841a98464457d2fceff8a35e6b575b1e5e0681f7232cb3c2b94c698e38960a25

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25/03/2024, 21:05

240325-zxdnnahe48 3

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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, 21:05

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General

Target

Prefetch/SVCHOST.EXE-B878F4CD.pf
Size

6KB
MD5

c2491b8f7d2cef32d879072669c8164b
SHA1

c7f44ba6b814c02c6cc2a7f7de1d4dc05088c78a
SHA256

dad373cd5077c25d752cbb18333cf3d15735f9e50a5428a59f7b10aed9a69955
SHA512

339ac91959f04a3b7276ee40b77504f0256c68b0ec1d39ad1e3d83d44e955c07f1795fe9559f96e4ff2037f3fb0789a93d8c3cce386bb5f3cdac4ba8947852bc
SSDEEP

192:sKElmv/0shBGcYAiY94lbuWw4q0aqXltW7GS:LlH0snrZRZz0tXlYaS

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\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
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
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\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
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
2256	AcroRd32.exe
2256	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1524 wrote to memory of 2560	1524	cmd.exe	29
PID 1524 wrote to memory of 2560	1524	cmd.exe	29
PID 1524 wrote to memory of 2560	1524	cmd.exe	29
PID 2560 wrote to memory of 2256	2560	rundll32.exe	30
PID 2560 wrote to memory of 2256	2560	rundll32.exe	30
PID 2560 wrote to memory of 2256	2560	rundll32.exe	30
PID 2560 wrote to memory of 2256	2560	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Prefetch\SVCHOST.EXE-B878F4CD.pf
1⤵
- Suspicious use of WriteProcessMemory
PID:1524
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Prefetch\SVCHOST.EXE-B878F4CD.pf
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2560
- - 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\SVCHOST.EXE-B878F4CD.pf"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:2256

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
a7b9549c1bbdd07d48f12652a6e93030

SHA1
714c58ac82c2bfe479e92583e3f9c8efba207a03

SHA256
c1092725462aa84dac1a30acceb4be70e7a4b696b3aa17428e24edbb6c1b12f8

SHA512
042a67ce79d4af263ccf4b10b1ce733a53c5b85a5223543671a4c213546fe4c853a8452983491560acb9978718577e81adcfbd8f454df896fbec21bb287c2ca1

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