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Overview

overview

7

Static

static

3

2024-05-27...re.exe

windows7-x64

7

2024-05-27...re.exe

windows10-2004-x64

7

Analysis

  • max time kernel
    131s
  • max time network
    103s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/05/2024, 13:28 UTC

Sharing

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Report Analysis Logs

General

  • Target

    2024-05-27_e9245927fdbc56e6ee46e6cecf082c59_bkransomware.exe

  • Size

    71KB

  • MD5

    e9245927fdbc56e6ee46e6cecf082c59

  • SHA1

    dd0c0b2a4f50d2272ffa8b3e9e5a8e0f65c99933

  • SHA256

    0b4029f5e50b052c2097903f2f96d120f5a253f96d2a0723d1bc2b272ae1da33

  • SHA512

    81f3779a901e7d17574c8695f8e2e2298a3c11b953701ea8305a10b51cc7cbaa83372306fc5e82b42533b60ae636a8325e30ae5245eac9152650b7fa5b51d0fd

  • SSDEEP

    1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTf:ZRpAyazIliazTf

Score
7/10
persistencespywarestealer

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Drops file in Windows directory 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-27_e9245927fdbc56e6ee46e6cecf082c59_bkransomware.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-27_e9245927fdbc56e6ee46e6cecf082c59_bkransomware.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1976
    • C:\Windows\CTS.exe
      "C:\Windows\CTS.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      PID:4248

