Resubmissions

03-02-2023 21:53

230203-1r2c7sef9v 7

03-02-2023 10:36

230203-mnnq2sed54 10

General

  • Target

    TLauncher-2.871-Installer-1.0.6-global.exe

  • Size

    23.6MB

  • Sample

    230203-mnnq2sed54

  • MD5

    7a4472a78d0651e11d20aa08e43cc045

  • SHA1

    aab1d5f80d7399ae2c1982201733be7681d100b1

  • SHA256

    318df7404e6c4d5538a6d31997b95af52bbb8d40caf5553b3cbd9b1bc4f6db96

  • SHA512

    c152c9d21b0615548173dcc61accb1a1afd5b6f98e6ec21f6a7119536397f07a54ad4087669716c3344dd338ce4f24cecf9989d472f65eaa18c87d496f23c681

  • SSDEEP

    393216:gXQLpnUN/n8IPfs/dQETVlOBbpFEj9GZ1GphRqV56Hpk7IXOzDnKI17fyVS:ggLFUp8aHExiTI3qqHp6zvKcfyVS

Malware Config

Targets

    • Target

      TLauncher-2.871-Installer-1.0.6-global.exe

    • Size

      23.6MB

    • MD5

      7a4472a78d0651e11d20aa08e43cc045

    • SHA1

      aab1d5f80d7399ae2c1982201733be7681d100b1

    • SHA256

      318df7404e6c4d5538a6d31997b95af52bbb8d40caf5553b3cbd9b1bc4f6db96

    • SHA512

      c152c9d21b0615548173dcc61accb1a1afd5b6f98e6ec21f6a7119536397f07a54ad4087669716c3344dd338ce4f24cecf9989d472f65eaa18c87d496f23c681

    • SSDEEP

      393216:gXQLpnUN/n8IPfs/dQETVlOBbpFEj9GZ1GphRqV56Hpk7IXOzDnKI17fyVS:ggLFUp8aHExiTI3qqHp6zvKcfyVS

    • BazarBackdoor

      Stealthy backdoor targeting corporate networks, believed to be developed by Trickbot's authors.

    • Bazar/Team9 Backdoor payload

    • Blocklisted process makes network request

    • Disables Task Manager via registry modification

    • Downloads MZ/PE file

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • Registers COM server for autorun

    • UPX packed file

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

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Drops desktop.ini file(s)

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Installs/modifies Browser Helper Object

      BHOs are DLL modules which act as plugins for Internet Explorer.

    • Drops file in System32 directory

    • Sets desktop wallpaper using registry

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Browser Extensions

1
T1176

Defense Evasion

Modify Registry

4
T1112

Install Root Certificate

1
T1130

Discovery

Query Registry

5
T1012

System Information Discovery

5
T1082

Peripheral Device Discovery

1
T1120

Impact

Defacement

1
T1491

Tasks