Analysis

  • max time kernel
    133s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    01-02-2022 01:18

General

  • Target

    f743c0849d69b5ea2f7eaf28831c86c1536cc27ae470f20e49223cbdba9c677c.exe

  • Size

    1.2MB

  • MD5

    5af5e3426926e551ed3acc5bea45eac6

  • SHA1

    e24a174fff19d873df0fa5eddd9ec534617ed9d7

  • SHA256

    f743c0849d69b5ea2f7eaf28831c86c1536cc27ae470f20e49223cbdba9c677c

  • SHA512

    17dcaa5a111d533ed4aff228f8df37042f3525ef7212a2ef4a0f11136a15ee6ed3daacde832d3aa33ffe36c52c3d0d1766fc2f1745131f9da39f346b0e9f42e3

Malware Config

Signatures

  • Mimikatz

    mimikatz is an open source tool to dump credentials on Windows.

  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • mimikatz is an open source tool to dump credentials on Windows 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f743c0849d69b5ea2f7eaf28831c86c1536cc27ae470f20e49223cbdba9c677c.exe
    "C:\Users\Admin\AppData\Local\Temp\f743c0849d69b5ea2f7eaf28831c86c1536cc27ae470f20e49223cbdba9c677c.exe"
    1⤵
    • Modifies system executable filetype association
    • Loads dropped DLL
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1204
    • C:\Users\Admin\AppData\Local\Temp\3582-490\f743c0849d69b5ea2f7eaf28831c86c1536cc27ae470f20e49223cbdba9c677c.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\f743c0849d69b5ea2f7eaf28831c86c1536cc27ae470f20e49223cbdba9c677c.exe"
      2⤵
      • Executes dropped EXE
      PID:976

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\3582-490\f743c0849d69b5ea2f7eaf28831c86c1536cc27ae470f20e49223cbdba9c677c.exe
    MD5

    9cd25cee26f115876f1592dcc63cc650

    SHA1

    40963139cc017a296cb9826c88749099ffdf413e

    SHA256

    ece23612029589623e0ae27da942440a9b0a9cd4f9681ec866613e64a247969d

    SHA512

    4cdc76d799f7cb1afc1abbf5ba8506e58d2fe9ca50a6b2ee1423bc90d6a99cf812b1dfe2d76e83ed0b918e2a582eb942925781260412d232fd5b6138c6cf2f4b

  • \PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE
    MD5

    9e2b9928c89a9d0da1d3e8f4bd96afa7

    SHA1

    ec66cda99f44b62470c6930e5afda061579cde35

    SHA256

    8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

    SHA512

    2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

  • \Users\Admin\AppData\Local\Temp\3582-490\f743c0849d69b5ea2f7eaf28831c86c1536cc27ae470f20e49223cbdba9c677c.exe
    MD5

    9cd25cee26f115876f1592dcc63cc650

    SHA1

    40963139cc017a296cb9826c88749099ffdf413e

    SHA256

    ece23612029589623e0ae27da942440a9b0a9cd4f9681ec866613e64a247969d

    SHA512

    4cdc76d799f7cb1afc1abbf5ba8506e58d2fe9ca50a6b2ee1423bc90d6a99cf812b1dfe2d76e83ed0b918e2a582eb942925781260412d232fd5b6138c6cf2f4b

  • \Users\Admin\AppData\Local\Temp\3582-490\f743c0849d69b5ea2f7eaf28831c86c1536cc27ae470f20e49223cbdba9c677c.exe
    MD5

    9cd25cee26f115876f1592dcc63cc650

    SHA1

    40963139cc017a296cb9826c88749099ffdf413e

    SHA256

    ece23612029589623e0ae27da942440a9b0a9cd4f9681ec866613e64a247969d

    SHA512

    4cdc76d799f7cb1afc1abbf5ba8506e58d2fe9ca50a6b2ee1423bc90d6a99cf812b1dfe2d76e83ed0b918e2a582eb942925781260412d232fd5b6138c6cf2f4b

  • memory/1204-55-0x0000000075831000-0x0000000075833000-memory.dmp
    Filesize

    8KB