Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16-05-2024 10:45

General

  • Target

    01bc3e1b8cbd5fb66f32536422fadecc7fbf1510427be58036dda38248efaac1.exe

  • Size

    373KB

  • MD5

    6646ce0700d19a7de14da68ee446ba30

  • SHA1

    38b511346413c74967eeca1a0c50cf084c7e6d8c

  • SHA256

    01bc3e1b8cbd5fb66f32536422fadecc7fbf1510427be58036dda38248efaac1

  • SHA512

    fab4269cea37ed76ca9e29145fc7c1d3b69e4ac38318026c93e8c47a564ac307d17a4b73cb1cebddbf5106abb7165ae2aac622d8aa22c287a4b48b7f0b05c8c2

  • SSDEEP

    6144:GdiHaAVjjHTJvO5rWNmgKlJcB9BRcCwJJxDOejznC3lP6v2sbnz533+S9I:skaAVjL9vO5UmgGJc9KywnCJsbn8S9I

Malware Config

Extracted

Family

stealc

Botnet

default100

C2

http://185.172.128.150

Attributes
  • url_path

    /c698e1bc8a2f5e6d.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 2 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 2 IoCs
  • 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.

  • 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 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\01bc3e1b8cbd5fb66f32536422fadecc7fbf1510427be58036dda38248efaac1.exe
    "C:\Users\Admin\AppData\Local\Temp\01bc3e1b8cbd5fb66f32536422fadecc7fbf1510427be58036dda38248efaac1.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:208
    • C:\Users\Admin\AppData\Local\Temp\u5s.0.exe
      "C:\Users\Admin\AppData\Local\Temp\u5s.0.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      PID:2636
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2636 -s 2380
        3⤵
        • Program crash
        PID:4740
    • C:\Users\Admin\AppData\Local\Temp\u5s.1.exe
      "C:\Users\Admin\AppData\Local\Temp\u5s.1.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Checks SCSI registry key(s)
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:3500
      • 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:4980
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 208 -s 976
      2⤵
      • Program crash
      PID:3616
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 208 -ip 208
    1⤵
      PID:4316
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 2636 -ip 2636
      1⤵
        PID:1048

      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\Temp\iolo\dm\ioloDMLog.txt

        Filesize

        3KB

        MD5

        d85f8fda65d28fd26a1bfe9601cc5ddf

        SHA1

        db2173b5b81c815edfb19cc937dae4b0916135e4

        SHA256

        bad4bc4568446f1c748237f623821f23693c914540cbe4a5e290292a87a50c99

        SHA512

        a639fabe547393873170b8fd401b8f07297f7bd4f78f652f05a35291bf5af62cd539ce779eef67e70c811e00fc1eefdcb22bc78e1806b21488a24975f30f06c5

      • C:\Users\Admin\AppData\Local\Temp\u5s.0.exe

        Filesize

        239KB

        MD5

        431c601846123a7b4aa67d75e31a3dfd

        SHA1

        0704a6551c01b3b5744e7b743b33ffa5be2b4ced

        SHA256

        0a9eab89753e07a01b1c5e0197acefea9cc05e5f7829823f811e7aa1d7b817b7

        SHA512

        87a0f6eb99baf620b25216ba491f4891154224ad44ecbbe209c5189585d4cc8abea25ef7b34d78608f074c00ce76374fe49252d76b693521363aced52e4cda27

