Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240221-en
  • submitted
    06/04/2024, 05:30

General

  • Target

    615c4352821566e4b3d5264bca6ac0d6e16c64027e464538cc84ba7c3c063b2a.exe

  • Size

    342KB

  • MD5

    cc712c25984bcf46182a4fa386f39a68

  • SHA1

    86ab5baa6963c203d9ab43dd317a4984cd91bd1f

  • SHA256

    615c4352821566e4b3d5264bca6ac0d6e16c64027e464538cc84ba7c3c063b2a

  • SHA512

    a6d6d198363b20a095e17f0577fb358822910cf6a47c6be459e60deaa15380a663225350a0f97812a6213e45ab2835ae3f07d6b06639fe44ed86ce7ef79a0113

  • SSDEEP

    6144:TnxvOxqTdkXAyVG2byslJyDPzM9TfBw/Mom9VcurkJbY:TxvOxqxkXAgd0zKTJw/MoY1mY

Malware Config

Extracted

Family

stealc

Botnet

default8

C2

http://185.172.128.209

Attributes
  • url_path

    /3cd2b41cbde8fc9c.php

Signatures

  • Stealc

    Stealc is an infostealer written in C++.

  • Stealc family
  • Downloads MZ/PE file 4 IoCs
  • Executes dropped EXE 3 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 3 TTPs

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

  • Unsecured Credentials: Credentials In Files 1 TTPs

    Steal credentials from unsecured files.

  • 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 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • 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 25 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 7 IoCs
  • Suspicious use of SendNotifyMessage 7 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\615c4352821566e4b3d5264bca6ac0d6e16c64027e464538cc84ba7c3c063b2a.exe
    "C:\Users\Admin\AppData\Local\Temp\615c4352821566e4b3d5264bca6ac0d6e16c64027e464538cc84ba7c3c063b2a.exe"
    1⤵
    • Downloads MZ/PE file
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1364
    • C:\Users\Admin\AppData\Local\Temp\u11w.0.exe
      "C:\Users\Admin\AppData\Local\Temp\u11w.0.exe"
      2⤵
      • Downloads MZ/PE file
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4616
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\KFIJJEGHDA.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1036
        • C:\Users\Admin\AppData\Local\Temp\KFIJJEGHDA.exe
          "C:\Users\Admin\AppData\Local\Temp\KFIJJEGHDA.exe"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2132
          • 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\KFIJJEGHDA.exe
            5⤵
            • System Location Discovery: System Language Discovery
            • System Network Configuration Discovery: Internet Connection Discovery
            • Suspicious use of WriteProcessMemory
            PID:3388
            • C:\Windows\SysWOW64\PING.EXE
              ping 2.2.2.2 -n 1 -w 3000
              6⤵
              • System Location Discovery: System Language Discovery
              • System Network Configuration Discovery: Internet Connection Discovery
              • Runs ping.exe
              PID:2584
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4616 -s 2516
        3⤵
        • Program crash
        PID:3888
    • C:\Users\Admin\AppData\Local\Temp\u11w.1.exe
      "C:\Users\Admin\AppData\Local\Temp\u11w.1.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Checks SCSI registry key(s)
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:4148
      • C:\Users\Admin\AppData\Local\Temp\iolo\dm\SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
        "C:\Users\Admin\AppData\Local\Temp\iolo\dm\SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe" /eieci=11A12794-499E-4FA0-A281-A9A9AA8B2685 /eipi=5488CB36-BE62-4606-B07B-2EE938868BD1
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4888
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1364 -s 1164
      2⤵
      • Program crash
      PID:1264
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1364 -ip 1364
    1⤵
      PID:1572
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4616 -ip 4616
      1⤵
        PID:4592

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            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\Temp\KFIJJEGHDA.exe

              Filesize

              106KB

              MD5

              fe380780b5c35bd6d54541791151c2be

              SHA1

              7fe3a583cf91474c733f85cebf3c857682e269e1

              SHA256

              b64a84d1f88e4e78464a1901c1cb5bbd5f00bb73203d719e64e072157a087b53

              SHA512

              ba05ba8aa13c4bc1cf98fbf6c08b021e8b19354098e0397fc8e1e5d3dcce367c1063203f24e50d0973193f6535681d0a43486e5dade5d112853b7a2fe8739b6c

