Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-06-2024 07:36

General

  • Target

    2024-06-19_79d41e803ff07bb5a9cbe4171a4fd09d_bkransomware.exe

  • Size

    5.8MB

  • MD5

    79d41e803ff07bb5a9cbe4171a4fd09d

  • SHA1

    d605267642ebb7cc4cbe44624c5b4ddca80e0b3d

  • SHA256

    38bdd3c94b5c8f7adbd2075ca213b3303b12af96245092ef402606d372b3f8fd

  • SHA512

    13c70cf2a69466248c7eb9f04bfaae187b3db1bbd023a2aaea21a58c3617f30022f8df58adb3615f1c4129f86e81730c7e840a44d6dae817ee7bd0c3243887b6

  • SSDEEP

    98304:vY1/j6oX2Vi367ZGHbekta/Xgj22iZa6fAd5UkYKty6WAf3Gs:Qu6lHbq2riZa6fymkYdlAf3Gs

Malware Config

Extracted

Family

phorphiex

C2

http://185.215.113.66/

http://77.91.77.92/

http://91.202.233.141/

Wallets

0xCa90599132C4D88907Bd8E046540284aa468a035

TRuGGXNDM1cavQ1AqMQHG8yfxP4QWVSMN6

qph44jx8r9k5xeq5cuf958krv3ewrnp5vc6hhdjd3r

XryzFMFVpDUvU7famUGf214EXD3xNUSmQf

LLeT2zkStY3cvxMBFhoWXkG5VuZPoezduv

rwc4LVd9ABpULQ1CuCpDkgX2xVB1fUijyb

4AtjkCVKbtEC3UEN77SQHuH9i1XkzNiRi5VCbA2XGsJh46nJSXfGQn4GjLuupCqmC57Lo7LvKmFUyRfhtJSvKvuw3h9ReKK

15TssKwtjMtwy4vDLcLsQUZUD2B9f7eDjw85sBNVC5LRPPnC

17hgMFyLDwMjxWqw5GhijhnPdJDyFDqecY

ltc1qt0n3f0t7vz9k0mvcswk477shrxwjhf9sj5ykrp

3PMiLynrGVZ8oEqvoqC4hXD67B1WoALR4pc

3FerB8kUraAVGCVCNkgv57zTBjUGjAUkU3

DLUzwvyxN1RrwjByUPPzVMdfxNRPGVRMMA

t1J6GCPCiHW1eRdjJgDDu6b1vSVmL5U7Twh

stars125f3mw4xd9htpsq4zj5w5ezm5gags37yxxh6mj

bnb1epx67ne4vckqmaj4gwke8m322f4yjr6eh52wqw

bc1qmpkehfffkr6phuklsksnd7nhgx0369sxu772m3

bitcoincash:qph44jx8r9k5xeq5cuf958krv3ewrnp5vc6hhdjd3r

GBQJMXYXPRIWFMXIFJR35ZB7LRKMB4PHCIUAUFR3TKUL6RDBZVLZEUJ3

Attributes
  • mutex

    55a4er5wo

  • user_agent

    Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36

Signatures

  • Modifies security service 2 TTPs 2 IoCs
  • Phorphiex payload 2 IoCs
  • Phorphiex, Phorpiex

