Analysis

  • max time kernel
    117s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    04-03-2024 02:09

General

  • Target

    b0f5de53b7131c8486445c880a3efcab.exe

  • Size

    61KB

  • MD5

    b0f5de53b7131c8486445c880a3efcab

  • SHA1

    c4bccf5722cda8d75254827715ce33259218cdf4

  • SHA256

    beaddc303ac98868c299807322cfda81ef519ecf452444393c5478a04e0cb38f

  • SHA512

    3449ae984fc408b404f712df597bb6b4104e100df974d6ebb59f4eb91b59934696cce2ecbf61a6a79057293886916d463017dc5de60ea93579b86b105f20ba94

  • SSDEEP

    768:gKsMqCXfVcWTjM9ZkiANIUZ0hYLDwUzc80gmq3oP/oDX:gKsenM9ZkiAPZBr/0O8/oL

Malware Config

Signatures

  • Nitro

    A ransomware that demands Discord nitro gift codes to decrypt files.

  • Renames multiple (89) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops desktop.ini file(s) 3 IoCs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Sets desktop wallpaper using registry 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 41 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b0f5de53b7131c8486445c880a3efcab.exe
    "C:\Users\Admin\AppData\Local\Temp\b0f5de53b7131c8486445c880a3efcab.exe"
    1⤵
    • Adds Run key to start application
    • Drops desktop.ini file(s)
    • Sets desktop wallpaper using registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1624
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:928
      • C:\Windows\SysWOW64\Wbem\WMIC.exe
        wmic csproduct get uuid
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2932

Network

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Modify Registry

2
T1112

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Collection

Data from Local System

1
T1005

Impact

Defacement

1
T1491

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1624-0-0x00000000008B0000-0x00000000008C6000-memory.dmp
    Filesize

    88KB

  • memory/1624-1-0x0000000074A30000-0x000000007511E000-memory.dmp
    Filesize

    6.9MB

  • memory/1624-2-0x0000000002000000-0x0000000002040000-memory.dmp
    Filesize

    256KB

  • memory/1624-29-0x0000000074A30000-0x000000007511E000-memory.dmp
    Filesize

    6.9MB

  • memory/1624-33-0x0000000002000000-0x0000000002040000-memory.dmp
    Filesize

    256KB

  • memory/1624-97-0x0000000002000000-0x0000000002040000-memory.dmp
    Filesize

    256KB

  • memory/1624-98-0x0000000002000000-0x0000000002040000-memory.dmp
    Filesize

    256KB