Analysis

  • max time kernel
    121s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    17-04-2021 11:46

General

  • Target

    Items Needed.exe

  • Size

    28KB

  • MD5

    75b25644240fbdecc8e60f097c93a6ef

  • SHA1

    c32bf2a40047abf6b4a144e7a8d6e6d1b45afb88

  • SHA256

    4988d73d2134785c5c09a123189e395d6637112537bc37a25aeb9c0cb6a21973

  • SHA512

    4555d57fad07b178d655ccc9a52fa9bbfd405d82a74f2429b5178de7af201fc81360fcd764ff886b80a03ff78abb0f5ea9e54891fd32e84096dac9ef6b606f37

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    webmail.jumatsedekah.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    YV1i#[N*@-6-

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 IoCs
  • 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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 14 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.

  • Program crash 1 IoCs
  • Delays execution with timeout.exe 1 IoCs
  • Modifies system certificate store 2 TTPs 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Items Needed.exe
    "C:\Users\Admin\AppData\Local\Temp\Items Needed.exe"
    1⤵
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:368
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1632
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • Delays execution with timeout.exe
        PID:896
    • C:\Users\Admin\AppData\Local\Temp\Items Needed.exe
      "C:\Users\Admin\AppData\Local\Temp\Items Needed.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:1424
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 368 -s 1748
      2⤵
      • Program crash
      PID:556

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/368-59-0x0000000001200000-0x0000000001201000-memory.dmp

    Filesize

    4KB

  • memory/368-61-0x00000000003D0000-0x00000000003D1000-memory.dmp

    Filesize

    4KB

  • memory/368-62-0x00000000005C0000-0x0000000000614000-memory.dmp

    Filesize

    336KB

  • memory/556-69-0x0000000000000000-mapping.dmp

  • memory/896-64-0x0000000000000000-mapping.dmp

  • memory/1424-65-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1424-66-0x00000000004374BE-mapping.dmp

  • memory/1424-67-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1424-70-0x0000000004A40000-0x0000000004A41000-memory.dmp

    Filesize

    4KB

  • memory/1424-71-0x0000000004A41000-0x0000000004A42000-memory.dmp

    Filesize

    4KB

  • memory/1632-63-0x0000000000000000-mapping.dmp