Analysis

  • max time kernel
    117s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    15/02/2025, 16:31

General

  • Target

    0OTD8_random.exe

  • Size

    1.8MB

  • MD5

    411303148c2c132ec3b30a97c1936cf9

  • SHA1

    9693f9e29924d1bbb1bf87f10707c74d1df7e996

  • SHA256

    dc9c553a3ff7574b1007f70a911f10ca22590a7661dfb84a25c5009d1b564fbb

  • SHA512

    f27dce51cbed73bb3f1b8fb977d3168f5778bab24b4c762f16333adfb9d93ce1b476a3277d994ee429781919385846c68c618c5d72b38ca6a7bc82f9c658dbdd

  • SSDEEP

    24576:5oplyMtRrcEVZQuiws76pon4/JaaT2cEMeUkt2BgHTczSS/yyvX6em4yWgw:5opPR5ZQuiws76p/iSiAllyyvdm4I

Malware Config

Extracted

Family

stealc

Botnet

reno

C2

http://185.215.113.115

Attributes
  • url_path

    /c4becf79229cb002.php

Signatures

  • Stealc

    Stealc is an infostealer written in C++.

  • Stealc family
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs
  • Downloads MZ/PE file 1 IoCs
  • Checks BIOS information in registry 2 TTPs 4 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Identifies Wine through registry keys 2 TTPs 2 IoCs

    Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 3 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 NtSetInformationThreadHideFromDebugger 2 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

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

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

  • Modifies system certificate store 2 TTPs 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0OTD8_random.exe
    "C:\Users\Admin\AppData\Local\Temp\0OTD8_random.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Downloads MZ/PE file
    • Checks BIOS information in registry
    • Identifies Wine through registry keys
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • System Location Discovery: System Language Discovery
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1752
    • C:\Users\Admin\AppData\Local\Temp\69Q82NP37VO7TPHZ3GENFLSZ3.exe
      "C:\Users\Admin\AppData\Local\Temp\69Q82NP37VO7TPHZ3GENFLSZ3.exe"
      2⤵
      • Identifies VirtualBox via ACPI registry values (likely anti-VM)
      • Checks BIOS information in registry
      • Executes dropped EXE
      • Identifies Wine through registry keys
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:2096

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\CabB04E.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\Temp\TarB070.tmp

    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

  • \Users\Admin\AppData\Local\Temp\69Q82NP37VO7TPHZ3GENFLSZ3.exe

    Filesize

    1.7MB

    MD5

    be387fa24001fc6815aaa56fd034e158

    SHA1

    ea2116971dc1c9e20250d6e895a467033d3b66cc

    SHA256

    97a0714c97ef7d24d3e6724c9101e4fa035159eab3dd194b4b8f2c3fe927ced3

    SHA512

    8f7ce5bd72a87b7147c65a341b0f6902d68af49b1400bd6a42bcbe2b90719da218a5568eac26ca24e9f6c045ab784a446cd9e81bcf3d8ea212f96c7b9422f1da

  • memory/1752-46-0x0000000001230000-0x00000000016CF000-memory.dmp

    Filesize

    4.6MB

  • memory/1752-48-0x0000000001230000-0x00000000016CF000-memory.dmp

    Filesize

    4.6MB

  • memory/1752-4-0x0000000001230000-0x00000000016CF000-memory.dmp

    Filesize

    4.6MB

  • memory/1752-2-0x0000000001231000-0x000000000125C000-memory.dmp

    Filesize

    172KB

  • memory/1752-39-0x0000000001230000-0x00000000016CF000-memory.dmp

    Filesize

    4.6MB

  • memory/1752-40-0x0000000001230000-0x00000000016CF000-memory.dmp

    Filesize

    4.6MB

  • memory/1752-41-0x0000000001230000-0x00000000016CF000-memory.dmp

    Filesize

    4.6MB

  • memory/1752-42-0x0000000001230000-0x00000000016CF000-memory.dmp

    Filesize

    4.6MB

  • memory/1752-43-0x0000000001230000-0x00000000016CF000-memory.dmp

    Filesize

    4.6MB

  • memory/1752-44-0x0000000001230000-0x00000000016CF000-memory.dmp

    Filesize

    4.6MB

  • memory/1752-45-0x0000000001230000-0x00000000016CF000-memory.dmp

    Filesize

    4.6MB

  • memory/1752-0-0x0000000001230000-0x00000000016CF000-memory.dmp

    Filesize

    4.6MB

  • memory/1752-47-0x0000000001230000-0x00000000016CF000-memory.dmp

    Filesize

    4.6MB

  • memory/1752-3-0x0000000001230000-0x00000000016CF000-memory.dmp

    Filesize

    4.6MB

  • memory/1752-1-0x0000000077010000-0x0000000077012000-memory.dmp

    Filesize

    8KB

  • memory/1752-72-0x0000000001230000-0x00000000016CF000-memory.dmp

    Filesize

    4.6MB

  • memory/1752-57-0x0000000006700000-0x0000000006D7C000-memory.dmp

    Filesize

    6.5MB

  • memory/1752-59-0x0000000006700000-0x0000000006D7C000-memory.dmp

    Filesize

    6.5MB

  • memory/1752-69-0x0000000001230000-0x00000000016CF000-memory.dmp

    Filesize

    4.6MB

  • memory/1752-68-0x0000000001230000-0x00000000016CF000-memory.dmp

    Filesize

    4.6MB

  • memory/1752-62-0x0000000006700000-0x0000000006D7C000-memory.dmp

    Filesize

    6.5MB

  • memory/1752-67-0x0000000001230000-0x00000000016CF000-memory.dmp

    Filesize

    4.6MB

  • memory/1752-66-0x0000000001230000-0x00000000016CF000-memory.dmp

    Filesize

    4.6MB

  • memory/2096-65-0x0000000000820000-0x0000000000E9C000-memory.dmp

    Filesize

    6.5MB

  • memory/2096-63-0x0000000000820000-0x0000000000E9C000-memory.dmp

    Filesize

    6.5MB

  • memory/2096-61-0x0000000000820000-0x0000000000E9C000-memory.dmp

    Filesize

    6.5MB

  • memory/2096-60-0x0000000000821000-0x0000000000838000-memory.dmp

    Filesize

    92KB

  • memory/2096-58-0x0000000000820000-0x0000000000E9C000-memory.dmp

    Filesize

    6.5MB