Analysis

  • max time kernel
    150s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    15/09/2023, 21:39

General

  • Target

    SecuriteInfo.com.W32.Kryptik.KMY.gen.Eldorado.22433.13822.exe

  • Size

    267KB

  • MD5

    24dbebd26b029b6304bed121b5af43c4

  • SHA1

    6657d33ab6958b155c67cc12d55647b1b0bc28ad

  • SHA256

    9e7c8aea93412acc8d8de3a956e8485a86caf40c626b2abd491bd5404df1bfbb

  • SHA512

    470559b9db03a1b3c10a6e91a1e03c6b15979a3d754c9f2a5684a06e87a9722bd7929872fa8cb15b8c5f183fead77272e57966095b493a1b608e93130db4ddf8

  • SSDEEP

    3072:QXUMeUgFUvuQ+qOsW8gPwI0eNcCOdvriM5vVos1lRLootRbrNpm:OUMeAvuQ+qOsWttcpRriMMIS

Malware Config

Extracted

Family

smokeloader

Botnet

pub1

Extracted

Family

smokeloader

Version

2022

C2

http://gudintas.at/tmp/

http://pik96.ru/tmp/

http://rosatiauto.com/tmp/

http://kingpirate.ru/tmp/

rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Downloads MZ/PE file
  • Deletes itself 1 IoCs
  • Executes dropped EXE 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 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.W32.Kryptik.KMY.gen.Eldorado.22433.13822.exe
    "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.W32.Kryptik.KMY.gen.Eldorado.22433.13822.exe"
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:3056
  • C:\Users\Admin\AppData\Local\Temp\5B59.exe
    C:\Users\Admin\AppData\Local\Temp\5B59.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:2780
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {AEBE3A3F-D99C-4022-AED1-5C9628039791} S-1-5-21-3185155662-718608226-894467740-1000:YETUIZPU\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2716
    • C:\Users\Admin\AppData\Roaming\btucvws
      C:\Users\Admin\AppData\Roaming\btucvws
      2⤵
      • Executes dropped EXE
      • Checks SCSI registry key(s)
      • Suspicious behavior: MapViewOfSection
      PID:2712

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\5B59.exe

          Filesize

          505KB

          MD5

          3082e7832f7a31397990d4d3ae4c75c9

          SHA1

          769b150e219c7e8d7221f7a0f0ba6ef617fd036d

          SHA256

          716f6379cc32afb03ef2639b14e32b4df5538b99b84dafe355b39f8934e7c740

          SHA512

          8e371f4b075070daf8efb449ab87d923eb4d3cad74d7c9c3d3cef76f43f268c0e4aabe6fa1f801e20ac49e25f9bac70338044fbe9bd408883429ca34fb98ade4

        • C:\Users\Admin\AppData\Local\Temp\5B59.exe

          Filesize

          505KB

          MD5

          3082e7832f7a31397990d4d3ae4c75c9

          SHA1

          769b150e219c7e8d7221f7a0f0ba6ef617fd036d

          SHA256

          716f6379cc32afb03ef2639b14e32b4df5538b99b84dafe355b39f8934e7c740

          SHA512

          8e371f4b075070daf8efb449ab87d923eb4d3cad74d7c9c3d3cef76f43f268c0e4aabe6fa1f801e20ac49e25f9bac70338044fbe9bd408883429ca34fb98ade4

        • C:\Users\Admin\AppData\Local\Temp\5B59.exe

          Filesize

          505KB

          MD5

          3082e7832f7a31397990d4d3ae4c75c9

          SHA1

          769b150e219c7e8d7221f7a0f0ba6ef617fd036d

          SHA256

          716f6379cc32afb03ef2639b14e32b4df5538b99b84dafe355b39f8934e7c740

          SHA512

          8e371f4b075070daf8efb449ab87d923eb4d3cad74d7c9c3d3cef76f43f268c0e4aabe6fa1f801e20ac49e25f9bac70338044fbe9bd408883429ca34fb98ade4

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

          Filesize

          267KB

          MD5

          24dbebd26b029b6304bed121b5af43c4

          SHA1

          6657d33ab6958b155c67cc12d55647b1b0bc28ad

          SHA256

          9e7c8aea93412acc8d8de3a956e8485a86caf40c626b2abd491bd5404df1bfbb

          SHA512

          470559b9db03a1b3c10a6e91a1e03c6b15979a3d754c9f2a5684a06e87a9722bd7929872fa8cb15b8c5f183fead77272e57966095b493a1b608e93130db4ddf8

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

          Filesize

          267KB

          MD5

          24dbebd26b029b6304bed121b5af43c4

          SHA1

          6657d33ab6958b155c67cc12d55647b1b0bc28ad

          SHA256

          9e7c8aea93412acc8d8de3a956e8485a86caf40c626b2abd491bd5404df1bfbb

          SHA512

          470559b9db03a1b3c10a6e91a1e03c6b15979a3d754c9f2a5684a06e87a9722bd7929872fa8cb15b8c5f183fead77272e57966095b493a1b608e93130db4ddf8

        • memory/1200-4-0x00000000021D0000-0x00000000021E6000-memory.dmp

          Filesize

          88KB

        • memory/1200-28-0x0000000003E60000-0x0000000003E76000-memory.dmp

          Filesize

          88KB

        • memory/2712-26-0x00000000008B0000-0x00000000009B0000-memory.dmp

          Filesize

          1024KB

        • memory/2712-29-0x0000000000400000-0x0000000000711000-memory.dmp

          Filesize

          3.1MB

        • memory/2712-27-0x0000000000400000-0x0000000000711000-memory.dmp

          Filesize

          3.1MB

        • memory/2780-19-0x00000000748E0000-0x0000000074FCE000-memory.dmp

          Filesize

          6.9MB

        • memory/2780-21-0x0000000000450000-0x0000000000490000-memory.dmp

          Filesize

          256KB

        • memory/2780-22-0x00000000748E0000-0x0000000074FCE000-memory.dmp

          Filesize

          6.9MB

        • memory/2780-20-0x00000000000A0000-0x0000000000122000-memory.dmp

          Filesize

          520KB

        • memory/3056-3-0x0000000000400000-0x0000000000711000-memory.dmp

          Filesize

          3.1MB

        • memory/3056-2-0x00000000001C0000-0x00000000001C9000-memory.dmp

          Filesize

          36KB

        • memory/3056-8-0x00000000001C0000-0x00000000001C9000-memory.dmp

          Filesize

          36KB

        • memory/3056-5-0x0000000000400000-0x0000000000711000-memory.dmp

          Filesize

          3.1MB

        • memory/3056-1-0x00000000002D0000-0x00000000003D0000-memory.dmp

          Filesize

          1024KB