Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-03-2024 10:57

General

  • Target

    CV Mariana Alvarez.exe

  • Size

    622KB

  • MD5

    467111735472753ad98e8500663b1de7

  • SHA1

    8986442fd28e74c6f55baf354002dd678f73995e

  • SHA256

    b85123da03ee5c76a1a98d7b8a5c56cc07efe444b9cbf9f2c1f8813fa324ce6a

  • SHA512

    892f17af5c873a5e9717c72b1c5c7783536872e89e42663079c9f0848b8a104ad29d231ae7bd4a62d6fd49996ac5fb516dffd058cbe26e5f74ef4cad7306894e

  • SSDEEP

    12288:aa5WDRFksUKQNuqq2QJrK9E8qIr18hrQBQKXXUaHMvA1dmGBLyrN1H80UjHgJ:+HkswdxkrK9E8zrWJcxt9dmKyrN1u

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.flying-fish-cn.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    hkk999@@@

Extracted

Family

agenttesla

Credentials

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.

  • 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 11 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\CV Mariana Alvarez.exe
    "C:\Users\Admin\AppData\Local\Temp\CV Mariana Alvarez.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1696
    • C:\Users\Admin\AppData\Local\Temp\CV Mariana Alvarez.exe
      "C:\Users\Admin\AppData\Local\Temp\CV Mariana Alvarez.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2892

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\CV Mariana Alvarez.exe.log

    Filesize

    1KB

    MD5

    8ec831f3e3a3f77e4a7b9cd32b48384c

    SHA1

    d83f09fd87c5bd86e045873c231c14836e76a05c

    SHA256

    7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

    SHA512

    26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

  • memory/1696-10-0x0000000074B70000-0x0000000075320000-memory.dmp

    Filesize

    7.7MB

  • memory/1696-15-0x0000000074B70000-0x0000000075320000-memory.dmp

    Filesize

    7.7MB

  • memory/1696-3-0x0000000004C40000-0x0000000004CD2000-memory.dmp

    Filesize

    584KB

  • memory/1696-4-0x0000000004DC0000-0x0000000004DD0000-memory.dmp

    Filesize

    64KB

  • memory/1696-5-0x0000000004BF0000-0x0000000004BFA000-memory.dmp

    Filesize

    40KB

  • memory/1696-6-0x0000000004F10000-0x0000000004FAC000-memory.dmp

    Filesize

    624KB

  • memory/1696-7-0x0000000004D80000-0x0000000004D92000-memory.dmp

    Filesize

    72KB

  • memory/1696-11-0x0000000004DC0000-0x0000000004DD0000-memory.dmp

    Filesize

    64KB

  • memory/1696-9-0x00000000079A0000-0x0000000007A22000-memory.dmp

    Filesize

    520KB

  • memory/1696-2-0x00000000051F0000-0x0000000005794000-memory.dmp

    Filesize

    5.6MB

  • memory/1696-8-0x0000000004D90000-0x0000000004D9C000-memory.dmp

    Filesize

    48KB

  • memory/1696-0-0x00000000002F0000-0x0000000000390000-memory.dmp

    Filesize

    640KB

  • memory/1696-1-0x0000000074B70000-0x0000000075320000-memory.dmp

    Filesize

    7.7MB

  • memory/2892-19-0x0000000006650000-0x00000000066A0000-memory.dmp

    Filesize

    320KB

  • memory/2892-17-0x0000000004E00000-0x0000000004E10000-memory.dmp

    Filesize

    64KB

  • memory/2892-16-0x0000000074B70000-0x0000000075320000-memory.dmp

    Filesize

    7.7MB

  • memory/2892-18-0x0000000005110000-0x0000000005176000-memory.dmp

    Filesize

    408KB

  • memory/2892-12-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/2892-20-0x0000000074B70000-0x0000000075320000-memory.dmp

    Filesize

    7.7MB

  • memory/2892-21-0x0000000004E00000-0x0000000004E10000-memory.dmp

    Filesize

    64KB