Analysis

  • max time kernel
    31s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20230621-en
  • resource tags

    arch:x64arch:x86image:win7-20230621-enlocale:en-usos:windows7-x64system
  • submitted
    01-07-2023 06:46

General

  • Target

    0ddb866d33fa7277ea51dbaadd197e08318d1c6cd524c352ecb325cad85b82ba.exe

  • Size

    1.6MB

  • MD5

    58f5d3f738283351db8a2dbafb50be24

  • SHA1

    9c18d5b5957ecf187fb5a2e68a6868a8cd719265

  • SHA256

    0ddb866d33fa7277ea51dbaadd197e08318d1c6cd524c352ecb325cad85b82ba

  • SHA512

    80bbf70fc808c593f1b9c58d11d2d32624040917ae54d0c0eb577bde522a1bb1b914c8578a811743bcbc2dbe62a0b8609cc65093d81ca296662e33c71913e3d0

  • SSDEEP

    24576:Di2Q9NXw2/wPOjdGxY2rqkqjVnlqud+/2P+A+ZecdyFoBkkAnexMrdgL/:mTq24GjdGSiqkqXfd+/9AqYanieKd

Score
10/10

Malware Config

Extracted

Family

stealerium

C2

https://discord.com/api/webhooks/1122279032260665414/W-unCHniD2YI670Bytn7FIpY-nux43_owoRzlVZOux3NvAnntnyH_9eSHWkJsi-nQBDo

Signatures

  • Stealerium

    An open source info stealer written in C# first seen in May 2022.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Enumerates physical storage devices 1 TTPs

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

  • Delays execution with timeout.exe 1 IoCs
  • Kills process with taskkill 1 IoCs
  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0ddb866d33fa7277ea51dbaadd197e08318d1c6cd524c352ecb325cad85b82ba.exe
    "C:\Users\Admin\AppData\Local\Temp\0ddb866d33fa7277ea51dbaadd197e08318d1c6cd524c352ecb325cad85b82ba.exe"
    1⤵
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1944
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp4EFB.tmp.bat
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1152
      • C:\Windows\SysWOW64\chcp.com
        chcp 65001
        3⤵
          PID:1460
        • C:\Windows\SysWOW64\taskkill.exe
          TaskKill /F /IM 1944
          3⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:1236
        • C:\Windows\SysWOW64\timeout.exe
          Timeout /T 2 /Nobreak
          3⤵
          • Delays execution with timeout.exe
          PID:1348

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmp4EFB.tmp.bat

      Filesize

      57B

      MD5

      444125de48adc3e444ffe871d8d37d13

      SHA1

      839da72688e122f4bcd58a03e804b4956711da7b

      SHA256

      b7b338c6a17ab9cacea9819782d6594c32d5f6235d514fbe4fb3496e27186deb

      SHA512

      a98429e6699562c6395fb01aa789f9b933f940de906652f6a3a2192fcf2cb117cfec10eec69eb470994506b4314df0e76c578b32e8aa7dc2d886eb3a8a43370c

    • memory/1944-54-0x0000000000D90000-0x0000000000F22000-memory.dmp

      Filesize

      1.6MB

    • memory/1944-55-0x0000000004CE0000-0x0000000004D20000-memory.dmp

      Filesize

      256KB

    • memory/1944-58-0x0000000004CE0000-0x0000000004D20000-memory.dmp

      Filesize

      256KB