Analysis

  • max time kernel
    137s
  • max time network
    176s
  • platform
    windows10-1703_x64
  • resource
    win10-20220901-en
  • resource tags

    arch:x64arch:x86image:win10-20220901-enlocale:en-usos:windows10-1703-x64system
  • submitted
    25-01-2023 22:23

General

  • Target

    cd7c2065e6fd3d81d85b8eb62c828292c291703d5dcde7511f3ae2c2c53e738c.exe

  • Size

    2.4MB

  • MD5

    a61ca48da85a9ca93ca3e2b846f49603

  • SHA1

    e76f6120f4fee7fbee5243c9e3aa53c65cc3acbf

  • SHA256

    cd7c2065e6fd3d81d85b8eb62c828292c291703d5dcde7511f3ae2c2c53e738c

  • SHA512

    24aa2c189e1420ec6fc82a9e1e3e0a0a186f238758c2decabac950e8b08a305e306eacbe544eaf7dbeb2b7080f99ff0ad2c6f573f7262a13b11a549e0ae8511d

  • SSDEEP

    49152:qfFfLewfpME45GDDqvI/Nd1xVovNyNqy3h3aiKT0wtKXtycqm2vfOtI:OFKwR25GDDr1sNyAyg/titynB3Oa

Malware Config

Signatures

  • Detect PureCrypter injector 1 IoCs
  • PureCrypter

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 53 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cd7c2065e6fd3d81d85b8eb62c828292c291703d5dcde7511f3ae2c2c53e738c.exe
    "C:\Users\Admin\AppData\Local\Temp\cd7c2065e6fd3d81d85b8eb62c828292c291703d5dcde7511f3ae2c2c53e738c.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:344
    • 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:4544
    • C:\Users\Admin\AppData\Local\Temp\cd7c2065e6fd3d81d85b8eb62c828292c291703d5dcde7511f3ae2c2c53e738c.exe
      C:\Users\Admin\AppData\Local\Temp\cd7c2065e6fd3d81d85b8eb62c828292c291703d5dcde7511f3ae2c2c53e738c.exe
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3776
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3776 -s 1696
        3⤵
        • Program crash
        PID:616

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\cd7c2065e6fd3d81d85b8eb62c828292c291703d5dcde7511f3ae2c2c53e738c.exe.log
    Filesize

    1KB

    MD5

    a4c9efdd12de4be6c51ab236c66c2ab3

    SHA1

    dbf3506b44d012d086a9721a9d6f754a2300abe1

    SHA256

    4638c54651fd448f457e56d5ac09fa125820e10799bc0f74807fc82c094da2ad

    SHA512

    73e75604411db3a4c3e95efe69d2bf6ae9a97dfe75152868c37d0d6f6f52937d61f7136a54f029a497d8c83b77aaeda59d7de9c71d8ca6e474c17450b00dcc0e

  • memory/344-161-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-148-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-122-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-123-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-124-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-125-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-126-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-127-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-128-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-129-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-130-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-131-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-132-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-133-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-134-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-135-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-136-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-137-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-138-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-139-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-140-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-141-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-142-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-143-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-144-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-145-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-146-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-164-0x00000000057A0000-0x0000000005C9E000-memory.dmp
    Filesize

    5.0MB

  • memory/344-163-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-149-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-162-0x0000000004F30000-0x00000000051A0000-memory.dmp
    Filesize

    2.4MB

  • memory/344-151-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-152-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-153-0x0000000000480000-0x00000000006F0000-memory.dmp
    Filesize

    2.4MB

  • memory/344-154-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-155-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-156-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-157-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-158-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-159-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-160-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-120-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-150-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-121-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-147-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-165-0x0000000005360000-0x00000000053F2000-memory.dmp
    Filesize

    584KB

  • memory/344-166-0x0000000005310000-0x0000000005332000-memory.dmp
    Filesize

    136KB

  • memory/344-167-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-168-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-169-0x0000000005E80000-0x00000000061D0000-memory.dmp
    Filesize

    3.3MB

  • memory/344-170-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-171-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-172-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-173-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-174-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-175-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-176-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-177-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-178-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-179-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-180-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-181-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-182-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-183-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-184-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-185-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-186-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/344-274-0x00000000051A0000-0x00000000051F2000-memory.dmp
    Filesize

    328KB

  • memory/3776-276-0x000000000041612E-mapping.dmp
  • memory/3776-321-0x0000000002E40000-0x0000000002E66000-memory.dmp
    Filesize

    152KB

  • memory/3776-318-0x0000000001500000-0x000000000150A000-memory.dmp
    Filesize

    40KB

  • memory/3776-311-0x0000000000400000-0x000000000041C000-memory.dmp
    Filesize

    112KB

  • memory/4544-188-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/4544-189-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/4544-190-0x0000000077170000-0x00000000772FE000-memory.dmp
    Filesize

    1.6MB

  • memory/4544-268-0x0000000009770000-0x000000000978A000-memory.dmp
    Filesize

    104KB

  • memory/4544-187-0x0000000000000000-mapping.dmp
  • memory/4544-247-0x0000000007970000-0x00000000079D6000-memory.dmp
    Filesize

    408KB

  • memory/4544-248-0x0000000008030000-0x0000000008096000-memory.dmp
    Filesize

    408KB

  • memory/4544-228-0x0000000007A00000-0x0000000008028000-memory.dmp
    Filesize

    6.2MB

  • memory/4544-251-0x0000000008100000-0x000000000811C000-memory.dmp
    Filesize

    112KB

  • memory/4544-252-0x00000000086B0000-0x00000000086FB000-memory.dmp
    Filesize

    300KB

  • memory/4544-256-0x00000000089B0000-0x0000000008A26000-memory.dmp
    Filesize

    472KB

  • memory/4544-267-0x000000000A090000-0x000000000A708000-memory.dmp
    Filesize

    6.5MB

  • memory/4544-223-0x0000000005190000-0x00000000051C6000-memory.dmp
    Filesize

    216KB