      • C:\Users\Admin\AppData\Local\Temp\u5s.1.exe

        Filesize

        4.6MB

        MD5

        397926927bca55be4a77839b1c44de6e

        SHA1

        e10f3434ef3021c399dbba047832f02b3c898dbd

        SHA256

        4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

        SHA512

        cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

      • memory/208-67-0x0000000000400000-0x000000000046F000-memory.dmp

        Filesize

        444KB

      • memory/208-107-0x0000000000400000-0x00000000004A7000-memory.dmp

        Filesize

        668KB

      • memory/208-59-0x00000000005D0000-0x00000000006D0000-memory.dmp

        Filesize

        1024KB

      • memory/208-60-0x0000000000550000-0x00000000005BC000-memory.dmp

        Filesize

        432KB

      • memory/208-1-0x00000000005D0000-0x00000000006D0000-memory.dmp

        Filesize

        1024KB

      • memory/208-2-0x0000000000550000-0x00000000005BC000-memory.dmp

        Filesize

        432KB

      • memory/208-14-0x0000000000400000-0x00000000004A7000-memory.dmp

        Filesize

        668KB

      • memory/208-108-0x0000000000400000-0x000000000046F000-memory.dmp

        Filesize

        444KB

      • memory/208-3-0x0000000000400000-0x000000000046F000-memory.dmp

        Filesize

        444KB

      • memory/2636-15-0x0000000061E00000-0x0000000061EF3000-memory.dmp

        Filesize

        972KB

      • memory/2636-13-0x0000000000400000-0x0000000000793000-memory.dmp

        Filesize

        3.6MB

      • memory/2636-113-0x0000000000400000-0x0000000000793000-memory.dmp

        Filesize

        3.6MB

      • memory/2636-68-0x0000000000400000-0x0000000000793000-memory.dmp

        Filesize

        3.6MB

      • memory/2636-139-0x0000000000400000-0x0000000000793000-memory.dmp

        Filesize

        3.6MB

      • memory/2636-54-0x0000000000400000-0x0000000000793000-memory.dmp

        Filesize

        3.6MB

      • memory/3500-152-0x0000000000400000-0x00000000008AD000-memory.dmp

        Filesize

        4.7MB

      • memory/3500-142-0x0000000000400000-0x00000000008AD000-memory.dmp

        Filesize

        4.7MB

      • memory/4980-164-0x000001FDF1E10000-0x000001FDF1E1A000-memory.dmp

        Filesize

        40KB

      • memory/4980-180-0x000001FDF84B0000-0x000001FDF84BC000-memory.dmp

        Filesize

        48KB

      • memory/4980-155-0x000001FDD7C00000-0x000001FDD7C10000-memory.dmp

        Filesize

        64KB

      • memory/4980-156-0x000001FDD7C50000-0x000001FDD7C5C000-memory.dmp

        Filesize

        48KB

      • memory/4980-157-0x000001FDD7C40000-0x000001FDD7C54000-memory.dmp

        Filesize

        80KB

      • memory/4980-158-0x000001FDF1DF0000-0x000001FDF1E14000-memory.dmp

        Filesize

        144KB

      • memory/4980-159-0x000001FDD9500000-0x000001FDD950A000-memory.dmp

        Filesize

        40KB

      • memory/4980-160-0x000001FDF2D50000-0x000001FDF2D7A000-memory.dmp

        Filesize

        168KB

      • memory/4980-161-0x000001FDF3110000-0x000001FDF31C2000-memory.dmp

        Filesize

        712KB

      • memory/4980-162-0x000001FDF3210000-0x000001FDF3260000-memory.dmp

        Filesize

        320KB

      • memory/4980-182-0x000001FDF84F0000-0x000001FDF850E000-memory.dmp

        Filesize

        120KB

      • memory/4980-154-0x000001FDF2EC0000-0x000001FDF2FCA000-memory.dmp

        Filesize

        1.0MB

      • memory/4980-171-0x000001FDF75C0000-0x000001FDF75F8000-memory.dmp

        Filesize

        224KB

      • memory/4980-170-0x000001FDF7C80000-0x000001FDF7C88000-memory.dmp

        Filesize

        32KB

      • memory/4980-168-0x000001FDF3260000-0x000001FDF3560000-memory.dmp

        Filesize

        3.0MB

      • memory/4980-172-0x000001FDF7590000-0x000001FDF759E000-memory.dmp

        Filesize

        56KB

      • memory/4980-173-0x000001FDF75B0000-0x000001FDF75B8000-memory.dmp

        Filesize

        32KB

      • memory/4980-174-0x000001FDF8730000-0x000001FDF873A000-memory.dmp

        Filesize

        40KB

      • memory/4980-175-0x000001FDF8750000-0x000001FDF87B2000-memory.dmp

        Filesize

        392KB

      • memory/4980-176-0x000001FDF87B0000-0x000001FDF87D2000-memory.dmp

        Filesize

        136KB

      • memory/4980-177-0x000001FDF8D00000-0x000001FDF9228000-memory.dmp

        Filesize

        5.2MB

      • memory/4980-153-0x000001FDD3F90000-0x000001FDD77C4000-memory.dmp

        Filesize

        56.2MB

      • memory/4980-181-0x000001FDF8590000-0x000001FDF8606000-memory.dmp

        Filesize

        472KB

      • memory/4980-163-0x000001FDF31C0000-0x000001FDF31E2000-memory.dmp

        Filesize

        136KB