Overview

overview

8

Static

static

767a2c2cdb...5f.exe

windows7_x64

8

767a2c2cdb...5f.exe

windows10-2004_x64

8

Analysis

  • max time kernel
    152s
  • max time network
    184s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20-05-2022 22:49

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General

  • Target

    767a2c2cdb3e34333727a4594d345d55da89528d0219bf8e9a2b01567ad0045f.exe

  • Size

    181KB

  • MD5

    33caaaa642770f60f9298e627ac2a70e

  • SHA1

    b79349e8ef626045d86d3d099d4ad6cf58d6c7c0

  • SHA256

    767a2c2cdb3e34333727a4594d345d55da89528d0219bf8e9a2b01567ad0045f

  • SHA512

    4aaf1835f7909672d8356e7b4bbb06391be57030d98fd3e9bbe3bed42720dd001d8c32a64f1e197156d0365551ab3004ee1e01554f5bbf99b246f9d06fed3d64

Score
8/10
evasionpersistence

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs
    evasion
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • 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 52 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\767a2c2cdb3e34333727a4594d345d55da89528d0219bf8e9a2b01567ad0045f.exe
    "C:\Users\Admin\AppData\Local\Temp\767a2c2cdb3e34333727a4594d345d55da89528d0219bf8e9a2b01567ad0045f.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3360
    • C:\Users\Admin\AppData\Roaming\server.exe
      "C:\Users\Admin\AppData\Roaming\server.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2028
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\server.exe" "server.exe" ENABLE
        3⤵
          PID:4100

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Persistence

    Modify Existing Service

    1
    T1031

    Registry Run Keys / Startup Folder

    1
    T1060

    Privilege Escalation

    Defense Evasion

    Modify Registry

    1
    T1112

    Credential Access

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    2
    T1082

    Lateral Movement

    Collection

    Exfiltration

    Command and Control

    Impact

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Roaming\server.exe
      Filesize

      181KB

      MD5

      33caaaa642770f60f9298e627ac2a70e

      SHA1

      b79349e8ef626045d86d3d099d4ad6cf58d6c7c0

      SHA256

      767a2c2cdb3e34333727a4594d345d55da89528d0219bf8e9a2b01567ad0045f

      SHA512

      4aaf1835f7909672d8356e7b4bbb06391be57030d98fd3e9bbe3bed42720dd001d8c32a64f1e197156d0365551ab3004ee1e01554f5bbf99b246f9d06fed3d64

      Download Submit
    • C:\Users\Admin\AppData\Roaming\server.exe
      Filesize

      181KB

      MD5

      33caaaa642770f60f9298e627ac2a70e

      SHA1

      b79349e8ef626045d86d3d099d4ad6cf58d6c7c0

      SHA256

      767a2c2cdb3e34333727a4594d345d55da89528d0219bf8e9a2b01567ad0045f

      SHA512

      4aaf1835f7909672d8356e7b4bbb06391be57030d98fd3e9bbe3bed42720dd001d8c32a64f1e197156d0365551ab3004ee1e01554f5bbf99b246f9d06fed3d64

      Download Submit
    • memory/2028-131-0x0000000000000000-mapping.dmp
      Download
    • memory/2028-134-0x00000000754D0000-0x0000000075A81000-memory.dmp
      Filesize

      5.7MB

      Download
    • memory/3360-130-0x00000000754D0000-0x0000000075A81000-memory.dmp
      Filesize

      5.7MB

      Download
    • memory/4100-135-0x0000000000000000-mapping.dmp
      Download