Analysis

  • max time kernel
    126s
  • max time network
    314s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    17-10-2021 11:34

General

  • Target

    Payment_Advice.exe

  • Size

    406KB

  • MD5

    6a0b5847e9f478801ed0a8705e0b8639

  • SHA1

    2a6c9497193ff928fd913faec2e71973f09c5e50

  • SHA256

    3c7d808408e9f03adf60b3f467a0e99ebaef329e2e11296a5a4968939d69b5b5

  • SHA512

    c3016e04088d7d8188ef00f8b324cfbff93770219eee425a9d0b454d69a1bcac8868b55b37e44469664b787f889daefcf966a9736546af62ac0eb8d5d6c19ca9

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.showpiece.trillennium.biz
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    money12345@@@@@

Signatures

  • AgentTesla

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

  • AgentTesla Payload 2 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.

  • 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.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Payment_Advice.exe
    "C:\Users\Admin\AppData\Local\Temp\Payment_Advice.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2116
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ziDbEzuGUWVWf" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5F91.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2780
    • C:\Users\Admin\AppData\Local\Temp\Payment_Advice.exe
      "C:\Users\Admin\AppData\Local\Temp\Payment_Advice.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:1764

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Credential Access

Credentials in Files

3
T1081

Discovery

System Information Discovery

1
T1082

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

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

    0c2899d7c6746f42d5bbe088c777f94c

    SHA1

    622f66c5f7a3c91b28a9f43ce7c6cabadbf514f1

    SHA256

    5b0b99740cadaeff7b9891136644b396941547e20cc7eea646560d0dad5a5458

    SHA512

    ab7a3409ed4b6ca00358330a3aa4ef6de7d81eb21a5e24bb629ef6a7c7c4e2a70ca3accfbc989ed6e495fdb8eb6203a26d6f2a37b2a5809af4276af375b49078

  • memory/1764-125-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1764-137-0x0000000001801000-0x0000000001802000-memory.dmp
    Filesize

    4KB

  • memory/1764-134-0x00000000063B0000-0x00000000063B1000-memory.dmp
    Filesize

    4KB

  • memory/1764-133-0x0000000001830000-0x0000000001831000-memory.dmp
    Filesize

    4KB

  • memory/1764-132-0x0000000001800000-0x0000000001801000-memory.dmp
    Filesize

    4KB

  • memory/1764-126-0x000000000043767E-mapping.dmp
  • memory/2116-120-0x0000000005520000-0x0000000005A1E000-memory.dmp
    Filesize

    5.0MB

  • memory/2116-123-0x00000000063E0000-0x0000000006438000-memory.dmp
    Filesize

    352KB

  • memory/2116-122-0x0000000006340000-0x0000000006341000-memory.dmp
    Filesize

    4KB

  • memory/2116-121-0x0000000005830000-0x0000000005835000-memory.dmp
    Filesize

    20KB

  • memory/2116-115-0x0000000000CF0000-0x0000000000CF1000-memory.dmp
    Filesize

    4KB

  • memory/2116-119-0x0000000005590000-0x0000000005591000-memory.dmp
    Filesize

    4KB

  • memory/2116-118-0x00000000055C0000-0x00000000055C1000-memory.dmp
    Filesize

    4KB

  • memory/2116-117-0x0000000005A20000-0x0000000005A21000-memory.dmp
    Filesize

    4KB

  • memory/2780-124-0x0000000000000000-mapping.dmp