Overview

overview

10

Static

static

bc2612aeae...49.exe

windows7_x64

10

bc2612aeae...49.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    148s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20-05-2022 22:18

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General

  • Target

    bc2612aeae58ca2f8eaee44f3da03e34fac8a6c95f5afc083d188587c684f349.exe

  • Size

    2.9MB

  • MD5

    27ac58d73248ebb72b350a1d0642e866

  • SHA1

    88697d4f4d6e00a8ff29083a1a97c8d150f8939b

  • SHA256

    bc2612aeae58ca2f8eaee44f3da03e34fac8a6c95f5afc083d188587c684f349

  • SHA512

    db8c968b3415d02868bc0fb01cb6104504a058c3f6dd1769a8e56bb1c47ed830e2b8d8e9873cd6fbfd15dfff4d46999f1562cb06c8427d9b007108ad1793f998

Score
10/10
evasionsuricatatrojan

Malware Config

Signatures

  • suricata: ET MALWARE DCRat Initial CnC Activity

    suricata: ET MALWARE DCRat Initial CnC Activity

    suricata
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
    evasion
  • Executes dropped EXE 1 IoCs
  • Checks BIOS information in registry 2 TTPs 4 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Checks whether UAC is enabled 1 TTPs 2 IoCs
    evasiontrojan
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Drops file in Program Files directory 3 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bc2612aeae58ca2f8eaee44f3da03e34fac8a6c95f5afc083d188587c684f349.exe
    "C:\Users\Admin\AppData\Local\Temp\bc2612aeae58ca2f8eaee44f3da03e34fac8a6c95f5afc083d188587c684f349.exe"
    1⤵
    • Checks BIOS information in registry
    • Checks computer location settings
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2584
    • C:\PerfLogs\RuntimeBroker32.exe
      "C:\PerfLogs\RuntimeBroker32.exe"
      2⤵
      • Executes dropped EXE
      • Checks BIOS information in registry
      • Checks whether UAC is enabled
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1780
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1780 -s 1612
        3⤵
        • Program crash
        PID:3276
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 1780 -ip 1780
    1⤵
      PID:3620

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Persistence

    Privilege Escalation

    Defense Evasion

    Virtualization/Sandbox Evasion

    1
    T1497

    Credential Access

    Discovery

    Query Registry

    3
    T1012

    Virtualization/Sandbox Evasion

    1
    T1497

    System Information Discovery

    4
    T1082

    Lateral Movement

    Collection

    Exfiltration

    Command and Control

    Impact

    Replay Monitor

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    Downloads

    • C:\PerfLogs\RuntimeBroker32.exe
      Filesize

      2.9MB

      MD5

      27ac58d73248ebb72b350a1d0642e866

      SHA1

      88697d4f4d6e00a8ff29083a1a97c8d150f8939b

      SHA256

      bc2612aeae58ca2f8eaee44f3da03e34fac8a6c95f5afc083d188587c684f349

      SHA512

      db8c968b3415d02868bc0fb01cb6104504a058c3f6dd1769a8e56bb1c47ed830e2b8d8e9873cd6fbfd15dfff4d46999f1562cb06c8427d9b007108ad1793f998

      Download Submit
    • C:\PerfLogs\RuntimeBroker32.exe
      Filesize

      2.9MB

      MD5

      27ac58d73248ebb72b350a1d0642e866

      SHA1

      88697d4f4d6e00a8ff29083a1a97c8d150f8939b

      SHA256

      bc2612aeae58ca2f8eaee44f3da03e34fac8a6c95f5afc083d188587c684f349

      SHA512

      db8c968b3415d02868bc0fb01cb6104504a058c3f6dd1769a8e56bb1c47ed830e2b8d8e9873cd6fbfd15dfff4d46999f1562cb06c8427d9b007108ad1793f998

      Download Submit
    • memory/1780-136-0x0000000000000000-mapping.dmp
      Download
    • memory/1780-141-0x0000000000C30000-0x000000000146A000-memory.dmp
      Filesize

      8.2MB

      Download
    • memory/1780-142-0x0000000077DF0000-0x0000000077F93000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2584-132-0x0000000077DF0000-0x0000000077F93000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2584-133-0x0000000000F40000-0x000000000177A000-memory.dmp
      Filesize

      8.2MB

      Download
    • memory/2584-134-0x0000000005DF0000-0x0000000005E82000-memory.dmp
      Filesize

      584KB

      Download
    • memory/2584-135-0x0000000006440000-0x00000000069E4000-memory.dmp
      Filesize

      5.6MB

      Download