            • C:\Users\Admin\AppData\Local\Temp\iolo\dm\ioloDMLog.txt

              Filesize

              2KB

              MD5

              2b13ead52cce1a9ce8e716763e83b022

              SHA1

              581607a7721a60652ea8fa1c12e7644630fc2378

              SHA256

              4f244e5c4ff3b68c6651c9e5bb938b5bcf0b39d975f5e80a057acbb8b429c791

              SHA512

              136c1de97b6181e6e9fd8646652ac19b6e13c1b3df0645884f18f8de7bf69d595c6e501dfb78c900708f64b27212ad502f6aa83e25b36118db6e9d2123d1efba

            • C:\Users\Admin\AppData\Local\Temp\u11w.0.exe

              Filesize

              200KB

              MD5

              e4ff41258b1e13fc1a0cf33f83505c5b

              SHA1

              c41a64aa8b5d921cf755d72dfd624066cbbdf6d8

              SHA256

              0d19b90b35d268308253e621b1b3500b1d1dd98e5f72929ba6f78961423ca594

              SHA512

              520a2c6a74f42743373e29c3aef59618e306a10a1f9ffec27990ed7533856bcc0ba8ce3174ee668418fd8325cf9ef664df29026238e21f4d234f4e7a25d0239a

            • C:\Users\Admin\AppData\Local\Temp\u11w.1.exe

              Filesize

              4.6MB

              MD5

              397926927bca55be4a77839b1c44de6e

              SHA1

              e10f3434ef3021c399dbba047832f02b3c898dbd

              SHA256

              4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

              SHA512

              cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

            • memory/1364-5-0x0000000002E10000-0x0000000002F10000-memory.dmp

              Filesize

              1024KB

            • memory/1364-31-0x0000000000400000-0x0000000002B7F000-memory.dmp

              Filesize

              39.5MB

            • memory/1364-36-0x0000000000400000-0x0000000002B7F000-memory.dmp

              Filesize

              39.5MB

            • memory/1364-3-0x0000000000400000-0x0000000002B7F000-memory.dmp

              Filesize

              39.5MB

            • memory/1364-4-0x0000000000400000-0x0000000002B7F000-memory.dmp

              Filesize

              39.5MB

            • memory/1364-7-0x0000000004A30000-0x0000000004A9C000-memory.dmp

              Filesize

              432KB

            • memory/1364-1-0x0000000002E10000-0x0000000002F10000-memory.dmp

              Filesize

              1024KB

            • memory/1364-2-0x0000000004A30000-0x0000000004A9C000-memory.dmp

              Filesize

              432KB

            • memory/2132-201-0x00000000057D0000-0x00000000057E0000-memory.dmp

              Filesize

              64KB

            • memory/2132-182-0x0000000000C80000-0x0000000000CA0000-memory.dmp

              Filesize

              128KB

            • memory/2132-186-0x00000000718B0000-0x0000000072061000-memory.dmp

              Filesize

              7.7MB

            • memory/2132-202-0x00000000718B0000-0x0000000072061000-memory.dmp

              Filesize

              7.7MB

            • memory/4148-32-0x00000000028B0000-0x00000000028B1000-memory.dmp

              Filesize

              4KB

            • memory/4148-118-0x0000000000400000-0x00000000008AD000-memory.dmp

              Filesize

              4.7MB

            • memory/4148-101-0x0000000000400000-0x00000000008AD000-memory.dmp

              Filesize

              4.7MB

            • memory/4616-34-0x0000000002D70000-0x0000000002E70000-memory.dmp

              Filesize

              1024KB

            • memory/4616-119-0x0000000000400000-0x0000000002B5B000-memory.dmp

              Filesize

              39.4MB

            • memory/4616-193-0x0000000000400000-0x0000000002B5B000-memory.dmp

              Filesize

              39.4MB

            • memory/4616-100-0x0000000000400000-0x0000000002B5B000-memory.dmp

              Filesize

              39.4MB

            • memory/4616-191-0x0000000002D70000-0x0000000002E70000-memory.dmp

              Filesize

              1024KB

            • memory/4616-57-0x0000000061E00000-0x0000000061EF3000-memory.dmp

              Filesize

              972KB

            • memory/4616-37-0x0000000000400000-0x0000000002B5B000-memory.dmp

