Analysis

  • max time kernel
    114s
  • max time network
    163s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/04/2024, 19:30

General

  • Target

    03dbee406c07f96049083a0bab70a05d16be0b261f258f45056e8a2ada41b22b.exe

  • Size

    297KB

  • MD5

    c143cd1349493637a4b0245a7657047c

  • SHA1

    71db6b6454570fd15c4d236cf9052d8d42080875

  • SHA256

    03dbee406c07f96049083a0bab70a05d16be0b261f258f45056e8a2ada41b22b

  • SHA512

    746b811368b67d54333117b015112d6ede3255850b806106c007c88aa6839ae0f7dfa03e8c4c8e23e8c7a9cf7a24b3dad8bbca3a9ea282a22116f01ff784cd31

  • SSDEEP

    3072:CZYA/velywZlYYrDIsh+V9fiXhGF/1I10q4dsJpGVPiDnyqQSI/itMTl:C+Fhrtm96i4F4QpNnQS4iMT

Malware Config

Extracted

Family

stealc

C2

http://185.172.128.209

Attributes
  • url_path

    /3cd2b41cbde8fc9c.php

Signatures

  • 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 1 IoCs
  • Loads dropped DLL 2 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.

  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\03dbee406c07f96049083a0bab70a05d16be0b261f258f45056e8a2ada41b22b.exe
    "C:\Users\Admin\AppData\Local\Temp\03dbee406c07f96049083a0bab70a05d16be0b261f258f45056e8a2ada41b22b.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1240
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\AKJDAEGCAF.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2836
      • C:\Users\Admin\AppData\Local\Temp\AKJDAEGCAF.exe
        "C:\Users\Admin\AppData\Local\Temp\AKJDAEGCAF.exe"
        3⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:3448
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /C ping 2.2.2.2 -n 1 -w 3000 > Nul & Del C:\Users\Admin\AppData\Local\Temp\AKJDAEGCAF.exe
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:4756
          • C:\Windows\SysWOW64\PING.EXE
            ping 2.2.2.2 -n 1 -w 3000
            5⤵
            • Runs ping.exe
            PID:840
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1240 -s 2352
      2⤵
      • Program crash
      PID:3752
  • 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=3304 --field-trial-handle=2260,i,3303482231723870786,2954015409682154873,262144 --variations-seed-version /prefetch:3
    1⤵
      PID:1012
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1240 -ip 1240
      1⤵
        PID:4588
      • 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=3512 --field-trial-handle=2260,i,3303482231723870786,2954015409682154873,262144 --variations-seed-version /prefetch:8
        1⤵
          PID:1424

        Network

              MITRE ATT&CK Enterprise v15

              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\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\AKJDAEGCAF.exe

                Filesize

                106KB

                MD5

                fe380780b5c35bd6d54541791151c2be

                SHA1

                7fe3a583cf91474c733f85cebf3c857682e269e1

                SHA256

                b64a84d1f88e4e78464a1901c1cb5bbd5f00bb73203d719e64e072157a087b53

                SHA512

                ba05ba8aa13c4bc1cf98fbf6c08b021e8b19354098e0397fc8e1e5d3dcce367c1063203f24e50d0973193f6535681d0a43486e5dade5d112853b7a2fe8739b6c

              • memory/1240-84-0x0000000000400000-0x0000000000869000-memory.dmp

                Filesize

                4.4MB

              • memory/1240-103-0x0000000000400000-0x0000000000869000-memory.dmp

                Filesize

                4.4MB

              • memory/1240-59-0x0000000000400000-0x0000000000869000-memory.dmp

                Filesize

                4.4MB

              • memory/1240-5-0x0000000061E00000-0x0000000061EF3000-memory.dmp

                Filesize

                972KB

              • memory/1240-1-0x0000000000AF0000-0x0000000000BF0000-memory.dmp

                Filesize

                1024KB

              • memory/1240-4-0x0000000000400000-0x0000000000869000-memory.dmp

                Filesize

                4.4MB

              • memory/1240-3-0x0000000000400000-0x0000000000869000-memory.dmp

                Filesize

                4.4MB

              • memory/1240-60-0x0000000000AF0000-0x0000000000BF0000-memory.dmp

                Filesize

                1024KB

              • memory/1240-2-0x00000000025B0000-0x00000000025D7000-memory.dmp

                Filesize

                156KB

              • memory/1240-115-0x0000000000400000-0x0000000000869000-memory.dmp

                Filesize

                4.4MB

              • memory/3448-111-0x0000000071F80000-0x0000000072730000-memory.dmp

                Filesize

                7.7MB

              • memory/3448-112-0x0000000005360000-0x0000000005370000-memory.dmp

                Filesize

                64KB

              • memory/3448-110-0x0000000000890000-0x00000000008B0000-memory.dmp

                Filesize

                128KB

              • memory/3448-116-0x0000000071F80000-0x0000000072730000-memory.dmp

                Filesize

                7.7MB