Analysis

  • max time kernel
    112s
  • max time network
    124s
  • platform
    windows10_x64
  • resource
    win10-en-20211014
  • submitted
    25-10-2021 08:09

General

  • Target

    752fc005d190553303f64c0facf5b44c.exe

  • Size

    1.1MB

  • MD5

    752fc005d190553303f64c0facf5b44c

  • SHA1

    331165e04f47e13f5c331bb0b94c8b9e7b40850e

  • SHA256

    a32e674bcf37839c6632ea98bbef365e935a342a1fe746a1658261dd86d65c21

  • SHA512

    57dcb98ca451053ade15e103bf0c3b44bb8158c375b11202e5995a39511f403817b09c75ac67b05f8d99ccd33690c429c43fc69e126f50a28ea883b0c0b88b07

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.xenonaslikno.gr
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Fox#UgJVGN#0X

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 IoCs
  • Executes dropped EXE 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
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\752fc005d190553303f64c0facf5b44c.exe
    "C:\Users\Admin\AppData\Local\Temp\752fc005d190553303f64c0facf5b44c.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4092
    • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
      "C:\Users\Admin\AppData\Local\Temp\\InstallUtil.exe"
      2⤵
      • Executes dropped EXE
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:2972

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

3
T1081

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
    MD5

    91c9ae9c9a17a9db5e08b120e668c74c

    SHA1

    50770954c1ceb0bb6f1d5d3f2de2a0a065773723

    SHA256

    e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

    SHA512

    ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

  • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
    MD5

    91c9ae9c9a17a9db5e08b120e668c74c

    SHA1

    50770954c1ceb0bb6f1d5d3f2de2a0a065773723

    SHA256

    e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

    SHA512

    ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

  • memory/2972-132-0x00000000054E0000-0x00000000059DE000-memory.dmp
    Filesize

    5.0MB

  • memory/2972-124-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/2972-137-0x00000000054E0000-0x00000000059DE000-memory.dmp
    Filesize

    5.0MB

  • memory/2972-134-0x0000000006140000-0x0000000006141000-memory.dmp
    Filesize

    4KB

  • memory/2972-133-0x0000000005620000-0x0000000005621000-memory.dmp
    Filesize

    4KB

  • memory/2972-125-0x000000000043766E-mapping.dmp
  • memory/4092-122-0x0000000005180000-0x0000000005181000-memory.dmp
    Filesize

    4KB

  • memory/4092-123-0x00000000085B0000-0x00000000085BA000-memory.dmp
    Filesize

    40KB

  • memory/4092-118-0x0000000005060000-0x0000000005061000-memory.dmp
    Filesize

    4KB

  • memory/4092-117-0x00000000054A0000-0x00000000054A1000-memory.dmp
    Filesize

    4KB

  • memory/4092-115-0x0000000000700000-0x0000000000701000-memory.dmp
    Filesize

    4KB

  • memory/4092-119-0x00000000051A0000-0x00000000051A1000-memory.dmp
    Filesize

    4KB

  • memory/4092-121-0x0000000004AC0000-0x0000000004AE4000-memory.dmp
    Filesize

    144KB

  • memory/4092-120-0x0000000004FA0000-0x000000000549E000-memory.dmp
    Filesize

    5.0MB