Analysis

  • max time kernel
    152s
  • max time network
    128s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    10/10/2023, 21:08

General

  • Target

    file.exe

  • Size

    239KB

  • MD5

    cdc140bc9946b0e1e13596b6e4f7b7d2

  • SHA1

    84e23346c0e7501ce0b47ff83307c5468ae613a5

  • SHA256

    9d8e733fe6e1f661b785cdd11606761fad9ba21527c9dc4eba984ff3b86449f4

  • SHA512

    0b7f337e85f363ce122c61326409f3f341c5541c3db62885e62394f0cb9cf76973d7531416353e29dae05d66d1db42f5e35c113c37ef2d75399563c31d7436ef

  • SSDEEP

    3072:uXj+eE5Bc6zOPUMCcl6oK/5w1KerJsyMqb4Cp0/zgtA4p5Vz20J:28nOPTl7KBw1HrMqcutAiz2

Malware Config

Extracted

Family

smokeloader

Version

2022

C2

http://potunulit.org/

http://hutnilior.net/

http://bulimu55t.net/

http://soryytlic4.net/

http://novanosa5org.org/

http://nuljjjnuli.org/

http://tolilolihul.net/

http://somatoka51hub.net/

http://hujukui3.net/

http://bukubuka1.net/

http://golilopaster.org/

http://newzelannd66.org/

http://otriluyttn.org/

rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 6 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 2 IoCs
  • Suspicious use of WriteProcessMemory 4 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\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:2412
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {A8EC3D24-9BC7-489B-A0C1-6CC031781C3B} S-1-5-21-3185155662-718608226-894467740-1000:YETUIZPU\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2816
    • C:\Users\Admin\AppData\Roaming\wevstff
      C:\Users\Admin\AppData\Roaming\wevstff
      2⤵
      • Executes dropped EXE
      • Checks SCSI registry key(s)
      • Suspicious behavior: MapViewOfSection
      PID:2540

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    239KB

    MD5

    cdc140bc9946b0e1e13596b6e4f7b7d2

    SHA1

    84e23346c0e7501ce0b47ff83307c5468ae613a5

    SHA256

    9d8e733fe6e1f661b785cdd11606761fad9ba21527c9dc4eba984ff3b86449f4

    SHA512

    0b7f337e85f363ce122c61326409f3f341c5541c3db62885e62394f0cb9cf76973d7531416353e29dae05d66d1db42f5e35c113c37ef2d75399563c31d7436ef

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

    Filesize

    239KB

    MD5

    cdc140bc9946b0e1e13596b6e4f7b7d2

    SHA1

    84e23346c0e7501ce0b47ff83307c5468ae613a5

    SHA256

    9d8e733fe6e1f661b785cdd11606761fad9ba21527c9dc4eba984ff3b86449f4

    SHA512

    0b7f337e85f363ce122c61326409f3f341c5541c3db62885e62394f0cb9cf76973d7531416353e29dae05d66d1db42f5e35c113c37ef2d75399563c31d7436ef

  • memory/1224-3-0x0000000002980000-0x0000000002996000-memory.dmp

    Filesize

    88KB

  • memory/1224-15-0x0000000002AF0000-0x0000000002B06000-memory.dmp

    Filesize

    88KB

  • memory/2412-0-0x00000000003C0000-0x00000000003D5000-memory.dmp

    Filesize

    84KB

  • memory/2412-1-0x00000000001B0000-0x00000000001B9000-memory.dmp

    Filesize

    36KB

  • memory/2412-2-0x0000000000400000-0x0000000000449000-memory.dmp

    Filesize

    292KB

  • memory/2412-7-0x00000000001B0000-0x00000000001B9000-memory.dmp

    Filesize

    36KB

  • memory/2412-4-0x0000000000400000-0x0000000000449000-memory.dmp

    Filesize

    292KB

  • memory/2412-8-0x00000000003C0000-0x00000000003D5000-memory.dmp

    Filesize

    84KB

  • memory/2540-14-0x0000000000400000-0x0000000000449000-memory.dmp

    Filesize

    292KB

  • memory/2540-16-0x0000000000400000-0x0000000000449000-memory.dmp

    Filesize

    292KB