General

  • Target

    a18c5634a16a2dfb8ae46752ce4e4238.exe

  • Size

    347KB

  • Sample

    240112-s3lswsbdf4

  • MD5

    a18c5634a16a2dfb8ae46752ce4e4238

  • SHA1

    f290033b1dd5137d026c90f9f4056e13b07a02ac

  • SHA256

    e6aa74189e7f0e76c61715f31439a43360b3b66f86e899b3c621c817298623d0

  • SHA512

    94a3793371ff34448d8f372b83edab12a93d380a8d4670a6937090096d8479c4f6e38f0f898d83ddadca12b982fbe0c5a93dc1125223ed9a6765b86676454bc4

  • SSDEEP

    3072:Qnp1z2pL0IOQeXR4j+ygDNkdOnXaXmMd5VITRLdKPo95n:WALxOQkRd3BkdOnXYPFITREwb

Malware Config

Extracted

Family

smokeloader

Botnet

pub1

Extracted

Family

smokeloader

Version

2020

C2

http://host-file-host6.com/

http://host-host-file8.com/

rc4.i32
rc4.i32

Targets

    • Target

      a18c5634a16a2dfb8ae46752ce4e4238.exe

    • Size

      347KB

    • MD5

      a18c5634a16a2dfb8ae46752ce4e4238

    • SHA1

      f290033b1dd5137d026c90f9f4056e13b07a02ac

    • SHA256

      e6aa74189e7f0e76c61715f31439a43360b3b66f86e899b3c621c817298623d0

    • SHA512

      94a3793371ff34448d8f372b83edab12a93d380a8d4670a6937090096d8479c4f6e38f0f898d83ddadca12b982fbe0c5a93dc1125223ed9a6765b86676454bc4

    • SSDEEP

      3072:Qnp1z2pL0IOQeXR4j+ygDNkdOnXaXmMd5VITRLdKPo95n:WALxOQkRd3BkdOnXYPFITREwb

    • BetaBot

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

    • Modifies firewall policy service

    • Modifies security service

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • Disables taskbar notifications via registry modification

    • Disables use of System Restore points

    • Looks for VMWare services registry key.

    • Sets file execution options in registry

    • Sets service image path in registry

    • 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.

    • Deletes itself

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Checks for any installed AV software in registry

    • Checks whether UAC is enabled

    • Drops desktop.ini file(s)

    • Maps connected drives based on registry

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

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks