e746f10a245a5cb3d8bf010dfa30e7de6430e1f248e88d9acbb88596d01c53be

Analysis

max time kernel
140s
max time network
139s
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/file_module.py
Size

2KB
MD5

3a88211ab91a01da69b89d468cbc04e5
SHA1

e53b59c1f8c165d8f741355cc0fca96984ade854
SHA256

1e412cdbcf47de430c9f41d5b9582ab7b899bfe781b38219a708ab8ff1e9f86a
SHA512

d6deebcec24513217e544e58d37d2cf33c5a46c2ce488d4af8575c13ddbc4b999b2040c8437e8cf5c6e642388315bf9b2f5c94539c54a7d3c7efd8de4f7b94a8

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-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\py_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\py_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\.py\ = "py_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\py_auto_file\shell\Read	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\py_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\.py	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\py_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\py_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
940	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
940	AcroRd32.exe
940	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2576 wrote to memory of 1972	2576	cmd.exe	28
PID 2576 wrote to memory of 1972	2576	cmd.exe	28
PID 2576 wrote to memory of 1972	2576	cmd.exe	28
PID 1972 wrote to memory of 940	1972	rundll32.exe	31
PID 1972 wrote to memory of 940	1972	rundll32.exe	31
PID 1972 wrote to memory of 940	1972	rundll32.exe	31
PID 1972 wrote to memory of 940	1972	rundll32.exe	31

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Chimera-1.4\modules\file_module.py
1⤵
- Suspicious use of WriteProcessMemory
PID:2576
- 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\file_module.py
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1972
- - 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\file_module.py"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:940

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
860c6f0c377d54e14ea962051aa45624

SHA1
ed9192f49412b85ddec381af5776928157154d5d

SHA256
c7719baceb1a3ac82ed2c2ac9fa23f28820ad0b9e0ba1a423ffd46574b0cf7ff

SHA512
65e94fbe7d9b63706f8f6946ec8669ccfda1af1f37db2ed06a80b11a2dfb0c4877902051d308386555024e995ef495d4f47e7b803b939d8ffc7d7f4bb1e4142e

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