Overview

overview

10

Static

static

1

b5012f4ee1...6f.exe

windows7-x64

10

b5012f4ee1...6f.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    04-02-2023 07:16

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General

  • Target

    b5012f4ee136a3d2bc2cb89dc749cedc8d65dded53d2a7418342ad578db3ef6f.exe

  • Size

    3.3MB

  • MD5

    031e2e05add303f0e8adbca3be022151

  • SHA1

    719acfd7047f5a2003ed1386b97ed5e2868d09d2

  • SHA256

    b5012f4ee136a3d2bc2cb89dc749cedc8d65dded53d2a7418342ad578db3ef6f

  • SHA512

    86b5466b716bddceb1b6ef482f1683f248e8120100d8e529178a21d4542337d3b4c9362bb4fbbf90c2759d8413f3e2ca2112a20e32dccd44bce07bb9c3388536

  • SSDEEP

    49152:By408wwmrOYMMJNBzgz15u+djZSHc2E2Y8csb6Aged9XJUOHUr+RmE:ayoDz+15VzSHc2EJ8cc3xtoKU

Score
10/10
purecrypterdownloaderloaderpersistence

Malware Config

Signatures

  • Detect PureCrypter injector 1 IoCs
    loader
  • PureCrypter

    PureCrypter is a .NET malware loader first seen in early 2021.

    loaderdownloaderpurecrypter
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 21 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 48 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b5012f4ee136a3d2bc2cb89dc749cedc8d65dded53d2a7418342ad578db3ef6f.exe
    "C:\Users\Admin\AppData\Local\Temp\b5012f4ee136a3d2bc2cb89dc749cedc8d65dded53d2a7418342ad578db3ef6f.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:980
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1496
    • C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
      "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\Ifdtktlacord_certificate_of_insurance.pdf"
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:960
    • C:\Users\Admin\AppData\Local\Temp\b5012f4ee136a3d2bc2cb89dc749cedc8d65dded53d2a7418342ad578db3ef6f.exe
      C:\Users\Admin\AppData\Local\Temp\b5012f4ee136a3d2bc2cb89dc749cedc8d65dded53d2a7418342ad578db3ef6f.exe
      2⤵
        PID:1412
      • C:\Users\Admin\AppData\Local\Temp\b5012f4ee136a3d2bc2cb89dc749cedc8d65dded53d2a7418342ad578db3ef6f.exe
        C:\Users\Admin\AppData\Local\Temp\b5012f4ee136a3d2bc2cb89dc749cedc8d65dded53d2a7418342ad578db3ef6f.exe
        2⤵
          PID:1880
        • C:\Users\Admin\AppData\Local\Temp\b5012f4ee136a3d2bc2cb89dc749cedc8d65dded53d2a7418342ad578db3ef6f.exe
          C:\Users\Admin\AppData\Local\Temp\b5012f4ee136a3d2bc2cb89dc749cedc8d65dded53d2a7418342ad578db3ef6f.exe
          2⤵
            PID:1204
          • C:\Users\Admin\AppData\Local\Temp\b5012f4ee136a3d2bc2cb89dc749cedc8d65dded53d2a7418342ad578db3ef6f.exe
            C:\Users\Admin\AppData\Local\Temp\b5012f4ee136a3d2bc2cb89dc749cedc8d65dded53d2a7418342ad578db3ef6f.exe
            2⤵
              PID:436
            • C:\Users\Admin\AppData\Local\Temp\b5012f4ee136a3d2bc2cb89dc749cedc8d65dded53d2a7418342ad578db3ef6f.exe
              C:\Users\Admin\AppData\Local\Temp\b5012f4ee136a3d2bc2cb89dc749cedc8d65dded53d2a7418342ad578db3ef6f.exe
              2⤵
                PID:288
              • C:\Users\Admin\AppData\Local\Temp\b5012f4ee136a3d2bc2cb89dc749cedc8d65dded53d2a7418342ad578db3ef6f.exe
                C:\Users\Admin\AppData\Local\Temp\b5012f4ee136a3d2bc2cb89dc749cedc8d65dded53d2a7418342ad578db3ef6f.exe
                2⤵
                  PID:840
                • C:\Users\Admin\AppData\Local\Temp\b5012f4ee136a3d2bc2cb89dc749cedc8d65dded53d2a7418342ad578db3ef6f.exe
                  C:\Users\Admin\AppData\Local\Temp\b5012f4ee136a3d2bc2cb89dc749cedc8d65dded53d2a7418342ad578db3ef6f.exe
                  2⤵
                    PID:1696
                  • C:\Users\Admin\AppData\Local\Temp\b5012f4ee136a3d2bc2cb89dc749cedc8d65dded53d2a7418342ad578db3ef6f.exe
                    C:\Users\Admin\AppData\Local\Temp\b5012f4ee136a3d2bc2cb89dc749cedc8d65dded53d2a7418342ad578db3ef6f.exe
                    2⤵
                      PID:1456
                    • C:\Users\Admin\AppData\Local\Temp\b5012f4ee136a3d2bc2cb89dc749cedc8d65dded53d2a7418342ad578db3ef6f.exe
                      C:\Users\Admin\AppData\Local\Temp\b5012f4ee136a3d2bc2cb89dc749cedc8d65dded53d2a7418342ad578db3ef6f.exe
                      2⤵
                        PID:1980
                      • C:\Users\Admin\AppData\Local\Temp\b5012f4ee136a3d2bc2cb89dc749cedc8d65dded53d2a7418342ad578db3ef6f.exe
                        C:\Users\Admin\AppData\Local\Temp\b5012f4ee136a3d2bc2cb89dc749cedc8d65dded53d2a7418342ad578db3ef6f.exe
                        2⤵
                          PID:1048

