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
122s
max time network
128s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
25-03-2024 20:38

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General

Target

Prefetch/AESM_SERVICE.EXE-85691CD5.pf
Size

8KB
MD5

3b714e130a2eb5a43b2aea4100fd0ef7
SHA1

9dc76d0ccace1b374651c86b008393e7c4ba359e
SHA256

028b64fd5c6d741b38be316243bc4789b565aaf46023316c085888816f74a907
SHA512

e4f2710c5f455e74dc220a40a180e26b982410bf5cc1d0f4038bea2f731b6089ff910b2de5fec3a49984ef6755aad19da01ccba92b3e450407b1b3ee949de10f
SSDEEP

192:z68oTB/DnoqV7aNOU7tm+kBBGk+enA9p6DBG8qUue9Kmgm:zETB7j2NO0tmck+e46tpqdehp

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-1-5-21-3787592910-3720486031-2929222812-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3787592910-3720486031-2929222812-1000_CLASSES\pf_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3787592910-3720486031-2929222812-1000_CLASSES\pf_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3787592910-3720486031-2929222812-1000_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-1-5-21-3787592910-3720486031-2929222812-1000_CLASSES\pf_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3787592910-3720486031-2929222812-1000_CLASSES\.pf	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3787592910-3720486031-2929222812-1000_CLASSES\.pf\ = "pf_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3787592910-3720486031-2929222812-1000_CLASSES\pf_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3787592910-3720486031-2929222812-1000_CLASSES\pf_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2568	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2568	AcroRd32.exe
2568	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2852 wrote to memory of 2628	2852	cmd.exe	29
PID 2852 wrote to memory of 2628	2852	cmd.exe	29
PID 2852 wrote to memory of 2628	2852	cmd.exe	29
PID 2628 wrote to memory of 2568	2628	rundll32.exe	30
PID 2628 wrote to memory of 2568	2628	rundll32.exe	30
PID 2628 wrote to memory of 2568	2628	rundll32.exe	30
PID 2628 wrote to memory of 2568	2628	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Prefetch\AESM_SERVICE.EXE-85691CD5.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\AESM_SERVICE.EXE-85691CD5.pf
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2628
- - 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\AESM_SERVICE.EXE-85691CD5.pf"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2568

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
011bcae974492721684fff42619b7053

SHA1
a1725af3e9d849c97310542616cf60985f915162

SHA256
fbca2202c463bc813d3809497e52eeaa8c88faae3d63a531c2c301792ba72aeb

SHA512
8a731a7a2657dbcd74895c7847f27d609b8e5062fd6d812b227668a15f16d6ee0f74e0d17856392e1804e6ca8a2480c7ac8aead34a38568b39cd4f614e0b936f

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