e746f10a245a5cb3d8bf010dfa30e7de6430e1f248e88d9acbb88596d01c53be

Analysis

max time kernel
122s
max time network
126s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
22/02/2024, 19:49

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General

Target

Chimera-1.4/modules/lock_module.py
Size

571B
MD5

13cf2aa77c355912b2653ea6ed97357d
SHA1

a1c6f882a9277b001f052103aff6e7d51caf7d41
SHA256

2587865de78cc78ec76c57e05e90c6c3f9a1fd7a654f28978cfc6b681b843caa
SHA512

6e7d9f166f59ab61395b66dc435a858619c4f97b7f71d60776dcf3c3391f1c0a9e11bca40ff41bfa17f31e9ba5940d4fb888ddd36787dde515df4d6b24d7603f

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-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\.py	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\.py\ = "py_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\py_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\py_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\py_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\py_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\py_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\py_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_Classes\Local Settings	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2724	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2724	AcroRd32.exe
2724	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2092 wrote to memory of 2548	2092	cmd.exe	29
PID 2092 wrote to memory of 2548	2092	cmd.exe	29
PID 2092 wrote to memory of 2548	2092	cmd.exe	29
PID 2548 wrote to memory of 2724	2548	rundll32.exe	30
PID 2548 wrote to memory of 2724	2548	rundll32.exe	30
PID 2548 wrote to memory of 2724	2548	rundll32.exe	30
PID 2548 wrote to memory of 2724	2548	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Chimera-1.4\modules\lock_module.py
1⤵
- Suspicious use of WriteProcessMemory
PID:2092
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Chimera-1.4\modules\lock_module.py
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2548
- - 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\Chimera-1.4\modules\lock_module.py"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2724

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
0227356dcb032263dbe22a9479485b18

SHA1
c9fcb406dce7cd0a8e0526586cd58e3830e81698

SHA256
44ac8ba58df00079b17edcb22329c8fdfe9a60c4414d7be99a1b581ffdc33231

SHA512
f5ab35ea4fa924cb91fc4e46b83aff05938ed329e37c261be8405926d172d12ca446c7dd867f2c3035076fb051ec3ff66680a3e1ca56a7ab37250de7f07e14a1

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