General

  • Target

    db475bed756ec160e728741bd57b67c2

  • Size

    144KB

  • Sample

    231222-s2f61scbb7

  • MD5

    db475bed756ec160e728741bd57b67c2

  • SHA1

    e95858f6d6df1650948134204ec09a67a0f2f8da

  • SHA256

    a521d18336f5c0b8f1dbaae76cb9d0af9dd064ad40650e9bfb68b4fb7f237243

  • SHA512

    73ae300fb036311bc1a5764b560fdd0b0956bcccc3040b92fef05cf170783923291a216e8d3c1141e0b972bcd28f87dc6723da7427a2c0f067cb858e4f8ee5f1

  • SSDEEP

    3072:bAH0HQcUpAhRaPELmnt6xd15koHD7e/L:bfRhRaPELOXiD7oL

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

      db475bed756ec160e728741bd57b67c2

    • Size

      144KB

    • MD5

      db475bed756ec160e728741bd57b67c2

    • SHA1

      e95858f6d6df1650948134204ec09a67a0f2f8da

    • SHA256

      a521d18336f5c0b8f1dbaae76cb9d0af9dd064ad40650e9bfb68b4fb7f237243

    • SHA512

      73ae300fb036311bc1a5764b560fdd0b0956bcccc3040b92fef05cf170783923291a216e8d3c1141e0b972bcd28f87dc6723da7427a2c0f067cb858e4f8ee5f1

    • SSDEEP

      3072:bAH0HQcUpAhRaPELmnt6xd15koHD7e/L:bfRhRaPELOXiD7oL

    • 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.

    • 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)

    • 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

6
T1012

System Information Discovery

7
T1082

Software Discovery

1
T1518

Security Software Discovery

1
T1518.001

Peripheral Device Discovery

1
T1120

Impact

Inhibit System Recovery

1
T1490

Tasks