8ae976c8b28baa222b4fd527cccbad2d1102ed21c68f9082c53835fde94c2397

Analysis

max time kernel
150s
max time network
120s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
28/03/2025, 13:40

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General

Target

encodings/big5hkscs.py
Size

1KB
MD5

465ae23475b55a28c248a0355c429a90
SHA1

08826705a2a30790087251ee3d78299226f1c3a8
SHA256

21d051a00fb5c6a86ba187e0c50e811d659ce00991fd5f5b408f71ebb2ef0f16
SHA512

29e13a9b237a6b4c479999cabff4d134d29efba899a957cbb65bc1e09340077d1768728bbcfb935d8e06bd2006e2c4d218c73106f07dd2ece62fc36e4f9fe3e0

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-1-5-21-1163522206-1469769407-485553996-1000_Classes\Local Settings	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2312	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2312	AcroRd32.exe
2312	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2128 wrote to memory of 300	2128	cmd.exe	31
PID 2128 wrote to memory of 300	2128	cmd.exe	31
PID 2128 wrote to memory of 300	2128	cmd.exe	31
PID 300 wrote to memory of 2312	300	rundll32.exe	32
PID 300 wrote to memory of 2312	300	rundll32.exe	32
PID 300 wrote to memory of 2312	300	rundll32.exe	32
PID 300 wrote to memory of 2312	300	rundll32.exe	32

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\encodings\big5hkscs.py
1⤵
- Suspicious use of WriteProcessMemory
PID:2128
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\encodings\big5hkscs.py
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:300
- - 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\big5hkscs.py"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2312

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
768e314c9323aad483d3a261d7651b6d

SHA1
63edffedf491466349c7bcc9799d8bb5a7990237

SHA256
6f4a3dd749baf9db13d7f10018c901572dfd679160cf7fccda5534794328e6ea

SHA512
832761bb28add3dd1b3005a4925a7038ae44cc9400d81288916af8f88b2d639709071a800de4652e2051ed35a260cd2a0bd1264cbd56131b11a37cc82e4a3d77

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