58b5c71cb21b0c9327216aff93feed72365921d396e21eab0f2413a84fdd833f

Analysis

max time kernel
150s
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

Init.class
Size

3KB
MD5

60a0537e39c3d6901e00fd2451e21b13
SHA1

58030b5f51de97bb34952ebd790d495b6074227b
SHA256

3774dce7af235df226c246943454710dce133b1f714f0be055f16754163e57fd
SHA512

eff4f7bd0ff85e79282ad994fbdb14e3e2551c363ca47e811acb73e7aaf49575ef06eb15fecd1acea340565427080959e6412e826ac5ea6500a16d0fdf86b71a

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-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\class_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\.class\ = "class_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\class_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\class_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\class_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_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-1-5-21-2292972927-2705560509-2768824231-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\class_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\.class	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1348	AcroRd32.exe
1348	AcroRd32.exe
1348	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 340 wrote to memory of 1664	340	cmd.exe	28
PID 340 wrote to memory of 1664	340	cmd.exe	28
PID 340 wrote to memory of 1664	340	cmd.exe	28
PID 1664 wrote to memory of 1348	1664	rundll32.exe	30
PID 1664 wrote to memory of 1348	1664	rundll32.exe	30
PID 1664 wrote to memory of 1348	1664	rundll32.exe	30
PID 1664 wrote to memory of 1348	1664	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Init.class
1⤵
- Suspicious use of WriteProcessMemory
PID:340
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Init.class
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1664
- - 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\Init.class"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:1348

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/340-54-0x000007FEFB6A1000-0x000007FEFB6A3000-memory.dmp

Filesize
8KB

Download
memory/1348-82-0x0000000075771000-0x0000000075773000-memory.dmp

Filesize
8KB

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