Analysis

  • max time kernel
    40s
  • max time network
    44s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    20-05-2022 22:18

General

  • Target

    bc2612aeae58ca2f8eaee44f3da03e34fac8a6c95f5afc083d188587c684f349.exe

  • Size

    2.9MB

  • MD5

    27ac58d73248ebb72b350a1d0642e866

  • SHA1

    88697d4f4d6e00a8ff29083a1a97c8d150f8939b

  • SHA256

    bc2612aeae58ca2f8eaee44f3da03e34fac8a6c95f5afc083d188587c684f349

  • SHA512

    db8c968b3415d02868bc0fb01cb6104504a058c3f6dd1769a8e56bb1c47ed830e2b8d8e9873cd6fbfd15dfff4d46999f1562cb06c8427d9b007108ad1793f998

Score
10/10

Malware Config

Signatures

  • suricata: ET MALWARE DCRat Initial CnC Activity

    suricata: ET MALWARE DCRat Initial CnC Activity

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • 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.

  • Loads dropped DLL 2 IoCs
  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bc2612aeae58ca2f8eaee44f3da03e34fac8a6c95f5afc083d188587c684f349.exe
    "C:\Users\Admin\AppData\Local\Temp\bc2612aeae58ca2f8eaee44f3da03e34fac8a6c95f5afc083d188587c684f349.exe"
    1⤵
    • Checks BIOS information in registry
    • Loads dropped DLL
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1120
    • C:\$Recycle.Bin\S-1-5-21-790309383-526510583-3802439154-1000\sppsvc32.exe
      "C:\$Recycle.Bin\S-1-5-21-790309383-526510583-3802439154-1000\sppsvc32.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:1916

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\$Recycle.Bin\S-1-5-21-790309383-526510583-3802439154-1000\sppsvc32.exe

    Filesize

    2.9MB

    MD5

    27ac58d73248ebb72b350a1d0642e866

    SHA1

    88697d4f4d6e00a8ff29083a1a97c8d150f8939b

    SHA256

    bc2612aeae58ca2f8eaee44f3da03e34fac8a6c95f5afc083d188587c684f349

    SHA512

    db8c968b3415d02868bc0fb01cb6104504a058c3f6dd1769a8e56bb1c47ed830e2b8d8e9873cd6fbfd15dfff4d46999f1562cb06c8427d9b007108ad1793f998

  • \$Recycle.Bin\S-1-5-21-790309383-526510583-3802439154-1000\sppsvc32.exe

    Filesize

    2.9MB

    MD5

    27ac58d73248ebb72b350a1d0642e866

    SHA1

    88697d4f4d6e00a8ff29083a1a97c8d150f8939b

    SHA256

    bc2612aeae58ca2f8eaee44f3da03e34fac8a6c95f5afc083d188587c684f349

    SHA512

    db8c968b3415d02868bc0fb01cb6104504a058c3f6dd1769a8e56bb1c47ed830e2b8d8e9873cd6fbfd15dfff4d46999f1562cb06c8427d9b007108ad1793f998

  • \$Recycle.Bin\S-1-5-21-790309383-526510583-3802439154-1000\sppsvc32.exe

    Filesize

    2.9MB

    MD5

    27ac58d73248ebb72b350a1d0642e866

    SHA1

    88697d4f4d6e00a8ff29083a1a97c8d150f8939b

    SHA256

    bc2612aeae58ca2f8eaee44f3da03e34fac8a6c95f5afc083d188587c684f349

    SHA512

    db8c968b3415d02868bc0fb01cb6104504a058c3f6dd1769a8e56bb1c47ed830e2b8d8e9873cd6fbfd15dfff4d46999f1562cb06c8427d9b007108ad1793f998

  • memory/1120-54-0x00000000759E1000-0x00000000759E3000-memory.dmp

    Filesize

    8KB

  • memory/1120-55-0x0000000077A50000-0x0000000077BD0000-memory.dmp

    Filesize

    1.5MB

  • memory/1120-58-0x0000000000F50000-0x000000000178A000-memory.dmp

    Filesize

    8.2MB

  • memory/1916-61-0x0000000000000000-mapping.dmp

  • memory/1916-66-0x0000000000910000-0x000000000114A000-memory.dmp

    Filesize

    8.2MB

  • memory/1916-67-0x0000000077A50000-0x0000000077BD0000-memory.dmp

    Filesize

    1.5MB