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
121s
max time network
123s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
25-03-2024 20:38

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General

Target

Prefetch/AI.EXE-517C04F0.pf
Size

28KB
MD5

48704e3bff5db60331525be92135d6a8
SHA1

efc6f2b467fc940a59b420a91eb86ec46cb5c70c
SHA256

c449ccaa312180e7735033bac08ce0d734d0a17a3800aa7935682cb88cbb8019
SHA512

0671853f282cb9715c7117cebd57c4a1ca610877ead88d9282217c92fe9e06c0bbe6df349a608caeeeb1a8c3b22800ef15d45852c6555972c55d83f0d5655563
SSDEEP

384:3VHrcINf7RJ29V/GWl7MrdYmzO8Uz7l6npES7ULn68XZwk8oqYgBLNo57D6iTO21:1rffEuvYgu7Ym1Wo1gBLOD6mLX4GIA

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\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\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\Local Settings	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	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\pf_auto_file\	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2664	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2664	AcroRd32.exe
2664	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2852 wrote to memory of 2540	2852	cmd.exe	29
PID 2852 wrote to memory of 2540	2852	cmd.exe	29
PID 2852 wrote to memory of 2540	2852	cmd.exe	29
PID 2540 wrote to memory of 2664	2540	rundll32.exe	30
PID 2540 wrote to memory of 2664	2540	rundll32.exe	30
PID 2540 wrote to memory of 2664	2540	rundll32.exe	30
PID 2540 wrote to memory of 2664	2540	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Prefetch\AI.EXE-517C04F0.pf
1⤵
- Suspicious use of WriteProcessMemory
PID:2852
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Prefetch\AI.EXE-517C04F0.pf
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2540
- - 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\AI.EXE-517C04F0.pf"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2664

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
8914475b3754ee9aaae752e750c59cc8

SHA1
ee6efe4782691d61ca9b98d2ee907abf2a2a8f33

SHA256
9a7452b4458c2271cf297f6b11341eafa97d5f0ff44f24b70a97a69003304a32

SHA512
ecdc03761230f29136e6767a65050a70d23ee0875cdbfcdd3a03b540b4df20ce600e52e91830e4e1fe1238443c32bdb5544bd7fc85a9030c249ed86e0f62f4da

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