e746f10a245a5cb3d8bf010dfa30e7de6430e1f248e88d9acbb88596d01c53be

Analysis

max time kernel
117s
max time network
123s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
22-02-2024 19:49

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General

Target

Chimera-1.4/modules/__init__.py
Size

210B
MD5

4e87bd1ad72eb544994b7c7f7387703a
SHA1

988ebb5498ada900672ea2e6c8048c590c463267
SHA256

5c25a357426ccc88fa52dbaab69345db1739e6b744970953d109328e1d4bd39e
SHA512

795830b2712b3c77e93eb9a964ee4441cab436134175b4caee1b88245d14a6ab14e59480bbab24c722769705e9471940aa47a307eabf57b6ccb1e588675fce0d

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-1-5-21-330940541-141609230-1670313778-1000_CLASSES\py_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\py_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\.py	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\py_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_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-1-5-21-330940541-141609230-1670313778-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\.py\ = "py_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\py_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\py_auto_file\shell	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2456	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2456	AcroRd32.exe
2456	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1760 wrote to memory of 2524	1760	cmd.exe	29
PID 1760 wrote to memory of 2524	1760	cmd.exe	29
PID 1760 wrote to memory of 2524	1760	cmd.exe	29
PID 2524 wrote to memory of 2456	2524	rundll32.exe	30
PID 2524 wrote to memory of 2456	2524	rundll32.exe	30
PID 2524 wrote to memory of 2456	2524	rundll32.exe	30
PID 2524 wrote to memory of 2456	2524	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Chimera-1.4\modules\__init__.py
1⤵
- Suspicious use of WriteProcessMemory
PID:1760
- 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\__init__.py
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2524
- - 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\__init__.py"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2456

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
649c0a1c1db2093342804c56d0c9e8d9

SHA1
2b94967c377c323b3bca2fc065f08a2cf501ee8b

SHA256
6b2363c986ef067ff49b7b0eb475d8d72dab22d27548423a56783814eb09b3c7

SHA512
0a7e681d3660d3129569a91aff9b3ef6ca0d6c2c7c9a602e6655311895e86ecf05c250b52870dec594d5e181feeb15c61df73026aa3bafc3e91a22645d2074f4

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