General

  • Target

    a.exe

  • Size

    85KB

  • Sample

    231130-1m6gcsbb94

  • MD5

    f4fdac362f860520d28385d92c288a7c

  • SHA1

    9d7add3ef8a94821eff53b9f3b6634a204248a08

  • SHA256

    bb86852cf19f43f30561b6deb1f31735bebe157fcecdc74f5b7ba453c253b367

  • SHA512

    097c06c9ae982308bd80be0d4d9c4bf439005f18861c49d662482dd30acdb52ca413e332e65899d5c058df681185cf0ce4bbf6e7a2ac40de75ed2cd4ba2acf6c

  • SSDEEP

    1536:tKC9T1+3phJnoHt3DU5zPHTLSG/raJtVfNfsCZU8rzfBPgH+U391ChsndEg3:tG/1HTba0ClXR8AsnP

Malware Config

Extracted

Family

xworm

C2

goofyah-26004.portmap.host:26004

Attributes
  • Install_directory

    %AppData%

  • install_file

    GVClientV4.exe

Targets

    • Target

      a.exe

    • Size

      85KB

    • MD5

      f4fdac362f860520d28385d92c288a7c

    • SHA1

      9d7add3ef8a94821eff53b9f3b6634a204248a08

    • SHA256

      bb86852cf19f43f30561b6deb1f31735bebe157fcecdc74f5b7ba453c253b367

    • SHA512

      097c06c9ae982308bd80be0d4d9c4bf439005f18861c49d662482dd30acdb52ca413e332e65899d5c058df681185cf0ce4bbf6e7a2ac40de75ed2cd4ba2acf6c

    • SSDEEP

      1536:tKC9T1+3phJnoHt3DU5zPHTLSG/raJtVfNfsCZU8rzfBPgH+U391ChsndEg3:tG/1HTba0ClXR8AsnP

    • Contains code to disable Windows Defender

      A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

    • Detect Xworm Payload

    • XenArmor Suite

      XenArmor is as suite of password recovery tools for various application.

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Disables RegEdit via registry modification

    • Disables Task Manager via registry modification

    • ACProtect 1.3x - 1.4x DLL software

      Detects file using ACProtect software.

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads local data of messenger clients

      Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Accesses Microsoft Outlook accounts

    • Adds Run key to start application

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

MITRE ATT&CK Matrix ATT&CK v13

Execution

Scheduled Task/Job

1
T1053

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Defense Evasion

Modify Registry

1
T1112

Credential Access

Unsecured Credentials

4
T1552

Credentials In Files

4
T1552.001

Discovery

System Information Discovery

2
T1082

Query Registry

2
T1012

Collection

Data from Local System

4
T1005

Email Collection

1
T1114

Tasks