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

25/03/2024, 20:38

25/03/2024, 20:36

Analysis

max time kernel
121s
max time network
126s
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/APPINSTALLER.EXE-8BEA83E8.pf
Size

38KB
MD5

df84c3f2fe4e8b96c7927506d17b48d4
SHA1

a6ac95aed8052661107b79601da2064647b085df
SHA256

af2fdcccd50d1a2a6ac78da31735f63f49e688744c77c5e9285b180f2a9b3c8a
SHA512

3342512c15b1a316528cf03868aefcc6c14f4632beef4ec41ce4a2ca612485f115d33c36a9b36a46c29ab1991e299698e95059e1bf19b4a8829d20db680ea684
SSDEEP

768:J52q+OuuhkKtRzDsC4/1KAJHN1F+BuF12vqyo1Q9jbUvy:JM8lHkKOHYEF1oqyJBz

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-1-5-21-1658372521-4246568289-2509113762-1000_CLASSES\.pf	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000_CLASSES\pf_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000_CLASSES\pf_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000_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-1-5-21-1658372521-4246568289-2509113762-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000_CLASSES\pf_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000_CLASSES\pf_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000_CLASSES\.pf\ = "pf_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000_CLASSES\pf_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2680	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2680	AcroRd32.exe
2680	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 920 wrote to memory of 2108	920	cmd.exe	29
PID 920 wrote to memory of 2108	920	cmd.exe	29
PID 920 wrote to memory of 2108	920	cmd.exe	29
PID 2108 wrote to memory of 2680	2108	rundll32.exe	30
PID 2108 wrote to memory of 2680	2108	rundll32.exe	30
PID 2108 wrote to memory of 2680	2108	rundll32.exe	30
PID 2108 wrote to memory of 2680	2108	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Prefetch\APPINSTALLER.EXE-8BEA83E8.pf
1⤵
- Suspicious use of WriteProcessMemory
PID:920
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Prefetch\APPINSTALLER.EXE-8BEA83E8.pf
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2108
- - 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\APPINSTALLER.EXE-8BEA83E8.pf"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2680

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
3ff7a387dd5a3b806888e4d85655392b

SHA1
3a6ada8ce7e1d36989228e93c8a971f26004590b

SHA256
f33b1787cb719f797008cffb4896d1c2a8a1f1c4e809850e6ad7c27d6a4d3b3b

SHA512
1c37104ae5cc7cc180de45db64821e40e47a9919105f7d2f1406f075f303b69f708856246520dcc8096623731ec9932f424149c52d13646fe64d56d9734a0757

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