Analysis

  • max time kernel
    152s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08-10-2023 16:28

General

  • Target

    NEAS.b743e97b67d7c8a8d8363cd63cd0fee42e5b45c2d5f0633479d0a387dbb5e8b0_JC.exe

  • Size

    287KB

  • MD5

    4cd8e260c417673f17f86edd315ff061

  • SHA1

    af5889b3421b09f80a738aa36f627646f6cc2423

  • SHA256

    b743e97b67d7c8a8d8363cd63cd0fee42e5b45c2d5f0633479d0a387dbb5e8b0

  • SHA512

    de2f1795605a12a5950ae6918fae5d831464e9d4d21b58658c47877c7de20cb234dd1c8646ff4d10cdf47ef9e13ecf12341e4ff9d4e1f17fdca9dde2a9374960

  • SSDEEP

    3072:iGcS5tv/qtTBWbgI/Teq+v0fj6meCx9OeqejQ0oVS+/a9:iw5tn6WcuTeqpNF

Malware Config

Extracted

Family

smokeloader

Botnet

pub1

Extracted

Family

smokeloader

Version

2020

C2

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

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

rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Executes dropped EXE 2 IoCs
  • Suspicious use of SetThreadContext 2 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 AdjustPrivilegeToken 2 IoCs
  • Suspicious use of UnmapMainImage 1 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\NEAS.b743e97b67d7c8a8d8363cd63cd0fee42e5b45c2d5f0633479d0a387dbb5e8b0_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\NEAS.b743e97b67d7c8a8d8363cd63cd0fee42e5b45c2d5f0633479d0a387dbb5e8b0_JC.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:208
    • C:\Users\Admin\AppData\Local\Temp\NEAS.b743e97b67d7c8a8d8363cd63cd0fee42e5b45c2d5f0633479d0a387dbb5e8b0_JC.exe
      "C:\Users\Admin\AppData\Local\Temp\NEAS.b743e97b67d7c8a8d8363cd63cd0fee42e5b45c2d5f0633479d0a387dbb5e8b0_JC.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:2792
  • C:\Users\Admin\AppData\Roaming\thfhdve
    C:\Users\Admin\AppData\Roaming\thfhdve
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3820
    • C:\Users\Admin\AppData\Roaming\thfhdve
      C:\Users\Admin\AppData\Roaming\thfhdve
      2⤵
      • Executes dropped EXE
      • Checks SCSI registry key(s)
      • Suspicious behavior: MapViewOfSection
      PID:3568

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    287KB

    MD5

    4cd8e260c417673f17f86edd315ff061

    SHA1

    af5889b3421b09f80a738aa36f627646f6cc2423

    SHA256

    b743e97b67d7c8a8d8363cd63cd0fee42e5b45c2d5f0633479d0a387dbb5e8b0

    SHA512

    de2f1795605a12a5950ae6918fae5d831464e9d4d21b58658c47877c7de20cb234dd1c8646ff4d10cdf47ef9e13ecf12341e4ff9d4e1f17fdca9dde2a9374960

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

    Filesize

    287KB

    MD5

    4cd8e260c417673f17f86edd315ff061

    SHA1

    af5889b3421b09f80a738aa36f627646f6cc2423

    SHA256

    b743e97b67d7c8a8d8363cd63cd0fee42e5b45c2d5f0633479d0a387dbb5e8b0

    SHA512

    de2f1795605a12a5950ae6918fae5d831464e9d4d21b58658c47877c7de20cb234dd1c8646ff4d10cdf47ef9e13ecf12341e4ff9d4e1f17fdca9dde2a9374960

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

    Filesize

    287KB

    MD5

    4cd8e260c417673f17f86edd315ff061

    SHA1

    af5889b3421b09f80a738aa36f627646f6cc2423

    SHA256

    b743e97b67d7c8a8d8363cd63cd0fee42e5b45c2d5f0633479d0a387dbb5e8b0

    SHA512

    de2f1795605a12a5950ae6918fae5d831464e9d4d21b58658c47877c7de20cb234dd1c8646ff4d10cdf47ef9e13ecf12341e4ff9d4e1f17fdca9dde2a9374960

  • memory/208-1-0x0000000002610000-0x0000000002710000-memory.dmp

    Filesize

    1024KB

  • memory/208-2-0x0000000002420000-0x0000000002429000-memory.dmp

    Filesize

    36KB

  • memory/2792-3-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/2792-4-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/2792-6-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/3148-5-0x00000000029A0000-0x00000000029B6000-memory.dmp

    Filesize

    88KB

  • memory/3148-19-0x0000000002A10000-0x0000000002A26000-memory.dmp

    Filesize

    88KB

  • memory/3568-20-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/3820-16-0x0000000002400000-0x0000000002500000-memory.dmp

    Filesize

    1024KB