Network

  • flag-us
    DNS
    228.249.119.40.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    228.249.119.40.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    25.24.18.2.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    25.24.18.2.in-addr.arpa
    IN PTR
    Response
    25.24.18.2.in-addr.arpa
    IN PTR
    a2-18-24-25deploystaticakamaitechnologiescom
  • flag-us
    DNS
    69.31.126.40.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    69.31.126.40.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    58.55.71.13.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    58.55.71.13.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    50.23.12.20.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    50.23.12.20.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    198.187.3.20.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    198.187.3.20.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    55.36.223.20.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    55.36.223.20.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    14.227.111.52.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    14.227.111.52.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    tse1.mm.bing.net
    Remote address:
    8.8.8.8:53
    Request
    tse1.mm.bing.net
    IN A
    Response
    tse1.mm.bing.net
    IN CNAME
    mm-mm.bing.net.trafficmanager.net
    mm-mm.bing.net.trafficmanager.net
    IN CNAME
    dual-a-0001.a-msedge.net
    dual-a-0001.a-msedge.net
    IN A
    204.79.197.200
    dual-a-0001.a-msedge.net
    IN A
    13.107.21.200
  • flag-us
    GET
    https://tse1.mm.bing.net/th?id=OADD2.10239360931611_1SOG5TNNJKE1WH1R0&pid=21.2&c=3&w=1080&h=1920&dynsize=1&qlt=90
    Remote address:
    204.79.197.200:443
    Request
    GET /th?id=OADD2.10239360931611_1SOG5TNNJKE1WH1R0&pid=21.2&c=3&w=1080&h=1920&dynsize=1&qlt=90 HTTP/2.0
    host: tse1.mm.bing.net
    accept: */*
    accept-encoding: gzip, deflate, br
    user-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36 Edge/18.19041
    Response
    HTTP/2.0 200
    cache-control: public, max-age=2592000
    content-length: 659775
    content-type: image/jpeg
    x-cache: TCP_HIT
    access-control-allow-origin: *
    access-control-allow-headers: *
    access-control-allow-methods: GET, POST, OPTIONS
    timing-allow-origin: *
    report-to: {"group":"network-errors","max_age":604800,"endpoints":[{"url":"https://aefd.nelreports.net/api/report?cat=bingth&ndcParam=QUZE"}]}
    nel: {"report_to":"network-errors","max_age":604800,"success_fraction":0.001,"failure_fraction":1.0}
    accept-ch: Sec-CH-UA-Arch, Sec-CH-UA-Bitness, Sec-CH-UA-Full-Version, Sec-CH-UA-Full-Version-List, Sec-CH-UA-Mobile, Sec-CH-UA-Model, Sec-CH-UA-Platform, Sec-CH-UA-Platform-Version
    x-msedge-ref: Ref A: 2A3D9474A2CF4401B3140244ABB88E57 Ref B: LON04EDGE0921 Ref C: 2024-05-27T13:30:04Z
    date: Mon, 27 May 2024 13:30:04 GMT
  • flag-us
    GET
    https://tse1.mm.bing.net/th?id=OADD2.10239360931612_153L2SVWUYAQUME4E&pid=21.2&c=16&roil=0&roit=0&roir=1&roib=1&w=1920&h=1080&dynsize=1&qlt=90
    Remote address:
    204.79.197.200:443
    Request
    GET /th?id=OADD2.10239360931612_153L2SVWUYAQUME4E&pid=21.2&c=16&roil=0&roit=0&roir=1&roib=1&w=1920&h=1080&dynsize=1&qlt=90 HTTP/2.0
    host: tse1.mm.bing.net
    accept: */*
    accept-encoding: gzip, deflate, br
    user-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36 Edge/18.19041
    Response
    HTTP/2.0 200
    cache-control: public, max-age=2592000
    content-length: 621794
    content-type: image/jpeg
    x-cache: TCP_HIT
    access-control-allow-origin: *
    access-control-allow-headers: *
    access-control-allow-methods: GET, POST, OPTIONS
    timing-allow-origin: *
    report-to: {"group":"network-errors","max_age":604800,"endpoints":[{"url":"https://aefd.nelreports.net/api/report?cat=bingth&ndcParam=QUZE"}]}
    nel: {"report_to":"network-errors","max_age":604800,"success_fraction":0.001,"failure_fraction":1.0}
    accept-ch: Sec-CH-UA-Arch, Sec-CH-UA-Bitness, Sec-CH-UA-Full-Version, Sec-CH-UA-Full-Version-List, Sec-CH-UA-Mobile, Sec-CH-UA-Model, Sec-CH-UA-Platform, Sec-CH-UA-Platform-Version
    x-msedge-ref: Ref A: 87ABA16DB6E747BBB4209048B6A5C3C5 Ref B: LON04EDGE0921 Ref C: 2024-05-27T13:30:04Z
    date: Mon, 27 May 2024 13:30:04 GMT
  • flag-nl
    GET
    https://www.bing.com/th?id=OADD2.10239359720591_10PHTLBML42K6TRZO&pid=21.2&c=16&roil=0&roit=0&roir=1&roib=1&w=24&h=24&dynsize=1&qlt=90
    Remote address:
    23.62.61.168:443
    Request
    GET /th?id=OADD2.10239359720591_10PHTLBML42K6TRZO&pid=21.2&c=16&roil=0&roit=0&roir=1&roib=1&w=24&h=24&dynsize=1&qlt=90 HTTP/2.0
    host: www.bing.com
    accept: */*
    accept-encoding: gzip, deflate, br
    user-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36 Edge/18.19041
    Response
    HTTP/2.0 200
    cache-control: public, max-age=2592000
    content-type: image/png
    access-control-allow-origin: *
    access-control-allow-headers: *
    access-control-allow-methods: GET, POST, OPTIONS
    timing-allow-origin: *
    report-to: {"group":"network-errors","max_age":604800,"endpoints":[{"url":"https://aefd.nelreports.net/api/report?cat=bingth&ndcParam=QWthbWFp"}]}
    nel: {"report_to":"network-errors","max_age":604800,"success_fraction":0.001,"failure_fraction":1.0}
    content-length: 1107
    date: Mon, 27 May 2024 13:30:04 GMT
    alt-svc: h3=":443"; ma=93600
    x-cdn-traceid: 0.a43d3e17.1716816604.a7c8bc8
  • flag-us
    DNS
    168.61.62.23.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    168.61.62.23.in-addr.arpa
    IN PTR
    Response
    168.61.62.23.in-addr.arpa
    IN PTR
    a23-62-61-168deploystaticakamaitechnologiescom
  • 204.79.197.200:443
    tse1.mm.bing.net
    tls, http2
    1.2kB
     8.1kB
     16
    14
  • 204.79.197.200:443
    https://tse1.mm.bing.net/th?id=OADD2.10239360931612_153L2SVWUYAQUME4E&pid=21.2&c=16&roil=0&roit=0&roir=1&roib=1&w=1920&h=1080&dynsize=1&qlt=90
    tls, http2
    46.9kB
     1.3MB
     979
    977

    HTTP Request

    GET https://tse1.mm.bing.net/th?id=OADD2.10239360931611_1SOG5TNNJKE1WH1R0&pid=21.2&c=3&w=1080&h=1920&dynsize=1&qlt=90

