Resubmissions

14-03-2024 11:45

240314-nw4b5sbb5v 10

13-03-2024 15:01

240313-sdxtvsfh9x 10

13-03-2024 14:22

240313-rpjkyagg56 10

Analysis

  • max time kernel
    1802s
  • max time network
    1558s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    13-03-2024 15:01

General

  • Target

    c88933a3bcc4494def9d0feb4568c4e865d6b333ace006256816166d34104ea0.exe

  • Size

    242KB

  • MD5

    8f44c565b6605afccbab295faaf420b8

  • SHA1

    a9fc5e1ca19b7034f846b12ee2e5890d8c64f3b3

  • SHA256

    c88933a3bcc4494def9d0feb4568c4e865d6b333ace006256816166d34104ea0

  • SHA512

    cdbf40c2def3a3dc45ac006f99ebff60d936eff53d2b16236f0424285a1749e847ee1180daa0e9e256bd86e44e76cdbc2b83d5afd1e8db1edb699d0b95900206

  • SSDEEP

    3072:sY1hNzde2qx1Y7CzY8hv2BXhssNPhslWeQYmbd/5NOVAAC:11Twx2uzYvVhsspSlWbYId

Malware Config

Extracted

Family

smokeloader

Version

2022

C2

http://selebration17io.io/index.php

http://vacantion18ffeu.cc/index.php

http://valarioulinity1.net/index.php

http://buriatiarutuhuob.net/index.php

http://cassiosssionunu.me/index.php

http://sulugilioiu19.net/index.php

http://goodfooggooftool.net/index.php

rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 3 IoCs
  • Checks SCSI registry key(s) 3 TTPs 12 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: MapViewOfSection 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\c88933a3bcc4494def9d0feb4568c4e865d6b333ace006256816166d34104ea0.exe
    "C:\Users\Admin\AppData\Local\Temp\c88933a3bcc4494def9d0feb4568c4e865d6b333ace006256816166d34104ea0.exe"
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:1852
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {E15940E4-1739-4BF2-9218-86FAA28CD283} S-1-5-21-406356229-2805545415-1236085040-1000:IKJSPGIM\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2412
    • C:\Users\Admin\AppData\Roaming\cijrtjd
      C:\Users\Admin\AppData\Roaming\cijrtjd
      2⤵
      • Executes dropped EXE
      • Checks SCSI registry key(s)
      • Suspicious behavior: MapViewOfSection
      PID:2416
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {D5CE462C-02E7-424B-BA67-50D3A8BADB35} S-1-5-21-406356229-2805545415-1236085040-1000:IKJSPGIM\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1916
    • C:\Users\Admin\AppData\Roaming\cijrtjd
      C:\Users\Admin\AppData\Roaming\cijrtjd
      2⤵
      • Executes dropped EXE
      • Checks SCSI registry key(s)
      • Suspicious behavior: MapViewOfSection
      PID:1040
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {30CB8A3C-80BD-415E-8184-052BCB82C5B7} S-1-5-21-406356229-2805545415-1236085040-1000:IKJSPGIM\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2556
    • C:\Users\Admin\AppData\Roaming\cijrtjd
      C:\Users\Admin\AppData\Roaming\cijrtjd
      2⤵
      • Executes dropped EXE
      • Checks SCSI registry key(s)
      • Suspicious behavior: MapViewOfSection
      PID:680

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\cijrtjd

    Filesize

    242KB

    MD5

    8f44c565b6605afccbab295faaf420b8

    SHA1

    a9fc5e1ca19b7034f846b12ee2e5890d8c64f3b3

    SHA256

    c88933a3bcc4494def9d0feb4568c4e865d6b333ace006256816166d34104ea0

    SHA512

    cdbf40c2def3a3dc45ac006f99ebff60d936eff53d2b16236f0424285a1749e847ee1180daa0e9e256bd86e44e76cdbc2b83d5afd1e8db1edb699d0b95900206

  • memory/680-37-0x0000000000400000-0x0000000001A29000-memory.dmp

    Filesize

    22.2MB

  • memory/680-33-0x0000000000400000-0x0000000001A29000-memory.dmp

    Filesize

    22.2MB

  • memory/680-32-0x00000000002D0000-0x00000000003D0000-memory.dmp

    Filesize

    1024KB

  • memory/1040-23-0x0000000001BF0000-0x0000000001CF0000-memory.dmp

    Filesize

    1024KB

  • memory/1040-28-0x0000000000400000-0x0000000001A29000-memory.dmp

    Filesize

    22.2MB

  • memory/1040-24-0x0000000000400000-0x0000000001A29000-memory.dmp

    Filesize

    22.2MB

  • memory/1360-25-0x0000000002A30000-0x0000000002A46000-memory.dmp

    Filesize

    88KB

  • memory/1360-16-0x00000000025C0000-0x00000000025D6000-memory.dmp

    Filesize

    88KB

  • memory/1360-4-0x0000000002590000-0x00000000025A6000-memory.dmp

    Filesize

    88KB

  • memory/1360-34-0x0000000002A60000-0x0000000002A76000-memory.dmp

    Filesize

    88KB

  • memory/1852-1-0x0000000001AC0000-0x0000000001BC0000-memory.dmp

    Filesize

    1024KB

  • memory/1852-5-0x0000000000400000-0x0000000001A29000-memory.dmp

    Filesize

    22.2MB

  • memory/1852-3-0x0000000000400000-0x0000000001A29000-memory.dmp

    Filesize

    22.2MB

  • memory/1852-2-0x0000000000220000-0x000000000022B000-memory.dmp

    Filesize

    44KB

  • memory/2416-17-0x0000000000400000-0x0000000001A29000-memory.dmp

    Filesize

    22.2MB

  • memory/2416-15-0x0000000000400000-0x0000000001A29000-memory.dmp

    Filesize

    22.2MB

  • memory/2416-14-0x0000000000230000-0x0000000000330000-memory.dmp

    Filesize

    1024KB