841a98464457d2fceff8a35e6b575b1e5e0681f7232cb3c2b94c698e38960a25

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25/03/2024, 21:05

240325-zxdnnahe48 3

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Analysis

max time kernel
18s
max time network
16s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
25/03/2024, 21:05

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General

Target

Prefetch/SVCHOST.EXE-C25134E6.pf
Size

30KB
MD5

9f8028d312b8e5c024a3a0dcfd9e4a4a
SHA1

017875beb678381d00642b31d8055e6f29d54106
SHA256

0645a6a19ab4b4c417a450a47880cc9818b63f1b838a5775a019ac6e202ccc14
SHA512

24d8bcb656b4d284fb0b83294222de1044f66ae7fa466f7668e048b335cd340be770ced889aa02a9ce1cbefa219eaa1dc6a8fd01241aed89e49e0ca2adc45e1e
SSDEEP

768:zUX/u4BokOLoC8wU18jAIGt7F4eh/BFUhVvzhyOf4F5mG5x:zUPuJcCE87cXmvFt85x

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-1-5-21-2721934792-624042501-2768869379-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\pf_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\pf_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\pf_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_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-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\.pf	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\.pf\ = "pf_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\pf_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\pf_auto_file\shell	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2736	AcroRd32.exe
2736	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1508 wrote to memory of 2576	1508	cmd.exe	29
PID 1508 wrote to memory of 2576	1508	cmd.exe	29
PID 1508 wrote to memory of 2576	1508	cmd.exe	29
PID 2576 wrote to memory of 2736	2576	rundll32.exe	30
PID 2576 wrote to memory of 2736	2576	rundll32.exe	30
PID 2576 wrote to memory of 2736	2576	rundll32.exe	30
PID 2576 wrote to memory of 2736	2576	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Prefetch\SVCHOST.EXE-C25134E6.pf
1⤵
- Suspicious use of WriteProcessMemory
PID:1508
- 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-C25134E6.pf
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2576
- - 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-C25134E6.pf"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:2736

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
87d9fd2751588ecbf71b7fe77046d9fe

SHA1
14b521b6ede2d274985c18f83298d4535150dac0

SHA256
af35cd51c5bb255bed2706c02f870ca0d47081ee0753a8794ab7ceeb30374102

SHA512
f6cd52ad9fc77929cb9a53b981bb0e144e4276233f18d79a82667a31ec5dc8ee4d2259a9ce881aabc03d99a72bf3033d0c2f1deb5503ee8377c734a2a7ca0a6b

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