841a98464457d2fceff8a35e6b575b1e5e0681f7232cb3c2b94c698e38960a25

Resubmissions

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
19s
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/WINLOGON.EXE-DEDDC9B6.pf
Size

6KB
MD5

f4dd6c691b7684c4c9c1f133e6244999
SHA1

cf15c40a957bc1c3a25cdeadd09c78d119c0eeba
SHA256

d3a4ad8ed5518ab5b7c93aeda63726074b9d9a649a188bc6c6dd980bc6f34736
SHA512

f4c0d19ab26e8321f777cd9af2e50e06949dd55a29179f996ea144594cf03cfd42c4e240af72938718d8f01663ab647596eac4b115d0d8e51281729a23ac7858
SSDEEP

192:ae3BMw1BU/TM+ONE9WIoOKw2Xl4NSOESMfIK9:a4MmU/Q+ONkaOK7sESMfIK9

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_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000_CLASSES\pf_auto_file\shell\Read\command	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
Key created	\REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000_CLASSES\.pf	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	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2816	AcroRd32.exe
2816	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2360 wrote to memory of 2708	2360	cmd.exe	29
PID 2360 wrote to memory of 2708	2360	cmd.exe	29
PID 2360 wrote to memory of 2708	2360	cmd.exe	29
PID 2708 wrote to memory of 2816	2708	rundll32.exe	30
PID 2708 wrote to memory of 2816	2708	rundll32.exe	30
PID 2708 wrote to memory of 2816	2708	rundll32.exe	30
PID 2708 wrote to memory of 2816	2708	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Prefetch\WINLOGON.EXE-DEDDC9B6.pf
1⤵
- Suspicious use of WriteProcessMemory
PID:2360
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Prefetch\WINLOGON.EXE-DEDDC9B6.pf
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2708
- - 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\WINLOGON.EXE-DEDDC9B6.pf"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:2816

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
386abb31443c9482d22d1fb1b0d9ea6a

SHA1
aad120971262391bb43d4e987a7c66e2864b6497

SHA256
02f99410577517dea355feb6f432d5f29df7f04352eb1693b3d2b1f49b567334

SHA512
6580f849f7bb81c27f68b597e1a7efb5f07555e84e147f817faef4b959c7a81fd47ea9daba9f0de2186c0fceb8f2b16bb9b610fe7434dd6c5c4e36d006f31c6f

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