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Analysis

  • max time kernel
    307s
  • max time network
    331s
  • platform
    windows10-1703_x64
  • resource
    win10-20230915-en
  • resource tags

    arch:x64arch:x86image:win10-20230915-enlocale:en-usos:windows10-1703-x64system
  • submitted
    13/10/2023, 04:06

General

  • Target

    007cf7cd35590b537a42ec752e75d64bf6f37315018023c6fbc63ab77560bc45.exe

  • Size

    2.5MB

  • MD5

    63ccd2218ba9abe0d8fb48d03343854b

  • SHA1

    094179e09568ee5b5316d7c70c4073bc99bd1127

  • SHA256

    007cf7cd35590b537a42ec752e75d64bf6f37315018023c6fbc63ab77560bc45

  • SHA512

    56d4973ba358df996fa17adc2c6eca8c8b04bab3c45ee3f5df77fd4f7e11a88941bd759dea6126b85e85362a08d5f4ff8a904512618ffacf5314727424eb11c5

  • SSDEEP

    49152:CL2s5FXQ4EmojLjCRELVf7Avil+dHIsLp1thIikN+6u2hs7:CpzX71oDCRAZUviAHImDqia7hs7

Malware Config

Extracted

Family

stealc

C2

http://aidandylan.top

Attributes
  • url_path

    /3886d2276f6914c4.php

rc4.plain

Signatures

  • Stealc

    Stealc is an infostealer written in C++.

  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 3 IoCs
  • 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).

  • 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 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\007cf7cd35590b537a42ec752e75d64bf6f37315018023c6fbc63ab77560bc45.exe
    "C:\Users\Admin\AppData\Local\Temp\007cf7cd35590b537a42ec752e75d64bf6f37315018023c6fbc63ab77560bc45.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:3848
    • C:\Users\Admin\AppData\Local\Temp\VPN.exe
      C:\Users\Admin\AppData\Local\Temp\VPN.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2696
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\VPN.exe" & del "C:\ProgramData\*.dll"" & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2268
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 5
          4⤵
          • Delays execution with timeout.exe
          PID:3560
    • C:\Users\Admin\AppData\Local\Temp\Broom.exe
      C:\Users\Admin\AppData\Local\Temp\Broom.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetWindowsHookEx
      PID:3344

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:\Users\Admin\AppData\Local\Temp\Broom.exe

    Filesize

    5.3MB

    MD5

    00e93456aa5bcf9f60f84b0c0760a212

    SHA1

    6096890893116e75bd46fea0b8c3921ceb33f57d

    SHA256

    ff3025f9cf19323c5972d14f00f01296d6d7a71547eca7e4016bfd0e1f27b504

    SHA512

    abd2be819c7d93bd6097155cf84eaf803e3133a7e0ca71f9d9cbc3c65e4e4a26415d2523a36adafdd19b0751e25ea1a99b8d060cad61cdfd1f79adf9cd4b4eca

  • C:\Users\Admin\AppData\Local\Temp\VPN.exe

    Filesize

    259KB

    MD5

    ad3023dae750eff5bc8fd86d62aab706

    SHA1

    d11d2e835fe74abbe6c4ade3729ab8f649075b5a

    SHA256

    eb654cd99405711166fa7fce4505be2370aa98e55cc5b351fc03c0c81b9c57aa

    SHA512

    3f09d00d6ce70935c0dbcee8c4c2fbe4f6893689382e774577c78fa52b569e2fbae9cce6e36b521aca2fd16ebb41b74d3f53c8453cdc39fcb872a67988e3054b

  • C:\Users\Admin\AppData\Local\Temp\VPN.exe

    Filesize

    259KB

    MD5

    ad3023dae750eff5bc8fd86d62aab706

    SHA1

    d11d2e835fe74abbe6c4ade3729ab8f649075b5a

    SHA256

    eb654cd99405711166fa7fce4505be2370aa98e55cc5b351fc03c0c81b9c57aa

    SHA512

    3f09d00d6ce70935c0dbcee8c4c2fbe4f6893689382e774577c78fa52b569e2fbae9cce6e36b521aca2fd16ebb41b74d3f53c8453cdc39fcb872a67988e3054b

  • \ProgramData\mozglue.dll

    Filesize

    593KB

    MD5

    c8fd9be83bc728cc04beffafc2907fe9

    SHA1

    95ab9f701e0024cedfbd312bcfe4e726744c4f2e

    SHA256

    ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

    SHA512

    fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

  • \ProgramData\nss3.dll

    Filesize

    2.0MB

    MD5

    1cc453cdf74f31e4d913ff9c10acdde2

    SHA1

    6e85eae544d6e965f15fa5c39700fa7202f3aafe

    SHA256

    ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

    SHA512

    dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

  • \Users\Admin\AppData\Local\Temp\nseDD9F.tmp\NSISdl.dll

    Filesize

    15KB

    MD5

    05f72d6a944e701217ef2eb2cc13e0ee

    SHA1

    fac99c39150ae484e4b3e0af2f4be86bb1835dde

    SHA256

    aab28914794a1cdda4561e9f2af3e006dbed220d9d6bfe049b56d0cb9b783648

    SHA512

    c87e783fc169ef01ac0d3ce29fbfbf349a2e22329df9203a1443cc2caebbe7f8282c0754740289ecca534951cb7e574bafef9ccbaa0da7c287109920ec9573eb

  • memory/2696-98-0x0000000000400000-0x00000000007CB000-memory.dmp

    Filesize

    3.8MB

  • memory/2696-75-0x0000000000400000-0x00000000007CB000-memory.dmp

    Filesize

    3.8MB

  • memory/2696-18-0x0000000000400000-0x00000000007CB000-memory.dmp

    Filesize

    3.8MB

  • memory/2696-142-0x0000000000400000-0x00000000007CB000-memory.dmp

    Filesize

    3.8MB

  • memory/2696-126-0x0000000000400000-0x00000000007CB000-memory.dmp

    Filesize

    3.8MB

  • memory/2696-28-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB

  • memory/2696-56-0x0000000000400000-0x00000000007CB000-memory.dmp

    Filesize

    3.8MB

  • memory/2696-63-0x0000000000400000-0x00000000007CB000-memory.dmp

    Filesize

    3.8MB

  • memory/2696-68-0x0000000000400000-0x00000000007CB000-memory.dmp

    Filesize

    3.8MB

  • memory/2696-17-0x00000000009C0000-0x0000000000AC0000-memory.dmp

    Filesize

    1024KB

  • memory/2696-13-0x00000000009C0000-0x0000000000AC0000-memory.dmp

    Filesize

    1024KB

  • memory/2696-103-0x0000000000400000-0x00000000007CB000-memory.dmp

    Filesize

    3.8MB

  • memory/2696-15-0x0000000000930000-0x000000000094B000-memory.dmp

    Filesize

    108KB

  • memory/2696-14-0x0000000000400000-0x00000000007CB000-memory.dmp

    Filesize

    3.8MB

  • memory/3344-16-0x0000000000BA0000-0x0000000000BA1000-memory.dmp

    Filesize

    4KB

  • memory/3344-11-0x0000000000BA0000-0x0000000000BA1000-memory.dmp

    Filesize

    4KB

  • memory/3344-27-0x0000000000400000-0x0000000000965000-memory.dmp

    Filesize

    5.4MB

  • memory/3344-19-0x0000000000400000-0x0000000000965000-memory.dmp

    Filesize

    5.4MB