Analysis

  • max time kernel
    173s
  • max time network
    176s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/10/2022, 17:14

General

  • Target
    0a3611b8e640f07b495d536318bc34eccec79552d2591d05a0015227ec1e62d8.exe
  • Size 368KB
  • Sample221030-vr1tsabdb9
  • SHA256 0a3611b8e640f07b495d536318bc34eccec79552d2591d05a0015227ec1e62d8
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • ISR Stealer

    ISR Stealer is a modified version of Hackhound Stealer written in visual basic.

  • ISR Stealer payload 18 IoCs
  • NirSoft MailPassView 8 IoCs

    Password recovery tool for various email clients

  • Nirsoft 8 IoCs
  • Executes dropped EXE 3 IoCs
  • UPX packed file 23 IoCs

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

  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Uses the VBS compiler for execution 1 TTPs
  • Accesses Microsoft Outlook accounts 1 TTPs 6 IoCs
  • Suspicious use of SetThreadContext 21 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0a3611b8e640f07b495d536318bc34eccec79552d2591d05a0015227ec1e62d8.exe
    "C:\Users\Admin\AppData\Local\Temp\0a3611b8e640f07b495d536318bc34eccec79552d2591d05a0015227ec1e62d8.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1584
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
      "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:224
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
        /scomma "C:\Users\Admin\AppData\Local\Temp\rTzsdwVrNy.ini"
        3⤵
          PID:4372
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
          /scomma "C:\Users\Admin\AppData\Local\Temp\WKce1qBjed.ini"
          3⤵
          • Accesses Microsoft Outlook accounts
          PID:2044
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\NcbService.exe
        "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\NcbService.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3496
        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\CertPropSvc.exe
          C:\Users\Admin\AppData\Roaming\Microsoft\Windows\CertPropSvc
          3⤵
          • Executes dropped EXE
          • Checks computer location settings
          • Suspicious use of SetThreadContext
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1480
          • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
            "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe"
            4⤵
            • Suspicious use of SetThreadContext
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:1148
            • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
              /scomma "C:\Users\Admin\AppData\Local\Temp\vC7dwSklhu.ini"
              5⤵
                PID:3688
              • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
                /scomma "C:\Users\Admin\AppData\Local\Temp\wy2EfpdFT1.ini"
                5⤵
                • Accesses Microsoft Outlook accounts
                PID:1548
            • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\NcbService.exe
              "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\NcbService.exe"
              4⤵
              • Executes dropped EXE
              • Suspicious use of AdjustPrivilegeToken
              PID:4132
            • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
              "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe"
              4⤵
              • Suspicious use of SetThreadContext
              • Suspicious use of SetWindowsHookEx
              • Suspicious use of WriteProcessMemory
              PID:1468
              • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
                /scomma "C:\Users\Admin\AppData\Local\Temp\gvvCFXUZI6.ini"
                5⤵
                  PID:2516
                • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
                  /scomma "C:\Users\Admin\AppData\Local\Temp\1jiMqZcg1t.ini"
                  5⤵
                  • Accesses Microsoft Outlook accounts
                  PID:2180
              • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
                "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe"
                4⤵
                • Suspicious use of SetThreadContext
                • Suspicious use of SetWindowsHookEx
                PID:4896
                • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
                  /scomma "C:\Users\Admin\AppData\Local\Temp\x7IGbi9v2P.ini"
                  5⤵
                    PID:4812
                  • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
                    /scomma "C:\Users\Admin\AppData\Local\Temp\4F95XsP5Ox.ini"
                    5⤵
                    • Accesses Microsoft Outlook accounts
                    PID:3176
                • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
                  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe"
                  4⤵
                  • Suspicious use of SetThreadContext
                  • Suspicious use of SetWindowsHookEx
                  PID:2600
                  • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
                    /scomma "C:\Users\Admin\AppData\Local\Temp\sqeXhefXum.ini"
                    5⤵
                      PID:3356
                    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
                      /scomma "C:\Users\Admin\AppData\Local\Temp\RoNbPy3M2h.ini"
                      5⤵
                      • Accesses Microsoft Outlook accounts
                      PID:3364
                  • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
                    "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe"
                    4⤵
                    • Suspicious use of SetThreadContext
                    • Suspicious use of SetWindowsHookEx
                    PID:428
                    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
                      /scomma "C:\Users\Admin\AppData\Local\Temp\Wn78rLAIoR.ini"
                      5⤵
                        PID:4404
                      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
                        /scomma "C:\Users\Admin\AppData\Local\Temp\GAsQ0zb30c.ini"
                        5⤵
                        • Accesses Microsoft Outlook accounts
                        PID:4656
                    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
                      "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe"
                      4⤵
                      • Suspicious use of SetThreadContext
                      • Suspicious use of SetWindowsHookEx
                      PID:1512
                      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
                        /scomma "C:\Users\Admin\AppData\Local\Temp\TycdLsa2b5.ini"
                        5⤵
                          PID:3384
                        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
                          /scomma "C:\Users\Admin\AppData\Local\Temp\mNzygzYJnV.ini"
                          5⤵
                            PID:4768

