841a98464457d2fceff8a35e6b575b1e5e0681f7232cb3c2b94c698e38960a25

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25/03/2024, 21:05

240325-zxdnnahe48 3

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25/03/2024, 20:38

25/03/2024, 20:36

Analysis

max time kernel
117s
max time network
124s
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-EBDB10CE.pf
Size

37KB
MD5

75a1d8ebe0e3867b4db922178aea875b
SHA1

dae592de043c8097d0acf9d0b093167f0ceabefd
SHA256

2aa02a0c3e8df29cd63fabd67ac0485e714905283a87c913693a700f0146d479
SHA512

d6b3efcaa56e742dd72cea39a9946f345af33df87932ec9e0581b985a1ba3b2b66442112bbf97eeaf2e7cb0243b3e917c3036e617d8612ebee890aeec3b2d282
SSDEEP

768:v3rG2ubVYScxo8XPDmLEnovaE2/s5XGcoWFUHEavuR2Ie7Bd:v7G2uMbmLGAGcBmqPe9d

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
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\.pf\ = "pf_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pf_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_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-1-5-21-330940541-141609230-1670313778-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pf_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pf_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\.pf	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pf_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pf_auto_file\shell	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2440	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2440	AcroRd32.exe
2440	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2600 wrote to memory of 2420	2600	cmd.exe	29
PID 2600 wrote to memory of 2420	2600	cmd.exe	29
PID 2600 wrote to memory of 2420	2600	cmd.exe	29
PID 2420 wrote to memory of 2440	2420	rundll32.exe	30
PID 2420 wrote to memory of 2440	2420	rundll32.exe	30
PID 2420 wrote to memory of 2440	2420	rundll32.exe	30
PID 2420 wrote to memory of 2440	2420	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Prefetch\APPINSTALLER.EXE-EBDB10CE.pf
1⤵
- Suspicious use of WriteProcessMemory
PID:2600
- 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-EBDB10CE.pf
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2420
- - 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-EBDB10CE.pf"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2440

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
c1304cf3bf054e6ee900a4999e1cdf98

SHA1
01e799e6ea780505fa32cf6649263fc87c457f23

SHA256
61a51f750352096487a52abab627081e3e855426e8316c31e52308c6c4e0d5b9

SHA512
08024c960cfb4597d7a8e79ea3c9bcbacedc9a7f576d86a44476a00eb7fbdbf8b7a74439bd27ab69caf1f75e7cd9c3dcfdf61c6ba0c505408dcf4e5c8161aa70

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