Resubmissions

28/01/2022, 12:16

220128-pflylaccar10

22/01/2022, 08:05

220122-jyv2bsaddr10

Analysis

  • max time kernel
    120s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    22/01/2022, 08:05

General

  • Target
    3ec149660a6808f711ca6cb6b20c1dda.exe
  • Size 658KB
  • Sample220122-jyv2bsaddr
  • SHA256 2d288f2cd6752a01360f2669959e2c61f676f8156d5cc40d4b415245ae04cf6d
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • purplefox

Botnet
  • Sainbox

C2
  • 193.218.38.93

Extracted

Family
  • purplefox

Signatures

  • Detect PurpleFox Dropper 6 IoCs

    Detect PurpleFox Dropper.

  • Detect PurpleFox Rootkit 6 IoCs

    Detect PurpleFox Rootkit.

  • PurpleFox

    PurpleFox is an exploit kit used to distribute other malware families and first seen in 2018.

  • suricata: ET MALWARE OneLouder EXE download possibly installing Zeus P2P

    suricata: ET MALWARE OneLouder EXE download possibly installing Zeus P2P

  • suricata: ET MALWARE Probable OneLouder downloader (Zeus P2P) exe download

    suricata: ET MALWARE Probable OneLouder downloader (Zeus P2P) exe download

  • suricata: ET MALWARE PurpleFox Backdoor/Rootkit Download Request M1

    suricata: ET MALWARE PurpleFox Backdoor/Rootkit Download Request M1

  • suricata: ET MALWARE PurpleFox Backdoor/Rootkit Download Server Response M1

    suricata: ET MALWARE PurpleFox Backdoor/Rootkit Download Server Response M1

  • Executes dropped EXE 4 IoCs
  • Drops startup file 2 IoCs
  • Loads dropped DLL 7 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3ec149660a6808f711ca6cb6b20c1dda.exe
    "C:\Users\Admin\AppData\Local\Temp\3ec149660a6808f711ca6cb6b20c1dda.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:900
    • C:\Users\Public\Videos\1642842311\7zz.exe
      "C:\Users\Public\Videos\1642842311\7zz.exe" X -ep2 C:\Users\Public\Videos\1642842311\1.rar C:\Users\Public\Videos\1642842311
      2⤵
      • Executes dropped EXE
      PID:1788
    • C:\Users\Public\Videos\1642842311\ojbkcg.exe
      "C:\Users\Public\Videos\1642842311\ojbkcg.exe" -a
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:1100
  • C:\Users\Public\Documents\auto\111.exe
    "C:\Users\Public\Documents\auto\111.exe"
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1828
    • C:\ProgramData\7z.exe
      "C:\ProgramData\7z.exe" x C:\ProgramData\bb.zip -oC:\Users\Admin\AppData\Roaming\Microsoft\Windows
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Loads dropped DLL
      • Suspicious use of AdjustPrivilegeToken
      PID:112

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        222.lnk

        • Path C:\ProgramData\222.lnk
        • Size 1KB
        • SHA256 f169d795ec6f5f75547655c79d359aca5f12834f3d79662865e82af902168f29
        • MD5 SHA1 SHA512

        7z.dll

        • Path C:\ProgramData\7z.dll
        • Size 1.1MB
        • SHA256 3beecf3d764daaffc020ba89dd764b0215fbd360bfc115fbb3880ef0672b98e5
        • MD5 SHA1 SHA512 SSDEEP

        7z.exe

        • Path C:\ProgramData\7z.exe
        • Size 301KB
        • SHA256 921226944015f01f2780179690b7bfcee7b92ea452fe85cae9375e49d64ee0b4
        • MD5 SHA1 SHA512 SSDEEP

        7z.exe

        • Path C:\ProgramData\7z.exe
        • Size 301KB
        • SHA256 921226944015f01f2780179690b7bfcee7b92ea452fe85cae9375e49d64ee0b4
        • MD5 SHA1 SHA512 SSDEEP

        bb.zip

        • Path C:\ProgramData\bb.zip
        • Size 1KB
        • SHA256 793d02326504985024cd6afa21f0e1555855b59bc3a63442f0c51337ba74720a
        • MD5 SHA1 SHA512

        svchost.txt

        • Path C:\ProgramData\svchost.txt
        • Size 8.5MB
        • SHA256 88dd42dedc77e8ad117cc54d7b37083bbacaa6ecb84553bda31905b0a29e0e4d
        • MD5 SHA1 SHA512 SSDEEP

        111.exe

        • Path C:\Users\Public\Documents\auto\111.exe
        • Size 328KB
        • SHA256 cb201744a0f50e72ee4fda9298785fa16bfc4bf639a9474457e429278ff376bc
        • MD5 SHA1 SHA512 SSDEEP

