Analysis

  • max time kernel
    122s
  • max time network
    139s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    09-11-2020 19:37

General

  • Target

    RC00564C2802639CLGHTL.exe

  • Size

    512KB

  • MD5

    c608f248429afc058f2a9b0ba3a3e98f

  • SHA1

    46b3668dc85850542e96bab175a4c23d34d1155e

  • SHA256

    8d47f598292fe9256f28a9b23751612ba420e885d9cf09fb8d389fb2b53ea5ac

  • SHA512

    7770b281d9d6ef400d476cf78c95e6cc192b2842d7628354df25223e1d45056f60aa11ae22ea0766552eb75cc91c24b79330c8c70fb77b34e3cc83651443040a

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    sologlobal@yandex.com
  • Password:
    amblessed22

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • CoreEntity .NET Packer 1 IoCs

    A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

  • AgentTesla Payload 2 IoCs
  • rezer0 1 IoCs

    Detects ReZer0, a packer with multiple versions used in various campaigns.

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\RC00564C2802639CLGHTL.exe
    "C:\Users\Admin\AppData\Local\Temp\RC00564C2802639CLGHTL.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1272
    • C:\Users\Admin\AppData\Local\Temp\RC00564C2802639CLGHTL.exe
      "{path}"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2648
      • C:\Windows\SysWOW64\netsh.exe
        "netsh" wlan show profile
        3⤵
          PID:2592

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Credential Access

    Credentials in Files

    3
    T1081

    Collection

    Data from Local System

    3
    T1005

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\RC00564C2802639CLGHTL.exe.log
      MD5

      b4f7a6a57cb46d94b72410eb6a6d45a9

      SHA1

      69f3596ffa027202d391444b769ceea0ae14c5f7

      SHA256

      23994ebe221a48ea16ebad51ae0d4b47ccd415ae10581f9405e588d4f6c2523b

      SHA512

      be6da516e54c3a5b33ac2603137a2f8cf8445ff5961dd266faedf3627bae8979953d7ef305538df0151c609917a5b99bf5d023bdd32de50fd5c723950f90db5c

    • memory/1272-7-0x000000000AE90000-0x000000000AEE1000-memory.dmp
      Filesize

      324KB

    • memory/1272-1-0x0000000000630000-0x0000000000631000-memory.dmp
      Filesize

      4KB

    • memory/1272-4-0x0000000007590000-0x0000000007591000-memory.dmp
      Filesize

      4KB

    • memory/1272-5-0x0000000007500000-0x0000000007501000-memory.dmp
      Filesize

      4KB

    • memory/1272-6-0x0000000002A10000-0x0000000002A13000-memory.dmp
      Filesize

      12KB

    • memory/1272-0-0x0000000073C50000-0x000000007433E000-memory.dmp
      Filesize

      6.9MB

    • memory/1272-8-0x000000000AF90000-0x000000000AF91000-memory.dmp
      Filesize

      4KB

    • memory/1272-3-0x00000000079F0000-0x00000000079F1000-memory.dmp
      Filesize

      4KB

    • memory/2592-19-0x0000000000000000-mapping.dmp
    • memory/2648-9-0x0000000000400000-0x0000000000450000-memory.dmp
      Filesize

      320KB

    • memory/2648-12-0x0000000073C50000-0x000000007433E000-memory.dmp
      Filesize

      6.9MB

    • memory/2648-17-0x0000000005450000-0x0000000005451000-memory.dmp
      Filesize

      4KB

    • memory/2648-18-0x0000000005F60000-0x0000000005F61000-memory.dmp
      Filesize

      4KB

    • memory/2648-10-0x000000000044AA9E-mapping.dmp