    HTTP Request

    GET https://tse1.mm.bing.net/th?id=OADD2.10239360931612_153L2SVWUYAQUME4E&pid=21.2&c=16&roil=0&roit=0&roir=1&roib=1&w=1920&h=1080&dynsize=1&qlt=90

    HTTP Response

    200

    HTTP Response

    200
  • 23.62.61.168:443
    https://www.bing.com/th?id=OADD2.10239359720591_10PHTLBML42K6TRZO&pid=21.2&c=16&roil=0&roit=0&roir=1&roib=1&w=24&h=24&dynsize=1&qlt=90
    tls, http2
    1.4kB
     6.3kB
     16
    11

    HTTP Request

    GET https://www.bing.com/th?id=OADD2.10239359720591_10PHTLBML42K6TRZO&pid=21.2&c=16&roil=0&roit=0&roir=1&roib=1&w=24&h=24&dynsize=1&qlt=90

    HTTP Response

    200
  • 8.8.8.8:53
    228.249.119.40.in-addr.arpa
    dns
    73 B
     159 B
     1
    1

    DNS Request

    228.249.119.40.in-addr.arpa

  • 8.8.8.8:53
    25.24.18.2.in-addr.arpa
    dns
    69 B
     131 B
     1
    1

    DNS Request

    25.24.18.2.in-addr.arpa

  • 8.8.8.8:53
    69.31.126.40.in-addr.arpa
    dns
    71 B
     157 B
     1
    1

    DNS Request

    69.31.126.40.in-addr.arpa

  • 8.8.8.8:53
    58.55.71.13.in-addr.arpa
    dns
    70 B
     144 B
     1
    1

    DNS Request

    58.55.71.13.in-addr.arpa

  • 8.8.8.8:53
    50.23.12.20.in-addr.arpa
    dns
    70 B
     156 B
     1
    1

    DNS Request

    50.23.12.20.in-addr.arpa

  • 8.8.8.8:53
    198.187.3.20.in-addr.arpa
    dns
    71 B
     157 B
     1
    1

    DNS Request

    198.187.3.20.in-addr.arpa

  • 8.8.8.8:53
    55.36.223.20.in-addr.arpa
    dns
    71 B
     157 B
     1
    1

    DNS Request

    55.36.223.20.in-addr.arpa

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

    DNS Request

    14.227.111.52.in-addr.arpa

  • 8.8.8.8:53
    tse1.mm.bing.net
    dns
    62 B
     173 B
     1
    1

    DNS Request

    tse1.mm.bing.net

    DNS Response

    204.79.197.200
    13.107.21.200

  • 8.8.8.8:53
    168.61.62.23.in-addr.arpa
    dns
    71 B
     135 B
     1
    1

    DNS Request

    168.61.62.23.in-addr.arpa

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml
    Filesize

    394KB

    MD5

    ef54dc98a4ae615017119f9516407412

    SHA1

    57ed2576b5c2a119b1e477d38e7bf59facd220f6

    SHA256

    18a3a6e5aba25adcac56e91bc038c3076829713fc4fb2fd5438a685d653cfd34

    SHA512

    bdc68c4ba95ce50e6821b78846259920b4bc35cd8673c93874affb2b59a804cb1bebda9390e67d49d7fc95dcd06e76cfbc86bbf0d7fb118864486bf2a82efc93

    Download Submit

  • C:\Users\Admin\AppData\Local\Temp\HLP2PZhAdyFBHgJ.exe
    Filesize

    71KB

    MD5

    b8221edc83f71f995bd7420a467d34f6

    SHA1

    a35eb2f398136406c407d8a1c21f110479a6e46f

    SHA256

    08fb27ab0fbc6925757b6d44a186670573e0b8b004ad2e02851b0b3b1d004270

    SHA512

    38997395b94cfbd466de25d5ebb50295d7d77376526670f1f13146a38d138765ff36d353ff1db92ef62659fc817ee18f6bce78595e5e176b003511da702af280

    Download Submit

  • C:\Windows\CTS.exe
    Filesize

    71KB

    MD5

    f9d4ab0a726adc9b5e4b7d7b724912f1

    SHA1

    3d42ca2098475924f70ee4a831c4f003b4682328

    SHA256

    b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

    SHA512

    22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

    Download Submit

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