Analysis

  • max time kernel
    137s
  • max time network
    140s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240412-en
  • resource tags

    arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    25-04-2024 19:46

General

  • Target

    401c20bbadaca0ae86a100929f4b21282f63e272a1ac339ca9c4b444fd8d1289.exe

  • Size

    419KB

  • MD5

    021cfa1d38a5e559b84773d533223435

  • SHA1

    c4248fac5aa6eed042d6a0cac516bc383de261f9

  • SHA256

    401c20bbadaca0ae86a100929f4b21282f63e272a1ac339ca9c4b444fd8d1289

  • SHA512

    6a940693a98cec9c049175742d4d8a97fa23c0e34b9f508418fbe6b907c507423af889dd51d1d76d322dbd1fa4bd77214473a88816763436eec92c955865b076

  • SSDEEP

    6144:X4x9GU3P66ZHxrKG1afsuXOTgm8689vFQ3kvzFI162n:X4x4U3Cggjfly2vOUrFI11

Malware Config

Extracted

Family

stealc

C2

http://185.172.128.111

Attributes
  • url_path

    /f993692117a3fda2.php

Signatures

  • SectopRAT

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

  • SectopRAT payload 1 IoCs
  • Stealc

    Stealc is an infostealer written in C++.

  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Program crash 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\401c20bbadaca0ae86a100929f4b21282f63e272a1ac339ca9c4b444fd8d1289.exe
    "C:\Users\Admin\AppData\Local\Temp\401c20bbadaca0ae86a100929f4b21282f63e272a1ac339ca9c4b444fd8d1289.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4628
    • C:\Users\Admin\AppData\Local\Temp\u3kk.0.exe
      "C:\Users\Admin\AppData\Local\Temp\u3kk.0.exe"
      2⤵
      • Executes dropped EXE
      PID:1916
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1916 -s 1240
        3⤵
        • Program crash
        PID:3084
    • C:\Users\Admin\AppData\Local\Temp\u3kk.2\run.exe
      "C:\Users\Admin\AppData\Local\Temp\u3kk.2\run.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4752
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\SysWOW64\cmd.exe
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:2580
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
          C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:572
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4628 -s 1160
      2⤵
      • Program crash
      PID:4824
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1916 -ip 1916
    1⤵
      PID:1860
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 4628 -ip 4628
      1⤵
        PID:3780

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\ccddf425

        Filesize

        1.4MB

        MD5

        f54647943dbb1dcab2776ff45e4c8b01

        SHA1

        553f5787e797dc7e068f1420751f968aee1668b0

        SHA256

        6599b9db1aaa7b7a0681bf6b924fd7e2985a4452e14de31a0976b2450d39bd06

        SHA512

        b29367618238e979330fec0376aa30c123650428e12ca715bba95d4ff8063acfcefdf2b739aa3a20338c99e813643c75cbfbb0ed562857ad897b252ce47e0ab2

      • C:\Users\Admin\AppData\Local\Temp\tmp1CCC.tmp

        Filesize

        20KB

        MD5

        42c395b8db48b6ce3d34c301d1eba9d5

        SHA1

        b7cfa3de344814bec105391663c0df4a74310996

        SHA256

        5644546ecefc6786c7be5b1a89e935e640963ccd34b130f21baab9370cb9055d

        SHA512

        7b9214db96e9bec8745b4161a41c4c0520cdda9950f0cd3f12c7744227a25d639d07c0dd68b552cf1e032181c2e4f8297747f27bad6c7447b0f415a86bd82845

      • C:\Users\Admin\AppData\Local\Temp\tmp1CEE.tmp

        Filesize

        20KB

        MD5

        22be08f683bcc01d7a9799bbd2c10041

        SHA1

        2efb6041cf3d6e67970135e592569c76fc4c41de

        SHA256

        451c2c0cf3b7cb412a05347c6e75ed8680f0d2e5f2ab0f64cc2436db9309a457

        SHA512

        0eef192b3d5abe5d2435acf54b42c729c3979e4ad0b73d36666521458043ee7df1e10386bef266d7df9c31db94fb2833152bb2798936cb2082715318ef05d936

