Analysis

  • max time kernel
    120s
  • max time network
    136s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    22-02-2022 23:44

General

  • Target

    04ea79ce136a1479bd81c08e7b4735ba6698ea8432b9a74ce40e179cff6f530e.exe

  • Size

    571KB

  • MD5

    cca11f17931ff16cabe343033106f7da

  • SHA1

    831e2d73b6469db5f7f5f84f1c5bbc61281a7911

  • SHA256

    04ea79ce136a1479bd81c08e7b4735ba6698ea8432b9a74ce40e179cff6f530e

  • SHA512

    4168218e40c69d2edd71d34af770a13a369c4d00b02f05b25f5382fbd10fb3cf2ab23f6c66704c12818bbcc008c3ad1dcf59fde8e4a21bf6b2ae6e4e7ac6467d

Malware Config

Signatures

  • 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.

  • Nirsoft 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.

  • Enumerates connected drives 3 TTPs 1 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Maps connected drives based on registry 3 TTPs 2 IoCs

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

  • 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 behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\04ea79ce136a1479bd81c08e7b4735ba6698ea8432b9a74ce40e179cff6f530e.exe
    "C:\Users\Admin\AppData\Local\Temp\04ea79ce136a1479bd81c08e7b4735ba6698ea8432b9a74ce40e179cff6f530e.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:1412
    • C:\Users\Admin\AppData\Local\Temp\3582-490\04ea79ce136a1479bd81c08e7b4735ba6698ea8432b9a74ce40e179cff6f530e.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\04ea79ce136a1479bd81c08e7b4735ba6698ea8432b9a74ce40e179cff6f530e.exe"
      2⤵
      • Executes dropped EXE
      • Enumerates connected drives
      • Maps connected drives based on registry
      • Suspicious behavior: GetForegroundWindowSpam
      PID:1192

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\3582-490\04ea79ce136a1479bd81c08e7b4735ba6698ea8432b9a74ce40e179cff6f530e.exe
    MD5

    3ac82ba4aee40ca1f6607d7378d41d12

    SHA1

    f6643dab505b6e4489e201c62309aea63f4520ce

    SHA256

    31eb4115e6a2ff36bdc86642d11db743b2e2485f5d2c115430d6fa50c0691183

    SHA512

    15fe6aac530b8a37c4bf5c22d130427b7c4265a100f856c518bff084ee2934b26cd8e17c75660d5c42a98a519f702e6e32ff5eee2946febb03c81f92b9b8f2c2

  • \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\04ea79ce136a1479bd81c08e7b4735ba6698ea8432b9a74ce40e179cff6f530e.exe
    MD5

    3ac82ba4aee40ca1f6607d7378d41d12

    SHA1

    f6643dab505b6e4489e201c62309aea63f4520ce

    SHA256

    31eb4115e6a2ff36bdc86642d11db743b2e2485f5d2c115430d6fa50c0691183

    SHA512

    15fe6aac530b8a37c4bf5c22d130427b7c4265a100f856c518bff084ee2934b26cd8e17c75660d5c42a98a519f702e6e32ff5eee2946febb03c81f92b9b8f2c2

  • \Users\Admin\AppData\Local\Temp\3582-490\04ea79ce136a1479bd81c08e7b4735ba6698ea8432b9a74ce40e179cff6f530e.exe
    MD5

    3ac82ba4aee40ca1f6607d7378d41d12

    SHA1

    f6643dab505b6e4489e201c62309aea63f4520ce

    SHA256

    31eb4115e6a2ff36bdc86642d11db743b2e2485f5d2c115430d6fa50c0691183

    SHA512

    15fe6aac530b8a37c4bf5c22d130427b7c4265a100f856c518bff084ee2934b26cd8e17c75660d5c42a98a519f702e6e32ff5eee2946febb03c81f92b9b8f2c2

  • memory/1412-54-0x0000000076071000-0x0000000076073000-memory.dmp
    Filesize

    8KB