              Filesize

              39.4MB

            • memory/4616-35-0x0000000004860000-0x0000000004887000-memory.dmp

              Filesize

              156KB

            • memory/4888-163-0x0000026D8C580000-0x0000026D8C5A4000-memory.dmp

              Filesize

              144KB

            • memory/4888-187-0x0000026DA5C50000-0x0000026DA5C5A000-memory.dmp

              Filesize

              40KB

            • memory/4888-165-0x0000026DA52B0000-0x0000026DA5362000-memory.dmp

              Filesize

              712KB

            • memory/4888-167-0x0000026DA5360000-0x0000026DA53DA000-memory.dmp

              Filesize

              488KB

            • memory/4888-168-0x0000026DA53E0000-0x0000026DA5442000-memory.dmp

              Filesize

              392KB

            • memory/4888-169-0x0000026DA54C0000-0x0000026DA5536000-memory.dmp

              Filesize

              472KB

            • memory/4888-166-0x0000026D8C5D0000-0x0000026D8C5FA000-memory.dmp

              Filesize

              168KB

            • memory/4888-170-0x0000026D8AC50000-0x0000026D8AC5A000-memory.dmp

              Filesize

              40KB

            • memory/4888-174-0x0000026DA5540000-0x0000026DA5840000-memory.dmp

              Filesize

              3.0MB

            • memory/4888-162-0x0000026D8AC90000-0x0000026D8ACA4000-memory.dmp

              Filesize

              80KB

            • memory/4888-161-0x0000026D8ACE0000-0x0000026D8ACEC000-memory.dmp

              Filesize

              48KB

            • memory/4888-184-0x0000026DA5BF0000-0x0000026DA5C28000-memory.dmp

              Filesize

              224KB

            • memory/4888-183-0x0000026DA5950000-0x0000026DA5958000-memory.dmp

              Filesize

              32KB

            • memory/4888-160-0x0000026D8AC80000-0x0000026D8AC90000-memory.dmp

              Filesize

              64KB

            • memory/4888-185-0x0000026DA59A0000-0x0000026DA59AE000-memory.dmp

              Filesize

              56KB

            • memory/4888-164-0x0000026D8C5B0000-0x0000026D8C5BA000-memory.dmp

              Filesize

              40KB

            • memory/4888-190-0x0000026D8AC70000-0x0000026D8AC80000-memory.dmp

              Filesize

              64KB

            • memory/4888-189-0x0000026DA5C60000-0x0000026DA5C82000-memory.dmp

              Filesize

              136KB

            • memory/4888-188-0x0000026D8AC70000-0x0000026D8AC80000-memory.dmp

              Filesize

              64KB

            • memory/4888-158-0x0000026DA4FF0000-0x0000026DA5100000-memory.dmp

              Filesize

              1.1MB

            • memory/4888-192-0x0000026DAA220000-0x0000026DAA748000-memory.dmp

              Filesize

              5.2MB

            • memory/4888-149-0x0000026D8AC70000-0x0000026D8AC80000-memory.dmp

              Filesize

              64KB

            • memory/4888-198-0x0000026DA9840000-0x0000026DA9890000-memory.dmp

              Filesize

              320KB

            • memory/4888-199-0x0000026DA5C90000-0x0000026DA5C9C000-memory.dmp

              Filesize

              48KB

            • memory/4888-140-0x0000026D86F00000-0x0000026D8A7F8000-memory.dmp

              Filesize

              57.0MB

            • memory/4888-123-0x00007FF99AD60000-0x00007FF99B822000-memory.dmp

              Filesize

              10.8MB

            • memory/4888-203-0x0000026DA9890000-0x0000026DA98B2000-memory.dmp

              Filesize

              136KB

            • memory/4888-204-0x0000026DA97F0000-0x0000026DA980E000-memory.dmp

              Filesize

              120KB

            • memory/4888-206-0x00007FF99AD60000-0x00007FF99B822000-memory.dmp

              Filesize

              10.8MB

            • memory/4888-207-0x0000026D8AC70000-0x0000026D8AC80000-memory.dmp

              Filesize

              64KB

            • memory/4888-208-0x0000026D8AC70000-0x0000026D8AC80000-memory.dmp

              Filesize

              64KB

            • memory/4888-209-0x0000026D8AC70000-0x0000026D8AC80000-memory.dmp

              Filesize

              64KB