                  Network

                        MITRE ATT&CK Enterprise v6

                        Replay Monitor

                        Loading Replay Monitor...

                        Downloads

                        07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

                        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
                        • Size 2KB
                        • SHA256 b14043ac188588e6e6282e515cc581ca0aaae5fbf84a0cf087204bae7fcdad55
                        • MD5 SHA1 SHA512

                        B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

                        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
                        • Size 1KB
                        • SHA256 35188ecd41bd046f9f71e26f5404d5406be5e20bf8f2b6963adaec084783bef5
                        • MD5 SHA1 SHA512

                        C6872375A2E1BC120603F5605C3CEC71

                        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\C6872375A2E1BC120603F5605C3CEC71
                        • Size 472B
                        • SHA256 87acc146d56827026e9c6843a2787d7845c103ef7ebc56b68fcc36001da44539
                        • MD5 SHA1 SHA512

                        07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

                        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
                        • Size 488B
                        • SHA256 03a44aadc69a533c66e94132930c3e69e5c385528b891b0bd68a598eeb950e79
                        • MD5 SHA1 SHA512

                        B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

                        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
                        • Size 482B
                        • SHA256 d232c90cd7a042a147c39a65144f83771c62ea45f9b69051256a2f44879b47d4
                        • MD5 SHA1 SHA512

                        C6872375A2E1BC120603F5605C3CEC71

                        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\C6872375A2E1BC120603F5605C3CEC71
                        • Size 484B
                        • SHA256 a987b34ea6f6e9c7d428dc30658b613403ef03e016b28e94dc78972065c882dd
                        • MD5 SHA1 SHA512

                        NcbService.exe.log

                        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\NcbService.exe.log
                        • Size 404B
                        • SHA256 529f9fde2234067382b4c6fb8e5aee49d8a8b1b85c82b0bdae425fa2a0264f75
                        • MD5 SHA1 SHA512

                        index[1].htm

                        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\48VMALJK\index[1].htm
                        • Size 162B
                        • SHA256 9e17cb15dd75bbbd5dbb984eda674863c3b10ab72613cf8a39a00c3e11a8492a
                        • MD5 SHA1 SHA512

                        index[1].htm

                        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\48VMALJK\index[1].htm
                        • Size 162B
                        • SHA256 9e17cb15dd75bbbd5dbb984eda674863c3b10ab72613cf8a39a00c3e11a8492a
                        • MD5 SHA1 SHA512

                        index[1].htm

                        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\48VMALJK\index[1].htm
                        • Size 162B
                        • SHA256 9e17cb15dd75bbbd5dbb984eda674863c3b10ab72613cf8a39a00c3e11a8492a
                        • MD5 SHA1 SHA512

                        index[1].htm

                        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\DUHIRKGY\index[1].htm
                        • Size 162B
                        • SHA256 9e17cb15dd75bbbd5dbb984eda674863c3b10ab72613cf8a39a00c3e11a8492a
                        • MD5 SHA1 SHA512

