e746f10a245a5cb3d8bf010dfa30e7de6430e1f248e88d9acbb88596d01c53be

Analysis

max time kernel
118s
max time network
121s
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/cmd_module.py
Size

371B
MD5

131cf3397c0439093aa20b9bfb412b67
SHA1

34a1757680ee2586091951748aa02af76f1513aa
SHA256

7da58f780b7ae4dc1b97542a683190bc4bfc8231fedf82eff22682f61d404150
SHA512

ff01ef3706afd68392a5bf41a0992b83a5047a93ee4efd69675acdc7af122ccc8d0ec02a0f107f56503d011939be45a2131de9a743559384c590929879463c34

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
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\py_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\.py\ = "py_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\py_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\py_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\py_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\.py	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\py_auto_file\shell\Read	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_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
2448	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2448	AcroRd32.exe
2448	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1996 wrote to memory of 2640	1996	cmd.exe	29
PID 1996 wrote to memory of 2640	1996	cmd.exe	29
PID 1996 wrote to memory of 2640	1996	cmd.exe	29
PID 2640 wrote to memory of 2448	2640	rundll32.exe	30
PID 2640 wrote to memory of 2448	2640	rundll32.exe	30
PID 2640 wrote to memory of 2448	2640	rundll32.exe	30
PID 2640 wrote to memory of 2448	2640	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Chimera-1.4\modules\cmd_module.py
1⤵
- Suspicious use of WriteProcessMemory
PID:1996
- 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\cmd_module.py
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2640
- - 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\cmd_module.py"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2448

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
c832084cd02677baff470f79faf174f4

SHA1
5138ba4c221dfd5bfbeb012060c44bc39ac3db41

SHA256
efc94ede84d2d5bafae2cf802fef6769d381f6b714467c009803e6f28fb4caaf

SHA512
6d0825ee13c9bb1ef23e0b46b3dbe5cff10f0540a150adcf3e0322d005e4280b555f19da5146eb5130d887ee1a7508181fb6ac38f52ec5232278b856c9e6b3ea

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