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Overview

overview

10

Static

static

023bf1a578...73.exe

windows7-x64

10

023bf1a578...73.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    180s
  • max time network
    189s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/11/2022, 22:10

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General

  • Target

    023bf1a57863990f3335dbe001562e8b3e4570cab3e2dc29d4649d15eadb4e73.exe

  • Size

    858KB

  • MD5

    07f0e6c7ec8f24527b27d8135a5dae5f

  • SHA1

    133fb191906b0432c2d8769bbd87e754e5d95f80

  • SHA256

    023bf1a57863990f3335dbe001562e8b3e4570cab3e2dc29d4649d15eadb4e73

  • SHA512

    124d175174f4dcef40e1af195431a76fc61ee9f36d622ff7776af8f58a5c6cc7e9fc8145257ae97a103982704efda72bb447f07006feabd025db1582a6a81479

  • SSDEEP

    6144:a+nglw9ayQv3ahvyn/PU7O0KXgTTSjyEN2ERBOzlSmGWsYs5qDbXDgbFowfCpJi7:rjS3Yvyn/0TvSmqN5yTD8aXiLX

Score
10/10
persistence

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
    persistence
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Adds Run key to start application 2 TTPs 4 IoCs
    persistence
  • Drops file in System32 directory 3 IoCs
  • 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.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\023bf1a57863990f3335dbe001562e8b3e4570cab3e2dc29d4649d15eadb4e73.exe
    "C:\Users\Admin\AppData\Local\Temp\023bf1a57863990f3335dbe001562e8b3e4570cab3e2dc29d4649d15eadb4e73.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks computer location settings
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1264
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c reg ADD HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run /v freizer /t REG_SZ /d C:\WINDOWS\system32\freizer.exe /f
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3940
      • C:\Windows\SysWOW64\reg.exe
        reg ADD HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run /v freizer /t REG_SZ /d C:\WINDOWS\system32\freizer.exe /f
        3⤵
        • Adds Run key to start application
        PID:4656
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c reg ADD HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run /v svchost /t REG_SZ /d C:\WINDOWS\system32\svchost.exe /f
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4360
      • C:\Windows\SysWOW64\reg.exe
        reg ADD HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run /v svchost /t REG_SZ /d C:\WINDOWS\system32\svchost.exe /f
        3⤵
        • Adds Run key to start application
        PID:4744
    • C:\windows\temp\21421.exe
      "C:\windows\temp\21421.exe"
      2⤵
      • Executes dropped EXE
      PID:4236

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Windows\Temp\21421.exe
    Filesize

    15KB

    MD5

    eb934876df98326f113edbc7c8bffef3

    SHA1

    f5cba9aec319c16276e7a79bd8827d1f132bf02f

    SHA256

    3bf1758a111fe6253b21d0f090a92e1c35c8f6a3277b843a38a5fcd486baafc3

    SHA512

    eb03c7fb8fac405d7d94adcf22da168386efb5eaedbcf5cdb54ef0390c0bac53894cc7d3d7543c91ef28a4192729391d72614f435a11be5619be1594eb959178

    Download Submit

  • C:\windows\temp\21421.exe
    Filesize

    15KB

    MD5

    eb934876df98326f113edbc7c8bffef3

    SHA1

    f5cba9aec319c16276e7a79bd8827d1f132bf02f

    SHA256

    3bf1758a111fe6253b21d0f090a92e1c35c8f6a3277b843a38a5fcd486baafc3

    SHA512

    eb03c7fb8fac405d7d94adcf22da168386efb5eaedbcf5cdb54ef0390c0bac53894cc7d3d7543c91ef28a4192729391d72614f435a11be5619be1594eb959178

    Download Submit

  • memory/4236-139-0x0000000073E10000-0x00000000743C1000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/4236-140-0x0000000073E10000-0x00000000743C1000-memory.dmp

    Filesize

    5.7MB

    Download