Analysis

  • max time kernel
    69s
  • max time network
    66s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    06-12-2022 10:24

General

  • Target

    dff4e9f059ac7d25232de9806801285c91c9672c06f116393019e27ea93a22af.exe

  • Size

    591KB

  • MD5

    0834efddb9435dded5c3da54ff228b20

  • SHA1

    424842ccd83bc89aa5b71a6d1ba6d7313106e815

  • SHA256

    dff4e9f059ac7d25232de9806801285c91c9672c06f116393019e27ea93a22af

  • SHA512

    a329760633a75654ee9e4fe0c641a8d2752188b79b022367cee9345722279d8329ab7c761dca9ec50527dc0f070dbb049f0944cd697521054f40ae3c26b423a2

  • SSDEEP

    12288:f4To2d5Ji5By5e3Vw/s2l7rsZf/XPxGDyXSMCE4adjkp3bWW9:b2d5Ji5C8VwUD/xGuiGG5d

Malware Config

Signatures

  • ISR Stealer

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

  • ISR Stealer payload 6 IoCs
  • NirSoft MailPassView 3 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 5 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 11 IoCs
  • Executes dropped EXE 3 IoCs
  • UPX packed file 12 IoCs

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

  • Loads dropped DLL 6 IoCs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\dff4e9f059ac7d25232de9806801285c91c9672c06f116393019e27ea93a22af.exe
    "C:\Users\Admin\AppData\Local\Temp\dff4e9f059ac7d25232de9806801285c91c9672c06f116393019e27ea93a22af.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1292
    • C:\Users\Admin\AppData\Local\Temp\SetupVSE.Exe
      "C:\Users\Admin\AppData\Local\Temp\SetupVSE.Exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:2044
    • C:\Users\Admin\AppData\Local\Temp\bg.exe
      "C:\Users\Admin\AppData\Local\Temp\bg.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1776
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\dwm.exe
        "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\dwm.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:568
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe
          "C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe"
          4⤵
          • Suspicious use of SetThreadContext
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:692
          • C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe
            "C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe"
            5⤵
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1504
            • C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe
              "C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe" /scomma C:\Users\Admin\AppData\Local\Temp\data.dmp
              6⤵
                PID:432
              • C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe
                "C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe" /scomma C:\Users\Admin\AppData\Local\Temp\data1.dmp
                6⤵
                • Suspicious use of AdjustPrivilegeToken
                PID:1168
              • C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe
                "C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe" /scomma C:\Users\Admin\AppData\Local\Temp\data2.dmp
                6⤵
                • Accesses Microsoft Outlook accounts
                PID:1604

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\SetupVSE.Exe

      Filesize

      97KB

      MD5

      a1784f7288877ba053b95809620eebea

      SHA1

      747df796963264cd10c7a6f55d09877b87a06052

      SHA256

      8c6871d0b4d523ab15400a874b3435021bd9755c42b0df865b8a6c3448ffafb5

      SHA512

      804501fdf6f49a3f33a68f12acd2b6e41bf73193a1f4628a70498f0fab4ec37349c1e2aed2205ff0c07d42ef0d892d59080e755beca5b0889d178dfdb5737764

    • C:\Users\Admin\AppData\Local\Temp\SetupVSE.Exe

      Filesize

      97KB

      MD5

      a1784f7288877ba053b95809620eebea

      SHA1

      747df796963264cd10c7a6f55d09877b87a06052

      SHA256

      8c6871d0b4d523ab15400a874b3435021bd9755c42b0df865b8a6c3448ffafb5

      SHA512

      804501fdf6f49a3f33a68f12acd2b6e41bf73193a1f4628a70498f0fab4ec37349c1e2aed2205ff0c07d42ef0d892d59080e755beca5b0889d178dfdb5737764

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

      Filesize

      540KB

      MD5

      f7b271e98fd35bdc7935f6b533c19049

      SHA1

      b020a9b5e764a6d6aad47d072cead299c6d40a3d

      SHA256

      047cba010b09eb8277ff96e7e7e40a53507790749f6d3e949e22af62b1328778

      SHA512

      a0971af239ce443a10819c6983b7f25715970368a4c2dc5af2ae8fd281a465696630efedc3ab80ae0e98c28eafc23621125d0afc904050459b439df0681c8d5b

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

      Filesize

      540KB

      MD5

      f7b271e98fd35bdc7935f6b533c19049

      SHA1

      b020a9b5e764a6d6aad47d072cead299c6d40a3d

      SHA256

      047cba010b09eb8277ff96e7e7e40a53507790749f6d3e949e22af62b1328778

      SHA512

      a0971af239ce443a10819c6983b7f25715970368a4c2dc5af2ae8fd281a465696630efedc3ab80ae0e98c28eafc23621125d0afc904050459b439df0681c8d5b

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\dwm.exe

      Filesize

      540KB

      MD5

      f7b271e98fd35bdc7935f6b533c19049

      SHA1

      b020a9b5e764a6d6aad47d072cead299c6d40a3d

      SHA256

      047cba010b09eb8277ff96e7e7e40a53507790749f6d3e949e22af62b1328778

      SHA512

      a0971af239ce443a10819c6983b7f25715970368a4c2dc5af2ae8fd281a465696630efedc3ab80ae0e98c28eafc23621125d0afc904050459b439df0681c8d5b

