Overview

overview

10

Static

static

10

Kurome.Bui...er.exe

windows7-x64

6

Kurome.Bui...er.exe

windows10-2004-x64

6

Kurome.Bui...db.dll

windows7-x64

1

Kurome.Bui...db.dll

windows10-2004-x64

1

Kurome.Bui...db.dll

windows7-x64

1

Kurome.Bui...db.dll

windows10-2004-x64

1

Kurome.Bui...ks.dll

windows7-x64

1

Kurome.Bui...ks.dll

windows10-2004-x64

1

Kurome.Bui...il.dll

windows7-x64

1

Kurome.Bui...il.dll

windows10-2004-x64

1

Kurome.Bui...ub.exe

windows7-x64

10

Kurome.Bui...ub.exe

windows10-2004-x64

10

Sharing

Copy URL
Twitter E-mail

General

  • Target

    ac4283d5ba38427cde5ecf6a7dc14df49e6467a5e08dd6408f9b0894a04d4835

  • Size

    740KB

  • Sample

    241107-hn19xsyapq

  • MD5

    66161d71fe0fd2535941433e39fb8331

  • SHA1

    675a86ba74609bd8dcdc38e347ea315f1215158a

  • SHA256

    ac4283d5ba38427cde5ecf6a7dc14df49e6467a5e08dd6408f9b0894a04d4835

  • SHA512

    35d46eda415dbb310dd6022e118c424d071b9760b732326a7392fbeec53e7a352d35c48e0f7edd17cd1bf936accb548b218a9dd2a6935b356d6cc0a38f716dcd

  • SSDEEP

    12288:PIcC3JxJas93ZfsvBk07hj8fwwvLMeb0dlmHHuHoMMLm2r3JCLh:Ax5xcU9EGuhIfw5ebckOIr6kQh

Score
10/10
redlinesectopratdiscoveryinfostealerrattrojan

Malware Config

Targets

    • Target

      Kurome.Builder/Kurome.Builder.exe

    • Size

      473KB

    • MD5

      a2dea5e5eae84e32bc4dc3c6789d7939

    • SHA1

      d31ec0c15ca50e4663b39be351c8562269a065b2

    • SHA256

      c747032f12707103c70dccd112c51eacb8151e4b401a54a2b6fed2a4aad800bd

    • SHA512

      60dd889f5c3ed3a3fc1e42cd072590eeb344e34d6a2a693d45cac51914b75f1bda8931c7025b2366f4cdc4ecdad1fc6bf77eb0daf43e551e2f795e6b9f44ae1a

    • SSDEEP

      12288:D5Hisa3jCsD6y0ch0C3wwILMeKSdlKHHV:DhijmWHphX3wyeK6Y1

    Score
    6/10
    discovery

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

    • Target

      Kurome.Builder/Mono.Cecil.Mdb.dll

    • Size

      42KB

    • MD5

      1c6aca0f1b1fa1661fc1e43c79334f7c

    • SHA1

      ec0f591a6d12e1ea7dc8714ec7e5ad7a04ef455d

    • SHA256

      411f8ed8c49738fa38a56ed8f991d556227d13602e83186e66ae1c4f821c940b

    • SHA512

      1c59e939d108f15881d29fe4ced4e5fa4a4476394b58b6eb464da77192cb8fe9221b7cd780af4596914d4cce7c3fc53f1bb567f944c58829de8efbe1fd87be76

    • SSDEEP

      768:Ar5EYZep98C87KHeBUZwrEzsEAnbF+em50KktmM4CRIcZwMRTIzMAtpw:Ar59g98C87KHeBUb5AnZG+zdwMRTzAtS

    Score
    1/10
    behavioral3behavioral4

    • Target

      Kurome.Builder/Mono.Cecil.Pdb.dll

    • Size

      87KB

    • MD5

      6d5eb860c2be5dbeb470e7d3f3e7dda4

    • SHA1

      80c76660b87c52127b1a7da48e27700f75362041

    • SHA256

      447ede1984bb4acd73bd97c0ec57a11c079cee8301c91fb199ca98c1906d3cc4

    • SHA512

      64cf4fe7de68a35720d2b9338ba9cf182e127d95d72d2ccf7ff5c73a368133663e70c988a460825fa87b2d03717a4447948d5262f56aceb7c3bf1cb3ab5a41a5

    • SSDEEP

      1536:2OCAsdBo+am5OMwr5IlALYKXgAJGsZhTjrjvjCXeO:ZCjta0OMuIlArVJGqT/jveXeO

    Score
    1/10
    behavioral5behavioral6

    • Target

      Kurome.Builder/Mono.Cecil.Rocks.dll

    • Size

      27KB

    • MD5

      6e7f0f4fff6c49e3f66127c23b7f1a53

    • SHA1

      14a529f8c7ee9f002d1e93dcf8ff158ab74c7e1a

    • SHA256

      2e2623319bdc362974a78ea4a43f4893011ec257884d24267f4594142fcd436e

    • SHA512

      0c773da6717dd6919cd6241d3cee26ab00bb61ea2dbeff24844a067af4c87ff5cbdb2fe3ada5db4707cee921b3fb353bd12ee22b8490597d4f67ad39bace235e

    • SSDEEP

      384:70ve8JOuJ5iC7n2NwxEXCni+VXcMeDz8PmR1ugLoaeuLMBG9UphJAprjE3uFLHa9:7+m4iCyrXOhG8uRssveum1pMFLHFBvd

    Score
    1/10
    behavioral7behavioral8

    • Target

      Kurome.Builder/Mono.Cecil.dll

    • Size

      350KB

    • MD5

      de69bb29d6a9dfb615a90df3580d63b1

    • SHA1

      74446b4dcc146ce61e5216bf7efac186adf7849b

    • SHA256

      f66f97866433e688acc3e4cd1e6ef14505f81df6b26dd6215e376767f6f954bc

    • SHA512

      6e96a510966a4acbca900773d4409720b0771fede37f24431bf0d8b9c611eaa152ba05ee588bb17f796d7b8caaccc10534e7cc1c907c28ddfa54ac4ce3952015

    • SSDEEP

      6144:jIevdbLPNYe8bikm98KXPHhOWY/fFREomhUFD3z:se1PNL+QRfBg/f/EWFD

    Score
    1/10
    behavioral10behavioral9

    • Target

      Kurome.Builder/stub.dll

    • Size

      96KB

    • MD5

      625ed01fd1f2dc43b3c2492956fddc68

    • SHA1

      48461ef33711d0080d7c520f79a0ec540bda6254

    • SHA256

      6824c2c92eb7cee929f9c6b91e75c8c1fc3bfe80495eba4fa27118d40ad82b2b

    • SHA512

      1889c7cee50092fe7a66469eb255b4013624615bac3a9579c4287bf870310bdc9018b0991f0ad7a9227c79c9bd08fd0c6fc7ebe97f21c16b7c06236f3755a665

    • SSDEEP

      1536:9G6ijoigzKqO1RUTBHQsu/0igR4vYVVlmbfaxv0ujXyyedOn4iwEEl:BSElHQ/ORUYos0ujyzdZl

    Score
    10/10
    redlinesectopratdiscoveryinfostealerrattrojan

    • RedLine

      RedLine Stealer is a malware family written in C#, first appearing in early 2020.

      infostealerredline

    • RedLine payload

    • Redline family

      redline

    • SectopRAT

      SectopRAT is a remote access trojan first seen in November 2019.

      trojanratsectoprat

    • SectopRAT payload

    • Sectoprat family

      sectoprat
    behavioral11behavioral12

MITRE ATT&CK Enterprise v15

Tasks