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

25/03/2024, 20:38

25/03/2024, 20:36

Analysis

max time kernel
18s
max time network
16s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
25/03/2024, 20:56

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General

Target

Prefetch/WINDOWS.MEDIA.BACKGROUNDPLAYB-C5865726.pf
Size

4KB
MD5

a21c2ab265ab1ba1f04dd0ad3f32cb01
SHA1

009a1e735b9a09907e0b2b3616913026b63a5068
SHA256

6afb0b673804d4c136fafbd8cc32e4b7e020eb306f590a526f7b959d4d0dc00c
SHA512

10388c99db9b7eae36efe0bc366832df3403238e378a81947277318bf96d58aa0ebfea631b4335b3fd60c9609fa3b160ef9881b847cd34bc07a15c2f4ab7c242
SSDEEP

96:ksQ7FD9LCCaJphxkUNDg7heScdk2DnXc1VpqyVzFc:BQ7FJLPSiU5K8dk2DXszqT

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-1-5-21-1298544033-3225604241-2703760938-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\pf_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\.pf\ = "pf_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\pf_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\pf_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_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-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\pf_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\.pf	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\pf_auto_file\shell\Read	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2856	AcroRd32.exe
2856	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1032 wrote to memory of 2828	1032	cmd.exe	29
PID 1032 wrote to memory of 2828	1032	cmd.exe	29
PID 1032 wrote to memory of 2828	1032	cmd.exe	29
PID 2828 wrote to memory of 2856	2828	rundll32.exe	30
PID 2828 wrote to memory of 2856	2828	rundll32.exe	30
PID 2828 wrote to memory of 2856	2828	rundll32.exe	30
PID 2828 wrote to memory of 2856	2828	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Prefetch\WINDOWS.MEDIA.BACKGROUNDPLAYB-C5865726.pf
1⤵
- Suspicious use of WriteProcessMemory
PID:1032
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Prefetch\WINDOWS.MEDIA.BACKGROUNDPLAYB-C5865726.pf
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2828
- - 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\WINDOWS.MEDIA.BACKGROUNDPLAYB-C5865726.pf"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:2856

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
a5b88f1435827a778750f543f6f76f63

SHA1
8c2cbf5192ab02e5f41f30b438c870766c963d46

SHA256
4cabec23e7f2d35f20136c1fc5f805dba77a4de060e8bc405e3aec77a3ffdda0

SHA512
4a2e445b54dfdfbe35b3341ad49436c7cd79c3b4e05d27a19c95b5b95c3c0b10bcebf6590eb315a27d3b76332606e90fee5d3f5db80599a6272d53b3b9f12deb

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