                        index[1].htm

                        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\DUHIRKGY\index[1].htm
                        • Size 162B
                        • SHA256 9e17cb15dd75bbbd5dbb984eda674863c3b10ab72613cf8a39a00c3e11a8492a
                        • MD5 SHA1 SHA512

                        index[1].htm

                        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\DUHIRKGY\index[1].htm
                        • Size 162B
                        • SHA256 9e17cb15dd75bbbd5dbb984eda674863c3b10ab72613cf8a39a00c3e11a8492a
                        • MD5 SHA1 SHA512

                        TycdLsa2b5.ini

                        • Path C:\Users\Admin\AppData\Local\Temp\TycdLsa2b5.ini
                        • Size 5B
                        • SHA256 fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
                        • MD5 SHA1 SHA512

                        Wn78rLAIoR.ini

                        • Path C:\Users\Admin\AppData\Local\Temp\Wn78rLAIoR.ini
                        • Size 5B
                        • SHA256 fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
                        • MD5 SHA1 SHA512

                        gvvCFXUZI6.ini

                        • Path C:\Users\Admin\AppData\Local\Temp\gvvCFXUZI6.ini
                        • Size 5B
                        • SHA256 fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
                        • MD5 SHA1 SHA512

                        rTzsdwVrNy.ini

                        • Path C:\Users\Admin\AppData\Local\Temp\rTzsdwVrNy.ini
                        • Size 5B
                        • SHA256 fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
                        • MD5 SHA1 SHA512

                        sqeXhefXum.ini

                        • Path C:\Users\Admin\AppData\Local\Temp\sqeXhefXum.ini
                        • Size 5B
                        • SHA256 fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
                        • MD5 SHA1 SHA512

                        vC7dwSklhu.ini

                        • Path C:\Users\Admin\AppData\Local\Temp\vC7dwSklhu.ini
                        • Size 5B
                        • SHA256 fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
                        • MD5 SHA1 SHA512

                        x7IGbi9v2P.ini

                        • Path C:\Users\Admin\AppData\Local\Temp\x7IGbi9v2P.ini
                        • Size 5B
                        • SHA256 fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
                        • MD5 SHA1 SHA512

                        CertPropSvc.exe

                        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\CertPropSvc.exe
                        • Size 368KB
                        • SHA256 0a3611b8e640f07b495d536318bc34eccec79552d2591d05a0015227ec1e62d8
                        • MD5 SHA1 SHA512 SSDEEP

                        CertPropSvc.exe

                        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\CertPropSvc.exe
                        • Size 368KB
                        • SHA256 0a3611b8e640f07b495d536318bc34eccec79552d2591d05a0015227ec1e62d8
                        • MD5 SHA1 SHA512 SSDEEP

                        NcbService.exe

                        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\NcbService.exe
                        • Size 11KB
                        • SHA256 cae810e9bbd9ad8faeff1229bfc182e611c6064ee1ce273c8e9d45df4709d7dc
                        • MD5 SHA1 SHA512 SSDEEP

                        NcbService.exe

                        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\NcbService.exe
                        • Size 11KB
                        • SHA256 cae810e9bbd9ad8faeff1229bfc182e611c6064ee1ce273c8e9d45df4709d7dc
                        • MD5 SHA1 SHA512 SSDEEP

                        NcbService.exe

                        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\NcbService.exe
                        • Size 11KB
                        • SHA256 cae810e9bbd9ad8faeff1229bfc182e611c6064ee1ce273c8e9d45df4709d7dc
                        • MD5 SHA1 SHA512 SSDEEP

                        NcbService.exe

                        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\NcbService.exe
                        • Size 11KB
                        • SHA256 cae810e9bbd9ad8faeff1229bfc182e611c6064ee1ce273c8e9d45df4709d7dc
                        • MD5 SHA1 SHA512 SSDEEP