        111.exe

        • Path C:\Users\Public\Documents\auto\111.exe
        • Size 328KB
        • SHA256 cb201744a0f50e72ee4fda9298785fa16bfc4bf639a9474457e429278ff376bc
        • MD5 SHA1 SHA512 SSDEEP

        update.ini

        • Path C:\Users\Public\Documents\auto\update.ini
        • Size 39B
        • SHA256 e21a77a762b943102a0bd1cd9909b4f2c310889b1e3144a1a1e39fc4f09667bf
        • MD5 SHA1 SHA512

        1.rar

        • Path C:\Users\Public\Videos\1642842311\1.rar
        • Size 2.5MB
        • SHA256 a4ff67d7b4cf8d8b653c5880a3eede800e1d8b446817ca46b765fc721500803f
        • MD5 SHA1 SHA512 SSDEEP

        360.tct

        • Path C:\Users\Public\Videos\1642842311\360.tct
        • Size 254KB
        • SHA256 57119d54b90eebd73bc62006e094f1961fb5a2f78ec63ae3bd00dfdbca5d995f
        • MD5 SHA1 SHA512 SSDEEP

        7zz.exe

        • Path C:\Users\Public\Videos\1642842311\7zz.exe
        • Size 572KB
        • SHA256 07ad4b984f288304003b080dd013784685181de4353a0b70a0247f96e535bd56
        • MD5 SHA1 SHA512 SSDEEP

        ojbkcg.exe

        • Path C:\Users\Public\Videos\1642842311\ojbkcg.exe
        • Size 95KB
        • SHA256 4a54964ba3294d426cd78f82be0e2cf57fbeff0686ab85c47eb49a3d0837dcee
        • MD5 SHA1 SHA512 SSDEEP

        ojbkcg.exe

        • Path C:\Users\Public\Videos\1642842311\ojbkcg.exe
        • Size 95KB
        • SHA256 4a54964ba3294d426cd78f82be0e2cf57fbeff0686ab85c47eb49a3d0837dcee
        • MD5 SHA1 SHA512 SSDEEP

        rundll3222.exe

        • Path C:\Users\Public\Videos\1642842311\rundll3222.exe
        • Size 45KB
        • SHA256 405f03534be8b45185695f68deb47d4daf04dcd6df9d351ca6831d3721b1efc4
        • MD5 SHA1 SHA512 SSDEEP

        svchost.txt

        • Path C:\Users\Public\Videos\1642842311\svchost.txt
        • Size 8.5MB
        • SHA256 88dd42dedc77e8ad117cc54d7b37083bbacaa6ecb84553bda31905b0a29e0e4d
        • MD5 SHA1 SHA512 SSDEEP

        7z.dll

        • Path \ProgramData\7z.dll
        • Size 1.1MB
        • SHA256 3beecf3d764daaffc020ba89dd764b0215fbd360bfc115fbb3880ef0672b98e5
        • MD5 SHA1 SHA512 SSDEEP

        7z.exe

        • Path \ProgramData\7z.exe
        • Size 301KB
        • SHA256 921226944015f01f2780179690b7bfcee7b92ea452fe85cae9375e49d64ee0b4
        • MD5 SHA1 SHA512 SSDEEP

        7z.exe

        • Path \ProgramData\7z.exe
        • Size 301KB
        • SHA256 921226944015f01f2780179690b7bfcee7b92ea452fe85cae9375e49d64ee0b4
        • MD5 SHA1 SHA512 SSDEEP

        7z.exe

        • Path \ProgramData\7z.exe
        • Size 301KB
        • SHA256 921226944015f01f2780179690b7bfcee7b92ea452fe85cae9375e49d64ee0b4
        • MD5 SHA1 SHA512 SSDEEP

        7z.exe

        • Path \ProgramData\7z.exe
        • Size 301KB
        • SHA256 921226944015f01f2780179690b7bfcee7b92ea452fe85cae9375e49d64ee0b4
        • MD5 SHA1 SHA512 SSDEEP

        360.tct

        • Path \Users\Public\Videos\1642842311\360.tct
        • Size 254KB
        • SHA256 57119d54b90eebd73bc62006e094f1961fb5a2f78ec63ae3bd00dfdbca5d995f
        • MD5 SHA1 SHA512 SSDEEP

        ojbkcg.exe

        • Path \Users\Public\Videos\1642842311\ojbkcg.exe
        • Size 95KB
        • SHA256 4a54964ba3294d426cd78f82be0e2cf57fbeff0686ab85c47eb49a3d0837dcee
        • MD5 SHA1 SHA512 SSDEEP

        memory/900-55-0x000007FEFC261000-0x000007FEFC263000-memory.dmp

        memory/1100-70-0x0000000001F50000-0x00000000027C5000-memory.dmp

        memory/1100-67-0x0000000180000000-0x00000001808AB000-memory.dmp

        memory/1788-57-0x00000000769D1000-0x00000000769D3000-memory.dmp