General

  • Target

    CFDI_826271_53535.exe

  • Size

    894KB

  • Sample

    220713-hbsr1sahgl

  • MD5

    f89a4c9d373e3c928bc405d56a496850

  • SHA1

    de58bf97363c74d83249df1ec2f1e9d62a2101d9

  • SHA256

    c040a2c32938707e1579fecce89e3c4fa04d019a467f642dd2bb18bab35bf99d

  • SHA512

    eb02dcd476e67db8ec0d9bfde5698967c657bbc6cb55973445c565cd10999772b8ba18ecacd85c36bb88ac81898a0d34f2509cf6e2a954c890ffc5c07421d514

Malware Config

Targets

    • Target

      CFDI_826271_53535.exe

    • Size

      894KB

    • MD5

      f89a4c9d373e3c928bc405d56a496850

    • SHA1

      de58bf97363c74d83249df1ec2f1e9d62a2101d9

    • SHA256

      c040a2c32938707e1579fecce89e3c4fa04d019a467f642dd2bb18bab35bf99d

    • SHA512

      eb02dcd476e67db8ec0d9bfde5698967c657bbc6cb55973445c565cd10999772b8ba18ecacd85c36bb88ac81898a0d34f2509cf6e2a954c890ffc5c07421d514

    • BetaBot

      Beta Bot is a Trojan that infects computers and disables Antivirus.

    • Modifies firewall policy service

    • Executes dropped EXE

    • Sets file execution options in registry

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

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

    • Loads dropped DLL

    • Adds Run key to start application

    • Checks whether UAC is enabled

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

2
T1060

Hidden Files and Directories

2
T1158

Defense Evasion

Modify Registry

6
T1112

Hidden Files and Directories

2
T1158

Discovery

Query Registry

4
T1012

System Information Discovery

6
T1082

Tasks