e746f10a245a5cb3d8bf010dfa30e7de6430e1f248e88d9acbb88596d01c53be

Analysis

max time kernel
120s
max time network
124s
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/lib/helpers.py
Size

4KB
MD5

023f7ac0e93f3deaef9f1403b9d7d205
SHA1

ed3f65011a3ff9f29d336639172f4504fda0a0e3
SHA256

2e99511ce8c0af35bcb92de5e7a02849ffd16d438bd9bc635021742e82661332
SHA512

6367bf1747959b006cd3ec3ec2e6578c9ec8e7bb38e87782b24632c6c4f7951a25d79a22df8964eaf89af3528426dc2a6672f4c99f198c8828484bf6167d60ea
SSDEEP

48:katwPFR7E7D6enfcrGH26O1hnATwtQsrItHtNocvKIixdrbjRB+2Nbw:k96D6eUGeFtQvtNokixdr2

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\Local Settings	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	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
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\py_auto_file\shell\Read\command	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

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2388	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2388	AcroRd32.exe
2388	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2276 wrote to memory of 2812	2276	cmd.exe	29
PID 2276 wrote to memory of 2812	2276	cmd.exe	29
PID 2276 wrote to memory of 2812	2276	cmd.exe	29
PID 2812 wrote to memory of 2388	2812	rundll32.exe	30
PID 2812 wrote to memory of 2388	2812	rundll32.exe	30
PID 2812 wrote to memory of 2388	2812	rundll32.exe	30
PID 2812 wrote to memory of 2388	2812	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Chimera-1.4\lib\helpers.py
1⤵
- Suspicious use of WriteProcessMemory
PID:2276
- 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\lib\helpers.py
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2812
- - 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\lib\helpers.py"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2388

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
e9f3f1e89d9f63e05e43bc490ac2e81e

SHA1
c55470e721d02a1c7c5c3a21284cac3bcb29bffe

SHA256
be2763ee46a400f6d67ba53e369b0e1154af0f08178cf3c10292f2e5a18185ed

SHA512
1f2ed7abef15e9fca4e2d2b554e92783d47eeb6fa4210076e6157ea8b6fdbd41552d11a6d9c5fb609f140c31b0c1ca4f2e63d6b0642c1081908e7ee208ba7fbd

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