Analysis

  • max time kernel
    90s
  • max time network
    49s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    25-09-2022 04:33

General

  • Target

    HEUR-Trojan-Ransom.Win32.Generic-54b1bae540a9329522f51dac880b4970103a048a2ee96f94832acc6834c67848.exe

  • Size

    61KB

  • MD5

    057415ae7e4e625de07e3846d132f418

  • SHA1

    fc3a8e4e103511fdc362a98a42bccec04021feaf

  • SHA256

    54b1bae540a9329522f51dac880b4970103a048a2ee96f94832acc6834c67848

  • SHA512

    6d474545cbc6621163afd224826d74b7b8adff4c5caefd782b2161509cad08a2d93206f5c99d7c3e7c087d650617900ee88222be1ae3fa0c5f1de6da36a5de56

  • SSDEEP

    768:QKsMqCXfVcWlQM9ZkiANIULkYLDwUzc80gmq3oP/oDF:QKseSM9ZkiAPJr/0O8/oh

Malware Config

Signatures

  • Nitro

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

  • Modifies extensions of user files 5 IoCs

    Ransomware generally changes the extension on encrypted files.

  • 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\HEUR-Trojan-Ransom.Win32.Generic-54b1bae540a9329522f51dac880b4970103a048a2ee96f94832acc6834c67848.exe
    "C:\Users\Admin\AppData\Local\Temp\HEUR-Trojan-Ransom.Win32.Generic-54b1bae540a9329522f51dac880b4970103a048a2ee96f94832acc6834c67848.exe"
    1⤵
    • Modifies extensions of user files
    • 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:1200
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1068
      • C:\Windows\SysWOW64\Wbem\WMIC.exe
        wmic csproduct get uuid
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1476

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

2
T1112

Credential Access

Credentials in Files

1
T1081

Collection

Data from Local System

1
T1005

Impact

Defacement

1
T1491

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1068-56-0x0000000000000000-mapping.dmp
  • memory/1200-54-0x0000000000D50000-0x0000000000D66000-memory.dmp
    Filesize

    88KB

  • memory/1200-55-0x0000000075AC1000-0x0000000075AC3000-memory.dmp
    Filesize

    8KB

  • memory/1200-58-0x00000000045F5000-0x0000000004606000-memory.dmp
    Filesize

    68KB

  • memory/1200-59-0x00000000045F5000-0x0000000004606000-memory.dmp
    Filesize

    68KB

  • memory/1476-57-0x0000000000000000-mapping.dmp