Overview

overview

10

Static

static

8eff657dec...5b.exe

windows7_x64

10

8eff657dec...5b.exe

windows10_x64

10

Analysis

  • max time kernel
    40s
  • max time network
    57s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    18-05-2021 00:16

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General

  • Target

    8eff657dece49c6dd06996f187f87ad148e03a08eb81644f921a55ba1964b15b.exe

  • Size

    204KB

  • MD5

    fdb244e27c756dce5b4ad142c90c488b

  • SHA1

    d72037d651f655cc68cb038b85fe366d36efbba0

  • SHA256

    8eff657dece49c6dd06996f187f87ad148e03a08eb81644f921a55ba1964b15b

  • SHA512

    93b5a37c89ed87973241d205a36f8b08a42b292bdf18523de2e2234145f413b46e2cf8c9282613fe6586a44989fc0862f59bf1a4e06630d97c913f1594db816d

Score
10/10
gandcrabbackdoorpersistenceransomware

Malware Config

Signatures

  • GandCrab Payload 1 IoCs
  • Gandcrab

    Gandcrab is a Trojan horse that encrypts files on a computer.

    ransomwarebackdoorgandcrab
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Enumerates connected drives 3 TTPs 24 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 18 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookAW 64 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8eff657dece49c6dd06996f187f87ad148e03a08eb81644f921a55ba1964b15b.exe
    "C:\Users\Admin\AppData\Local\Temp\8eff657dece49c6dd06996f187f87ad148e03a08eb81644f921a55ba1964b15b.exe"
    1⤵
    • Adds Run key to start application
    • Enumerates connected drives
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookAW
    • Suspicious use of WriteProcessMemory
    PID:488
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:2676
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 488 -s 1232
        2⤵
        • Program crash
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3356

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Privilege Escalation

    Defense Evasion

    Modify Registry

    1
    T1112

    Credential Access

    Discovery

    Query Registry

    2
    T1012

    Peripheral Device Discovery

    1
    T1120

    System Information Discovery

    2
    T1082

    Lateral Movement

    Collection

    Exfiltration

    Command and Control

    Impact

    Replay Monitor

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    Downloads

    • memory/488-115-0x0000000000400000-0x00000000005A0000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/488-116-0x0000000002600000-0x0000000002617000-memory.dmp
      Filesize

      92KB

      Download
    • memory/2676-114-0x0000000000000000-mapping.dmp
      Download