Analysis

  • max time kernel
    147s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-03-2024 02:25

General

  • Target

    83b34f0f0a0bdbc115ce0d7e44687ce16c35249650c9d242a646a5ed804fa2f1.exe

  • Size

    656KB

  • MD5

    9949c58a8b33cbe0bcda599f0375f658

  • SHA1

    3072f9c9d5f62ab5e8375cb51b6ce796977322dc

  • SHA256

    83b34f0f0a0bdbc115ce0d7e44687ce16c35249650c9d242a646a5ed804fa2f1

  • SHA512

    18949f9fc8092c04b4389b00109ea8d08ddb607d631e29902c9c92798950397453ff123f268f50d52732f6492ac7e22ca8a75091f70f2d1c9503f6e573308c1d

  • SSDEEP

    12288:8H2iNlw0gPsV/68UditxkCOtzigHgYiJO/wwvJyMyXzN5tfd:C1XCcZttqCOtvHxiAVJy/nt

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot7073576997:AAHjVtyF2bgE69UMVGiHWA3fZk0LIdp1j_Y/

Signatures

  • AgentTesla

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

  • Detect packed .NET executables. Mostly AgentTeslaV4. 1 IoCs
  • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 1 IoCs
  • Detects executables packed with SmartAssembly 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 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\83b34f0f0a0bdbc115ce0d7e44687ce16c35249650c9d242a646a5ed804fa2f1.exe
    "C:\Users\Admin\AppData\Local\Temp\83b34f0f0a0bdbc115ce0d7e44687ce16c35249650c9d242a646a5ed804fa2f1.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2992
    • C:\Users\Admin\AppData\Local\Temp\83b34f0f0a0bdbc115ce0d7e44687ce16c35249650c9d242a646a5ed804fa2f1.exe
      "C:\Users\Admin\AppData\Local\Temp\83b34f0f0a0bdbc115ce0d7e44687ce16c35249650c9d242a646a5ed804fa2f1.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1556

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\83b34f0f0a0bdbc115ce0d7e44687ce16c35249650c9d242a646a5ed804fa2f1.exe.log
    Filesize

    1KB

    MD5

    8ec831f3e3a3f77e4a7b9cd32b48384c

    SHA1

    d83f09fd87c5bd86e045873c231c14836e76a05c

    SHA256

    7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

    SHA512

    26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

  • memory/1556-12-0x0000000000400000-0x0000000000440000-memory.dmp
    Filesize

    256KB

  • memory/1556-21-0x00000000057A0000-0x00000000057B0000-memory.dmp
    Filesize

    64KB

  • memory/1556-20-0x0000000074970000-0x0000000075120000-memory.dmp
    Filesize

    7.7MB

  • memory/1556-19-0x0000000006FA0000-0x0000000006FF0000-memory.dmp
    Filesize

    320KB

  • memory/1556-18-0x00000000057B0000-0x0000000005816000-memory.dmp
    Filesize

    408KB

  • memory/1556-17-0x00000000057A0000-0x00000000057B0000-memory.dmp
    Filesize

    64KB

  • memory/1556-16-0x0000000074970000-0x0000000075120000-memory.dmp
    Filesize

    7.7MB

  • memory/2992-10-0x0000000074970000-0x0000000075120000-memory.dmp
    Filesize

    7.7MB

  • memory/2992-9-0x00000000062C0000-0x0000000006342000-memory.dmp
    Filesize

    520KB

  • memory/2992-0-0x0000000000250000-0x00000000002F8000-memory.dmp
    Filesize

    672KB

  • memory/2992-11-0x0000000004F60000-0x0000000004F70000-memory.dmp
    Filesize

    64KB

  • memory/2992-8-0x0000000005000000-0x000000000500C000-memory.dmp
    Filesize

    48KB

  • memory/2992-7-0x0000000004FE0000-0x0000000004FF2000-memory.dmp
    Filesize

    72KB

  • memory/2992-6-0x0000000005010000-0x00000000050AC000-memory.dmp
    Filesize

    624KB

  • memory/2992-15-0x0000000074970000-0x0000000075120000-memory.dmp
    Filesize

    7.7MB

  • memory/2992-5-0x0000000004DA0000-0x0000000004DAA000-memory.dmp
    Filesize

    40KB

  • memory/2992-4-0x0000000004F60000-0x0000000004F70000-memory.dmp
    Filesize

    64KB

  • memory/2992-3-0x0000000004CE0000-0x0000000004D72000-memory.dmp
    Filesize

    584KB

  • memory/2992-2-0x00000000051F0000-0x0000000005794000-memory.dmp
    Filesize

    5.6MB

  • memory/2992-1-0x0000000074970000-0x0000000075120000-memory.dmp
    Filesize

    7.7MB