                      Network

                      MITRE ATT&CK Matrix ATT&CK v6

                      Initial Access

                      Execution

                      Persistence

                      Registry Run Keys / Startup Folder

                      1
                      T1060

                      Privilege Escalation

                      Defense Evasion

                      Modify Registry

                      1
                      T1112

                      Credential Access

                      Discovery

                      System Information Discovery

                      1
                      T1082

                      Lateral Movement

                      Collection

                      Exfiltration

                      Command and Control

                      Impact

                      Replay Monitor

                      Loading Replay Monitor...

                      Downloads

                      • C:\Users\Admin\AppData\Local\Temp\Ifdtktlacord_certificate_of_insurance.pdf
                        Filesize

                        102KB

                        MD5

                        261fa374ef694300b6bb6aa3d27ccb34

                        SHA1

                        cc931c06a52082b031d03ea8c517f69d3bdf0e13

                        SHA256

                        5921d7a39219dac7bb469d80c4d3932e457a5a17249155c389c1ef47d9d8e452

                        SHA512

                        807914c336c784668291b82a36e747b2945afd15e5bec77864f9aa61efbd3f65f63901e655cf43c1f84f15fed60422adc8c3f425d1dfdff4d6541fb8f9ec2001

                        Download Submit
                      • memory/960-62-0x0000000000000000-mapping.dmp
                        Download
                      • memory/960-66-0x0000000002C50000-0x0000000002CC6000-memory.dmp
                        Filesize

                        472KB

                        Download
                      • memory/980-54-0x0000000000320000-0x0000000000666000-memory.dmp
                        Filesize

                        3.3MB

                        Download
                      • memory/980-55-0x0000000004A30000-0x0000000004D64000-memory.dmp
                        Filesize

                        3.2MB

                        Download
                      • memory/980-56-0x0000000075811000-0x0000000075813000-memory.dmp
                        Filesize

                        8KB

                        Download
                      • memory/980-65-0x0000000005560000-0x000000000565E000-memory.dmp
                        Filesize

                        1016KB

                        Download
                      • memory/1496-57-0x0000000000000000-mapping.dmp
                        Download
                      • memory/1496-59-0x000000006F900000-0x000000006FEAB000-memory.dmp
                        Filesize

                        5.7MB

                        Download
                      • memory/1496-60-0x000000006F900000-0x000000006FEAB000-memory.dmp
                        Filesize

                        5.7MB

                        Download
                      • memory/1496-61-0x000000006F900000-0x000000006FEAB000-memory.dmp
                        Filesize

                        5.7MB

                        Download