8ae976c8b28baa222b4fd527cccbad2d1102ed21c68f9082c53835fde94c2397

Analysis

max time kernel
150s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
28/03/2025, 13:40

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General

Target

encodings/big5.py
Size

1019B
MD5

d0911306b2bb0bee8d62ca4dc40b8957
SHA1

bc539c7e7e0ca9f23c6a9668b100e46869d9f527
SHA256

98fac6f86a20dd05da197e2058176ebfd47edee7074c3248f5f48fe0fb672d7c
SHA512

0639b0d4fc1a4c3a69e44a2ef049eae96e82bd24b240ffb489b56ef35be7c2739d13fe6d6649b7267b830e0a63571e304baa3f748812f87f684aead0d69eb8c7

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 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000_Classes\Local Settings	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2824	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2824	AcroRd32.exe
2824	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1240 wrote to memory of 2924	1240	cmd.exe	31
PID 1240 wrote to memory of 2924	1240	cmd.exe	31
PID 1240 wrote to memory of 2924	1240	cmd.exe	31
PID 2924 wrote to memory of 2824	2924	rundll32.exe	33
PID 2924 wrote to memory of 2824	2924	rundll32.exe	33
PID 2924 wrote to memory of 2824	2924	rundll32.exe	33
PID 2924 wrote to memory of 2824	2924	rundll32.exe	33

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\encodings\big5.py
1⤵
- Suspicious use of WriteProcessMemory
PID:1240
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\encodings\big5.py
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2924
- - 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\encodings\big5.py"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2824

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
f228688435676abcb2ddeee4b1dff93d

SHA1
c5fca6f3aa81efd0a69f50e2d1283b6f50d45963

SHA256
70bc383d1a8821122083cd36bb684601561441634231e069c90ec1c32fefe97f

SHA512
5f6885534039abbe4afa2447b245b3e662bbc89f527decb3fca39c12f3e6fc0a2cb99fcbc885c9351a31dcaf2e80fc7ce817d17cbed947b8e54de83c630ad813

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