Analysis

  • max time kernel
    150s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    19-04-2024 01:18

General

  • Target

    a343cb9b5dab828a9aac1548dbd7c2327ce01cde195725934c4f0a7587258ad3.exe

  • Size

    1.2MB

  • MD5

    0adbcabe88bed42b12992356f64844f8

  • SHA1

    453468f18bfbad686e0915510819bdc8378607ea

  • SHA256

    a343cb9b5dab828a9aac1548dbd7c2327ce01cde195725934c4f0a7587258ad3

  • SHA512

    749ec6b5b9703bb96159360c5d1b87f3ba96b8600352da88939db5a6927ce08981e54c4e5c67a3e0182b6786d686939dd44ebcf6e97643d4d779b9c0cf9a7d4f

  • SSDEEP

    6144:6STzDMaMNhXbyuWt2EHOO+7qeA5fphPFrKz1K5Pe9G6DMzAd2M+od7MHG+tO2tZ0:nTe7AG9G6DMzAo87Cps0o3HPYxuWe

Score
9/10

Malware Config

Signatures

  • Renames multiple (694) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • UPX dump on OEP (original entry point) 4 IoCs
  • Drops startup file 1 IoCs
  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a343cb9b5dab828a9aac1548dbd7c2327ce01cde195725934c4f0a7587258ad3.exe
    "C:\Users\Admin\AppData\Local\Temp\a343cb9b5dab828a9aac1548dbd7c2327ce01cde195725934c4f0a7587258ad3.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2864
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c echo on error resume next:CreateObject("WScript.Shell").Run "C:\Users\Admin\AppData\Local\Temp\a343cb9b5dab828a9aac1548dbd7c2327ce01cde195725934c4f0a7587258ad3.exe",1: >"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\x.vbs"
      2⤵
      • Drops startup file
      PID:2364
    • C:\Users\Admin\AppData\Local\Temp\a343cb9b5dab828a9aac1548dbd7c2327ce01cde195725934c4f0a7587258ad3.exe
      C:\Users\Admin\AppData\Local\Temp\a343cb9b5dab828a9aac1548dbd7c2327ce01cde195725934c4f0a7587258ad3.exe
      2⤵
      • Drops file in Program Files directory
      PID:296

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

  • C:\$Recycle.Bin\S-1-5-21-1298544033-3225604241-2703760938-1000\desktop.ini.tmp

    Filesize

    1.2MB

    MD5

    0ce545ce0c6aca53d54042f8d29a3f28

    SHA1

    2f0223c3a04a7a98c78142ccd147af83774019ec

    SHA256

    921052210cb50eb65aca4f58b9172cab5ab717f4232f74e1bd47b65c5e67a592

    SHA512

    28d483502149b546b71358fdc5e23b4d75df2606c92f528876ddcf513ace5021d4af60077fe86483c9cfc543d8db5257eeab02a9e22ee443ebe5bdee695b8fa9

  • C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\Office64WW.xml.tmp

    Filesize

    1.2MB

    MD5

    fa4a589ec591548c175918b860458ff3

    SHA1

    e0b6ab8008559b4f74f0c536506da3255458a31d

    SHA256

    ee883c57d5fb639ba32f33c65e05df2a480f0e492f9a6ee73edda91e2b6ddcb3

    SHA512

    8875b426586dee732228087c7e6a22ba81c72b96096af0d21afa30c39e698e23d7c3604a72d722831e1d407bb64e27118c3807ec324b2b7fcea78911aecce343

  • memory/296-18-0x0000000000400000-0x0000000000658000-memory.dmp

    Filesize

    2.3MB

  • memory/296-20-0x0000000000400000-0x0000000000658000-memory.dmp

    Filesize

    2.3MB

  • memory/296-84-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/296-8-0x0000000000400000-0x0000000000658000-memory.dmp

    Filesize

    2.3MB

  • memory/296-10-0x0000000000400000-0x0000000000658000-memory.dmp

    Filesize

    2.3MB

  • memory/296-12-0x0000000000400000-0x0000000000658000-memory.dmp

    Filesize

    2.3MB

  • memory/296-14-0x0000000000400000-0x0000000000658000-memory.dmp

    Filesize

    2.3MB

  • memory/296-16-0x0000000000400000-0x0000000000658000-memory.dmp

    Filesize

    2.3MB

  • memory/296-2-0x0000000000300000-0x0000000000400000-memory.dmp

    Filesize

    1024KB

  • memory/296-6-0x0000000000400000-0x0000000000658000-memory.dmp

    Filesize

    2.3MB

  • memory/296-22-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/296-24-0x0000000000400000-0x0000000000658000-memory.dmp

    Filesize

    2.3MB

  • memory/296-27-0x0000000000400000-0x0000000000658000-memory.dmp

    Filesize

    2.3MB

  • memory/296-3-0x0000000000400000-0x0000000000658000-memory.dmp

    Filesize

    2.3MB

  • memory/296-29-0x0000000000400000-0x0000000000658000-memory.dmp

    Filesize

    2.3MB

  • memory/296-31-0x0000000000400000-0x0000000000658000-memory.dmp

    Filesize

    2.3MB

  • memory/296-32-0x0000000000400000-0x0000000000658000-memory.dmp

    Filesize

    2.3MB

  • memory/2864-30-0x0000000000400000-0x000000000046E000-memory.dmp

    Filesize

    440KB

  • memory/2864-0-0x0000000000400000-0x000000000046E000-memory.dmp

    Filesize

    440KB

  • memory/2864-5-0x0000000001E40000-0x0000000001EAE000-memory.dmp

    Filesize

    440KB