Analysis

  • max time kernel
    142s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-04-2024 16:45

General

  • Target

    48ed48f4db001bd7e5a5bfa03b7c8b6cb20aa22593ad8454e8d54c65234b8d73.exe

  • Size

    451KB

  • MD5

    9d7c0fcbfea97ac283f4e68707245250

  • SHA1

    7d4f5822aee7512b308db3baaeb5d0557abf2469

  • SHA256

    48ed48f4db001bd7e5a5bfa03b7c8b6cb20aa22593ad8454e8d54c65234b8d73

  • SHA512

    b7377ae1af7f6867ac1a5ae67c8a9ccbcaffb41f201a0f57c9b792cb4515571cd50ff3718057e431fb31e673b85102fea8c82a58821ee84d22d0d5e28657bdd2

  • SSDEEP

    6144:EbizKU6CpA9+9+HDs15JInfn07l7Ro9+mdb7nrAUYj9To2BwMt2jBse7NU:EbMKUHmcQs7Po9+esUYjq2SUUTBU

Malware Config

Extracted

Family

stealc

C2

http://185.172.128.151

Attributes
  • url_path

    /7043a0c6a68d9c65.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
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 3 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • 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
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 22 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\48ed48f4db001bd7e5a5bfa03b7c8b6cb20aa22593ad8454e8d54c65234b8d73.exe
    "C:\Users\Admin\AppData\Local\Temp\48ed48f4db001bd7e5a5bfa03b7c8b6cb20aa22593ad8454e8d54c65234b8d73.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4972
    • C:\Users\Admin\AppData\Local\Temp\u3u4.0.exe
      "C:\Users\Admin\AppData\Local\Temp\u3u4.0.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1640
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\u3u4.0.exe" & del "C:\ProgramData\*.dll"" & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:672
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 5
          4⤵
          • Delays execution with timeout.exe
          PID:2276
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1640 -s 2436
        3⤵
        • Program crash
        PID:2200
    • C:\Users\Admin\AppData\Local\Temp\u3u4.2\run.exe
      "C:\Users\Admin\AppData\Local\Temp\u3u4.2\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:2620
      • 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:2972
        • 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:2300
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4972 -s 1144
      2⤵
      • Program crash
      PID:4248
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --no-appcompat-clear --mojo-platform-channel-handle=3556 --field-trial-handle=2692,i,8678872182442199182,12502579059484928042,262144 --variations-seed-version /prefetch:3
    1⤵
      PID:4632
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4972 -ip 4972
      1⤵
        PID:1932
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1640 -ip 1640
        1⤵
          PID:1460
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4228 --field-trial-handle=2692,i,8678872182442199182,12502579059484928042,262144 --variations-seed-version /prefetch:8
          1⤵
            PID:1520

          Network

          MITRE ATT&CK Matrix ATT&CK v13

          Credential Access

          Unsecured Credentials

          3
          T1552

          Credentials In Files

          3
          T1552.001

          Discovery

          Query Registry

          3
          T1012

          System Information Discovery

          3
          T1082

          Collection

          Data from Local System

          3
          T1005

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\ProgramData\Are.docx
            Filesize

            11KB

            MD5

            a33e5b189842c5867f46566bdbf7a095

            SHA1

            e1c06359f6a76da90d19e8fd95e79c832edb3196

            SHA256

            5abf8e3d1f78de7b09d7f6fb87f9e80e60caacf13ef3c1289665653dacd7c454

            SHA512

            f2ad3812ec9b915e9618539b0f103f2e9acaad25fbbacd84941c954ce070af231324e83a4621e951c1dbae8d40d50410954e40dd52bbd46e34c54b0d1957407b

          • C:\ProgramData\mozglue.dll
            Filesize

            593KB

            MD5

            c8fd9be83bc728cc04beffafc2907fe9

            SHA1

            95ab9f701e0024cedfbd312bcfe4e726744c4f2e

            SHA256

            ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

            SHA512

            fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

          • C:\ProgramData\nss3.dll
            Filesize

            2.0MB

            MD5

            1cc453cdf74f31e4d913ff9c10acdde2

            SHA1

            6e85eae544d6e965f15fa5c39700fa7202f3aafe

            SHA256

            ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

            SHA512

            dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

          • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network\Network Persistent State
            Filesize

            1KB

            MD5

            d61c464e416cf1e5e6c62ed81391a182

            SHA1

            8152e76b219ab7782d98d0c2d30e11fbd6f21000

            SHA256

            9d60ef0f276673375576b5f1754b5d347ade4d1c3235afa14cecb5a7c1547dae

            SHA512

            30f8b300b470c1bda2bd69fb364390ef8d4627f6b67dcff2fa38ce08f9efc869e67117130f04f3936f376ad51f6a995ada9256363a1db1dbede3ae87391eadf1

          • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network\SCT Auditing Pending Reports
            Filesize

            2B

            MD5

            d751713988987e9331980363e24189ce

            SHA1

            97d170e1550eee4afc0af065b78cda302a97674c

            SHA256

            4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945

            SHA512

            b25b294cb4deb69ea00a4c3cf3113904801b6015e5956bd019a8570b1fe1d6040e944ef3cdee16d0a46503ca6e659a25f21cf9ceddc13f352a3c98138c15d6af

          • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network\Sdch Dictionaries
            Filesize

            40B

            MD5

            20d4b8fa017a12a108c87f540836e250

            SHA1

            1ac617fac131262b6d3ce1f52f5907e31d5f6f00

            SHA256

            6028bd681dbf11a0a58dde8a0cd884115c04caa59d080ba51bde1b086ce0079d

            SHA512

            507b2b8a8a168ff8f2bdafa5d9d341c44501a5f17d9f63f3d43bd586bc9e8ae33221887869fa86f845b7d067cb7d2a7009efd71dda36e03a40a74fee04b86856

          • C:\Users\Admin\AppData\Local\Temp\31ffbcc4
            Filesize

            1.4MB

            MD5

            899ec2ed32e76f44aa37f39392c77109

            SHA1

            2c769d9b4d00b45308cdd9e3dc28c57d7fc97f85

            SHA256

            d6535ea691a2ff48162ff443ddccce6c3a4874eaca0b44e804d3e9bc51f186da

            SHA512

            106abade8dd022a790baeec23aec91f79392e49300b3c0c874b6730e1158afc8f3c3d216694f3113a8cd7e5f6854fe5fa8da87ae1ced2894d8b2ebff586420d0

          • C:\Users\Admin\AppData\Local\Temp\u3u4.0.exe
            Filesize

            307KB

            MD5

            d1e360f356f8ac430b5fed34b3a0a660

            SHA1

            7aab5d765bc1c3d29510804bb5dfa14a47722218

            SHA256

            b708baa9b529adc2da4c9dfeef1a7c62d1a9cc231cb82561334de8c0a99cbbdb

            SHA512

            705060b9a70166724a68000f39142cee88d0951b33612f03619f6c40a2c9561a98f9bcdd5e210998d3cef9107b49cc560da22f7749c18a59d4525b593c2166fd

          • C:\Users\Admin\AppData\Local\Temp\u3u4.1.zip
            Filesize

            3.7MB

            MD5

            78d3ca6355c93c72b494bb6a498bf639

            SHA1

            2fa4e5df74bfe75c207c881a1b0d3bc1c62c8b0e

            SHA256

            a1dd547a63b256aa6a16871ed03f8b025226f7617e67b8817a08444df077b001

            SHA512

            1b2df7bee2514aee7efd3579f5dd33c76b40606d07dba69a34c45747662fad61174db4931bca02b058830107959205e889fee74f8ccc9f6e03f9fd111761f4ea

          • C:\Users\Admin\AppData\Local\Temp\u3u4.2\UIxMarketPlugin.dll
            Filesize

            1.6MB

            MD5

            d1ba9412e78bfc98074c5d724a1a87d6

            SHA1

            0572f98d78fb0b366b5a086c2a74cc68b771d368

            SHA256

            cbcea8f28d8916219d1e8b0a8ca2db17e338eb812431bc4ad0cb36c06fd67f15

            SHA512

            8765de36d3824b12c0a4478c31b985878d4811bd0e5b6fba4ea07f8c76340bd66a2da3490d4871b95d9a12f96efc25507dfd87f431de211664dbe9a9c914af6f

          • C:\Users\Admin\AppData\Local\Temp\u3u4.2\bunch.dat
            Filesize

            1.3MB

            MD5

            1e8237d3028ab52821d69099e0954f97

            SHA1

            30a6ae353adda0c471c6ed5b7a2458b07185abf2

            SHA256

            9387488f9d338e211be2cb45109bf590a5070180bc0d4a703f70d3cb3c4e1742

            SHA512

            a6406d7c18694ee014d59df581f1f76e980b68e3361ae680dc979606a423eba48d35e37f143154dd97fe5f066baf0ea51a2e9f8bc822d593e1cba70ead6559f3

