a6f33d935bd9c016b3d0914fd35d0985fbfb52018048a90e93f83984be09da9d

Analysis

max time kernel
120s
max time network
127s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
09/03/2025, 14:50

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General

Target

mbcs.py
Size

1KB
MD5

037692440a6148a06d5be8de5cd26197
SHA1

1d70e4bd36be1c153b5ef3c21e060f4da12211c8
SHA256

f6ed445ed537c9f856d8defe8b56505727737d0dc9348d0a877abedab4bdd864
SHA512

07950d19132d12b65f641c61e473b0316ecb3307a617057626ae25e9c77804331ad7286b29a20438e1a63bd201e19e4f7bb4eb3f9b6b507e9c77b2534685e12f

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-1-5-21-3533259084-2542256011-65585152-1000_Classes\Local Settings	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2884	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2884	AcroRd32.exe
2884	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2088 wrote to memory of 2620	2088	cmd.exe	32
PID 2088 wrote to memory of 2620	2088	cmd.exe	32
PID 2088 wrote to memory of 2620	2088	cmd.exe	32
PID 2620 wrote to memory of 2884	2620	rundll32.exe	33
PID 2620 wrote to memory of 2884	2620	rundll32.exe	33
PID 2620 wrote to memory of 2884	2620	rundll32.exe	33
PID 2620 wrote to memory of 2884	2620	rundll32.exe	33

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\mbcs.py
1⤵
- Suspicious use of WriteProcessMemory
PID:2088
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\mbcs.py
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2620
- - 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\mbcs.py"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2884

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
986ee0de7b5aed3a6d783b0b6c98c351

SHA1
66960034769425caa409059d302210a8d7a6146e

SHA256
c385d355bd193080d370e97409d0a372145243c1abe7eae5349e1460873b4847

SHA512
195758bfd31f9034f40806b12141c4bb4d0ddb776406742a1538ee4a542225bd681c6e43f7ed57e83039c28632eee9541f565f89c321e6ef53e2c1f26f247b7f

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