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Resubmissions

05/04/2023, 07:25

230405-h87mfaed2x 10

04/04/2023, 22:20

230404-183btscc4v 10

Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/04/2023, 22:20

General

  • Target

    cfgtbvh.exe

  • Size

    237KB

  • MD5

    51b3cddd75069bda9deb36fd539442e2

  • SHA1

    a5183c20f329a3ea3726ce2c8300b0f2654ab531

  • SHA256

    f0098ef0f31aa50b097bfb3ac7e420c518a697394a0ffed54640a55045263fa9

  • SHA512

    50e78682a53f0ef631e7faaf2892057b35e5895afee8d8520f2a3a49f99e239912bef67e8ebe70b099528b5a1753a06aad0675bc3dec64b9a2e7b605ced2d06c

  • SSDEEP

    6144:DL3v+mWnRzxvqRYwqgft1rSVsMAdaV/BaW:D7v+myRtqRYRgX20di/F

Malware Config

Extracted

Family

smokeloader

Botnet

pub4

Extracted

Family

smokeloader

Version

2022

C2

http://aapu.at/tmp/

http://poudineh.com/tmp/

http://firsttrusteedrx.ru/tmp/

http://kingpirate.ru/tmp/

rc4.i32
rc4.i32

Signatures

  • Detect rhadamanthys stealer shellcode 5 IoCs
  • Rhadamanthys

    Rhadamanthys is an info stealer written in C++ first seen in August 2022.

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Accesses Microsoft Outlook profiles 1 TTPs 6 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 7 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.

  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cfgtbvh.exe
    "C:\Users\Admin\AppData\Local\Temp\cfgtbvh.exe"
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:3532
  • C:\Users\Admin\AppData\Local\Temp\EC0A.exe
    C:\Users\Admin\AppData\Local\Temp\EC0A.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:4156
    • C:\Windows\system32\dllhost.exe
      "C:\Windows\system32\dllhost.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Checks processor information in registry
      • outlook_office_path
      • outlook_win_path
      PID:4760

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\EC0A.exe

    Filesize

    332KB

    MD5

    b0d324176fa2559bfeb2e8d6ce117d58

    SHA1

    8967469bcca172d5a15b9aeed141a3e970ba2abf

    SHA256

    39492cb6b44ab5111fc433cfb989e5dea977a23773660e2dede758746549454d

    SHA512

    9c3edbd5ed28ef054b70b2184fb659305cadb4150db04a9effb12774240e1a2b5c20c66e0b0fe3594a0890e3bc7573075d8f8850923d734b9eaa631c7836656c

  • C:\Users\Admin\AppData\Local\Temp\EC0A.exe

    Filesize

    332KB

    MD5

    b0d324176fa2559bfeb2e8d6ce117d58

    SHA1

    8967469bcca172d5a15b9aeed141a3e970ba2abf

    SHA256

    39492cb6b44ab5111fc433cfb989e5dea977a23773660e2dede758746549454d

    SHA512

    9c3edbd5ed28ef054b70b2184fb659305cadb4150db04a9effb12774240e1a2b5c20c66e0b0fe3594a0890e3bc7573075d8f8850923d734b9eaa631c7836656c

  • memory/2780-135-0x0000000002C70000-0x0000000002C86000-memory.dmp

    Filesize

    88KB

  • memory/3532-134-0x0000000002520000-0x0000000002529000-memory.dmp

    Filesize

    36KB

  • memory/3532-136-0x0000000000400000-0x00000000007EF000-memory.dmp

    Filesize

    3.9MB

  • memory/4156-147-0x0000000002410000-0x000000000243E000-memory.dmp

    Filesize

    184KB

  • memory/4156-148-0x0000000000400000-0x0000000000807000-memory.dmp

    Filesize

    4.0MB

  • memory/4156-151-0x0000000002440000-0x000000000245C000-memory.dmp

    Filesize

    112KB

  • memory/4156-152-0x0000000002440000-0x000000000245C000-memory.dmp

    Filesize

    112KB

  • memory/4156-153-0x0000000000960000-0x0000000000962000-memory.dmp

    Filesize

    8KB

  • memory/4156-154-0x0000000002440000-0x000000000245C000-memory.dmp

    Filesize

    112KB

  • memory/4156-169-0x0000000002480000-0x000000000249C000-memory.dmp

    Filesize

    112KB

  • memory/4156-163-0x0000000000400000-0x0000000000807000-memory.dmp

    Filesize

    4.0MB

  • memory/4156-156-0x0000000000960000-0x0000000000963000-memory.dmp

    Filesize

    12KB

  • memory/4156-168-0x0000000000400000-0x0000000000807000-memory.dmp

    Filesize

    4.0MB

  • memory/4156-164-0x0000000002440000-0x000000000245C000-memory.dmp

    Filesize

    112KB

  • memory/4760-157-0x0000016D231B0000-0x0000016D231B7000-memory.dmp

    Filesize

    28KB

  • memory/4760-161-0x00007FF4E67E0000-0x00007FF4E68DA000-memory.dmp

    Filesize

    1000KB

  • memory/4760-162-0x00007FF4E67E0000-0x00007FF4E68DA000-memory.dmp

    Filesize

    1000KB

  • memory/4760-160-0x00007FF4E67E0000-0x00007FF4E68DA000-memory.dmp

    Filesize

    1000KB

  • memory/4760-159-0x00007FF4E67E0000-0x00007FF4E68DA000-memory.dmp

    Filesize

    1000KB

  • memory/4760-165-0x00007FF4E67E0000-0x00007FF4E68DA000-memory.dmp

    Filesize

    1000KB

  • memory/4760-158-0x00007FF4E67E0000-0x00007FF4E68DA000-memory.dmp

    Filesize

    1000KB

  • memory/4760-155-0x0000016D22EA0000-0x0000016D22EA1000-memory.dmp

    Filesize

    4KB