Analysis

  • max time kernel
    152s
  • max time network
    91s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    28-11-2022 11:07

General

  • Target

    pdf.exe

  • Size

    102KB

  • MD5

    b04423987d7a01ca1bf5b1f8f2b77b0c

  • SHA1

    6468823f6da30059a2750cf2b4599fdb8e450f05

  • SHA256

    8edcf97df9e24756e8700a4496dd92d3677fc835925a90d1c48914e369b7f651

  • SHA512

    c709012177a1d05939e92218111a0e08520166179de4353cc576e88e609fdbf556a99afa3175193a4b7d5d5b38f6688458d0e2e50f549e6f159b46f78bc1b295

  • SSDEEP

    1536:TcTbDj6OLC73ybzlr6kI+KEBXiI40n6aDnOae98fAaMGSSpvvKet2Hbq86Dm:TcX6OWqzlUUBSpE6aDOOvvNtP86Dm

Malware Config

Extracted

Family

njrat

Version

0.6.4

Botnet

nEwHacKed

C2

slowburn.linkpc.net:6760

Mutex

a5e14c6feeac7389fad3a06801dddd4f

Attributes
  • reg_key

    a5e14c6feeac7389fad3a06801dddd4f

  • splitter

    |'|'|

Extracted

Family

pony

C2

http://slow1234.serveftp.com/duos/gate.php

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Pony,Fareit

    Pony is a Remote Access Trojan application that steals information.

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • UPX packed file 7 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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 Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Accesses Microsoft Outlook profiles 1 TTPs 1 IoCs
  • 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 SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 15 IoCs
  • Suspicious use of AdjustPrivilegeToken 34 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\pdf.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1788
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c reg add "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v shell /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\reader\adobe.exe,explorer.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:268
      • C:\Windows\SysWOW64\reg.exe
        reg add "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v shell /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\reader\adobe.exe,explorer.exe"
        3⤵
        • Modifies WinLogon for persistence
        PID:1904
    • C:\Users\Admin\AppData\Local\Temp\pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\pdf.exe"
      2⤵
      • Accesses Microsoft Outlook accounts
      • Accesses Microsoft Outlook profiles
      • Suspicious use of AdjustPrivilegeToken
      • outlook_win_path
      PID:1288
    • C:\Users\Admin\AppData\Local\Temp\njratbin.exe
      "C:\Users\Admin\AppData\Local\Temp\njratbin.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:668
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\njratbin.exe" "njratbin.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:1508

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Winlogon Helper DLL

1
T1004

Modify Existing Service

1
T1031

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Collection

Data from Local System

2
T1005

Email Collection

2
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\njratbin.exe
    Filesize

    29KB

    MD5

    007a4bd3c704a1ddd7d1b04ee9d91c27

    SHA1

    60843e7a18316d258afba4690a5ecc62c1045795

    SHA256

    4442506b3211c38811543e2aad5bf276d075734f7967d83a2b3117bc4bad044a

    SHA512

    e9678f517dbfd58ea51e93576988660d6447b479a61b478a91de7edf6057825a7a8e08d7a147514c6c9d5c2ef11e469de9ee729db2f95ef96c72eeb7e98a4838

  • C:\Users\Admin\AppData\Local\Temp\njratbin.exe
    Filesize

    29KB

    MD5

    007a4bd3c704a1ddd7d1b04ee9d91c27

    SHA1

    60843e7a18316d258afba4690a5ecc62c1045795

    SHA256

    4442506b3211c38811543e2aad5bf276d075734f7967d83a2b3117bc4bad044a

    SHA512

    e9678f517dbfd58ea51e93576988660d6447b479a61b478a91de7edf6057825a7a8e08d7a147514c6c9d5c2ef11e469de9ee729db2f95ef96c72eeb7e98a4838

  • \Users\Admin\AppData\Local\Temp\njratbin.exe
    Filesize

    29KB

    MD5

    007a4bd3c704a1ddd7d1b04ee9d91c27

    SHA1

    60843e7a18316d258afba4690a5ecc62c1045795

    SHA256

    4442506b3211c38811543e2aad5bf276d075734f7967d83a2b3117bc4bad044a

    SHA512

    e9678f517dbfd58ea51e93576988660d6447b479a61b478a91de7edf6057825a7a8e08d7a147514c6c9d5c2ef11e469de9ee729db2f95ef96c72eeb7e98a4838

  • \Users\Admin\AppData\Roaming\reader\adobe.exe
    Filesize

    102KB

    MD5

    b04423987d7a01ca1bf5b1f8f2b77b0c

    SHA1

    6468823f6da30059a2750cf2b4599fdb8e450f05

    SHA256

    8edcf97df9e24756e8700a4496dd92d3677fc835925a90d1c48914e369b7f651

    SHA512

    c709012177a1d05939e92218111a0e08520166179de4353cc576e88e609fdbf556a99afa3175193a4b7d5d5b38f6688458d0e2e50f549e6f159b46f78bc1b295

  • memory/268-58-0x0000000000000000-mapping.dmp
  • memory/668-81-0x0000000074E00000-0x00000000753AB000-memory.dmp
    Filesize

    5.7MB

  • memory/668-77-0x0000000074E00000-0x00000000753AB000-memory.dmp
    Filesize

    5.7MB

  • memory/668-68-0x0000000000000000-mapping.dmp
  • memory/1288-74-0x0000000000400000-0x000000000041D000-memory.dmp
    Filesize

    116KB

  • memory/1288-64-0x0000000000400000-0x000000000041D000-memory.dmp
    Filesize

    116KB

  • memory/1288-65-0x000000000041AEC0-mapping.dmp
  • memory/1288-63-0x0000000000400000-0x000000000041D000-memory.dmp
    Filesize

    116KB

  • memory/1288-61-0x0000000000400000-0x000000000041D000-memory.dmp
    Filesize

    116KB

  • memory/1288-60-0x0000000000400000-0x000000000041D000-memory.dmp
    Filesize

    116KB

  • memory/1288-70-0x0000000000400000-0x000000000041D000-memory.dmp
    Filesize

    116KB

  • memory/1288-80-0x0000000000400000-0x000000000041D000-memory.dmp
    Filesize

    116KB

  • memory/1288-78-0x0000000000400000-0x000000000041D000-memory.dmp
    Filesize

    116KB

  • memory/1508-76-0x0000000000000000-mapping.dmp
  • memory/1788-71-0x0000000074E00000-0x00000000753AB000-memory.dmp
    Filesize

    5.7MB

  • memory/1788-56-0x0000000074E00000-0x00000000753AB000-memory.dmp
    Filesize

    5.7MB

  • memory/1788-54-0x00000000760D1000-0x00000000760D3000-memory.dmp
    Filesize

    8KB

  • memory/1788-55-0x0000000074E00000-0x00000000753AB000-memory.dmp
    Filesize

    5.7MB

  • memory/1904-59-0x0000000000000000-mapping.dmp