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

  • 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 11 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 14 IoCs
  • Windows security modification 2 TTPs 14 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 39 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:3468
      • C:\Users\Admin\AppData\Local\Temp\2024-06-19_79d41e803ff07bb5a9cbe4171a4fd09d_bkransomware.exe
        "C:\Users\Admin\AppData\Local\Temp\2024-06-19_79d41e803ff07bb5a9cbe4171a4fd09d_bkransomware.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2752
        • C:\Users\Admin\AppData\Local\Temp\3410.exe
          "C:\Users\Admin\AppData\Local\Temp\3410.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of WriteProcessMemory
          PID:3252
          • C:\Users\Admin\AppData\Local\Temp\398615499.exe
            C:\Users\Admin\AppData\Local\Temp\398615499.exe
            4⤵
            • Executes dropped EXE
            • Adds Run key to start application
            • Drops file in Windows directory
            • Suspicious use of WriteProcessMemory
            PID:4248
            • C:\Windows\sysmablsvr.exe
              C:\Windows\sysmablsvr.exe
              5⤵
              • Modifies security service
              • Windows security bypass
              • Executes dropped EXE
              • Windows security modification
              • Suspicious use of WriteProcessMemory
              PID:4464
              • C:\Users\Admin\AppData\Local\Temp\3130218858.exe
                C:\Users\Admin\AppData\Local\Temp\3130218858.exe
                6⤵
                • Executes dropped EXE
                PID:1444
              • C:\Users\Admin\AppData\Local\Temp\336917521.exe
                C:\Users\Admin\AppData\Local\Temp\336917521.exe
                6⤵
                • Executes dropped EXE
                • Suspicious use of WriteProcessMemory
                PID:5024
                • C:\Users\Admin\AppData\Local\Temp\1500710897.exe
                  C:\Users\Admin\AppData\Local\Temp\1500710897.exe
                  7⤵
                  • Suspicious use of NtCreateUserProcessOtherParentProcess
                  • Executes dropped EXE
                  • Suspicious behavior: EnumeratesProcesses
                  PID:5012
              • C:\Users\Admin\AppData\Local\Temp\15548735.exe
                C:\Users\Admin\AppData\Local\Temp\15548735.exe
                6⤵
                • Executes dropped EXE
                PID:4776
              • C:\Users\Admin\AppData\Local\Temp\2182133123.exe
                C:\Users\Admin\AppData\Local\Temp\2182133123.exe
                6⤵
                • Executes dropped EXE
                • Adds Run key to start application
                • Drops file in Windows directory
                • Suspicious use of WriteProcessMemory
                PID:1636
                • C:\Windows\winblrsnrcs.exe
                  C:\Windows\winblrsnrcs.exe
                  7⤵
                  • Modifies security service
                  • Windows security bypass
                  • Executes dropped EXE
                  • Windows security modification
                  • Suspicious use of WriteProcessMemory
                  PID:2080
                  • C:\Users\Admin\AppData\Local\Temp\3120314856.exe
                    C:\Users\Admin\AppData\Local\Temp\3120314856.exe
                    8⤵
                    • Executes dropped EXE
                    PID:1788
                  • C:\Users\Admin\AppData\Local\Temp\3752238891.exe
                    C:\Users\Admin\AppData\Local\Temp\3752238891.exe
                    8⤵
                    • Executes dropped EXE
                    PID:3756
                  • C:\Users\Admin\AppData\Local\Temp\3309330154.exe
                    C:\Users\Admin\AppData\Local\Temp\3309330154.exe
                    8⤵
                    • Executes dropped EXE
                    PID:3216
                  • C:\Users\Admin\AppData\Local\Temp\2559810288.exe
                    C:\Users\Admin\AppData\Local\Temp\2559810288.exe
                    8⤵
                    • Executes dropped EXE
                    PID:4288
      • 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:1952
      • C:\Windows\System32\schtasks.exe
        C:\Windows\System32\schtasks.exe /run /tn "Windows Upgrade Manager"
        2⤵
          PID:1792
        • 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:3812
        • C:\Windows\System32\notepad.exe
          C:\Windows\System32\notepad.exe
          2⤵
            PID:3852
        • 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:3836

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          3KB

          MD5

          fee026663fcb662152188784794028ee

          SHA1

          3c02a26a9cb16648fad85c6477b68ced3cb0cb45

          SHA256

          dbd4136bc342e3e92902ec3a30d165452c82997a7ae24ac90775e42d88959e6b

          SHA512

          7b12bd5c8fc4356b9123d6586b4980cf76012663b41c0dab6f6f21567e2f4005c5bcea2cc2158d157e4f801a281f3e04bad3774cddb3122db309ccf662184bd6

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

          Filesize

          1KB

          MD5

          fc35bf2367ee5c6feb084ab39f5c26eb

          SHA1

          cd9742c05391a92780a81fe836797a5909c7f9c1

          SHA256

          7ad08f1c2e7df4102eb3a6d213f4a0c245300c275fd53e463655a8ab9fa3ec64

          SHA512

          0b6662ea93907902c9f5db98bed4e9d322a69e7b8df921f6b8bd8026fdbfa556b0afe29013e3ecc8982a6339c48b4fe371ba587f02c39de72cb3840ed0e6747b