          • C:\Users\Admin\AppData\Local\Temp\u3u4.2\relay.dll
            Filesize

            1.5MB

            MD5

            10d51becd0bbce0fab147ff9658c565e

            SHA1

            4689a18112ff876d3c066bc8c14a08fd6b7b7a4a

            SHA256

            7b2db9c88f60ed6dd24b1dec321a304564780fdb191a96ec35c051856128f1ed

            SHA512

            29faf493bb28f7842c905adc5312f31741effb09f841059b53d73b22aea2c4d41d73db10bbf37703d6aeb936ffacbc756a3cc85ba3c0b6a6863ef4d27fefcd29

          • C:\Users\Admin\AppData\Local\Temp\u3u4.2\run.exe
            Filesize

            2.4MB

            MD5

            9fb4770ced09aae3b437c1c6eb6d7334

            SHA1

            fe54b31b0db8665aa5b22bed147e8295afc88a03

            SHA256

            a05b592a971fe5011554013bcfe9a4aaf9cfc633bdd1fe3a8197f213d557b8d3

            SHA512

            140fee6daf23fe8b7e441b3b4de83554af804f00ecedc421907a385ac79a63164bd9f28b4be061c2ea2262755d85e14d3a8e7dc910547837b664d78d93667256

          • C:\Users\Admin\AppData\Local\Temp\u3u4.2\whale.dbf
            Filesize

            85KB

            MD5

            a723bf46048e0bfb15b8d77d7a648c3e

            SHA1

            8952d3c34e9341e4425571e10f22b782695bb915

            SHA256

            b440170853bdb43b66497f701aee2901080326975140b095a1669cb9dee13422

            SHA512

            ca8ea2f7f3c7af21b5673a0a3f2611b6580a7ed02efa2cfd8b343eb644ff09682bde43b25ef7aab68530d5ce31dcbd252c382dd336ecb610d4c4ebde78347273

          • memory/1640-18-0x0000000000400000-0x0000000001A18000-memory.dmp
            Filesize

            22.1MB

          • memory/1640-201-0x0000000000400000-0x0000000001A18000-memory.dmp
            Filesize

            22.1MB

          • memory/1640-16-0x0000000001C00000-0x0000000001D00000-memory.dmp
            Filesize

            1024KB

          • memory/1640-194-0x0000000000400000-0x0000000001A18000-memory.dmp
            Filesize

            22.1MB

          • memory/1640-17-0x0000000001AA0000-0x0000000001AC7000-memory.dmp
            Filesize

            156KB

          • memory/1640-34-0x0000000061E00000-0x0000000061EF3000-memory.dmp
            Filesize

            972KB

          • memory/2300-211-0x00000000719F0000-0x0000000072C44000-memory.dmp
            Filesize

            18.3MB

          • memory/2300-214-0x0000000000900000-0x00000000009C6000-memory.dmp
            Filesize

            792KB

          • memory/2300-220-0x0000000004F00000-0x0000000004F0A000-memory.dmp
            Filesize

            40KB

          • memory/2300-219-0x0000000005110000-0x0000000005160000-memory.dmp
            Filesize

            320KB

          • memory/2300-218-0x0000000005090000-0x0000000005106000-memory.dmp
            Filesize

            472KB

          • memory/2300-217-0x0000000005260000-0x0000000005422000-memory.dmp
            Filesize

            1.8MB

          • memory/2300-216-0x0000000005640000-0x0000000005BE4000-memory.dmp
            Filesize

            5.6MB

          • memory/2300-215-0x0000000004FF0000-0x0000000005082000-memory.dmp
            Filesize

            584KB

          • memory/2620-195-0x0000000073530000-0x00000000736AB000-memory.dmp
            Filesize

            1.5MB

          • memory/2620-160-0x00007FF8C1A10000-0x00007FF8C1C05000-memory.dmp
            Filesize

            2.0MB

          • memory/2620-159-0x0000000073530000-0x00000000736AB000-memory.dmp
            Filesize

            1.5MB

          • memory/2972-209-0x0000000073530000-0x00000000736AB000-memory.dmp
            Filesize

            1.5MB

          • memory/2972-207-0x00007FF8C1A10000-0x00007FF8C1C05000-memory.dmp
            Filesize

            2.0MB

          • memory/4972-52-0x0000000000400000-0x0000000001A3C000-memory.dmp
            Filesize

            22.2MB

          • memory/4972-3-0x0000000000400000-0x0000000001A3C000-memory.dmp
            Filesize

            22.2MB

          • memory/4972-1-0x0000000001AE0000-0x0000000001BE0000-memory.dmp
            Filesize

            1024KB

          • memory/4972-200-0x0000000000400000-0x0000000001A3C000-memory.dmp
            Filesize

            22.2MB

          • memory/4972-199-0x0000000003690000-0x00000000036FD000-memory.dmp
            Filesize

            436KB

          • memory/4972-2-0x0000000003690000-0x00000000036FD000-memory.dmp
            Filesize

            436KB