Analysis

  • max time kernel
    118s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    16-03-2024 08:23

General

  • Target

    cd92652e488f7b34b06243001708634a.exe

  • Size

    61KB

  • MD5

    cd92652e488f7b34b06243001708634a

  • SHA1

    fb5f3022b802b589fd406676bed5b54b9089d4e9

  • SHA256

    42af7f7d66dfbbe25f515cdc5eeb118e30849f343c0f69b673c4aebd30f6fd56

  • SHA512

    7e94f40b6f0d0e14efeafe7abfabe90a7d0a3c0e3d1a05764930f3babf5a8544a57e3339877f861fda175fb7246a8e725a4acfd3d6800aa99890dda543186d0a

  • SSDEEP

    768:OJ+uiBAYleAF7LDwUzc8Ugmq3oP/oD7buBApANI4n2yV:OJfAF7r/UO8/oX6QAx5

Malware Config

Signatures

  • Nitro

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

  • Renames multiple (67) 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\cd92652e488f7b34b06243001708634a.exe
    "C:\Users\Admin\AppData\Local\Temp\cd92652e488f7b34b06243001708634a.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:2968
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2996
      • C:\Windows\SysWOW64\Wbem\WMIC.exe
        wmic csproduct get uuid
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2848

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/2968-0-0x0000000000FF0000-0x0000000001006000-memory.dmp
    Filesize

    88KB

  • memory/2968-1-0x0000000074230000-0x000000007491E000-memory.dmp
    Filesize

    6.9MB

  • memory/2968-2-0x0000000000EB0000-0x0000000000EF0000-memory.dmp
    Filesize

    256KB

  • memory/2968-64-0x0000000074230000-0x000000007491E000-memory.dmp
    Filesize

    6.9MB

  • memory/2968-74-0x0000000000EB0000-0x0000000000EF0000-memory.dmp
    Filesize

    256KB

  • memory/2968-75-0x0000000000EB0000-0x0000000000EF0000-memory.dmp
    Filesize

    256KB

  • memory/2968-76-0x0000000000EB0000-0x0000000000EF0000-memory.dmp
    Filesize

    256KB