        • C:\Users\Admin\AppData\Local\Temp\1500710897.exe

          Filesize

          5.4MB

          MD5

          41ab08c1955fce44bfd0c76a64d1945a

          SHA1

          2b9cb05f4de5d98c541d15175d7f0199cbdd0eea

          SHA256

          dd12cb27b3867341bf6ca48715756500d3ec56c19b21bb1c1290806aa74cb493

          SHA512

          38834ae703a8541b4fec9a1db94cfe296ead58649bb1d4873b517df14d0c6a9d25e49ff04c2bf6bb0188845116a4e894aae930d849f9be8c98d2ce51da1ef116

        • C:\Users\Admin\AppData\Local\Temp\15548735.exe

          Filesize

          11KB

          MD5

          cafd277c4132f5d0f202e7ea07a27d5c

          SHA1

          72c8c16a94cce56a3e01d91bc1276dafc65b351d

          SHA256

          e5162fa594811f0f01fc76f4acbd9fe99b2265df9cfcbc346023f28775c19f1e

          SHA512

          7c87d1dec61b78e0f223e8f9fec019d96509813fa6d96129289aab00b2d6f05bf91fe1fafd680b7d9e746f4c2c8cbe48a3028bcaad479048d00d79a19f71b196

        • C:\Users\Admin\AppData\Local\Temp\1998217900.exe

          Filesize

          86KB

          MD5

          fe1e93f12cca3f7c0c897ef2084e1778

          SHA1

          fb588491ddad8b24ea555a6a2727e76cec1fade3

          SHA256

          2ebc4a92f4fdc27d4ab56e57058575a8b18adb076cbd30feea2ecdc8b7fcd41f

          SHA512

          36e0524c465187ae9ad207c724aee45bcd61cfd3fa66a79f9434d24fcbadc0a743834d5e808e6041f3bd88e75deb5afd34193574f005ed97e4b17c6b0388cb93

        • C:\Users\Admin\AppData\Local\Temp\2182133123.exe

          Filesize

          18KB

          MD5

          30dca8b68825d5b3db7a685aa3da0a13

          SHA1

          07320822d14d6caf8825dd6d806c0cde398584f3

          SHA256

          f2dc635cb5fe8b8815ea98d909b67016975ca8e5a43cb39e47595ecd01038a96

          SHA512

          b5f3be086d3f7c751028d8d8a025069743b2472cec10252627f5583492383a5a865e88ad5839d83bf3a3c31b5b630753e77a2c02433d7fbe90aa11acd0f35f0c

        • C:\Users\Admin\AppData\Local\Temp\3120314856.exe

          Filesize

          8KB

          MD5

          87b22e975994246dc5b7c2a3adbf85a5

          SHA1

          1e6528987190f0f5188240cdac553388c39e8590

          SHA256

          17399263a05a9144c1571e8ef88175fd08c61a38e3fcb3a955279d4a2bb9a919

          SHA512

          58c33379879fc75679902d1fe3db0bf1c854151cb6e4bf10496a1d657a8778699be70976bd8bba1ddd3949b24b6ae44cbc0421dd0a8cea13ef5e00179d6599db

        • C:\Users\Admin\AppData\Local\Temp\3130218858.exe

          Filesize

          88KB

          MD5

          ababca6d12d96e8dd2f1d7114b406fae

          SHA1

          dcd9798e83ec688aacb3de8911492a232cb41a32

          SHA256

          a992920e64a64763f3dd8c2a431a0f5e56e5b3782a1496de92bc80ee71cca5ba

          SHA512

          b7fc70c176bdc74cf68b14e694f3e53142e64d39bd6d3e0f2e3a74ce3178ea606f92f760d21db69d72ae6677545a47c7bf390fb65cd5247a48e239f6ae8f7b8f

