92f4be23fd098350031cbe2f661f90c7377d691eec91808636d415b9741b029a

Analysis

max time kernel
150s
max time network
49s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
01-02-2023 16:59

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General

Target

NitroxServer-Subnautica.pdb
Size

23KB
MD5

ae86e9d9514d172b7b3c3c80af0070eb
SHA1

4a29947108b50765661bd36a28ec8bbfb7ecf6d9
SHA256

457a4d72f7c9a892d0f536c391a9ebaff707b3d8444a1658e51fcddd7f042c8b
SHA512

ca5571fe234e1e3d3ed156e71ed3a540453371ef94b2ecdb24aa410dce7bb36a997e9b54ff67564099fa8b5ed10cd1b0e8418bdff621f01bd1b8bac2aab48d86
SSDEEP

384:tNdoBXAbcSSPmp5y9/oHGApbcFm5RxCV+xk51vC6T1ts5hGxkMeXa3WQsUdP1dML:ulSSPmpI3IhGCyDsUdtohpUHNW

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-1-5-21-4063495947-34355257-727531523-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\pdb_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\pdb_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\pdb_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\pdb_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\.pdb	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\.pdb\ = "pdb_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\pdb_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\pdb_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1900	AcroRd32.exe
1900	AcroRd32.exe
1900	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1484 wrote to memory of 1552	1484	cmd.exe	28
PID 1484 wrote to memory of 1552	1484	cmd.exe	28
PID 1484 wrote to memory of 1552	1484	cmd.exe	28
PID 1552 wrote to memory of 1900	1552	rundll32.exe	29
PID 1552 wrote to memory of 1900	1552	rundll32.exe	29
PID 1552 wrote to memory of 1900	1552	rundll32.exe	29
PID 1552 wrote to memory of 1900	1552	rundll32.exe	29

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\NitroxServer-Subnautica.pdb
1⤵
- Suspicious use of WriteProcessMemory
PID:1484
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\NitroxServer-Subnautica.pdb
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1552
- - 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\NitroxServer-Subnautica.pdb"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:1900

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/1484-54-0x000007FEFC5A1000-0x000007FEFC5A3000-memory.dmp

Filesize
8KB

Download
memory/1900-82-0x0000000076BA1000-0x0000000076BA3000-memory.dmp

Filesize
8KB

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