Overview

overview

8

Static

static

winprofile

windows7_x64

8

winprofile

windows10_x64

8

Analysis

  • max time kernel
    299s
  • max time network
    183s
  • platform
    windows10_x64
  • resource
    win10-20220414-en
  • submitted
    05-07-2022 22:17

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General

  • Target

    239188ccb58064385d07c0f11ff848cbf605f040f51a06dc102e78f7b2b3d17a.exe

  • Size

    942KB

  • MD5

    a92015618b79adee683000eaaaa30c83

  • SHA1

    fd2c04199f3e58c13bd2876bf38702ba3f172f75

  • SHA256

    239188ccb58064385d07c0f11ff848cbf605f040f51a06dc102e78f7b2b3d17a

  • SHA512

    5a82b48b223b6aa518aca74e2b6342045436e483f3a82c57d1ba236b257ce1c80a826e345a0b600796a0164e55a2d286f5b2e0183ef0662b8e96e89d173faa65

Score
8/10
upx

Malware Config

Signatures

  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • UPX packed file 2 IoCs

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

    upx
  • Suspicious use of SetThreadContext 1 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 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\239188ccb58064385d07c0f11ff848cbf605f040f51a06dc102e78f7b2b3d17a.exe
    "C:\Users\Admin\AppData\Local\Temp\239188ccb58064385d07c0f11ff848cbf605f040f51a06dc102e78f7b2b3d17a.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2548
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp78AF.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2764
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:3632
      • C:\ProgramData\win32\BKIVNA.exe
        "C:\ProgramData\win32\BKIVNA.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3868
        • C:\Windows\System32\cmd.exe
          "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc MINUTE /mo 5 /RL HIGHEST /tn "BKIVNA" /tr "C:\ProgramData\win32\BKIVNA.exe"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:4220
          • C:\Windows\system32\schtasks.exe
            schtasks /create /f /sc MINUTE /mo 5 /RL HIGHEST /tn "BKIVNA" /tr "C:\ProgramData\win32\BKIVNA.exe"
            5⤵
            • Creates scheduled task(s)
            PID:4388
        • C:\Windows\explorer.exe
          C:\Windows\explorer.exe --algo ETHASH --pool eth.2miners.com:2020 --user 0xd3e33ee5d3c0be3da5f6a9516fd52bc9a877677b.RIGA_1
          4⤵
            PID:1508
    • C:\ProgramData\win32\BKIVNA.exe
      C:\ProgramData\win32\BKIVNA.exe
      1⤵
      • Executes dropped EXE
      PID:5000

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Scheduled Task

    1
    T1053

    Persistence

    Scheduled Task

    1
    T1053

    Privilege Escalation

    Scheduled Task

    1
    T1053

    Defense Evasion

    Credential Access

    Discovery

    System Information Discovery

    1
    T1082

    Lateral Movement

    Collection

    Exfiltration

    Command and Control

    Impact

    Replay Monitor

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    Downloads

    • C:\ProgramData\win32\BKIVNA.exe
      Filesize

      942KB

      MD5

      a92015618b79adee683000eaaaa30c83

      SHA1

      fd2c04199f3e58c13bd2876bf38702ba3f172f75

      SHA256

      239188ccb58064385d07c0f11ff848cbf605f040f51a06dc102e78f7b2b3d17a

      SHA512

      5a82b48b223b6aa518aca74e2b6342045436e483f3a82c57d1ba236b257ce1c80a826e345a0b600796a0164e55a2d286f5b2e0183ef0662b8e96e89d173faa65

      Download Submit
    • C:\ProgramData\win32\BKIVNA.exe
      Filesize

      942KB

      MD5

      a92015618b79adee683000eaaaa30c83

      SHA1

      fd2c04199f3e58c13bd2876bf38702ba3f172f75

      SHA256

      239188ccb58064385d07c0f11ff848cbf605f040f51a06dc102e78f7b2b3d17a

      SHA512

      5a82b48b223b6aa518aca74e2b6342045436e483f3a82c57d1ba236b257ce1c80a826e345a0b600796a0164e55a2d286f5b2e0183ef0662b8e96e89d173faa65

      Download Submit
    • C:\ProgramData\win32\BKIVNA.exe
      Filesize

      942KB

      MD5

      a92015618b79adee683000eaaaa30c83

      SHA1

      fd2c04199f3e58c13bd2876bf38702ba3f172f75

      SHA256

      239188ccb58064385d07c0f11ff848cbf605f040f51a06dc102e78f7b2b3d17a

      SHA512

      5a82b48b223b6aa518aca74e2b6342045436e483f3a82c57d1ba236b257ce1c80a826e345a0b600796a0164e55a2d286f5b2e0183ef0662b8e96e89d173faa65

      Download Submit
    • C:\Users\Admin\AppData\Local\Temp\tmp78AF.tmp.bat
      Filesize

      140B

      MD5

      8f65663511fed6cc12369bbfcd2f4c4a

      SHA1

      7dbe34d6757386e9b0d05a631a9568154a4b9695

      SHA256

      2676d1f8472ac3a359724e2e09ac72e669b435346abd7438c0f1179ff1e12462

      SHA512

      24fce0619ac3501d8494798ce86604f18afa451903ef6dac2b73a42c16f72316e54c2d72508c1a9798317a1789c035ce2137537a06fe2db7169daaf63732f171

      Download Submit
    • memory/1508-127-0x0000000140000000-0x0000000142EFE000-memory.dmp
      Filesize

      47.0MB

      Download
    • memory/1508-128-0x0000000142EFC000-mapping.dmp
      Download
    • memory/1508-129-0x0000000140000000-0x0000000142EFE000-memory.dmp
      Filesize

      47.0MB

      Download
    • memory/2548-118-0x0000000000C80000-0x0000000000D70000-memory.dmp
      Filesize

      960KB

      Download
    • memory/2764-119-0x0000000000000000-mapping.dmp
      Download
    • memory/3632-121-0x0000000000000000-mapping.dmp
      Download
    • memory/3868-122-0x0000000000000000-mapping.dmp
      Download
    • memory/4220-125-0x0000000000000000-mapping.dmp
      Download
    • memory/4388-126-0x0000000000000000-mapping.dmp
      Download