Resubmissions

12-07-2021 16:55

210712-cvz622xsbj 10

10-07-2021 13:25

210710-pdfh7kft96 10

09-07-2021 23:00

210709-hewxkm1xlj 10

09-07-2021 16:08

210709-5ql27kyjqa 10

09-07-2021 14:08

210709-pt977a4bhe 10

08-07-2021 22:09

210708-3ypfnj5j7x 10

08-07-2021 13:30

210708-4hsk7y9f2x 10

08-07-2021 12:14

210708-8t5f9z9egj 10

Analysis

  • max time kernel
    154s
  • max time network
    156s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    08-07-2021 13:30

General

  • Target

    toolspab2 (14).exe

  • Size

    315KB

  • MD5

    1d20e1f65938e837ef1b88f10f1bd6c3

  • SHA1

    703d7098dbfc476d2181b7fc041cc23e49c368f1

  • SHA256

    05cd7440851f13dd8f489bb3c06eba385d85d7d9a77a612049c04c541a88593d

  • SHA512

    f9d333abe1f721b8d45d7bc6b5f286af09a8d233bd1d41f0ad891840cf742364aeca2cb6ccd6543f56a8eaf32804f82f72f961d16d5ba663ad706d164915a196

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://999080321newfolder1002002131-service1002.space/

http://999080321newfolder1002002231-service1002.space/

http://999080321newfolder3100231-service1002.space/

http://999080321newfolder1002002431-service1002.space/

http://999080321newfolder1002002531-service1002.space/

http://999080321newfolder33417-012425999080321.space/

http://999080321test125831-service10020125999080321.space/

http://999080321test136831-service10020125999080321.space/

http://999080321test147831-service10020125999080321.space/

http://999080321test146831-service10020125999080321.space/

http://999080321test134831-service10020125999080321.space/

http://999080321est213531-service1002012425999080321.ru/

http://999080321yes1t3481-service10020125999080321.ru/

http://999080321test13561-service10020125999080321.su/

http://999080321test14781-service10020125999080321.info/

http://999080321test13461-service10020125999080321.net/

http://999080321test15671-service10020125999080321.tech/

http://999080321test12671-service10020125999080321.online/

http://999080321utest1341-service10020125999080321.ru/

http://999080321uest71-service100201dom25999080321.ru/

rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Deletes itself 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SendNotifyMessage 4 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\toolspab2 (14).exe
    "C:\Users\Admin\AppData\Local\Temp\toolspab2 (14).exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1608
    • C:\Users\Admin\AppData\Local\Temp\toolspab2 (14).exe
      "C:\Users\Admin\AppData\Local\Temp\toolspab2 (14).exe"
      2⤵
      • Loads dropped DLL
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:1720

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1212-66-0x00000000029E0000-0x00000000029F7000-memory.dmp

    Filesize

    92KB

  • memory/1608-64-0x00000000001B0000-0x00000000001BC000-memory.dmp

    Filesize

    48KB

  • memory/1720-60-0x0000000000400000-0x000000000040C000-memory.dmp

    Filesize

    48KB

  • memory/1720-62-0x0000000075801000-0x0000000075803000-memory.dmp

    Filesize

    8KB