        • C:\Users\Admin\AppData\Local\Temp\3309330154.exe

          Filesize

          8KB

          MD5

          9b8a3fb66b93c24c52e9c68633b00f37

          SHA1

          2a9290e32d1582217eac32b977961ada243ada9a

          SHA256

          8a169cf165f635ecb6c55cacecb2c202c5fc6ef5fa82ec9cdb7d4b0300f35293

          SHA512

          117da1ec9850212e4cafce6669c2cfffc8078627f5c3ccdfd6a1bf3bee2d351290071087a4c206578d23852fa5e69c2ebefd71905c85b1eaed4220932bb71a39

        • C:\Users\Admin\AppData\Local\Temp\336917521.exe

          Filesize

          10KB

          MD5

          6567b839ec69322ba1aa41b15fbd1e64

          SHA1

          0a2a0770afe094765a5eb88f6201847bf642bea9

          SHA256

          8a4b87ed94fc50767d0bc91291a8b8a436b941b273b29ab0d442ba1cc10b76fb

          SHA512

          2e4798244bf3891beea64ee0b0d106c6f47b7c7d6daf222af6192874dc0ef67491c82e93821c1ff9fbd25cf9ec50178e959adb466b210ff9754dd4e8387a30cf

        • C:\Users\Admin\AppData\Local\Temp\3410.exe

          Filesize

          9KB

          MD5

          8d8e6c7952a9dc7c0c73911c4dbc5518

          SHA1

          9098da03b33b2c822065b49d5220359c275d5e94

          SHA256

          feb4c3ae4566f0acbb9e0f55417b61fefd89dc50a4e684df780813fb01d61278

          SHA512

          91a573843c28dd32a9f31a60ba977f9a3d4bb19ffd1b7254333e09bcecef348c1b3220a348ebb2cb08edb57d56cb7737f026519da52199c9dc62c10aea236645

        • C:\Users\Admin\AppData\Local\Temp\398615499.exe

          Filesize

          88KB

          MD5

          4505daf4c08fc8e8e1380911e98588aa

          SHA1

          d990eb1b2ccbb71c878944be37923b1ebd17bc72

          SHA256

          a2139600c569365149894405d411ea1401bafc8c7e8af1983d046cf087269c40

          SHA512

          bb57d11150086c3c61f9a8fdd2511e3e780a24362183a6b833f44484238451f23b74b244262009f38a8baa7254d07dfdd9d4209efcf426dfd4e651c47f2f8cec

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ge5exvc1.yxc.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • memory/1952-43-0x00000217F7810000-0x00000217F7832000-memory.dmp

          Filesize

          136KB

        • memory/3836-80-0x00007FF68E340000-0x00007FF68E8B6000-memory.dmp

          Filesize

          5.5MB

        • memory/3852-97-0x00007FF6B3FC0000-0x00007FF6B47AF000-memory.dmp

          Filesize

          7.9MB

        • memory/3852-104-0x00007FF6B3FC0000-0x00007FF6B47AF000-memory.dmp

          Filesize

          7.9MB

        • memory/3852-81-0x000001F47E990000-0x000001F47E9B0000-memory.dmp

          Filesize

          128KB

        • memory/3852-111-0x00007FF6B3FC0000-0x00007FF6B47AF000-memory.dmp

          Filesize

          7.9MB

        • memory/3852-113-0x00007FF6B3FC0000-0x00007FF6B47AF000-memory.dmp

          Filesize

          7.9MB

        • memory/3852-120-0x00007FF6B3FC0000-0x00007FF6B47AF000-memory.dmp

          Filesize

          7.9MB

        • memory/3852-121-0x00007FF6B3FC0000-0x00007FF6B47AF000-memory.dmp

          Filesize

          7.9MB

        • memory/3852-122-0x00007FF6B3FC0000-0x00007FF6B47AF000-memory.dmp

          Filesize

          7.9MB

        • memory/3852-123-0x00007FF6B3FC0000-0x00007FF6B47AF000-memory.dmp

          Filesize

          7.9MB

        • memory/3852-134-0x00007FF6B3FC0000-0x00007FF6B47AF000-memory.dmp

          Filesize

          7.9MB

        • memory/3852-135-0x00007FF6B3FC0000-0x00007FF6B47AF000-memory.dmp

          Filesize

          7.9MB

        • memory/5012-57-0x00007FF75ACB0000-0x00007FF75B226000-memory.dmp

          Filesize

          5.5MB