399b296b21cca504e716f53dddc8d01ab781b4592306320cb8b80ddcdfda333d

Analysis

max time kernel
102s
max time network
17s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
03-08-2024 03:22

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General

Target

Stub.pyc
Size

178KB
MD5

03c51d5d2690c613e085153d7cca80a2
SHA1

b955fb0d42ea8f445ad6fb2395bf8480e028693a
SHA256

0dbff9c19efe825382a31a93808cc9e6ed55c7112788d908e45dd9e382618f18
SHA512

431f9bbacab31d405613c740edf147f5c7fdd8ce574e1a3b23787c3a3b5913694313d7a94396b16599f7f81c1675a58f2d968eac39fa2313d3189771caefb584
SSDEEP

3072:iPGcc87YoHEj0SsnjCuGUvO92ebnxVZ7uuG6ZX9cvVaNqSgmZ/3MJ1yBx/S0+E:iPGQ7jcvJ92eb1cvVyd3Yy+E

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
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\Read	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\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
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	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\pyc_auto_file\	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
592	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
592	AcroRd32.exe
592	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1760 wrote to memory of 2132	1760	cmd.exe	31
PID 1760 wrote to memory of 2132	1760	cmd.exe	31
PID 1760 wrote to memory of 2132	1760	cmd.exe	31
PID 2132 wrote to memory of 592	2132	rundll32.exe	32
PID 2132 wrote to memory of 592	2132	rundll32.exe	32
PID 2132 wrote to memory of 592	2132	rundll32.exe	32
PID 2132 wrote to memory of 592	2132	rundll32.exe	32

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Stub.pyc
1⤵
- Suspicious use of WriteProcessMemory
PID:1760
- 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:2132
- - 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:592

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
7bbf39b27eb8867b0c19d1f6b3c5edc5

SHA1
f9e57cec59d8f8ae60c6c0bd808bd1dc019824c3

SHA256
fdb88027c671c4a1f3e5f23d6428ebfb2ba7e32b7dfdf42f4f57dd96a6700979

SHA512
a8fea1a83a2d895d6112ae390527f07b1e867fef84cd9cda5c51fb2b9112dd13b35be67a1cc6fc991a0d6a29e41ca855aab19f6163e06414db557e292ad2aa8b

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