faad96bbcc51f115c9edd691785d1309e7663b67dcfcf7c11515c3d28c9c0f1f

Analysis

max time kernel
120s
max time network
140s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
26/03/2024, 21:41

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General

Target

MinGW64/bin/lib/encodings/big5.py
Size

1019B
MD5

d0911306b2bb0bee8d62ca4dc40b8957
SHA1

bc539c7e7e0ca9f23c6a9668b100e46869d9f527
SHA256

98fac6f86a20dd05da197e2058176ebfd47edee7074c3248f5f48fe0fb672d7c
SHA512

0639b0d4fc1a4c3a69e44a2ef049eae96e82bd24b240ffb489b56ef35be7c2739d13fe6d6649b7267b830e0a63571e304baa3f748812f87f684aead0d69eb8c7

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-1-5-21-330940541-141609230-1670313778-1000_CLASSES\py_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\.py	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\.py\ = "py_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\py_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\py_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\py_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\py_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\py_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
2456	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2456	AcroRd32.exe
2456	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2836 wrote to memory of 2556	2836	cmd.exe	29
PID 2836 wrote to memory of 2556	2836	cmd.exe	29
PID 2836 wrote to memory of 2556	2836	cmd.exe	29
PID 2556 wrote to memory of 2456	2556	rundll32.exe	32
PID 2556 wrote to memory of 2456	2556	rundll32.exe	32
PID 2556 wrote to memory of 2456	2556	rundll32.exe	32
PID 2556 wrote to memory of 2456	2556	rundll32.exe	32

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\MinGW64\bin\lib\encodings\big5.py
1⤵
- Suspicious use of WriteProcessMemory
PID:2836
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\MinGW64\bin\lib\encodings\big5.py
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2556
- - 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\MinGW64\bin\lib\encodings\big5.py"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2456

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

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Downloads

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

Filesize
3KB

MD5
7af78b888c492db0b2bf36babe1508b8

SHA1
8d5c56a67c5a56a29586ae45dc1aa4f26d6ce4b0

SHA256
0594883573fbc874164f3340779e798b27a274778641997fbd704dbba4b73373

SHA512
0df22d06eb31ca4bf87a2e915c098bc023a7687dc2d7c80edf13d0604ca41f863aa4386babf12b8390af158ee8d891343f515d9ca62b76265dcf76da58d53a6f

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