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
20s
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, 20:59

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General

Target

Prefetch/UNINSTALLFB.EXE-E48BF053.pf
Size

8KB
MD5

d58a85d08b18d5c944d94fc12a8f1166
SHA1

bbad8a9d2c304cb87cd24ba24e7f0fda9d3fb73c
SHA256

1bb6ef8d55cfdf51b0b30c4b782ff9c201031aa71c487a8b5573a2d19dc1d654
SHA512

3a9f8c19ac18e05ea2e08aa03bb3ea62cd63cae02a716cf92e554f489912d735659b2d8fb5bda82c7845e7f028e111f7188ad27566ea5370e7c26a16a0742d95
SSDEEP

192:0hZOR8BqCXYZm92tD5nuvZAe9EU6zqw/a/39U28qBL/eE:0XdBqCIZAEuCesNy/9UeBLz

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_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\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\ = "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 use of SetWindowsHookEx 2 IoCs

pid	Process
2640	AcroRd32.exe
2640	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1736 wrote to memory of 2148	1736	cmd.exe	29
PID 1736 wrote to memory of 2148	1736	cmd.exe	29
PID 1736 wrote to memory of 2148	1736	cmd.exe	29
PID 2148 wrote to memory of 2640	2148	rundll32.exe	30
PID 2148 wrote to memory of 2640	2148	rundll32.exe	30
PID 2148 wrote to memory of 2640	2148	rundll32.exe	30
PID 2148 wrote to memory of 2640	2148	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Prefetch\UNINSTALLFB.EXE-E48BF053.pf
1⤵
- Suspicious use of WriteProcessMemory
PID:1736
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Prefetch\UNINSTALLFB.EXE-E48BF053.pf
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2148
- - 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\UNINSTALLFB.EXE-E48BF053.pf"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:2640

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
b7d258f5c8a4eced6951eea94193038d

SHA1
e7f5355fedcefa65f6a3091df72f3aefd3b2e32e

SHA256
0dadaa95c3570c0560f6cdee506bd88c3164f32c0c6ca522355f70bd16d19ea3

SHA512
f26da8a4868263ab2cf86ca89a521e6892349cd30a64f52807eb1e5177df007db9235baa9b78dc041e2a09265d5642cfde61820890f795623d4560759c32ee50

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