Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-03-2024 05:37

General

  • Target

    2024-03-30_b4c13f6033d5a75654e5d8836918cc65_ryuk.exe

  • Size

    396KB

  • MD5

    b4c13f6033d5a75654e5d8836918cc65

  • SHA1

    7344a966ad1239698a9bf6615eb4dea25f49d934

  • SHA256

    84ad8981730bc90d066598f9d840998261265c043d19f5514108d725889538cb

  • SHA512

    43c4e712a86734c40a0bfcbaf21e1731941de4a959f48e9babbc8ee967e8130556079687e61adb4ab44475ac63e70ec8e0601ac5926c87d66553e18797d562be

  • SSDEEP

    6144:cFb35BvvhYO7u1wq5e1WnLWXw8iIXjsI7iB/zYO+ARmi0yqCH:mFBnZq5e1WnuV8zR+fig

Malware Config

Extracted

Family

phorphiex

C2

http://185.215.113.66/

Wallets

0xAa3ea4838e8E3F6a1922c6B67E3cD6efD1ff175b

THRUoPK7oYqF7YyKZJvPYwTH35JsPZVPto

1Hw9tx4KyTq4oRoLVhPb4hjDJcLhEa4Tn6

qr89hag2967ef604ud3lw4pq8hmn69n46czwdnx3ut

XtxFdsKkRN3oVDXtN2ipcHeNi87basT2sL

LXMNcn9D8FQKzGNLjdSyR9dEM8Rsh9NzyX

rwn7tb5KQjXEjH42GgdHWHec5PPhVgqhSH

ARML6g7zynrwUHJbFJCCzMPiysUFXYBGgQ

48jYpFT6bT8MTeph7VsyzCQeDsGHqdQNc2kUkRFJPzfRHHjarBvBtudPUtParMkDzZbYBrd3yntWBQcsnVBNeeMbN9EXifg

3PL7YCa4akNYzuScqQwiSbtTP9q9E9PLreC

3FerB8kUraAVGCVCNkgv57zTBjUGjAUkU3

D9AJWrbYsidS9rAU146ifLRu1fzX9oQYSH

t1gvVWHnjbGTsoWXEyoTFojc2GqEzBgvbEn

bnb1cgttf7t5hu7ud3c436ufhcmy59qnkd09adqczd

bc1q0fusmmgycnhsd5cadsuz2hk8d4maausjfjypqg

bitcoincash:qr89hag2967ef604ud3lw4pq8hmn69n46czwdnx3ut

GAUCC7ZBSU2KJMHXOZD6AP5LOBGKNDPCDNRYP2CO2ACR63YCSUBNT5QE

Signatures

  • Phorphiex

    Malware family which infects systems to distribute other malicious payloads such as ransomware, stealers and cryptominers.

  • Phorphiex payload 1 IoCs
  • Suspicious use of NtCreateUserProcessOtherParentProcess 4 IoCs
  • Windows security bypass 2 TTPs 12 IoCs
  • xmrig

    XMRig is a high performance, open source, cross platform CPU/GPU miner.

