841a98464457d2fceff8a35e6b575b1e5e0681f7232cb3c2b94c698e38960a25

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25-03-2024 21:05

240325-zxdnnahe48 3

25-03-2024 20:59

25-03-2024 20:56

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Analysis

max time kernel
18s
max time network
16s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
25-03-2024 20:59

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General

Target

Prefetch/UN_A.EXE-0C2A88E9.pf
Size

19KB
MD5

2796527d29406ba7d0fe986df89c6f12
SHA1

a67149de5ddcbcf0ae1877fdcd099902bdb0ffb5
SHA256

de53ff8a64f9ca6dcefa8ff3372d86a06fe0ec403a4cbd383753044c22b5a3f9
SHA512

5a016c98b572ace0302d9b68234a93b8cd67533851907e063384dd91a34175b1a85c09b1fe3f6fffb128500d48bd776900014fa0033047a1213245ada24186e9
SSDEEP

384:Jl3pv3F9jXdPJ27GJk035JugH545xUnyGmmji4VOiC9kL9j8CQXtJ:Jl79jXLEg37HebfKji469m4/

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-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\.pf	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\.pf\ = "pf_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\pf_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\pf_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_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-1-5-21-3627615824-4061627003-3019543961-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\pf_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\pf_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\pf_auto_file\shell\Read	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1420	AcroRd32.exe
1420	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1108 wrote to memory of 2672	1108	cmd.exe	29
PID 1108 wrote to memory of 2672	1108	cmd.exe	29
PID 1108 wrote to memory of 2672	1108	cmd.exe	29
PID 2672 wrote to memory of 1420	2672	rundll32.exe	30
PID 2672 wrote to memory of 1420	2672	rundll32.exe	30
PID 2672 wrote to memory of 1420	2672	rundll32.exe	30
PID 2672 wrote to memory of 1420	2672	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Prefetch\UN_A.EXE-0C2A88E9.pf
1⤵
- Suspicious use of WriteProcessMemory
PID:1108
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Prefetch\UN_A.EXE-0C2A88E9.pf
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2672
- - 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\UN_A.EXE-0C2A88E9.pf"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:1420

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
4b25cd22f9a5d67078c199b712192552

SHA1
123f0a2b153c9d15a4878aa29e929c6b3e97b078

SHA256
041cd3ff7b443bbf782bde3996fe120c6d97f884c4d4af157ab0758cf0cd8bba

SHA512
5b349eacd9a919cf609c0df57a750990beb338bd1930b16cf93546db99b28d73815cf0f6b460d7f096cded5568f737954550a1b382dd6b5deba859f794788e1b

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