Resubmissions

17-01-2021 17:36

210117-g43rpv65tx 10

16-01-2021 21:48

210116-w1b6l8qxm6 10

General

  • Target

    update_0229c0.exe

  • Size

    221KB

  • Sample

    210116-w1b6l8qxm6

  • MD5

    7cffc862f118a28123abc568072e3b10

  • SHA1

    fe24ef3926b8b457c4206a1d0f99f94461fe2db5

  • SHA256

    63e5c2fd84ec09e577c07096928b9c3e53c6341dd75f3b29a536b7ead90d872d

  • SHA512

    1b16e827cfbdaa7947ecbe8197f5d094f34dc75e95895a2afe8d3d2b617eab02928bccc36c6f9329078e39e3e83d8d7a6ffdc16808022c7d979467811d2723b4

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://oversun.monster/upload/

http://oversun.net/upload/

http://dingobossin.com/upload/

http://duda1.monster/upload/

http�//vinder55.monster/upload/

http://jamb2.monster/upload/

rc4.i32
rc4.i32

Targets

    • Target

      update_0229c0.exe

    • Size

      221KB

    • MD5

      7cffc862f118a28123abc568072e3b10

    • SHA1

      fe24ef3926b8b457c4206a1d0f99f94461fe2db5

    • SHA256

      63e5c2fd84ec09e577c07096928b9c3e53c6341dd75f3b29a536b7ead90d872d

    • SHA512

      1b16e827cfbdaa7947ecbe8197f5d094f34dc75e95895a2afe8d3d2b617eab02928bccc36c6f9329078e39e3e83d8d7a6ffdc16808022c7d979467811d2723b4

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • Executes dropped EXE

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Deletes itself

    • Loads dropped DLL

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Bootkit

1
T1067

Discovery

Query Registry

1
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

1
T1082

Tasks