721ff308a706259c674adbd7c1606f5d5636674dc372ab739f1224e0be06184a

Analysis

max time kernel
1800s
max time network
1612s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
15-02-2023 14:00

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General

Target

t/Smadav.dat
Size

153KB
MD5

98f963bae9fd59ab4d50d9e275471ec6
SHA1

95c7b1eda105bf690cce854b53b9a308f82fc525
SHA256

a59724904c4bf6bfbf182e0235ede0109b65649b5d9f95acdb627610820eba37
SHA512

da3311197834a90cebc3d25dd1056717ca7c7d68e30328280b091fdfa2a41598fd3f09854a15c5d0cec939f21b044bab96c8ea28ba53e6c280c945fb31c892ab
SSDEEP

3072:f0mx8ZZ7SipHMyQtjR7qQRStGNHHVzvkFtyqc/rx3PPy/gNOTWlBuZqAcT:cmx8HSipHMXdsQVNHuBcjJPPy/kAWMxc

Score

3^/10

Malware Config

Signatures

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies registry class 10 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\dat_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\.dat	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\dat_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\dat_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\.dat\ = "dat_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\dat_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\dat_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\dat_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
1008	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1008	AcroRd32.exe
1008	AcroRd32.exe
1008	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2016 wrote to memory of 1388	2016	cmd.exe	28
PID 2016 wrote to memory of 1388	2016	cmd.exe	28
PID 2016 wrote to memory of 1388	2016	cmd.exe	28
PID 1388 wrote to memory of 1008	1388	rundll32.exe	29
PID 1388 wrote to memory of 1008	1388	rundll32.exe	29
PID 1388 wrote to memory of 1008	1388	rundll32.exe	29
PID 1388 wrote to memory of 1008	1388	rundll32.exe	29

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\t\Smadav.dat
1⤵
- Suspicious use of WriteProcessMemory
PID:2016
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\t\Smadav.dat
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1388
- - 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\t\Smadav.dat"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:1008

Network

MITRE ATT&CK Enterprise v6

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

memory/1008-82-0x0000000075561000-0x0000000075563000-memory.dmp

Filesize
8KB

Download
memory/2016-54-0x000007FEFB8D1000-0x000007FEFB8D3000-memory.dmp

Filesize
8KB

Download