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Analysis

  • max time kernel
    150s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/03/2023, 10:00 UTC

General

  • Target

    file.exe

  • Size

    276KB

  • MD5

    5decbf34d093ad55cee5e302a4c1507b

  • SHA1

    a96f0a93c910e7993c91b243d53a6918efe62067

  • SHA256

    f59f47316352a6fccc73f2276a272bf215f338dd0b05bfca7db591517e8f5c2c

  • SHA512

    d29c2d1399cd1f83a22897bfc10a1f8fe5332fbb23ca641802a8260488d54578b62c3ef36ebca4829a405322b9a9e252348a3f63a4c33d756fbb28a4aaba0d57

  • SSDEEP

    3072:CVGkCPdRRWVXAsvhwrFmlaOP6cUvLMgVrsli4DoD94aX7G/nCqHbgMCJQN0f5KRh:VdRWdSFmlJULMbk4DE94aXi/CqgTfm

Malware Config

Extracted

Family

smokeloader

Botnet

lab

Extracted

Family

smokeloader

Version

2020

C2

http://host-file-host6.com/

http://host-host-file8.com/

rc4.i32
1
0x33f8f0d2
rc4.i32
1
0xaa0488bb

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Suspicious use of SetThreadContext 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Modifies registry class 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 6 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\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1472
    • C:\Users\Admin\AppData\Local\Temp\file.exe
      "C:\Users\Admin\AppData\Local\Temp\file.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:4240

Network

  • flag-us
    DNS
    8.3.197.209.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    8.3.197.209.in-addr.arpa
    IN PTR
    Response
    8.3.197.209.in-addr.arpa
    IN PTR
    vip0x008map2sslhwcdnnet
  • flag-us
    DNS
    123.108.74.40.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    123.108.74.40.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    108.211.229.192.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    108.211.229.192.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    210.81.184.52.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    210.81.184.52.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    154.239.44.20.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    154.239.44.20.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    196.249.167.52.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    196.249.167.52.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    host-file-host6.com
    Remote address:
    8.8.8.8:53
    Request
    host-file-host6.com
    IN A
    Response
    host-file-host6.com
    IN A
    185.246.221.154
  • flag-nl
    POST
    http://host-file-host6.com/
    Remote address:
    185.246.221.154:80
    Request
    POST / HTTP/1.1
    Connection: Keep-Alive
    Content-Type: application/x-www-form-urlencoded
    Accept: */*
    Referer: http://tbmut.com/
    User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; Trident/7.0; rv:11.0) like Gecko
    Content-Length: 147
    Host: host-file-host6.com
    Response
    HTTP/1.1 200 OK
    Server: nginx/1.20.2
    Date: Sat, 25 Mar 2023 10:00:32 GMT
    Content-Type: text/html; charset=UTF-8
    Transfer-Encoding: chunked
    Connection: close
  • flag-us
    DNS
    host-host-file8.com
    Remote address:
    8.8.8.8:53
    Request
    host-host-file8.com
    IN A
    Response
  • flag-us
    DNS
    host-host-file8.com
    Remote address:
    8.8.8.8:53
    Request
    host-host-file8.com
    IN A
    Response
  • flag-us
    DNS
    host-host-file8.com
    Remote address:
    8.8.8.8:53
    Request
    host-host-file8.com
    IN A
    Response
  • flag-us
    DNS
    host-host-file8.com
    Remote address:
    8.8.8.8:53
    Request
    host-host-file8.com
    IN A
    Response
  • flag-us
    DNS
    154.221.246.185.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    154.221.246.185.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    176.122.125.40.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    176.122.125.40.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    64.13.109.52.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    64.13.109.52.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    199.176.139.52.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    199.176.139.52.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    199.176.139.52.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    199.176.139.52.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    177.238.32.23.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    177.238.32.23.in-addr.arpa
    IN PTR
    Response
    177.238.32.23.in-addr.arpa
    IN PTR
    a23-32-238-177deploystaticakamaitechnologiescom
  • flag-us
    DNS
    177.238.32.23.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    177.238.32.23.in-addr.arpa
    IN PTR
    Response
    177.238.32.23.in-addr.arpa
    IN PTR
    a23-32-238-177deploystaticakamaitechnologiescom
  • 117.18.232.240:80
    322 B
    7
  • 185.246.221.154:80
    http://host-file-host6.com/
    http
    686 B
    402 B
    6
    5

    HTTP Request

    POST http://host-file-host6.com/

    HTTP Response

    200
  • 52.152.110.14:443
    260 B
    5
  • 162.19.139.184:2222
    46 B
    390 B
    1
    1
  • 13.69.239.74:443
    322 B
    7
  • 117.18.232.240:80
    322 B
    7
  • 117.18.232.240:80
    322 B
    7
  • 173.223.113.164:443
    322 B
    7
  • 173.223.113.131:80
    322 B
    7
  • 131.253.33.203:80
    322 B
    7
  • 8.8.8.8:53
    8.3.197.209.in-addr.arpa
    dns
    70 B
    111 B
    1
    1

    DNS Request

    8.3.197.209.in-addr.arpa

  • 8.8.8.8:53
    123.108.74.40.in-addr.arpa
    dns
    72 B
    146 B
    1
    1

    DNS Request

    123.108.74.40.in-addr.arpa

  • 8.8.8.8:53
    108.211.229.192.in-addr.arpa
    dns
    74 B
    145 B
    1
    1

    DNS Request

    108.211.229.192.in-addr.arpa

  • 8.8.8.8:53
    210.81.184.52.in-addr.arpa
    dns
    72 B
    146 B
    1
    1

    DNS Request

    210.81.184.52.in-addr.arpa

  • 8.8.8.8:53
    154.239.44.20.in-addr.arpa
    dns
    72 B
    158 B
    1
    1

    DNS Request

    154.239.44.20.in-addr.arpa

  • 8.8.8.8:53
    196.249.167.52.in-addr.arpa
    dns
    73 B
    147 B
    1
    1

    DNS Request

    196.249.167.52.in-addr.arpa

  • 8.8.8.8:53
    host-file-host6.com
    dns
    65 B
    81 B
    1
    1

    DNS Request

    host-file-host6.com

    DNS Response

    185.246.221.154

  • 8.8.8.8:53
    host-host-file8.com
    dns
    260 B
    260 B
    4
    4

    DNS Request

    host-host-file8.com

    DNS Request

    host-host-file8.com

    DNS Request

    host-host-file8.com

    DNS Request

    host-host-file8.com

  • 8.8.8.8:53
    154.221.246.185.in-addr.arpa
    dns
    74 B
    149 B
    1
    1

    DNS Request

    154.221.246.185.in-addr.arpa

  • 8.8.8.8:53
    176.122.125.40.in-addr.arpa
    dns
    73 B
    159 B
    1
    1

    DNS Request

    176.122.125.40.in-addr.arpa

  • 8.8.8.8:53
    64.13.109.52.in-addr.arpa
    dns
    71 B
    145 B
    1
    1

    DNS Request

    64.13.109.52.in-addr.arpa

  • 8.8.8.8:53
    199.176.139.52.in-addr.arpa
    dns
    146 B
    318 B
    2
    2

    DNS Request

    199.176.139.52.in-addr.arpa

    DNS Request

    199.176.139.52.in-addr.arpa

  • 8.8.8.8:53
    177.238.32.23.in-addr.arpa
    dns
    144 B
    274 B
    2
    2

    DNS Request

    177.238.32.23.in-addr.arpa

    DNS Request

    177.238.32.23.in-addr.arpa

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1472-135-0x0000000002CC0000-0x0000000002CC9000-memory.dmp

    Filesize

    36KB

  • memory/2524-137-0x0000000000E30000-0x0000000000E46000-memory.dmp

    Filesize

    88KB

  • memory/4240-134-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/4240-136-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/4240-138-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

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