Analysis

  • max time kernel
    300s
  • max time network
    127s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    22/09/2023, 04:16

General

  • Target

    40c624a1492477b0ed0e5c704447d95f728dfe41b7e857cd1c5018e8d3b3df65.exe

  • Size

    294KB

  • MD5

    a2d237a8dcda5047bb9e612825ebc499

  • SHA1

    d4f6d2707f5fc415ec85dcea2b318e1c3d97209c

  • SHA256

    40c624a1492477b0ed0e5c704447d95f728dfe41b7e857cd1c5018e8d3b3df65

  • SHA512

    8e789640a564baa078db349483844acc6f8004d1338bf61c643a9f48a358e75b382b98f991b95901a9a29cf0075962ee312bab8f26492dddd8c183d37d160f14

  • SSDEEP

    6144:ckdkZSl4JZNfVgQl6B0zTxjq7imHvFg8F:ckdkIOJZNfNl6GzTSPe8

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.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 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 4 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\40c624a1492477b0ed0e5c704447d95f728dfe41b7e857cd1c5018e8d3b3df65.exe
    "C:\Users\Admin\AppData\Local\Temp\40c624a1492477b0ed0e5c704447d95f728dfe41b7e857cd1c5018e8d3b3df65.exe"
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:1976
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {87102147-F08A-41D2-BA4F-08EBAA4C7441} S-1-5-21-3185155662-718608226-894467740-1000:YETUIZPU\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2204
    • C:\Users\Admin\AppData\Roaming\wjwceub
      C:\Users\Admin\AppData\Roaming\wjwceub
      2⤵
      • Executes dropped EXE
      • Checks SCSI registry key(s)
      • Suspicious behavior: MapViewOfSection
      PID:2520

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          294KB

          MD5

          a2d237a8dcda5047bb9e612825ebc499

          SHA1

          d4f6d2707f5fc415ec85dcea2b318e1c3d97209c

          SHA256

          40c624a1492477b0ed0e5c704447d95f728dfe41b7e857cd1c5018e8d3b3df65

          SHA512

          8e789640a564baa078db349483844acc6f8004d1338bf61c643a9f48a358e75b382b98f991b95901a9a29cf0075962ee312bab8f26492dddd8c183d37d160f14

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

          Filesize

          294KB

          MD5

          a2d237a8dcda5047bb9e612825ebc499

          SHA1

          d4f6d2707f5fc415ec85dcea2b318e1c3d97209c

          SHA256

          40c624a1492477b0ed0e5c704447d95f728dfe41b7e857cd1c5018e8d3b3df65

          SHA512

          8e789640a564baa078db349483844acc6f8004d1338bf61c643a9f48a358e75b382b98f991b95901a9a29cf0075962ee312bab8f26492dddd8c183d37d160f14

        • memory/1232-13-0x000007FF511F0000-0x000007FF511FA000-memory.dmp

          Filesize

          40KB

        • memory/1232-4-0x0000000002910000-0x0000000002926000-memory.dmp

          Filesize

          88KB

        • memory/1232-12-0x000007FEF5AA0000-0x000007FEF5BE3000-memory.dmp

          Filesize

          1.3MB

        • memory/1232-19-0x0000000002A10000-0x0000000002A26000-memory.dmp

          Filesize

          88KB

        • memory/1976-5-0x0000000000400000-0x0000000000718000-memory.dmp

          Filesize

          3.1MB

        • memory/1976-8-0x0000000000220000-0x0000000000229000-memory.dmp

          Filesize

          36KB

        • memory/1976-1-0x00000000008A0000-0x00000000009A0000-memory.dmp

          Filesize

          1024KB

        • memory/1976-3-0x0000000000400000-0x0000000000718000-memory.dmp

          Filesize

          3.1MB

        • memory/1976-2-0x0000000000220000-0x0000000000229000-memory.dmp

          Filesize

          36KB

        • memory/2520-17-0x00000000007E0000-0x00000000008E0000-memory.dmp

          Filesize

          1024KB

        • memory/2520-18-0x0000000000400000-0x0000000000718000-memory.dmp

          Filesize

          3.1MB

        • memory/2520-20-0x0000000000400000-0x0000000000718000-memory.dmp

          Filesize

          3.1MB