General

  • Target

    d040cb03c85c426234634a6d8fa48862

  • Size

    270KB

  • Sample

    231222-sbbtlsghd6

  • MD5

    d040cb03c85c426234634a6d8fa48862

  • SHA1

    693f04b9dd88aeb2346cdab2cf4f1040a10a4169

  • SHA256

    55e3420114a31e386131ea08a7a38871c645080c5b6fb013f3f2cb375e006f8c

  • SHA512

    9d54ba78e5ccfeb06b8a3c46f7f6b561bea290509d6e7f6ac17165c79d88f544c2abaa9a48bad81023348ae4fa9fe1f1a68b8f780f2268367a9397824cbdf0a6

  • SSDEEP

    3072:lQsGHTSB4x2fynILOb8Mwffz7XQl5lpqtqO7SxSeKTeiw7wVqZY4UCvrlxGaL5Q2:esHqxKynWcMfffXwtqVedwMUA95pV

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

      d040cb03c85c426234634a6d8fa48862

    • Size

      270KB

    • MD5

      d040cb03c85c426234634a6d8fa48862

    • SHA1

      693f04b9dd88aeb2346cdab2cf4f1040a10a4169

    • SHA256

      55e3420114a31e386131ea08a7a38871c645080c5b6fb013f3f2cb375e006f8c

    • SHA512

      9d54ba78e5ccfeb06b8a3c46f7f6b561bea290509d6e7f6ac17165c79d88f544c2abaa9a48bad81023348ae4fa9fe1f1a68b8f780f2268367a9397824cbdf0a6

    • SSDEEP

      3072:lQsGHTSB4x2fynILOb8Mwffz7XQl5lpqtqO7SxSeKTeiw7wVqZY4UCvrlxGaL5Q2:esHqxKynWcMfffXwtqVedwMUA95pV

    • 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