a536dc562efda7c51558e7a3cbaca99eeb09a1edf67384f68e4c8c6b9a28b48f

Analysis

max time kernel
120s
max time network
125s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
13/02/2024, 04:27

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General

Target

a536dc562efda7c51558e7a3cbaca99eeb09a1edf67384f68e4c8c6b9a28b48f.unknown
Size

39KB
MD5

d9f65de3476b4097e61d0897a9f8b217
SHA1

1048075dbff90f545a5d2ac5609a9481aafca405
SHA256

a536dc562efda7c51558e7a3cbaca99eeb09a1edf67384f68e4c8c6b9a28b48f
SHA512

d27e509b1745ad4fc1c6c51757b5dd5ef88aebfc071dc0fb5152885dec834cfc550b7f072027c8b84810b401184e44e0e26fef1a05e810ba3b280c1e4b0531d1
SSDEEP

768:4pbdPh9fqQaNWTqu9j8eTKHyfbBvfy8MQGNiZIqecbIDPKj9mV:4FT9fqsTL+hSlX4NkIqeB

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-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\.unknown	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\.unknown\ = "unknown_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\unknown_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\unknown_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\unknown_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\unknown_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\unknown_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\unknown_auto_file	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2804	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2804	AcroRd32.exe
2804	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1732 wrote to memory of 2908	1732	cmd.exe	29
PID 1732 wrote to memory of 2908	1732	cmd.exe	29
PID 1732 wrote to memory of 2908	1732	cmd.exe	29
PID 2908 wrote to memory of 2804	2908	rundll32.exe	30
PID 2908 wrote to memory of 2804	2908	rundll32.exe	30
PID 2908 wrote to memory of 2804	2908	rundll32.exe	30
PID 2908 wrote to memory of 2804	2908	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\a536dc562efda7c51558e7a3cbaca99eeb09a1edf67384f68e4c8c6b9a28b48f.unknown
1⤵
- Suspicious use of WriteProcessMemory
PID:1732
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\a536dc562efda7c51558e7a3cbaca99eeb09a1edf67384f68e4c8c6b9a28b48f.unknown
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2908
- - 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\a536dc562efda7c51558e7a3cbaca99eeb09a1edf67384f68e4c8c6b9a28b48f.unknown"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2804

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
b1700c295640160399d66c203806c514

SHA1
2d28b4f2add2fa3758d35f46be6a522e706c12b2

SHA256
89d78d9cba1d9ed75112218d0504329ee908b8510f99bd597c2046ca975b4b97

SHA512
42f740d33c31bb7ac163c338aa10daf4e8989d6de61b2899dac78926e210a6850a83d19709a35b0a001426118ecaf49e81539b1d0915fb3317582d38bb3bfed3

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