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
120s
max time network
127s
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/7ZG.EXE-F49B3D46.pf
Size

125KB
MD5

e56588be27637b9f67d109b888609768
SHA1

2de82ed6fad648f271b7f11238b8f47375033926
SHA256

5ec530673680a6fae90284d0d4349032619e8ad6c536022863c72288109aa2e2
SHA512

4f6f121c1b9fd86173338cf5ba3234377df6d09c162e7f7a73ff026ae45e1b6fc124dc5fde07bad5626629cd08999f72c8f5143486ec4a72b27d694f3b452648
SSDEEP

3072:GhxqkeuQIlzqFDd894koBaxf/vPC5ks8krKRlg2LNWbSLIknH0hCCCCcxhOAbPQh:AxqkmIlzqFDd894koBaxf/vPCis8krKM

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-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pf_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_Classes\Local Settings	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
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	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pf_auto_file\shell	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

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 1704 wrote to memory of 2580	1704	cmd.exe	29
PID 1704 wrote to memory of 2580	1704	cmd.exe	29
PID 1704 wrote to memory of 2580	1704	cmd.exe	29
PID 2580 wrote to memory of 2680	2580	rundll32.exe	30
PID 2580 wrote to memory of 2680	2580	rundll32.exe	30
PID 2580 wrote to memory of 2680	2580	rundll32.exe	30
PID 2580 wrote to memory of 2680	2580	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Prefetch\7ZG.EXE-F49B3D46.pf
1⤵
- Suspicious use of WriteProcessMemory
PID:1704
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Prefetch\7ZG.EXE-F49B3D46.pf
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2580
- - 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\7ZG.EXE-F49B3D46.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
d9395343261abdde8b2d9cdc3a75db3a

SHA1
c944cf02bf14d6dc3257dc9d25810f07e913ec94

SHA256
9349c375fe4554c4834ae69a942acbdc5940b1edf89bb948c5ac0552a4ac0857

SHA512
05b7db1d85d9ebff8696621e728c8b7b01ca8b9d358aa0ca35a09030aceeae0df414f5fbc0e998184562e57fb32c971cb2e07041e57c82b17a588faa0d26783b

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