  • XMRig Miner payload 1 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 8 IoCs
  • Windows security modification 2 TTPs 14 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious behavior: SetClipboardViewer 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:3452
      • C:\Users\Admin\AppData\Local\Temp\2024-03-30_b4c13f6033d5a75654e5d8836918cc65_ryuk.exe
        "C:\Users\Admin\AppData\Local\Temp\2024-03-30_b4c13f6033d5a75654e5d8836918cc65_ryuk.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:560
        • C:\Users\Admin\AppData\Local\Temp\5350.exe
          "C:\Users\Admin\AppData\Local\Temp\5350.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of WriteProcessMemory
          PID:644
          • C:\Users\Admin\AppData\Local\Temp\101795949.exe
            C:\Users\Admin\AppData\Local\Temp\101795949.exe
            4⤵
            • Windows security bypass
            • Executes dropped EXE
            • Windows security modification
            • Adds Run key to start application
            • Drops file in Windows directory
            • Suspicious use of WriteProcessMemory
            PID:3288
            • C:\Users\Admin\AppData\Local\Temp\788511091.exe
              C:\Users\Admin\AppData\Local\Temp\788511091.exe
              5⤵
              • Windows security bypass
              • Executes dropped EXE
              • Windows security modification
              • Adds Run key to start application
              • Drops file in Windows directory
              • Suspicious behavior: SetClipboardViewer
              PID:4112
            • C:\Users\Admin\AppData\Local\Temp\333802613.exe
              C:\Users\Admin\AppData\Local\Temp\333802613.exe
              5⤵
              • Executes dropped EXE
              PID:2128
            • C:\Users\Admin\AppData\Local\Temp\28331325.exe
              C:\Users\Admin\AppData\Local\Temp\28331325.exe
              5⤵
              • Executes dropped EXE
              PID:1096
            • C:\Users\Admin\AppData\Local\Temp\319893277.exe
              C:\Users\Admin\AppData\Local\Temp\319893277.exe
              5⤵
              • Executes dropped EXE
              • Suspicious use of WriteProcessMemory
              PID:2612
              • C:\Users\Admin\AppData\Local\Temp\1035626155.exe
                C:\Users\Admin\AppData\Local\Temp\1035626155.exe
                6⤵
                • Suspicious use of NtCreateUserProcessOtherParentProcess
                • Executes dropped EXE
                • Suspicious behavior: EnumeratesProcesses
                PID:2112
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe <#llzqlmcx#> IF([System.Environment]::OSVersion.Version -lt [System.Version]"6.2") { schtasks /create /f /sc onlogon /rl highest /tn 'Windows Upgrade Manager' /tr '''C:\Users\Admin\Windows Upgrade\wupgrdsv.exe''' } Else { Register-ScheduledTask -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\Windows Upgrade\wupgrdsv.exe') -Trigger (New-ScheduledTaskTrigger -AtLogOn) -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -DisallowHardTerminate -DontStopIfGoingOnBatteries -DontStopOnIdleEnd -ExecutionTimeLimit (New-TimeSpan -Days 1000)) -TaskName 'Windows Upgrade Manager' -RunLevel 'Highest' -Force; }
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2212
      • C:\Windows\System32\schtasks.exe
        C:\Windows\System32\schtasks.exe /run /tn "Windows Upgrade Manager"
        2⤵
          PID:1100
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe <#llzqlmcx#> IF([System.Environment]::OSVersion.Version -lt [System.Version]"6.2") { schtasks /create /f /sc onlogon /rl highest /tn 'Windows Upgrade Manager' /tr '''C:\Users\Admin\Windows Upgrade\wupgrdsv.exe''' } Else { Register-ScheduledTask -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\Windows Upgrade\wupgrdsv.exe') -Trigger (New-ScheduledTaskTrigger -AtLogOn) -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -DisallowHardTerminate -DontStopIfGoingOnBatteries -DontStopOnIdleEnd -ExecutionTimeLimit (New-TimeSpan -Days 1000)) -TaskName 'Windows Upgrade Manager' -RunLevel 'Highest' -Force; }
          2⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:3772
        • C:\Windows\System32\notepad.exe
          C:\Windows\System32\notepad.exe
          2⤵
            PID:1036
        • C:\Users\Admin\Windows Upgrade\wupgrdsv.exe
          "C:\Users\Admin\Windows Upgrade\wupgrdsv.exe"
          1⤵
          • Suspicious use of NtCreateUserProcessOtherParentProcess
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4544

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
          Filesize

          3KB

          MD5

          c95fe14a860e918a98d24f0f368b1c43

          SHA1

          69c8cdb324ffa35c638a9ca9e4231375af22a380

          SHA256

          b611743d7be3e9f89db1d97a71ed2ee2efcc02df0d824078ff7be6f78a0bb7f3

          SHA512

          6e8dcf392ebdab756016c82db7aa3bd920b26eb18b049d4d2980101bc34bf2d096003168c9853997e1d0683575668050c485acacf1fce8cb6054e8fc018b7fef

        • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
          Filesize

          1KB

          MD5

          7c454230042e04cd56c7fc216097e843

          SHA1

          e18b3635dbb875ddde49a995fe6dd2d66828bdd8

          SHA256

          ca55d5279641c69846bc7d426091c7c0812317e36871d36ada6a6aa7749787c1

          SHA512

          3c897e5b3071287d456ff2f832017b7001b50a463173e0e44c5bed9921e8b8f1e3f1169a910ee177f3674ae94f87e5f32700cc25b320b936264bde6967fa7897

        • C:\Users\Admin\AppData\Local\Temp\101795949.exe
          Filesize

          84KB

          MD5

          161a475bfe57d8b5317ca1f2f24b88fa

          SHA1

          38fa8a789d3d7570c411ddf4c038d89524142c2c

          SHA256

          98fb81423a107a5359e5fc86f1c4d81ff2d4bc73b79f55a5bf827fdb8e620c54

          SHA512

          d9f61f80c96fbac030c1105274f690d38d5dc8af360645102080a7caed7bad303ae89ed0e169124b834a68d1a669781eb70269bf4e8d5f34aeef394dd3d16547

        • C:\Users\Admin\AppData\Local\Temp\1035626155.exe
          Filesize

          5.4MB

          MD5

          41ab08c1955fce44bfd0c76a64d1945a

          SHA1

          2b9cb05f4de5d98c541d15175d7f0199cbdd0eea

          SHA256

          dd12cb27b3867341bf6ca48715756500d3ec56c19b21bb1c1290806aa74cb493

          SHA512

          38834ae703a8541b4fec9a1db94cfe296ead58649bb1d4873b517df14d0c6a9d25e49ff04c2bf6bb0188845116a4e894aae930d849f9be8c98d2ce51da1ef116