                        memory/224-145-0x0000000000400000-0x0000000000442000-memory.dmp

                        memory/224-196-0x0000000000400000-0x0000000000442000-memory.dmp

                        memory/224-135-0x0000000000400000-0x0000000000442000-memory.dmp

                        memory/428-275-0x0000000000400000-0x0000000000442000-memory.dmp

                        memory/428-284-0x0000000000400000-0x0000000000442000-memory.dmp

                        memory/1148-198-0x0000000000400000-0x0000000000442000-memory.dmp

                        memory/1148-162-0x0000000000400000-0x0000000000442000-memory.dmp

                        memory/1148-197-0x0000000000400000-0x0000000000442000-memory.dmp

                        memory/1468-210-0x0000000000400000-0x0000000000442000-memory.dmp

                        memory/1468-220-0x0000000000400000-0x0000000000442000-memory.dmp

                        memory/1468-221-0x0000000000400000-0x0000000000442000-memory.dmp

                        memory/1480-156-0x0000000075420000-0x00000000759D1000-memory.dmp

                        memory/1480-153-0x0000000075420000-0x00000000759D1000-memory.dmp

                        memory/1512-296-0x0000000000400000-0x0000000000442000-memory.dmp

                        memory/1548-195-0x0000000000400000-0x000000000041F000-memory.dmp

                        memory/1584-132-0x0000000075420000-0x00000000759D1000-memory.dmp

                        memory/1584-133-0x0000000075420000-0x00000000759D1000-memory.dmp

                        memory/1584-158-0x0000000075420000-0x00000000759D1000-memory.dmp

                        memory/2044-181-0x0000000000400000-0x000000000041F000-memory.dmp

                        memory/2044-180-0x0000000000400000-0x000000000041F000-memory.dmp

                        memory/2044-179-0x0000000000400000-0x000000000041F000-memory.dmp

                        memory/2044-177-0x0000000000400000-0x000000000041F000-memory.dmp

                        memory/2180-219-0x0000000000400000-0x000000000041F000-memory.dmp

                        memory/2180-218-0x0000000000400000-0x000000000041F000-memory.dmp

                        memory/2180-217-0x0000000000400000-0x000000000041F000-memory.dmp

                        memory/2516-208-0x0000000000400000-0x0000000000453000-memory.dmp

                        memory/2516-209-0x0000000000400000-0x0000000000453000-memory.dmp

                        memory/2516-207-0x0000000000400000-0x0000000000453000-memory.dmp

                        memory/2600-263-0x0000000000400000-0x0000000000442000-memory.dmp

                        memory/2600-254-0x0000000000400000-0x0000000000442000-memory.dmp

                        memory/2600-264-0x0000000000400000-0x0000000000442000-memory.dmp

                        memory/3176-240-0x0000000000400000-0x000000000041F000-memory.dmp

                        memory/3356-253-0x0000000000400000-0x0000000000453000-memory.dmp

                        memory/3364-262-0x0000000000400000-0x000000000041F000-memory.dmp

                        memory/3384-295-0x0000000000400000-0x0000000000453000-memory.dmp

                        memory/3496-157-0x0000000075420000-0x00000000759D1000-memory.dmp

                        memory/3496-155-0x0000000075420000-0x00000000759D1000-memory.dmp

                        memory/3496-149-0x0000000075420000-0x00000000759D1000-memory.dmp

                        memory/3688-169-0x0000000000400000-0x0000000000453000-memory.dmp

                        memory/3688-168-0x0000000000400000-0x0000000000453000-memory.dmp

                        memory/3688-170-0x0000000000400000-0x0000000000453000-memory.dmp

                        memory/4132-175-0x0000000075420000-0x00000000759D1000-memory.dmp

                        memory/4132-211-0x0000000075420000-0x00000000759D1000-memory.dmp

                        memory/4372-143-0x0000000000400000-0x0000000000453000-memory.dmp

                        memory/4372-144-0x0000000000400000-0x0000000000453000-memory.dmp

                        memory/4372-140-0x0000000000400000-0x0000000000453000-memory.dmp

                        memory/4372-142-0x0000000000400000-0x0000000000453000-memory.dmp

                        memory/4656-283-0x0000000000400000-0x000000000041F000-memory.dmp

                        memory/4896-241-0x0000000000400000-0x0000000000442000-memory.dmp

                        memory/4896-232-0x0000000000400000-0x0000000000442000-memory.dmp

                        memory/4896-242-0x0000000000400000-0x0000000000442000-memory.dmp