450744190-3404161390-554719085-1000_CLASSES\.pyc\ = "pyc_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3450744190-3404161390-554719085-1000_CLASSES\pyc_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3450744190-3404161390-554719085-1000_CLASSES\pyc_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3450744190-3404161390-554719085-1000_CLASSES\pyc_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3450744190-3404161390-554719085-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3450744190-3404161390-554719085-1000_CLASSES\.pyc	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3450744190-3404161390-554719085-1000_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
2828	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2828	AcroRd32.exe
2828	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 600 wrote to memory of 1508	600	cmd.exe	31
PID 600 wrote to memory of 1508	600	cmd.exe	31
PID 600 wrote to memory of 1508	600	cmd.exe	31
PID 1508 wrote to memory of 2828	1508	rundll32.exe	32
PID 1508 wrote to memory of 2828	1508	rundll32.exe	32
PID 1508 wrote to memory of 2828	1508	rundll32.exe	32
PID 1508 wrote to memory of 2828	1508	rundll32.exe	32

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Stub.pyc
1⤵
- Suspicious use of WriteProcessMemory
PID:600
- 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:1508
- - 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:2828

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
4d9850dbfae1098b13459acb4ab2abdd

SHA1
2044737412007e84b46d1e2fb03f36550a7f0efa

SHA256
ff82e3306e6acfea6cdbad678c6bb1e85199b6a679e9a919b8c9f4d5356cdc7a

SHA512
d073b6dc7c0b649864d6c2a3a45e6cf409f8880ab5fb3f8162b6c6297657b85454f8a6431b18d6a85d206a6866b03b0133b50b80e94ee9f17006c974570c02b5

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