58b5c71cb21b0c9327216aff93feed72365921d396e21eab0f2413a84fdd833f

Analysis

max time kernel
153s
max time network
46s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
01/10/2022, 23:22

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General

Target

W2.class
Size

1KB
MD5

e40b8d05f6e1e9e57684b01490d1f4ee
SHA1

0395eae73e69dac859ecd926b5c161a75485f47f
SHA256

41827aee32c20dd33d8261e0ada594c1dbe8f9976dc7e60f215061eb15e2d990
SHA512

ef60f09065bb33ae26c0ce557b42da90a6d3b6af45eba2892672cf2b6e60c7b58f7b513d474d16d66778cedb89f8274357a08548368c0a3754a21422a022ae5f

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-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\class_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.class\ = "class_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\class_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.class	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\class_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\class_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\class_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\class_auto_file\	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1092	AcroRd32.exe
1092	AcroRd32.exe
1092	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1196 wrote to memory of 892	1196	cmd.exe	28
PID 1196 wrote to memory of 892	1196	cmd.exe	28
PID 1196 wrote to memory of 892	1196	cmd.exe	28
PID 892 wrote to memory of 1092	892	rundll32.exe	30
PID 892 wrote to memory of 1092	892	rundll32.exe	30
PID 892 wrote to memory of 1092	892	rundll32.exe	30
PID 892 wrote to memory of 1092	892	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\W2.class
1⤵
- Suspicious use of WriteProcessMemory
PID:1196
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\W2.class
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:892
- - 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\W2.class"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:1092

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/1092-82-0x0000000075CF1000-0x0000000075CF3000-memory.dmp

Filesize
8KB

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memory/1196-54-0x000007FEFC511000-0x000007FEFC513000-memory.dmp

Filesize
8KB

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