Analysis

  • max time kernel
    102s
  • max time network
    130s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12-06-2024 01:39

General

  • Target

    Shipping Documents PO88900/Shipping Documents PO88900.xlsx.exe

  • Size

    390KB

  • MD5

    9ad1097ef6d23a86d4b9327e54fdc9bc

  • SHA1

    517d09c1d755f08f3c5bf073d87185a801b68907

  • SHA256

    df9e1f7fa8d1badaa7afd42cc3aac4ef5aad3a9973ee71059599325284566e67

  • SHA512

    1ea9293a6931e191b1c63537fc5ea003e8ae98d53242a711769052bf9ba1976def2bb5f7894f85a0da087c0a4354a68474268da77d8438cfbb0a04299df7c955

  • SSDEEP

    6144:nG8/Pl5W2KYbjOrq1NijSchoiEC8IjhJwJpNhCF5qGI3f2nwf0F4eQhrt/bcnAI:n2rgijP7EHEsvNhC7IfBbhrt4T

Malware Config

Extracted

Credentials

  • Protocol:
    ftp
  • Host:
    s4.serv00.com
  • Port:
    21
  • Username:
    f2241_dol
  • Password:
    Doll900#@

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://s4.serv00.com
  • Port:
    21
  • Username:
    f2241_dol
  • Password:
    Doll900#@

Signatures

  • AgentTesla

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

  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • 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
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Shipping Documents PO88900\Shipping Documents PO88900.xlsx.exe
    "C:\Users\Admin\AppData\Local\Temp\Shipping Documents PO88900\Shipping Documents PO88900.xlsx.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:540
    • C:\Users\Admin\AppData\Local\Temp\Shipping Documents PO88900\Shipping Documents PO88900.xlsx.exe
      "C:\Users\Admin\AppData\Local\Temp\Shipping Documents PO88900\Shipping Documents PO88900.xlsx.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:3828

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Shipping Documents PO88900.xlsx.exe.log

    Filesize

    42B

    MD5

    84cfdb4b995b1dbf543b26b86c863adc

    SHA1

    d2f47764908bf30036cf8248b9ff5541e2711fa2

    SHA256

    d8988d672d6915b46946b28c06ad8066c50041f6152a91d37ffa5cf129cc146b

    SHA512

    485f0ed45e13f00a93762cbf15b4b8f996553baa021152fae5aba051e3736bcd3ca8f4328f0e6d9e3e1f910c96c4a9ae055331123ee08e3c2ce3a99ac2e177ce

  • memory/540-0-0x000000007526E000-0x000000007526F000-memory.dmp

    Filesize

    4KB

  • memory/540-1-0x00000000004B0000-0x0000000000516000-memory.dmp

    Filesize

    408KB

  • memory/540-16-0x0000000075260000-0x0000000075A10000-memory.dmp

    Filesize

    7.7MB

  • memory/540-5-0x0000000075260000-0x0000000075A10000-memory.dmp

    Filesize

    7.7MB

  • memory/3828-7-0x0000000075260000-0x0000000075A10000-memory.dmp

    Filesize

    7.7MB

  • memory/3828-6-0x0000000005A20000-0x0000000005FC4000-memory.dmp

    Filesize

    5.6MB

  • memory/3828-8-0x00000000052A0000-0x0000000005306000-memory.dmp

    Filesize

    408KB

  • memory/3828-9-0x0000000075260000-0x0000000075A10000-memory.dmp

    Filesize

    7.7MB

  • memory/3828-12-0x0000000006940000-0x0000000006990000-memory.dmp

    Filesize

    320KB

  • memory/3828-13-0x0000000006A30000-0x0000000006ACC000-memory.dmp

    Filesize

    624KB

  • memory/3828-14-0x0000000006B70000-0x0000000006C02000-memory.dmp

    Filesize

    584KB

  • memory/3828-15-0x0000000006B10000-0x0000000006B1A000-memory.dmp

    Filesize

    40KB

  • memory/3828-2-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/3828-17-0x0000000075260000-0x0000000075A10000-memory.dmp

    Filesize

    7.7MB