        • C:\Users\Admin\AppData\Local\Temp\28331325.exe
          Filesize

          21KB

          MD5

          fbfed7e78bd7500305b4f5aa3be7faf7

          SHA1

          725efabc569850d85e14ab2f32ce2f334449b05e

          SHA256

          259c1a878ba150f7e5be9b2884add3ea92a254ddfcc7b7ddbb0bf6d1bf30a500

          SHA512

          6dd4f49db3cf03c4723fa8c62446875738f53266d3ea5ba9462451ecf94224374b761a547fa68ff2ea2b1054cb0176cd8f5fd458101f3f0f25c0d4f0a76bb757

        • C:\Users\Admin\AppData\Local\Temp\319893277.exe
          Filesize

          6KB

          MD5

          0d539e8277f20391a31babff8714fdb0

          SHA1

          a4e63870aa5fd258dde4f02be70732c27f556fa9

          SHA256

          669035f4f05fe6ffc7722987c41f802f3a11298cb3a154b00c4e76df2ae5fe32

          SHA512

          700ff1733a064ddda80c0ac4702e50a8c0ddd97f154ff894f89d16603c02076a13e1a93ca51224579898cdf69e560a69dff60d4f5e26a479e74a3e3350f822ff

        • C:\Users\Admin\AppData\Local\Temp\333802613.exe
          Filesize

          84KB

          MD5

          41d55c23d79fc0c0c322db16c6ce6af8

          SHA1

          e4bbdf2a983a11975a7ab6dcba41cb60676ec780

          SHA256

          93f3f99a6d6dc69b907a3da8596bd850c1e3ce53be9bf1c6edfdb00e90579e6f

          SHA512

          06680eb47802659dc2e28cd9a839052a8536112056db49f7179f1b53cf2dba0e9cfd9d8bbdeb446ecb8a2f4a58f7b0f100d0526660d4afd8540a4db091cf621f

        • C:\Users\Admin\AppData\Local\Temp\5350.exe
          Filesize

          9KB

          MD5

          62b97cf4c0abafeda36e3fc101a5a022

          SHA1

          328fae9acff3f17df6e9dc8d6ef1cec679d4eb2b

          SHA256

          e172537adcee1fcdc8f16c23e43a5ac82c56a0347fa0197c08be979438a534ab

          SHA512

          32bd7062aabd25205471cec8d292b820fc2fd2479da6fb723332887fc47036570bb2d25829acb7c883ccaaab272828c8effbc78f02a3deeabb47656f4b64eb24

        • C:\Users\Admin\AppData\Local\Temp\788511091.exe
          Filesize

          23KB

          MD5

          9d2b22562b9a3958dfd7e6e6fa7bd66f

          SHA1

          1941c24958ac09cf518f4124225b2d0b5d874cf0

          SHA256

          84daa9d52f759af343741880a3b66a3abb886310de7f552743d99e69741c6450

          SHA512

          8c0b54e01f62207edaaf8f967fe83eacd3e278660c1764feb3fde68bfd376ba875012849f969d8b5922bd6b791a231bf75dc76eade227e2fd25f4791163d9dd1

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_z1enrirx.j3a.ps1
          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • memory/1036-104-0x000001C9DF8E0000-0x000001C9DF900000-memory.dmp
          Filesize

          128KB

        • memory/1036-103-0x000001C9DF8B0000-0x000001C9DF8D0000-memory.dmp
          Filesize

          128KB

        • memory/2112-82-0x00007FF6CAA40000-0x00007FF6CAFB6000-memory.dmp
          Filesize

          5.5MB

        • memory/2212-75-0x0000018FBE080000-0x0000018FBE090000-memory.dmp
          Filesize

          64KB

        • memory/2212-79-0x00007FFB09680000-0x00007FFB0A141000-memory.dmp
          Filesize

          10.8MB

        • memory/2212-76-0x0000018FBE080000-0x0000018FBE090000-memory.dmp
          Filesize

          64KB

        • memory/2212-74-0x0000018FBE080000-0x0000018FBE090000-memory.dmp
          Filesize

          64KB

        • memory/2212-73-0x0000018FBE080000-0x0000018FBE090000-memory.dmp
          Filesize

          64KB

        • memory/2212-71-0x0000018FD86A0000-0x0000018FD86C2000-memory.dmp
          Filesize

          136KB

        • memory/2212-72-0x00007FFB09680000-0x00007FFB0A141000-memory.dmp
          Filesize

          10.8MB

        • memory/3772-85-0x00007FFB09680000-0x00007FFB0A141000-memory.dmp
          Filesize

          10.8MB

        • memory/3772-92-0x000001C524330000-0x000001C524340000-memory.dmp
          Filesize

          64KB

        • memory/3772-97-0x000001C524330000-0x000001C524340000-memory.dmp
          Filesize

          64KB

        • memory/3772-99-0x00007FFB09680000-0x00007FFB0A141000-memory.dmp
          Filesize

          10.8MB

        • memory/4544-102-0x00007FF7BB9D0000-0x00007FF7BBF46000-memory.dmp
          Filesize

          5.5MB