fc788d41f02145ba4f9086674464826cc596a0843b73b285f2ae3426439b2d82

Analysis

max time kernel
119s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
01/05/2024, 20:34

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General

Target

Main/ClientInfos.class
Size

1KB
MD5

bfdbb5be1d5ef00929f36bf43bb83b19
SHA1

8deb1b48c6cbd62ad851d56e7100ca4c745c86f0
SHA256

06127d96326be6e75cf067e905ec1b427c220ca1c1e5c99df81c6fe73a91073b
SHA512

91b1ba37aeefecd94aa4e7840c1e3fd923093565e398c81824df455c95be361f47069e010a0db0fee1ea88bdc677622867339ad81583d52293fd5f9da1b14347

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-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\class_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\class_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\class_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\class_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\class_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\class_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\.class	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\.class\ = "class_auto_file"	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2784	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2784	AcroRd32.exe
2784	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2276 wrote to memory of 2652	2276	cmd.exe	29
PID 2276 wrote to memory of 2652	2276	cmd.exe	29
PID 2276 wrote to memory of 2652	2276	cmd.exe	29
PID 2652 wrote to memory of 2784	2652	rundll32.exe	30
PID 2652 wrote to memory of 2784	2652	rundll32.exe	30
PID 2652 wrote to memory of 2784	2652	rundll32.exe	30
PID 2652 wrote to memory of 2784	2652	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Main\ClientInfos.class
1⤵
- Suspicious use of WriteProcessMemory
PID:2276
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Main\ClientInfos.class
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2652
- - 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\Main\ClientInfos.class"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2784

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
9d76648caa17ace90d35e2e25d054110

SHA1
e3db7a3d8740602b21e234f6fa4a8f5d53ba8a3f

SHA256
9b02b6b347733b435ed0420e16bb80dd451902e0240f271dab1ddef1da1feea0

SHA512
5efcf7e5929e6cfcf311b751954a8cb99496270c6d4b66ca34849254bf188cad54727ce3479925c2a94f5c659669bfdd02a05faba36bea8b8d04f6f02cc493ae

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