General

  • Target

    file.exe

  • Size

    204KB

  • Sample

    240115-mhmxkaeagq

  • MD5

    4a6c5ebd678fce81e4bceea1fac6a476

  • SHA1

    1b42eee9f4534c37e7f674ed0825dcfceca48a66

  • SHA256

    5471697f35a07a9fd686d85d2381e9c5d9c8ea863757e4e4a943ef168775a4c7

  • SHA512

    8ecf2672f538fd778f0f06da81d2dccf0d9e0bdb7b66699f993ad00095046523ccbfba23041fc66a8317274f33324b9ee3c0e1911883f6a976ae969a1843317f

  • SSDEEP

    3072:6mfHB/kLaZdXUNc8iirJiM21K7uthv1ejSbxJ1zRlH91SNBN7RDxaIp+cmH:6mfHiclVPv1wSbx/zRldIxQco

Malware Config

Extracted

Family

smokeloader

Botnet

t100

Extracted

Family

smokeloader

Version

2020

C2

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

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

rc4.i32
rc4.i32

Targets

    • Target

      file.exe

    • Size

      204KB

    • MD5

      4a6c5ebd678fce81e4bceea1fac6a476

    • SHA1

      1b42eee9f4534c37e7f674ed0825dcfceca48a66

    • SHA256

      5471697f35a07a9fd686d85d2381e9c5d9c8ea863757e4e4a943ef168775a4c7

    • SHA512

      8ecf2672f538fd778f0f06da81d2dccf0d9e0bdb7b66699f993ad00095046523ccbfba23041fc66a8317274f33324b9ee3c0e1911883f6a976ae969a1843317f

    • SSDEEP

      3072:6mfHB/kLaZdXUNc8iirJiM21K7uthv1ejSbxJ1zRlH91SNBN7RDxaIp+cmH:6mfHiclVPv1wSbx/zRldIxQco

    • 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