      • C:\Users\Admin\AppData\Local\Temp\u3kk.0.exe

        Filesize

        275KB

        MD5

        609e477f1171e4ead007e05592f06ecd

        SHA1

        1438491f5054d85d918ffe2892f05a5cc2b930d1

        SHA256

        9b2c5027aaca1212afc373c13b25d60a053df5e3bfaf3558f401d58001e07907

        SHA512

        c4407460097a2494096233a31a9725c53179b55286560cdb7655fcf131e58294944703169814635ce59190183d6e496316956ee9f6abdaa3e0f3b708080c209e

      • C:\Users\Admin\AppData\Local\Temp\u3kk.1.zip

        Filesize

        3.7MB

        MD5

        78d3ca6355c93c72b494bb6a498bf639

        SHA1

        2fa4e5df74bfe75c207c881a1b0d3bc1c62c8b0e

        SHA256

        a1dd547a63b256aa6a16871ed03f8b025226f7617e67b8817a08444df077b001

        SHA512

        1b2df7bee2514aee7efd3579f5dd33c76b40606d07dba69a34c45747662fad61174db4931bca02b058830107959205e889fee74f8ccc9f6e03f9fd111761f4ea

      • C:\Users\Admin\AppData\Local\Temp\u3kk.2\UIxMarketPlugin.dll

        Filesize

        1.6MB

        MD5

        d1ba9412e78bfc98074c5d724a1a87d6

        SHA1

        0572f98d78fb0b366b5a086c2a74cc68b771d368

        SHA256

        cbcea8f28d8916219d1e8b0a8ca2db17e338eb812431bc4ad0cb36c06fd67f15

        SHA512

        8765de36d3824b12c0a4478c31b985878d4811bd0e5b6fba4ea07f8c76340bd66a2da3490d4871b95d9a12f96efc25507dfd87f431de211664dbe9a9c914af6f

      • C:\Users\Admin\AppData\Local\Temp\u3kk.2\bunch.dat

        Filesize

        1.3MB

        MD5

        1e8237d3028ab52821d69099e0954f97

        SHA1

        30a6ae353adda0c471c6ed5b7a2458b07185abf2

        SHA256

        9387488f9d338e211be2cb45109bf590a5070180bc0d4a703f70d3cb3c4e1742

        SHA512

        a6406d7c18694ee014d59df581f1f76e980b68e3361ae680dc979606a423eba48d35e37f143154dd97fe5f066baf0ea51a2e9f8bc822d593e1cba70ead6559f3

      • C:\Users\Admin\AppData\Local\Temp\u3kk.2\relay.dll

        Filesize

        1.5MB

        MD5

        10d51becd0bbce0fab147ff9658c565e

        SHA1

        4689a18112ff876d3c066bc8c14a08fd6b7b7a4a

        SHA256

        7b2db9c88f60ed6dd24b1dec321a304564780fdb191a96ec35c051856128f1ed

        SHA512

        29faf493bb28f7842c905adc5312f31741effb09f841059b53d73b22aea2c4d41d73db10bbf37703d6aeb936ffacbc756a3cc85ba3c0b6a6863ef4d27fefcd29

      • C:\Users\Admin\AppData\Local\Temp\u3kk.2\run.exe

        Filesize

        2.4MB

        MD5

        9fb4770ced09aae3b437c1c6eb6d7334

        SHA1

        fe54b31b0db8665aa5b22bed147e8295afc88a03

        SHA256

        a05b592a971fe5011554013bcfe9a4aaf9cfc633bdd1fe3a8197f213d557b8d3

        SHA512

        140fee6daf23fe8b7e441b3b4de83554af804f00ecedc421907a385ac79a63164bd9f28b4be061c2ea2262755d85e14d3a8e7dc910547837b664d78d93667256

      • C:\Users\Admin\AppData\Local\Temp\u3kk.2\whale.dbf

        Filesize

        85KB

        MD5

        a723bf46048e0bfb15b8d77d7a648c3e

        SHA1

        8952d3c34e9341e4425571e10f22b782695bb915

        SHA256

        b440170853bdb43b66497f701aee2901080326975140b095a1669cb9dee13422

        SHA512

        ca8ea2f7f3c7af21b5673a0a3f2611b6580a7ed02efa2cfd8b343eb644ff09682bde43b25ef7aab68530d5ce31dcbd252c382dd336ecb610d4c4ebde78347273

