Analysis

  • max time kernel
    118s
  • max time network
    126s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    09/01/2022, 20:21

General

  • Target
    E11E2425C62F34EBB3F640BAEEFB67D5.exe.dll
  • Size 105.8MB
  • Sample220109-y5cwnaeadr
  • SHA256 237deba138355bfb448e74bfb68fc868f4807b24d68715a6d47e348fc0cf9257
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • GoldDragon

    GoldDragon is a second-stage backdoor attributed to Kimsuky.

  • GoldDragon 2021 Stage2 infostealer 3 IoCs

    Detect GoldDragon InfoStealer Stage 2.

  • 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
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates processes with tasklist 1 TTPs 1 IoCs
  • Gathers network information 2 TTPs 1 IoCs

    Uses commandline utility to view network configuration.

  • Gathers system information 1 TTPs 1 IoCs

    Runs systeminfo.exe.

  • Kills process with taskkill 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 49 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\E11E2425C62F34EBB3F640BAEEFB67D5.exe.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1916
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\E11E2425C62F34EBB3F640BAEEFB67D5.exe.dll,#1
      2⤵
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:1180
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c taskkill /f /im daumcleaner.exe
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:544
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /f /im daumcleaner.exe
          4⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:784
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c ipconfig/all >>"C:\Users\Admin\AppData\Roaming\OneDriver\out\PI_001.dat" & arp -a >>"C:\Users\Admin\AppData\Roaming\OneDriver\out\PI_001.dat"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1116
        • C:\Windows\SysWOW64\ipconfig.exe
          ipconfig /all
          4⤵
          • Gathers network information
          PID:1552
        • C:\Windows\SysWOW64\ARP.EXE
          arp -a
          4⤵
            PID:1208
        • C:\Windows\SysWOW64\cmd.exe
          cmd.exe /c systeminfo >>"C:\Users\Admin\AppData\Roaming\OneDriver\out\PI_001.dat"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:1216
          • C:\Windows\SysWOW64\systeminfo.exe
            systeminfo
            4⤵
            • Gathers system information
            PID:1512
        • C:\Windows\SysWOW64\cmd.exe
          cmd.exe /c tasklist >>"C:\Users\Admin\AppData\Roaming\OneDriver\out\PI_001.dat"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:1700
          • C:\Windows\SysWOW64\tasklist.exe
            tasklist
            4⤵
            • Enumerates processes with tasklist
            • Suspicious use of AdjustPrivilegeToken
            PID:360
        • C:\Windows\SysWOW64\svchost.exe
          "C:\Windows\system32\svchost.exe"
          3⤵
          • Suspicious behavior: GetForegroundWindowSpam
          PID:700

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          memory/700-72-0x00000000000D0000-0x0000000000129000-memory.dmp

          memory/700-69-0x00000000000D0000-0x0000000000129000-memory.dmp

          memory/700-68-0x00000000000D0000-0x0000000000129000-memory.dmp

          memory/1180-55-0x0000000075F21000-0x0000000075F23000-memory.dmp