Analysis

  • max time kernel
    151s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-04-2023 18:18

General

  • Target

    65d0f98251d3fec8407452aea6c523f6cac7dd34d3bb141ddaec4a160d01dc68.exe

  • Size

    275KB

  • MD5

    cd73c933d5d2e9198b39ce8c94be2162

  • SHA1

    abca8c9ecc25ffc0472951031f0f362e59653fa5

  • SHA256

    65d0f98251d3fec8407452aea6c523f6cac7dd34d3bb141ddaec4a160d01dc68

  • SHA512

    d310c67c085ab352dddf37c134f76ac52b606161a5af500fd4fe7f220ce138132fc8e5724ad8db1e7398a5ac63bc80c96bd7d36a6beb1d3a24e020dc9ff96dcb

  • SSDEEP

    3072:osglgaVb7nykPOlg4z9uJS7Bio9GzbsQK/ZPYDKCK9feogTgB50gb2J0nD:4glkPOldMJSVjUzbpEPYDDKALhgb2a

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 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\65d0f98251d3fec8407452aea6c523f6cac7dd34d3bb141ddaec4a160d01dc68.exe
    "C:\Users\Admin\AppData\Local\Temp\65d0f98251d3fec8407452aea6c523f6cac7dd34d3bb141ddaec4a160d01dc68.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4636
    • C:\Users\Admin\AppData\Local\Temp\65d0f98251d3fec8407452aea6c523f6cac7dd34d3bb141ddaec4a160d01dc68.exe
      "C:\Users\Admin\AppData\Local\Temp\65d0f98251d3fec8407452aea6c523f6cac7dd34d3bb141ddaec4a160d01dc68.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:2328
  • C:\Users\Admin\AppData\Roaming\bcdjrbe
    C:\Users\Admin\AppData\Roaming\bcdjrbe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4080
    • C:\Users\Admin\AppData\Roaming\bcdjrbe
      C:\Users\Admin\AppData\Roaming\bcdjrbe
      2⤵
      • Executes dropped EXE
      • Checks SCSI registry key(s)
      • Suspicious behavior: MapViewOfSection
      PID:3664

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    275KB

    MD5

    cd73c933d5d2e9198b39ce8c94be2162

    SHA1

    abca8c9ecc25ffc0472951031f0f362e59653fa5

    SHA256

    65d0f98251d3fec8407452aea6c523f6cac7dd34d3bb141ddaec4a160d01dc68

    SHA512

    d310c67c085ab352dddf37c134f76ac52b606161a5af500fd4fe7f220ce138132fc8e5724ad8db1e7398a5ac63bc80c96bd7d36a6beb1d3a24e020dc9ff96dcb

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

    Filesize

    275KB

    MD5

    cd73c933d5d2e9198b39ce8c94be2162

    SHA1

    abca8c9ecc25ffc0472951031f0f362e59653fa5

    SHA256

    65d0f98251d3fec8407452aea6c523f6cac7dd34d3bb141ddaec4a160d01dc68

    SHA512

    d310c67c085ab352dddf37c134f76ac52b606161a5af500fd4fe7f220ce138132fc8e5724ad8db1e7398a5ac63bc80c96bd7d36a6beb1d3a24e020dc9ff96dcb

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

    Filesize

    275KB

    MD5

    cd73c933d5d2e9198b39ce8c94be2162

    SHA1

    abca8c9ecc25ffc0472951031f0f362e59653fa5

    SHA256

    65d0f98251d3fec8407452aea6c523f6cac7dd34d3bb141ddaec4a160d01dc68

    SHA512

    d310c67c085ab352dddf37c134f76ac52b606161a5af500fd4fe7f220ce138132fc8e5724ad8db1e7398a5ac63bc80c96bd7d36a6beb1d3a24e020dc9ff96dcb

  • memory/1264-137-0x00000000006C0000-0x00000000006D6000-memory.dmp

    Filesize

    88KB

  • memory/1264-151-0x0000000002740000-0x0000000002756000-memory.dmp

    Filesize

    88KB

  • memory/2328-134-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/2328-136-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/2328-138-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/3664-150-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/3664-152-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/4636-135-0x0000000000600000-0x0000000000609000-memory.dmp

    Filesize

    36KB