d94259329e042360d48ba2d18cc630277afdaaeebf389dced4d5070831e6fe33

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
09-12-2024 23:00

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General

Target

encodings/big5.pyc
Size

2KB
MD5

a3009f4b2f64d843b6f4bd69e28da679
SHA1

98ad5db3a8ffeca09bc5fbc24ecfdf4f4821359c
SHA256

385ecbb815e394c4247aa125c352f55ebcc9a3fd272bac494b25a31a576aaa1b
SHA512

755a48c2f0d7f96c3d1573a645aa9b1cf8ee8f88650fbdaba9ab54637135fbc97e2db5a29a1abb3b2a67e4b9ab9cff4a0efe126ed28e7b3b3319fd9ebbdb724b

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
2296	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2296	AcroRd32.exe
2296	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2096 wrote to memory of 2108	2096	cmd.exe	32
PID 2096 wrote to memory of 2108	2096	cmd.exe	32
PID 2096 wrote to memory of 2108	2096	cmd.exe	32
PID 2108 wrote to memory of 2296	2108	rundll32.exe	33
PID 2108 wrote to memory of 2296	2108	rundll32.exe	33
PID 2108 wrote to memory of 2296	2108	rundll32.exe	33
PID 2108 wrote to memory of 2296	2108	rundll32.exe	33

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\encodings\big5.pyc
1⤵
- Suspicious use of WriteProcessMemory
PID:2096
- 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.pyc
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2108
- - 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.pyc"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2296

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
ef1b77de36c30d3affafb4be8a00ce6b

SHA1
25ff86aff928b6a0dcb2a795e8d16ab490dcb772

SHA256
f2bda0faa7e426ccaeb54a1c0ace508ead756fa0286ec5aaea8653ae303a14f9

SHA512
fcf927b40e56b6977b11458b12c046597cbabc0c993c381f3ce0039ca41f727aa2754ad82f6dfe34b7bdb21f1c0630b1585acc138b34dcbef0b2312342ff09b1

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