Analysis

  • max time kernel
    150s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 02:15

General

  • Target

    SOA APRIL.exe

  • Size

    421KB

  • MD5

    dd5f37195ac446c6f7e09321bcb64a63

  • SHA1

    45e979b5abc28b86d3b277b64f8992aec3a4b277

  • SHA256

    1753cdd1b934ad14f3b6a767859c941a2f5a3a734834a9ae2ca5204281b1974c

  • SHA512

    d50d18c69d93ac9b4811aa8a63d0906e795f2d41f05a9e8b3166eda0a7904e7e426c95b3afabed567f78f31b74dfab78cc00e151c403b27d0d838f0d608c081d

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.tolipgoldenplaza.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Golden@#$2019

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.tolipgoldenplaza.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Golden@#$2019

Signatures

  • AgentTesla

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

  • AgentTesla Payload 1 IoCs
  • Disables Task Manager via registry modification
  • Drops file in Drivers directory 1 IoCs
  • 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
  • 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.

  • Modifies registry key 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SOA APRIL.exe
    "C:\Users\Admin\AppData\Local\Temp\SOA APRIL.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2664
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\hojwConhXJP" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFA53.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2732
    • C:\Users\Admin\AppData\Local\Temp\SOA APRIL.exe
      "{path}"
      2⤵
      • Drops file in Drivers directory
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      • outlook_office_path
      • outlook_win_path
      PID:2708
      • C:\Windows\SysWOW64\REG.exe
        REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f
        3⤵
        • Modifies registry key
        PID:1992
      • C:\Windows\SysWOW64\netsh.exe
        "netsh" wlan show profile
        3⤵
          PID:4188

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Execution

    Scheduled Task

    1
    T1053

    Persistence

    Scheduled Task

    1
    T1053

    Privilege Escalation

    Scheduled Task

    1
    T1053

    Defense Evasion

    Modify Registry

    1
    T1112

    Credential Access

    Credentials in Files

    3
    T1081

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    2
    T1082

    Collection

    Data from Local System

    3
    T1005

    Email Collection

    1
    T1114

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmpFA53.tmp
      Filesize

      1KB

      MD5

      3b3a8039a14a2f2308a65a35721db31b

      SHA1

      2989f67780ff0705f2fb10816fa2be5930931596

      SHA256

      e76924f01bf6925efe00c3da49f5bfb5bc88043ac2f99aec902522db646c6d45

      SHA512

      c4b37532c0f8eb4ed13ad607f642ffbbb845f7aa3809710b5b3a305160372a6adbc3f0fe445efc95a421268682ef1586de0abaa15c77433e096d2dac054cdd23

    • memory/1992-140-0x0000000000000000-mapping.dmp
    • memory/2664-133-0x00000000059F0000-0x00000000059FA000-memory.dmp
      Filesize

      40KB

    • memory/2664-130-0x0000000000C40000-0x0000000000CB0000-memory.dmp
      Filesize

      448KB

    • memory/2664-134-0x0000000009160000-0x00000000091FC000-memory.dmp
      Filesize

      624KB

    • memory/2664-132-0x0000000005A30000-0x0000000005AC2000-memory.dmp
      Filesize

      584KB

    • memory/2664-131-0x0000000005E40000-0x00000000063E4000-memory.dmp
      Filesize

      5.6MB

    • memory/2708-137-0x0000000000000000-mapping.dmp
    • memory/2708-138-0x0000000000400000-0x0000000000452000-memory.dmp
      Filesize

      328KB

    • memory/2708-139-0x0000000005F50000-0x0000000005FB6000-memory.dmp
      Filesize

      408KB

    • memory/2708-141-0x0000000006A20000-0x0000000006A70000-memory.dmp
      Filesize

      320KB

    • memory/2732-135-0x0000000000000000-mapping.dmp
    • memory/4188-142-0x0000000000000000-mapping.dmp