fc788d41f02145ba4f9086674464826cc596a0843b73b285f2ae3426439b2d82

Analysis

max time kernel
120s
max time network
134s
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/Keystrokes.class
Size

2KB
MD5

4bae8ba695281169a75caddaf3972f9c
SHA1

43c368b8a422a47e1529b7f6c5f85fbe54a69978
SHA256

35892aaf0bbc18f15c3b323133d12cdd625326835c6a61ab223af22c83fd2364
SHA512

d2654ed484c82d80058ba020d4df830d8a1e66778b24e08bce21c9c617ae11263904b14a99ec4c8ebdd452991dfd9cd8a7e2f54ab0d0bbfdace773f605cd0a5a

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-1-5-21-330940541-141609230-1670313778-1000_CLASSES\class_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\.class	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\class_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\class_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\.class\ = "class_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\class_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\class_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\class_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
2144	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2144	AcroRd32.exe
2144	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2192 wrote to memory of 2644	2192	cmd.exe	29
PID 2192 wrote to memory of 2644	2192	cmd.exe	29
PID 2192 wrote to memory of 2644	2192	cmd.exe	29
PID 2644 wrote to memory of 2144	2644	rundll32.exe	30
PID 2644 wrote to memory of 2144	2644	rundll32.exe	30
PID 2644 wrote to memory of 2144	2644	rundll32.exe	30
PID 2644 wrote to memory of 2144	2644	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Main\Keystrokes.class
1⤵
- Suspicious use of WriteProcessMemory
PID:2192
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Main\Keystrokes.class
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2644
- - 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\Keystrokes.class"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2144

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
a0b809326f8a5d11d3a2d509e1e2cca1

SHA1
ba9aa3cb1f06344e79c84805d2a8d17de7fda25d

SHA256
c6e879efce305bbac2302dd12e3309fb72ff5dcd2e86c589446d9ea3efdcfd3e

SHA512
1a25c9bc0d0241d40c2a60e064f8aad7e272ec9f3c2df90479c8182b7444fa2cdbc02d85ca8692237a0b6a7079b9f0aa1084cdf09f629ba793864dbc531bf46e

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