Analysis

  • max time kernel
    123s
  • max time network
    129s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    13-05-2021 12:56

General

  • Target

    fd26d934539373f62047a61ecc0728a6b32b39b22e6b84879957c77d6eb5ac5e.exe

  • Size

    25KB

  • MD5

    f99e33d44f5c430d20a197127f79027d

  • SHA1

    05f8f1a62302a8aa4f83bbe09ef9de0f3a8e0956

  • SHA256

    fd26d934539373f62047a61ecc0728a6b32b39b22e6b84879957c77d6eb5ac5e

  • SHA512

    3c4ee728b271f05850c58219fc3d809a5759db7ba7001c41ad5b1eab579d8befe0ef09b8943acb327b549e337b9a7848e0c12b9006a01ceca2e5528cfc3df6e2

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fd26d934539373f62047a61ecc0728a6b32b39b22e6b84879957c77d6eb5ac5e.exe
    "C:\Users\Admin\AppData\Local\Temp\fd26d934539373f62047a61ecc0728a6b32b39b22e6b84879957c77d6eb5ac5e.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3892
    • C:\Users\Admin\AppData\Local\Temp\hummy.exe
      "C:\Users\Admin\AppData\Local\Temp\hummy.exe"
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      PID:2388

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Install Root Certificate

1
T1130

Modify Registry

1
T1112

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\hummy.exe
    MD5

    2354425357251696c6185f2a82b12b20

    SHA1

    46087e637f8fc98e83f98bb283edc7650aed5231

    SHA256

    5fb9c0deb7497f11c50b2ffa060004f8eb42a3551cf890a6ab95d5baec5986fd

    SHA512

    63b1f2fb9e97654d5dd81b0d0ae1ba19c9a46ed5b3596a202e4589b55b1d2b445fa85a64f519850a9c4a2dd99a18f003054e7e82b8d0e4fdc8d1b947b46c4bf0

  • C:\Users\Admin\AppData\Local\Temp\hummy.exe
    MD5

    2354425357251696c6185f2a82b12b20

    SHA1

    46087e637f8fc98e83f98bb283edc7650aed5231

    SHA256

    5fb9c0deb7497f11c50b2ffa060004f8eb42a3551cf890a6ab95d5baec5986fd

    SHA512

    63b1f2fb9e97654d5dd81b0d0ae1ba19c9a46ed5b3596a202e4589b55b1d2b445fa85a64f519850a9c4a2dd99a18f003054e7e82b8d0e4fdc8d1b947b46c4bf0

  • memory/2388-114-0x0000000000000000-mapping.dmp