Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-03-2024 02:59

General

  • Target

    fe83d5e9847e8cf0cfa719135a98734ed8e89c55c2c328f446b4a983d4c92c0e.exe

  • Size

    2.8MB

  • MD5

    388a85182dd3fe6c6e9d96617d8a8149

  • SHA1

    8685e212db44fbf7df85e6e12b9ac973418e33b5

  • SHA256

    fe83d5e9847e8cf0cfa719135a98734ed8e89c55c2c328f446b4a983d4c92c0e

  • SHA512

    831c79bbf936a400078c39d90e60ca0753c9e8bdffc5872096d9171362c0fdeef06d7433316385b827595c0c6c0e1422aaa53b50f5ee4967778db74c2ffca1a2

  • SSDEEP

    49152:rUbVXnEoeQV8oI3BosehgnxlEstphJyle5Hdfd1HtYA3Fr:rUZ8CenXyiHdfnHtr1r

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.sturmsgroup.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    y[/wk46uE}y(|Xn[

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Detect ZGRat V1 34 IoCs
  • ZGRat

    ZGRat is remote access trojan written in C#.

  • Detect packed .NET executables. Mostly AgentTeslaV4. 1 IoCs
  • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 1 IoCs
  • Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion 1 IoCs
  • Detects executables referencing Windows vault credential objects. Observed in infostealers 1 IoCs
  • Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 1 IoCs
  • Detects executables referencing many email and collaboration clients. Observed in information stealers 1 IoCs
  • Detects executables referencing many file transfer clients. Observed in information stealers 1 IoCs
  • 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.

  • Looks up external IP address via web service 1 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 3 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fe83d5e9847e8cf0cfa719135a98734ed8e89c55c2c328f446b4a983d4c92c0e.exe
    "C:\Users\Admin\AppData\Local\Temp\fe83d5e9847e8cf0cfa719135a98734ed8e89c55c2c328f446b4a983d4c92c0e.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3840
    • C:\Users\Admin\AppData\Local\Temp\fe83d5e9847e8cf0cfa719135a98734ed8e89c55c2c328f446b4a983d4c92c0e.exe
      "C:\Users\Admin\AppData\Local\Temp\fe83d5e9847e8cf0cfa719135a98734ed8e89c55c2c328f446b4a983d4c92c0e.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:756

Network

MITRE ATT&CK Matrix ATT&CK v13

Credential Access

Unsecured Credentials

4
T1552

Credentials In Files

3
T1552.001

Credentials in Registry

1
T1552.002

Collection

Data from Local System

4
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\fe83d5e9847e8cf0cfa719135a98734ed8e89c55c2c328f446b4a983d4c92c0e.exe.log
    Filesize

    716B

    MD5

    4f9cc40b2bfe17ac6d8f4e67dad23157

    SHA1

    f3a7e90a2af422f14a8913e2cf03cb5b639fdb18

    SHA256

    3be33b92192f6b439c3b03172670dfd25018b775a0de1bde5f1e81e22a49ab20

    SHA512

    d3d7c1b1fc70cbd7cc4ebe8649bee97a33476e4a0bd67928b124685d793b463208b78982ce592d352ae5a351eaef4d96fde3b02e69860a1c63ab0e53a8a5fa94