      • memory/572-135-0x0000000006370000-0x000000000689C000-memory.dmp

        Filesize

        5.2MB

      • memory/572-134-0x00000000050B0000-0x00000000050BA000-memory.dmp

        Filesize

        40KB

      • memory/572-126-0x0000000000920000-0x00000000009E6000-memory.dmp

        Filesize

        792KB

      • memory/572-122-0x0000000073B30000-0x0000000074E47000-memory.dmp

        Filesize

        19.1MB

      • memory/572-156-0x0000000073260000-0x0000000073A11000-memory.dmp

        Filesize

        7.7MB

      • memory/572-137-0x0000000005F20000-0x0000000005F86000-memory.dmp

        Filesize

        408KB

      • memory/572-128-0x0000000005140000-0x00000000051D2000-memory.dmp

        Filesize

        584KB

      • memory/572-136-0x0000000005E60000-0x0000000005E7E000-memory.dmp

        Filesize

        120KB

      • memory/572-127-0x0000000073260000-0x0000000073A11000-memory.dmp

        Filesize

        7.7MB

      • memory/572-157-0x00000000052D0000-0x00000000052E0000-memory.dmp

        Filesize

        64KB

      • memory/572-133-0x0000000005260000-0x00000000052B0000-memory.dmp

        Filesize

        320KB

      • memory/572-132-0x00000000051E0000-0x0000000005256000-memory.dmp

        Filesize

        472KB

      • memory/572-129-0x0000000005790000-0x0000000005D36000-memory.dmp

        Filesize

        5.6MB

      • memory/572-130-0x00000000052D0000-0x00000000052E0000-memory.dmp

        Filesize

        64KB

      • memory/572-131-0x00000000054B0000-0x0000000005672000-memory.dmp

        Filesize

        1.8MB

      • memory/1916-13-0x0000000000AB0000-0x0000000000BB0000-memory.dmp

        Filesize

        1024KB

      • memory/1916-14-0x0000000002490000-0x00000000024B7000-memory.dmp

        Filesize

        156KB

      • memory/1916-16-0x0000000000400000-0x0000000000846000-memory.dmp

        Filesize

        4.3MB

      • memory/1916-15-0x0000000000400000-0x0000000000846000-memory.dmp

        Filesize

        4.3MB

      • memory/2580-123-0x0000000072C30000-0x0000000072DAD000-memory.dmp

        Filesize

        1.5MB

      • memory/2580-115-0x0000000072C30000-0x0000000072DAD000-memory.dmp

        Filesize

        1.5MB

      • memory/2580-120-0x0000000072C30000-0x0000000072DAD000-memory.dmp

        Filesize

        1.5MB

      • memory/2580-119-0x0000000072C30000-0x0000000072DAD000-memory.dmp

        Filesize

        1.5MB

      • memory/2580-117-0x00007FFF8DCE0000-0x00007FFF8DEE9000-memory.dmp

        Filesize

        2.0MB

      • memory/4628-112-0x0000000002780000-0x00000000027ED000-memory.dmp

        Filesize

        436KB

      • memory/4628-17-0x0000000000400000-0x000000000086B000-memory.dmp

        Filesize

        4.4MB

      • memory/4628-111-0x0000000000400000-0x000000000086B000-memory.dmp

        Filesize

        4.4MB

      • memory/4628-3-0x0000000000400000-0x000000000086B000-memory.dmp

        Filesize

        4.4MB

      • memory/4628-2-0x0000000002780000-0x00000000027ED000-memory.dmp

        Filesize

        436KB

      • memory/4628-1-0x0000000000920000-0x0000000000A20000-memory.dmp

        Filesize

        1024KB

      • memory/4752-113-0x0000000072C30000-0x0000000072DAD000-memory.dmp

        Filesize

        1.5MB

      • memory/4752-110-0x0000000072C30000-0x0000000072DAD000-memory.dmp

        Filesize

        1.5MB

      • memory/4752-104-0x00007FFF8DCE0000-0x00007FFF8DEE9000-memory.dmp

        Filesize

        2.0MB

      • memory/4752-103-0x0000000072C30000-0x0000000072DAD000-memory.dmp

        Filesize

        1.5MB