Analysis

  • max time kernel
    131s
  • max time network
    160s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 01:30

General

  • Target

    Fwd WRONG BANK DETAIL'S.exe

  • Size

    430KB

  • MD5

    dd5e8f55df6577549de4bc6f120fbdc1

  • SHA1

    13010fa3bd4c7e1f7852d579c10505a40afa4bab

  • SHA256

    f791e41279744779b60a12e8e88ab15dd254c89acfb75ed5a3772053f8831f63

  • SHA512

    1458eff2920a357a6545425931688b2b4e37b034134d37bd697cafa06629e1ed34f4d41516943306b0241c4e90a9549644ba5af50b6f257a7c393705b612f676

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.opporajasthan.in
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Systems@1234

Signatures

  • AgentTesla

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

  • AgentTesla Payload 1 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs
  • Looks for VMWare Tools registry key 2 TTPs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Fwd WRONG BANK DETAIL'S.exe
    "C:\Users\Admin\AppData\Local\Temp\Fwd WRONG BANK DETAIL'S.exe"
    1⤵
    • Checks BIOS information in registry
    • Checks computer location settings
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5108
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fYqcFswDzCAc" /XML "C:\Users\Admin\AppData\Local\Temp\tmp413F.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:216
    • C:\Users\Admin\AppData\Local\Temp\Fwd WRONG BANK DETAIL'S.exe
      "{path}"
      2⤵
        PID:4936
      • C:\Users\Admin\AppData\Local\Temp\Fwd WRONG BANK DETAIL'S.exe
        "{path}"
        2⤵
        • Accesses Microsoft Outlook profiles
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • outlook_office_path
        • outlook_win_path
        PID:3744

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Fwd WRONG BANK DETAIL'S.exe.log

      Filesize

      1KB

      MD5

      e08f822522c617a40840c62e4b0fb45e

      SHA1

      ae516dca4da5234be6676d3f234c19ec55725be7

      SHA256

      bd9d5e9f7fe6fcff17d873555d4077d15f7d6cdda1183e7f7d278b735ffe1fd7

      SHA512

      894a7fb7bbc18ac6ba13378f58a7db80ad00d6080be9a66b01cae8e23e41d9d2d4cd53c1e20669356b73590c8a3ebfda4bdda3258f81240db56c4a81b7313fe4

    • C:\Users\Admin\AppData\Local\Temp\tmp413F.tmp

      Filesize

      1KB

      MD5

      b3bb5f31ec02fd0833b031aa5f7662fa

      SHA1

      0b8659b10e5910b18710fecca48d421dade1d10a

      SHA256

      84d20239ee841f5e1810133cef11f367d035a5e6c081b1bc1e680755f7e786c8

      SHA512

      6b74baa8013239d4ddbea238ff41adf9cb97bc1e6b2fbc75854ebb97cba49cbf1e09ba5784edd38d6a0e0d48107ea495a7a2db2e03be0a85f6c77670e51533a6

    • memory/216-136-0x0000000000000000-mapping.dmp

    • memory/3744-139-0x0000000000000000-mapping.dmp

    • memory/3744-140-0x0000000000400000-0x000000000044C000-memory.dmp

      Filesize

      304KB

    • memory/3744-142-0x00000000068D0000-0x0000000006920000-memory.dmp

      Filesize

      320KB

    • memory/4936-138-0x0000000000000000-mapping.dmp

    • memory/5108-134-0x0000000007DB0000-0x0000000007E4C000-memory.dmp

      Filesize

      624KB

    • memory/5108-135-0x000000000DD70000-0x000000000DDD6000-memory.dmp

      Filesize

      408KB

    • memory/5108-133-0x00000000058E0000-0x00000000058EA000-memory.dmp

      Filesize

      40KB

    • memory/5108-132-0x0000000005840000-0x00000000058D2000-memory.dmp

      Filesize

      584KB

    • memory/5108-130-0x0000000000E20000-0x0000000000E92000-memory.dmp

      Filesize

      456KB

    • memory/5108-131-0x0000000005DF0000-0x0000000006394000-memory.dmp

      Filesize

      5.6MB