841a98464457d2fceff8a35e6b575b1e5e0681f7232cb3c2b94c698e38960a25

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25-03-2024 21:05

240325-zxdnnahe48 3

25-03-2024 20:59

25-03-2024 20:56

25-03-2024 20:51

25-03-2024 20:45

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Analysis

max time kernel
30s
max time network
18s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
25-03-2024 20:59

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General

Target

Prefetch/TVSU.EXE-8F40E663.pf
Size

14KB
MD5

54689efd5d3c049ddbe67cb7f60e62f9
SHA1

f14ff274326a1f8e701c054b5cef8cc039ddf54e
SHA256

b18bfd1e80bbb5b67a618c87b8749676a5d3fb6b8568762c742614adedf663e8
SHA512

626ad72b52a8f043378ed240f7ec06ad6c8007cdbf15cd1b2b2cfe7249c6a9298d7e81ceea4a8684c5734dbd676eb32a7f870359f54232b787bff87fb8afa947
SSDEEP

384:eCNwuWQGBYt10rcyPYzCUlnnnYDwe746hX3dG2Bot/x1:eCzCYtScyPYhnYDwCVX3dG2Bof1

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\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pf_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\.pf	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\.pf\ = "pf_auto_file"	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pf_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-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pf_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pf_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pf_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pf_auto_file\shell\Read\command	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2524	AcroRd32.exe
2524	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2488 wrote to memory of 2624	2488	cmd.exe	29
PID 2488 wrote to memory of 2624	2488	cmd.exe	29
PID 2488 wrote to memory of 2624	2488	cmd.exe	29
PID 2624 wrote to memory of 2524	2624	rundll32.exe	30
PID 2624 wrote to memory of 2524	2624	rundll32.exe	30
PID 2624 wrote to memory of 2524	2624	rundll32.exe	30
PID 2624 wrote to memory of 2524	2624	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Prefetch\TVSU.EXE-8F40E663.pf
1⤵
- Suspicious use of WriteProcessMemory
PID:2488
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Prefetch\TVSU.EXE-8F40E663.pf
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2624
- - 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\Prefetch\TVSU.EXE-8F40E663.pf"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:2524

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
c5b7526483aad2f0ebd80d66528be869

SHA1
d1e9027e002a395058b46fdf73e3c384a8278319

SHA256
0e53179b4a97a902b0f8cfca36131f12476fdcb105c7b098a4a87ae54df6eed6

SHA512
a98962b48b3a88a1ba7bcbb816bc5065006fce0105f8e8aeb5a52b04f24986628696ffebd4d114992fa3739d7fdc3b2e2e19d6e2e30343539cbd219590edd26a

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