fe60b9bf14242f198dad76b2fe62f9818c44958a882b05ff3c814e5be3b059ae

Analysis

max time kernel
120s
max time network
123s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
10/03/2024, 10:40

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General

Target

User (Primary; 8705f821-91c4-44c8-bc63-3128ab519c2a)/cdl-worker-settings.json
Size

270KB
MD5

c83ac5be7fbce9642234ec8b9f167b68
SHA1

1a9b02f11acd751bdbf0512902047f9fde5939e4
SHA256

d4ca66d5a14b69c3e18561ce02cafb0a5118716a14edde9cb6e907f7b8ba295b
SHA512

9b47fe7111599b1d761f7d2249cc0d10e56e4a9918d87e1b893e9ca2bf61f8a4ef3b54341901754667bb0732183a22d947ee17812f9c8e459c28f2093b2a6601
SSDEEP

6144:61fKhR/03A73AM9oA9oyy2NlO6FxtIAcC:Z03A73AM9oA9oYNlaAcC

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-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\json_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\json_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\json_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\.json\ = "json_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\.json	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\json_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\json_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\json_auto_file	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2604	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2604	AcroRd32.exe
2604	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2248 wrote to memory of 2632	2248	cmd.exe	29
PID 2248 wrote to memory of 2632	2248	cmd.exe	29
PID 2248 wrote to memory of 2632	2248	cmd.exe	29
PID 2632 wrote to memory of 2604	2632	rundll32.exe	30
PID 2632 wrote to memory of 2604	2632	rundll32.exe	30
PID 2632 wrote to memory of 2604	2632	rundll32.exe	30
PID 2632 wrote to memory of 2604	2632	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\User (Primary; 8705f821-91c4-44c8-bc63-3128ab519c2a)\cdl-worker-settings.json"
1⤵
- Suspicious use of WriteProcessMemory
PID:2248
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\User (Primary; 8705f821-91c4-44c8-bc63-3128ab519c2a)\cdl-worker-settings.json
  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\User (Primary; 8705f821-91c4-44c8-bc63-3128ab519c2a)\cdl-worker-settings.json"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2604

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
44d74de99f86c06d89f82b0f6fe682a9

SHA1
8df2491e966a49a2710cd4580fec4a1f65c4a18c

SHA256
986027fbab25832589a1108d4657b725cb0c642efc9a04cc9422710e38eb2542

SHA512
1de98b11951d5b0f3de85ff636ca72bcc3f9f8b2eb7035c685e99df6d4d74e321cf16b2d27633ac9f73cd3cc4e999dfc2ddcbefe07982d8cfe69e1b6c5cee340

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