Analysis

  • max time kernel
    114s
  • 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
    13-10-2023 03:42

General

  • Target

    8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe

  • Size

    267KB

  • MD5

    94bc47f91a540c7d4f293bd3208ca79d

  • SHA1

    641aa079c31390ee951a0eb40ead4634d4180736

  • SHA256

    8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b

  • SHA512

    a589d56bf07e7de9a9a472766e764165789064e6c9dfb0b4bd10bdfe731d07ef994811b5b0327a4dbc3adb95d819dfa91a532b40c3646fcd748c3e5efc3f6713

  • SSDEEP

    3072:NrW2PMtQv+oFD63pXAZwID4BhWL4M9ME7YvTYpBxMCOoQGbQpnxNBYrcxqbY:VW2pv+oFD63py6oD9MSxC7EQpNYrY

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.

  • Deletes itself 1 IoCs
  • 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\8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe
    "C:\Users\Admin\AppData\Local\Temp\8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2944
    • C:\Users\Admin\AppData\Local\Temp\8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe
      "C:\Users\Admin\AppData\Local\Temp\8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:4440
  • C:\Users\Admin\AppData\Roaming\bbbdcif
    C:\Users\Admin\AppData\Roaming\bbbdcif
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4344
    • C:\Users\Admin\AppData\Roaming\bbbdcif
      C:\Users\Admin\AppData\Roaming\bbbdcif
      2⤵
      • Executes dropped EXE
      • Checks SCSI registry key(s)
      • Suspicious behavior: MapViewOfSection
      PID:1400

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    267KB

    MD5

    94bc47f91a540c7d4f293bd3208ca79d

    SHA1

    641aa079c31390ee951a0eb40ead4634d4180736

    SHA256

    8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b

    SHA512

    a589d56bf07e7de9a9a472766e764165789064e6c9dfb0b4bd10bdfe731d07ef994811b5b0327a4dbc3adb95d819dfa91a532b40c3646fcd748c3e5efc3f6713

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

    Filesize

    267KB

    MD5

    94bc47f91a540c7d4f293bd3208ca79d

    SHA1

    641aa079c31390ee951a0eb40ead4634d4180736

    SHA256

    8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b

    SHA512

    a589d56bf07e7de9a9a472766e764165789064e6c9dfb0b4bd10bdfe731d07ef994811b5b0327a4dbc3adb95d819dfa91a532b40c3646fcd748c3e5efc3f6713

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

    Filesize

    267KB

    MD5

    94bc47f91a540c7d4f293bd3208ca79d

    SHA1

    641aa079c31390ee951a0eb40ead4634d4180736

    SHA256

    8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b

    SHA512

    a589d56bf07e7de9a9a472766e764165789064e6c9dfb0b4bd10bdfe731d07ef994811b5b0327a4dbc3adb95d819dfa91a532b40c3646fcd748c3e5efc3f6713

  • memory/1400-20-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/2944-1-0x0000000000820000-0x0000000000920000-memory.dmp

    Filesize

    1024KB

  • memory/2944-2-0x0000000002320000-0x0000000002329000-memory.dmp

    Filesize

    36KB

  • memory/3116-5-0x0000000002DD0000-0x0000000002DE6000-memory.dmp

    Filesize

    88KB

  • memory/3116-19-0x0000000002B40000-0x0000000002B56000-memory.dmp

    Filesize

    88KB

  • memory/4344-16-0x0000000000990000-0x0000000000A90000-memory.dmp

    Filesize

    1024KB

  • memory/4440-3-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/4440-4-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/4440-6-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB