Analysis

  • max time kernel
    120s
  • max time network
    120s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    16-04-2021 16:46

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 16 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 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 14 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:3904
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3564
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • Delays execution with timeout.exe
        PID:960
    • 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:3636
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3904 -s 2548
      2⤵
      • Program crash
      PID:1904

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/960-121-0x0000000000000000-mapping.dmp

  • memory/3564-120-0x0000000000000000-mapping.dmp

  • memory/3636-128-0x0000000005170000-0x000000000566E000-memory.dmp

    Filesize

    5.0MB

  • memory/3636-122-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/3636-123-0x00000000004374BE-mapping.dmp

  • memory/3636-129-0x00000000055E0000-0x00000000055E1000-memory.dmp

    Filesize

    4KB

  • memory/3636-130-0x0000000005ED0000-0x0000000005ED1000-memory.dmp

    Filesize

    4KB

  • memory/3636-131-0x00000000065A0000-0x00000000065A1000-memory.dmp

    Filesize

    4KB

  • memory/3636-132-0x0000000006300000-0x0000000006301000-memory.dmp

    Filesize

    4KB

  • memory/3904-118-0x0000000006610000-0x0000000006611000-memory.dmp

    Filesize

    4KB

  • memory/3904-119-0x0000000002C10000-0x0000000002C64000-memory.dmp

    Filesize

    336KB

  • memory/3904-117-0x0000000006070000-0x0000000006071000-memory.dmp

    Filesize

    4KB

  • memory/3904-116-0x0000000005450000-0x0000000005451000-memory.dmp

    Filesize

    4KB

  • memory/3904-114-0x0000000000AB0000-0x0000000000AB1000-memory.dmp

    Filesize

    4KB