Analysis

  • max time kernel
    124s
  • max time network
    58s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    23/09/2021, 12:56

General

  • Target
    7f3fb65cfe033507b34f16b379fd1525.exe
  • Size 120KB
  • Sample210923-p6ebfaeed2
  • SHA256 cd3a5dfcef8038b02442c0875583b1bbe5b9ed15721bb47c4615728f46b9a91d
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • 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.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7f3fb65cfe033507b34f16b379fd1525.exe
    "C:\Users\Admin\AppData\Local\Temp\7f3fb65cfe033507b34f16b379fd1525.exe"
    1⤵
    • Modifies system certificate store
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1276
    • C:\ProgramData\4984050.exe
      "C:\ProgramData\4984050.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1960

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/1276-59-0x00000000010E0000-0x00000000010E1000-memory.dmp

        memory/1276-61-0x0000000000250000-0x0000000000251000-memory.dmp

        memory/1276-62-0x00000000004E0000-0x00000000004E2000-memory.dmp

        memory/1960-66-0x00000000000A0000-0x00000000000A1000-memory.dmp

        memory/1960-68-0x00000000003A0000-0x00000000003A1000-memory.dmp

        memory/1960-69-0x00000000047A0000-0x00000000047A1000-memory.dmp