Analysis

  • max time kernel
    142s
  • max time network
    133s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    28-06-2024 01:28

General

  • Target

    76f267de8fd5fa4744fb8294ee9a4765afeba03b36244527feca60a32df155af.exe

  • Size

    873KB

  • MD5

    a37f4e7d2f3ac6c995f1986fcc9bb48f

  • SHA1

    4e922eccec03db2683096b531801c73227e5ff42

  • SHA256

    76f267de8fd5fa4744fb8294ee9a4765afeba03b36244527feca60a32df155af

  • SHA512

    2959cca5d24deb57910fdd7ae9baae27c3bd0790868730477391e0a7e42fd8aec21225e902c96e46ccd23c2d3b80f8cb9a43d3d4e545fcd2c1d083564d2869ab

  • SSDEEP

    12288:XcIjd3nQIQsk3na+Qin2At4FhujlTdp6c4TgONNER+NzYCzXBl5GgCWr2mS:XcIjUna3in2o4FulG4ONNi+NBNlY2amS

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://mail.hearing-vision.com
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    LILKOOLL14!

Signatures

  • AgentTesla

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

  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Loads dropped DLL 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 NtCreateThreadExHideFromDebugger 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\76f267de8fd5fa4744fb8294ee9a4765afeba03b36244527feca60a32df155af.exe
    "C:\Users\Admin\AppData\Local\Temp\76f267de8fd5fa4744fb8294ee9a4765afeba03b36244527feca60a32df155af.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Drops file in Windows directory
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2964
    • C:\Users\Admin\AppData\Local\Temp\76f267de8fd5fa4744fb8294ee9a4765afeba03b36244527feca60a32df155af.exe
      "C:\Users\Admin\AppData\Local\Temp\76f267de8fd5fa4744fb8294ee9a4765afeba03b36244527feca60a32df155af.exe"
      2⤵
      • Suspicious use of NtCreateThreadExHideFromDebugger
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3008

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

Discovery

System Information Discovery

1
T1082

Collection

Data from Local System

4
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • \Users\Admin\AppData\Local\Temp\nso1A18.tmp\System.dll
    Filesize

    11KB

    MD5

    55a26d7800446f1373056064c64c3ce8

    SHA1

    80256857e9a0a9c8897923b717f3435295a76002

    SHA256

    904fd5481d72f4e03b01a455f848dedd095d0fb17e33608e0d849f5196fb6ff8

    SHA512

    04b8ab7a85c26f188c0a06f524488d6f2ac2884bf107c860c82e94ae12c3859f825133d78338fd2b594dfc48f7dc9888ae76fee786c6252a5c77c88755128a5b

  • memory/2964-25-0x0000000004040000-0x0000000005AB4000-memory.dmp
    Filesize

    26.5MB

  • memory/2964-26-0x0000000077A11000-0x0000000077B12000-memory.dmp
    Filesize

    1.0MB

  • memory/2964-27-0x0000000077A10000-0x0000000077BB9000-memory.dmp
    Filesize

    1.7MB

  • memory/2964-29-0x0000000004040000-0x0000000005AB4000-memory.dmp
    Filesize

    26.5MB

  • memory/2964-31-0x0000000004040000-0x0000000005AB4000-memory.dmp
    Filesize

    26.5MB

  • memory/3008-28-0x0000000077A10000-0x0000000077BB9000-memory.dmp
    Filesize

    1.7MB

  • memory/3008-30-0x00000000004A0000-0x0000000001502000-memory.dmp
    Filesize

    16.4MB

  • memory/3008-32-0x00000000004A0000-0x00000000004E2000-memory.dmp
    Filesize

    264KB