Analysis

  • max time kernel
    300s
  • max time network
    300s
  • platform
    windows7_x64
  • resource
    win7-en-20211104
  • submitted
    03-12-2021 16:36

General

  • Target

    Partial Shipment/newp.exe

  • Size

    571KB

  • MD5

    4ee15954d954941e65043fd7abd506db

  • SHA1

    42e2a770d730d6874f40b4f83e885a3c6e737b4b

  • SHA256

    9b78043d9ee5d318e4d5f3fbb0fc07ff1fe364a77673a54e6a39a14c3a8edcd2

  • SHA512

    d37297453b35f295b7d4043199341c7b09e6a3d2f5ee33412ef7dd5c2e6295af1d1eeaee9ef316064dc3da24d15685dad03b70f67afde4e1ca101299c144125c

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.scahe.co.in
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    scaheavy@12345

Signatures

  • AgentTesla

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

  • AgentTesla Payload 4 IoCs
  • Drops file in Drivers directory 1 IoCs
  • Loads dropped DLL 1 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.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 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\Partial Shipment\newp.exe
    "C:\Users\Admin\AppData\Local\Temp\Partial Shipment\newp.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:824
    • C:\Users\Admin\AppData\Local\Temp\Partial Shipment\newp.exe
      "C:\Users\Admin\AppData\Local\Temp\Partial Shipment\newp.exe"
      2⤵
      • Drops file in Drivers directory
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:364

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • \Users\Admin\AppData\Local\Temp\nstC61E.tmp\crjq.dll

    MD5

    97857305466b02ab59a819135d7dfa56

    SHA1

    15f6e7c75441fe69233ae0e66ad14b0ba7d9b612

    SHA256

    edfead1d00980f940a81c530636c15b144888db164cc7160ee7b5d45f69ef48a

    SHA512

    cb4cf82ac333c6fb712914638f13f36b6a41270802357df30bd6806e87591a6d0a39d95ef2eb64ff458ab819a6ab809e896f3232fd5b0a44a289f2a6fcb17b81

  • memory/364-57-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/364-58-0x000000000040188B-mapping.dmp

  • memory/364-60-0x00000000003B0000-0x00000000003E7000-memory.dmp

    Filesize

    220KB

  • memory/364-63-0x00000000047E1000-0x00000000047E2000-memory.dmp

    Filesize

    4KB

  • memory/364-62-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/364-65-0x00000000047E3000-0x00000000047E4000-memory.dmp

    Filesize

    4KB

  • memory/364-64-0x00000000047E2000-0x00000000047E3000-memory.dmp

    Filesize

    4KB

  • memory/364-66-0x00000000047E4000-0x00000000047E5000-memory.dmp

    Filesize

    4KB

  • memory/824-55-0x0000000075C51000-0x0000000075C53000-memory.dmp

    Filesize

    8KB