Analysis

  • max time kernel
    150s
  • max time network
    122s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/01/2024, 00:59

General

  • Target

    73504cf8fa65991b2bccb9bf37199334.exe

  • Size

    250KB

  • MD5

    73504cf8fa65991b2bccb9bf37199334

  • SHA1

    b052a3250a3c67c52ece74fd81fe624e446b4718

  • SHA256

    eff3ee03b15bb4038d6a2a3acbfb91b064519f08f35fa36cdd83a641d6c43abb

  • SHA512

    bbba7ce2aed7784ee586732630a5574e499d9d1ab08cacfa35ef6794e5465e323cc3e76c8cca2596787dc69b032417285cf9328a70abb937290e3e0c90d5da14

  • SSDEEP

    3072:7PrjeSS7vYtClV9TgiMPpA5vUnMoKRl7/L1jEftWgeBHj8dZPOwNVXjzoZ8V:nj/SrYQ0P4RrLKVv3ZrNVfs8V

Malware Config

Extracted

Family

smokeloader

Botnet

pub1

Extracted

Family

smokeloader

Version

2020

C2

http://conceitosseg.com/upload/

http://integrasidata.com/upload/

http://ozentekstil.com/upload/

http://finbelportal.com/upload/

http://telanganadigital.com/upload/

rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Program crash 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: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of UnmapMainImage 1 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\73504cf8fa65991b2bccb9bf37199334.exe
    "C:\Users\Admin\AppData\Local\Temp\73504cf8fa65991b2bccb9bf37199334.exe"
    1⤵
    • Loads dropped DLL
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:116
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 116 -s 392
      2⤵
      • Program crash
      PID:1872
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 116 -ip 116
    1⤵
      PID:4460
    • C:\Users\Admin\AppData\Roaming\ruaagtt
      C:\Users\Admin\AppData\Roaming\ruaagtt
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks SCSI registry key(s)
      • Suspicious behavior: MapViewOfSection
      PID:1980
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1980 -s 392
        2⤵
        • Program crash
        PID:672
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 1980 -ip 1980
      1⤵
        PID:4960

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            • C:\Users\Admin\AppData\Local\Temp\CC4F.tmp

              Filesize

              1.6MB

              MD5

              4f3387277ccbd6d1f21ac5c07fe4ca68

              SHA1

              e16506f662dc92023bf82def1d621497c8ab5890

              SHA256

              767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac

              SHA512

              9da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219

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

              Filesize

              250KB

              MD5

              73504cf8fa65991b2bccb9bf37199334

              SHA1

              b052a3250a3c67c52ece74fd81fe624e446b4718

              SHA256

              eff3ee03b15bb4038d6a2a3acbfb91b064519f08f35fa36cdd83a641d6c43abb

              SHA512

              bbba7ce2aed7784ee586732630a5574e499d9d1ab08cacfa35ef6794e5465e323cc3e76c8cca2596787dc69b032417285cf9328a70abb937290e3e0c90d5da14

            • memory/116-2-0x00000000049C0000-0x00000000049C9000-memory.dmp

              Filesize

              36KB

            • memory/116-1-0x0000000002E70000-0x0000000002F70000-memory.dmp

              Filesize

              1024KB

            • memory/116-7-0x0000000000400000-0x0000000002C75000-memory.dmp

              Filesize

              40.5MB

            • memory/116-11-0x0000000000400000-0x0000000002C75000-memory.dmp

              Filesize

              40.5MB

            • memory/1980-20-0x0000000002EE0000-0x0000000002FE0000-memory.dmp

              Filesize

              1024KB

            • memory/1980-24-0x0000000000400000-0x0000000002C75000-memory.dmp

              Filesize

              40.5MB

            • memory/1980-28-0x0000000000400000-0x0000000002C75000-memory.dmp

              Filesize

              40.5MB

            • memory/2976-8-0x0000000002770000-0x0000000002785000-memory.dmp

              Filesize

              84KB

            • memory/2976-25-0x0000000002680000-0x0000000002695000-memory.dmp

              Filesize

              84KB