e746f10a245a5cb3d8bf010dfa30e7de6430e1f248e88d9acbb88596d01c53be

Analysis

max time kernel
121s
max time network
122s
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/lib/input_commands.py
Size

321B
MD5

cbd3ad97d968b57ff93caca93ee9e2c6
SHA1

44d2afb606de5d496b32453739b256a8b8025601
SHA256

c11f6dba6f9781b2a13795bb47d401b12f31dad40a9c3e2032f3d5712098d52f
SHA512

37ea965d9db8dda7bd4c61b41c8be4721445fbfb195e2259725df76e8656eae470d1025418cf42904722f4d16f6681df7282d77633ea36169d6b6c7fa5edf319

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-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\py_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\py_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\py_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\py_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_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-1-5-21-1298544033-3225604241-2703760938-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\py_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\.py	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\.py\ = "py_auto_file"	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3068	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3068	AcroRd32.exe
3068	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2012 wrote to memory of 2632	2012	cmd.exe	29
PID 2012 wrote to memory of 2632	2012	cmd.exe	29
PID 2012 wrote to memory of 2632	2012	cmd.exe	29
PID 2632 wrote to memory of 3068	2632	rundll32.exe	30
PID 2632 wrote to memory of 3068	2632	rundll32.exe	30
PID 2632 wrote to memory of 3068	2632	rundll32.exe	30
PID 2632 wrote to memory of 3068	2632	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Chimera-1.4\lib\input_commands.py
1⤵
- Suspicious use of WriteProcessMemory
PID:2012
- 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\input_commands.py
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2632
- - 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\input_commands.py"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:3068

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
a0b421e3ee5ee3bf920d2bec9403bbf6

SHA1
8b6994c0257cfa454526ba00c4a8aaf817298989

SHA256
0c5bc0d1527f7c4221d94d3ac4d415f268b722f8cd00bf3df2fbb3e7d7fd7221

SHA512
a120022c2e04d734b19ad1963251246c04180bcc3a2899c1ef8574d2618fb640374d8950d0f823c284fbf6b0b15bee1b0e1f53c49178cf96c477db30eb40e058

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