Analysis

  • max time kernel
    120s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    27-10-2024 02:11

General

  • Target

    22a164ed481ba88df26ce7e819f2240d7fafa5b6ee2cd2993cb5fae3d566be7f.exe

  • Size

    146KB

  • MD5

    a7be144ff0b871ddd45e1e0bef06faa6

  • SHA1

    811797d3e0ce7c5ed76ff656156a2c066f306032

  • SHA256

    22a164ed481ba88df26ce7e819f2240d7fafa5b6ee2cd2993cb5fae3d566be7f

  • SHA512

    caeec8ed5080f00fe1134b968c81f13660ac1a9312d1f151b676f2a0b3670b2c0440e00c8a5e398d91707be5989d34e547ff3d5b4facbba81705c41f52bb3367

  • SSDEEP

    3072:46glyuxE4GsUPnliByocWep0AMmr7fTP+Gldf:46gDBGpvEByocWeRMa3P

Malware Config

Signatures

  • Renames multiple (328) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Drops desktop.ini file(s) 2 IoCs
  • Indicator Removal: File Deletion 1 TTPs

    Adversaries may delete files left behind by the actions of their intrusion activity.

  • Sets desktop wallpaper using registry 2 TTPs 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

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

  • Modifies Control Panel 2 IoCs
  • Modifies registry class 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 20 IoCs
  • Suspicious behavior: RenamesItself 26 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\22a164ed481ba88df26ce7e819f2240d7fafa5b6ee2cd2993cb5fae3d566be7f.exe
    "C:\Users\Admin\AppData\Local\Temp\22a164ed481ba88df26ce7e819f2240d7fafa5b6ee2cd2993cb5fae3d566be7f.exe"
    1⤵
    • Loads dropped DLL
    • Drops desktop.ini file(s)
    • Sets desktop wallpaper using registry
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • System Location Discovery: System Language Discovery
    • Modifies Control Panel
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2388
    • C:\ProgramData\CBF6.tmp
      "C:\ProgramData\CBF6.tmp"
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: RenamesItself
      • Suspicious use of WriteProcessMemory
      PID:1504
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\CBF6.tmp >> NUL
        3⤵
        • System Location Discovery: System Language Discovery
        PID:792
  • C:\Windows\system32\AUDIODG.EXE
    C:\Windows\system32\AUDIODG.EXE 0x14c
    1⤵
      PID:2840

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\$Recycle.Bin\S-1-5-21-4177215427-74451935-3209572229-1000\CCCCCCCCCCC

      Filesize

      129B

      MD5

      5e9b5347cee3e4cdbdefca74dc66c7bd

      SHA1

      b69b9eb87cc8c5b8278e0b38b9d87d62b4ef3082

      SHA256

      17db922feb6a0a44231c3b500ba0bdd592a1a14e9c9de6f22b1984ef755a59e5

      SHA512

      50cee9b46b3bd0c4f3ed841b8cf4c825becf7a2ad844d8479b5bfe74f30a3aa9aa7291eb0d767f26a69a7a064c9dc6e919060f52df11cb9513234b6bc0351199

    • C:\OC9oMrMV8.README.txt

      Filesize

      343B

      MD5

      a8864aa0987b12bc59008a02c3ddda88

      SHA1

      54327dba296f734aae7ba65faf0b3dd8cb73b714

      SHA256

      168c71031668b64e0ccf26e81353f6eacb3599edbaf62f7aa62c55b8075a5a8f

      SHA512

      5a94b41a4f74354978c32dbe18d505bda8db0a0195f1df1749f81478c0bc0e022b744972f0c491a33b595fc9b21c7b5b59252ec5451b14cf15cbb6c936954dd8

    • C:\Users\Admin\AppData\Local\Temp\DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD

      Filesize

      146KB

      MD5

      cce9048bb70483004eadcf3059137223

      SHA1

      3a77b9a1f5ce5fb1b73c95983a03e4d619ff5c92

      SHA256

      82925699e553bda33c9c523bd610d8658c6b3f5de9391a78417efc7770850c29

      SHA512

      cceb08341a659cbea15225ee2e77bf98ec46f3331fcff84d2f48a2bcc229357900a29d07ffc0878a0d1ee6406ed9f3c6af3fd44289ffb5c2315831d22b4d3f13

    • F:\$RECYCLE.BIN\S-1-5-21-4177215427-74451935-3209572229-1000\DDDDDDDDDDD

      Filesize

      129B

      MD5

      c6f9d0b212975f91bf54664cbd51d5cd

      SHA1

      19a952bc53f3665754e7e4a239c01e6b473dd1fe

      SHA256

      08fb808857c54306781a7dbc294e13c8e4fe2a6002796694f8e66f16b6caa2d5

      SHA512

      ee43718f2f859429b12f2603c19c2fc991971e10fbc19568fde70b8990b610bec40e36e97b1fbcc95fd7ef91fe7c654154abe7ef262b6bd27b2ed02984e98dfa

    • \ProgramData\CBF6.tmp

      Filesize

      14KB

      MD5

      294e9f64cb1642dd89229fff0592856b

      SHA1

      97b148c27f3da29ba7b18d6aee8a0db9102f47c9

      SHA256

      917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

      SHA512

      b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

    • memory/1504-864-0x000000007EF80000-0x000000007EF81000-memory.dmp

      Filesize

      4KB

    • memory/1504-862-0x000000007EFA0000-0x000000007EFA1000-memory.dmp

      Filesize

      4KB

    • memory/1504-865-0x0000000000370000-0x00000000003B0000-memory.dmp

      Filesize

      256KB

    • memory/1504-867-0x000000007EF20000-0x000000007EF21000-memory.dmp

      Filesize

      4KB

    • memory/1504-866-0x0000000000370000-0x00000000003B0000-memory.dmp

      Filesize

      256KB

    • memory/1504-897-0x000000007EF60000-0x000000007EF61000-memory.dmp

      Filesize

      4KB

    • memory/1504-896-0x000000007EF40000-0x000000007EF41000-memory.dmp

      Filesize

      4KB

    • memory/2388-0-0x0000000000BA0000-0x0000000000BE0000-memory.dmp

      Filesize

      256KB

    • memory/2388-1-0x0000000000BA0000-0x0000000000BE0000-memory.dmp

      Filesize

      256KB