General

  • Target

    77166d642dc07406dfc0471f6898222b

  • Size

    265KB

  • Sample

    231222-htaddsdcd4

  • MD5

    77166d642dc07406dfc0471f6898222b

  • SHA1

    b4181a9f267d2f00db827448b8a655ccfb94d14b

  • SHA256

    c7b9a3eabcc6c0e1f8093a1e6095928dbd4790ce353bc4d1a9a1239dbba13864

  • SHA512

    0bd5de0da0905f2dde7f9af34abeaba666dd7ba2e404cd63d24239dd6f6a582c02f98e47d6e209a4d73fc2be4201c01167fb9aadc81126be47fcd88a4c9e6240

  • SSDEEP

    6144:xDFPFz9lugmDKmPDscGhMjJYTzN4QlmhHKpp:/t9EgmDJDsccMj+vKa

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://varmisende.com/upload/

http://fernandomayol.com/upload/

http://nextlytm.com/upload/

http://people4jan.com/upload/

http://asfaltwerk.com/upload/

rc4.i32
rc4.i32

Targets

    • Target

      77166d642dc07406dfc0471f6898222b

    • Size

      265KB

    • MD5

      77166d642dc07406dfc0471f6898222b

    • SHA1

      b4181a9f267d2f00db827448b8a655ccfb94d14b

    • SHA256

      c7b9a3eabcc6c0e1f8093a1e6095928dbd4790ce353bc4d1a9a1239dbba13864

    • SHA512

      0bd5de0da0905f2dde7f9af34abeaba666dd7ba2e404cd63d24239dd6f6a582c02f98e47d6e209a4d73fc2be4201c01167fb9aadc81126be47fcd88a4c9e6240

    • SSDEEP

      6144:xDFPFz9lugmDKmPDscGhMjJYTzN4QlmhHKpp:/t9EgmDJDsccMj+vKa

    • 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

    • 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.

    • 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)

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Matrix ATT&CK v13

Execution

Scheduled Task/Job

1
T1053

Persistence

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Boot or Logon Autostart Execution

3
T1547

Registry Run Keys / Startup Folder

3
T1547.001

Scheduled Task/Job

1
T1053

Privilege Escalation

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Boot or Logon Autostart Execution

3
T1547

Registry Run Keys / Startup Folder

3
T1547.001

Scheduled Task/Job

1
T1053

Defense Evasion

Modify Registry

8
T1112

Discovery

Query Registry

5
T1012

System Information Discovery

5
T1082

Software Discovery

1
T1518

Security Software Discovery

1
T1518.001

Peripheral Device Discovery

1
T1120

Impact

Inhibit System Recovery

1
T1490

Tasks