  • memory/756-4893-0x0000000074BC0000-0x0000000075370000-memory.dmp
    Filesize

    7.7MB

  • memory/756-4895-0x0000000000400000-0x0000000000442000-memory.dmp
    Filesize

    264KB

  • memory/756-4897-0x0000000005740000-0x00000000057A6000-memory.dmp
    Filesize

    408KB

  • memory/756-4896-0x00000000057C0000-0x00000000057D0000-memory.dmp
    Filesize

    64KB

  • memory/756-4903-0x00000000057C0000-0x00000000057D0000-memory.dmp
    Filesize

    64KB

  • memory/756-4902-0x0000000074BC0000-0x0000000075370000-memory.dmp
    Filesize

    7.7MB

  • memory/756-4901-0x0000000007270000-0x000000000727A000-memory.dmp
    Filesize

    40KB

  • memory/756-4900-0x0000000006FA0000-0x000000000703C000-memory.dmp
    Filesize

    624KB

  • memory/756-4899-0x0000000006EB0000-0x0000000006F00000-memory.dmp
    Filesize

    320KB

  • memory/756-4898-0x0000000006E10000-0x0000000006EA2000-memory.dmp
    Filesize

    584KB

  • memory/3840-38-0x0000000004DB0000-0x0000000004FDA000-memory.dmp
    Filesize

    2.2MB

  • memory/3840-50-0x0000000004DB0000-0x0000000004FDA000-memory.dmp
    Filesize

    2.2MB

  • memory/3840-12-0x0000000004DB0000-0x0000000004FDA000-memory.dmp
    Filesize

    2.2MB

  • memory/3840-14-0x0000000004DB0000-0x0000000004FDA000-memory.dmp
    Filesize

    2.2MB

  • memory/3840-16-0x0000000004DB0000-0x0000000004FDA000-memory.dmp
    Filesize

    2.2MB

  • memory/3840-18-0x0000000004DB0000-0x0000000004FDA000-memory.dmp
    Filesize

    2.2MB

  • memory/3840-20-0x0000000004DB0000-0x0000000004FDA000-memory.dmp
    Filesize

    2.2MB

  • memory/3840-22-0x0000000004DB0000-0x0000000004FDA000-memory.dmp
    Filesize

    2.2MB

  • memory/3840-24-0x0000000004DB0000-0x0000000004FDA000-memory.dmp
    Filesize

    2.2MB

  • memory/3840-26-0x0000000004DB0000-0x0000000004FDA000-memory.dmp
    Filesize

    2.2MB

  • memory/3840-28-0x0000000004DB0000-0x0000000004FDA000-memory.dmp
    Filesize

    2.2MB

  • memory/3840-30-0x0000000004DB0000-0x0000000004FDA000-memory.dmp
    Filesize

    2.2MB

  • memory/3840-32-0x0000000004DB0000-0x0000000004FDA000-memory.dmp
    Filesize

    2.2MB

  • memory/3840-34-0x0000000004DB0000-0x0000000004FDA000-memory.dmp
    Filesize

    2.2MB

  • memory/3840-36-0x0000000004DB0000-0x0000000004FDA000-memory.dmp
    Filesize

    2.2MB

  • memory/3840-8-0x0000000004DB0000-0x0000000004FDA000-memory.dmp
    Filesize

    2.2MB

  • memory/3840-40-0x0000000004DB0000-0x0000000004FDA000-memory.dmp
    Filesize

    2.2MB

  • memory/3840-42-0x0000000004DB0000-0x0000000004FDA000-memory.dmp
    Filesize

    2.2MB

  • memory/3840-44-0x0000000004DB0000-0x0000000004FDA000-memory.dmp
    Filesize

    2.2MB

  • memory/3840-46-0x0000000004DB0000-0x0000000004FDA000-memory.dmp
    Filesize

    2.2MB

  • memory/3840-48-0x0000000004DB0000-0x0000000004FDA000-memory.dmp
    Filesize

    2.2MB

  • memory/3840-10-0x0000000004DB0000-0x0000000004FDA000-memory.dmp
    Filesize

    2.2MB

  • memory/3840-52-0x0000000004DB0000-0x0000000004FDA000-memory.dmp
    Filesize

    2.2MB

  • memory/3840-54-0x0000000004DB0000-0x0000000004FDA000-memory.dmp
    Filesize

    2.2MB

  • memory/3840-56-0x0000000004DB0000-0x0000000004FDA000-memory.dmp
    Filesize

    2.2MB

  • memory/3840-58-0x0000000004DB0000-0x0000000004FDA000-memory.dmp
    Filesize

    2.2MB

  • memory/3840-60-0x0000000004DB0000-0x0000000004FDA000-memory.dmp
    Filesize

    2.2MB

  • memory/3840-62-0x0000000004DB0000-0x0000000004FDA000-memory.dmp
    Filesize

    2.2MB

  • memory/3840-64-0x0000000004DB0000-0x0000000004FDA000-memory.dmp
    Filesize

    2.2MB

  • memory/3840-66-0x0000000004DB0000-0x0000000004FDA000-memory.dmp
    Filesize

    2.2MB

  • memory/3840-3633-0x0000000074BC0000-0x0000000075370000-memory.dmp
    Filesize

    7.7MB

  • memory/3840-4884-0x0000000002790000-0x00000000027A0000-memory.dmp
    Filesize

    64KB

  • memory/3840-4885-0x0000000005400000-0x0000000005401000-memory.dmp
    Filesize

    4KB

  • memory/3840-6-0x0000000004DB0000-0x0000000004FDA000-memory.dmp
    Filesize

    2.2MB

  • memory/3840-4-0x0000000004DB0000-0x0000000004FDA000-memory.dmp
    Filesize

    2.2MB

  • memory/3840-3-0x0000000004DB0000-0x0000000004FDA000-memory.dmp
    Filesize

    2.2MB

  • memory/3840-2-0x0000000004DB0000-0x0000000004FE0000-memory.dmp
    Filesize

    2.2MB

  • memory/3840-1-0x0000000000170000-0x0000000000448000-memory.dmp
    Filesize

    2.8MB

  • memory/3840-0-0x0000000074BC0000-0x0000000075370000-memory.dmp
    Filesize

    7.7MB

  • memory/3840-4886-0x0000000005540000-0x00000000055AC000-memory.dmp
    Filesize

    432KB

  • memory/3840-4887-0x00000000055B0000-0x00000000055FC000-memory.dmp
    Filesize

    304KB

  • memory/3840-4888-0x0000000005E90000-0x0000000006434000-memory.dmp
    Filesize

    5.6MB

  • memory/3840-4889-0x00000000056D0000-0x0000000005724000-memory.dmp
    Filesize

    336KB

  • memory/3840-4894-0x0000000074BC0000-0x0000000075370000-memory.dmp
    Filesize

    7.7MB