31a545b7556299c74f5fb31ec19a010d39081bbc723957f57dd07430b2903c92

Analysis

max time kernel
79s
max time network
19s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
20-07-2024 12:08

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General

Target

Stub.pyc
Size

874KB
MD5

7ff5fb97d67926d26087385648d3e761
SHA1

4671c885eaecc4bdfcd8deb301c351ad20d0f430
SHA256

0927a281105871640cfcc963736e6799492964e9aaf1ed313902963331fd0fdb
SHA512

b48002a80ae19a33ccaf46c19014ef03feebc72f44457f04afdf69815ebba1f6d6d0de5eb0bb83bdf899933fa5ab2f18e1df9eade4d7d2943a9d84343be5755b
SSDEEP

24576:Szz3KkQY/1lkDs8RsjJgN0jJJayYcMRb0ec0:Szxbkgw0vrk

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
Key created	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\pyc_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\pyc_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_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-1-5-21-2212144002-1172735686-1556890956-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\.pyc\ = "pyc_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\pyc_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\pyc_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\pyc_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\.pyc	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2500	AcroRd32.exe
2500	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1188 wrote to memory of 2752	1188	cmd.exe	31
PID 1188 wrote to memory of 2752	1188	cmd.exe	31
PID 1188 wrote to memory of 2752	1188	cmd.exe	31
PID 2752 wrote to memory of 2500	2752	rundll32.exe	32
PID 2752 wrote to memory of 2500	2752	rundll32.exe	32
PID 2752 wrote to memory of 2500	2752	rundll32.exe	32
PID 2752 wrote to memory of 2500	2752	rundll32.exe	32

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Stub.pyc
1⤵
- Suspicious use of WriteProcessMemory
PID:1188
- 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:2752
- - 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 use of SetWindowsHookEx
    PID:2500

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
a3b708cdff6591294735856ff43ad8d8

SHA1
4dbbbfb50a3edfc0791ff2d7fa3965ce21a398c7

SHA256
0f18c8ed98937eb9cca6b26c10dffc7503461cb073c363171b8638a6fe4caa1e

SHA512
596b48c038063d395b8a9d08cdb1e9e2884972d0ac60cd836387a1c1d27286ea7aa1304454dbc149a25bae510aa826e0a9bbe32ca13a4f7bcc2cc6f147e241d8

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