    • \Users\Admin\AppData\Local\Temp\SetupVSE.Exe

      Filesize

      97KB

      MD5

      a1784f7288877ba053b95809620eebea

      SHA1

      747df796963264cd10c7a6f55d09877b87a06052

      SHA256

      8c6871d0b4d523ab15400a874b3435021bd9755c42b0df865b8a6c3448ffafb5

      SHA512

      804501fdf6f49a3f33a68f12acd2b6e41bf73193a1f4628a70498f0fab4ec37349c1e2aed2205ff0c07d42ef0d892d59080e755beca5b0889d178dfdb5737764

    • \Users\Admin\AppData\Local\Temp\SetupVSE.Exe

      Filesize

      97KB

      MD5

      a1784f7288877ba053b95809620eebea

      SHA1

      747df796963264cd10c7a6f55d09877b87a06052

      SHA256

      8c6871d0b4d523ab15400a874b3435021bd9755c42b0df865b8a6c3448ffafb5

      SHA512

      804501fdf6f49a3f33a68f12acd2b6e41bf73193a1f4628a70498f0fab4ec37349c1e2aed2205ff0c07d42ef0d892d59080e755beca5b0889d178dfdb5737764

    • \Users\Admin\AppData\Local\Temp\SetupVSE.Exe

      Filesize

      97KB

      MD5

      a1784f7288877ba053b95809620eebea

      SHA1

      747df796963264cd10c7a6f55d09877b87a06052

      SHA256

      8c6871d0b4d523ab15400a874b3435021bd9755c42b0df865b8a6c3448ffafb5

      SHA512

      804501fdf6f49a3f33a68f12acd2b6e41bf73193a1f4628a70498f0fab4ec37349c1e2aed2205ff0c07d42ef0d892d59080e755beca5b0889d178dfdb5737764

    • \Users\Admin\AppData\Local\Temp\bg.exe

      Filesize

      540KB

      MD5

      f7b271e98fd35bdc7935f6b533c19049

      SHA1

      b020a9b5e764a6d6aad47d072cead299c6d40a3d

      SHA256

      047cba010b09eb8277ff96e7e7e40a53507790749f6d3e949e22af62b1328778

      SHA512

      a0971af239ce443a10819c6983b7f25715970368a4c2dc5af2ae8fd281a465696630efedc3ab80ae0e98c28eafc23621125d0afc904050459b439df0681c8d5b

    • \Users\Admin\AppData\Local\Temp\bg.exe

      Filesize

      540KB

      MD5

      f7b271e98fd35bdc7935f6b533c19049

      SHA1

      b020a9b5e764a6d6aad47d072cead299c6d40a3d

      SHA256

      047cba010b09eb8277ff96e7e7e40a53507790749f6d3e949e22af62b1328778

      SHA512

      a0971af239ce443a10819c6983b7f25715970368a4c2dc5af2ae8fd281a465696630efedc3ab80ae0e98c28eafc23621125d0afc904050459b439df0681c8d5b

    • \Users\Admin\AppData\Local\Temp\bg.exe

      Filesize

      540KB

      MD5

      f7b271e98fd35bdc7935f6b533c19049

      SHA1

      b020a9b5e764a6d6aad47d072cead299c6d40a3d

      SHA256

      047cba010b09eb8277ff96e7e7e40a53507790749f6d3e949e22af62b1328778

      SHA512

      a0971af239ce443a10819c6983b7f25715970368a4c2dc5af2ae8fd281a465696630efedc3ab80ae0e98c28eafc23621125d0afc904050459b439df0681c8d5b

    • memory/432-139-0x0000000000400000-0x0000000000454000-memory.dmp

      Filesize

      336KB

    • memory/432-114-0x0000000000400000-0x0000000000454000-memory.dmp

      Filesize

      336KB

    • memory/432-112-0x0000000000400000-0x0000000000454000-memory.dmp

      Filesize

      336KB

    • memory/432-119-0x0000000000400000-0x0000000000454000-memory.dmp

      Filesize

      336KB

    • memory/432-146-0x0000000000400000-0x0000000000454000-memory.dmp

      Filesize

      336KB

    • memory/568-89-0x0000000074380000-0x000000007492B000-memory.dmp

      Filesize

      5.7MB

    • memory/568-75-0x0000000074380000-0x000000007492B000-memory.dmp

      Filesize

      5.7MB

    • memory/568-76-0x0000000074380000-0x000000007492B000-memory.dmp

      Filesize

      5.7MB

    • memory/692-78-0x0000000000400000-0x0000000000470000-memory.dmp

      Filesize

      448KB

    • memory/692-80-0x0000000000400000-0x0000000000470000-memory.dmp

      Filesize

      448KB

    • memory/692-82-0x0000000000400000-0x0000000000470000-memory.dmp

      Filesize

      448KB

    • memory/692-85-0x0000000000400000-0x0000000000470000-memory.dmp

      Filesize

      448KB

    • memory/692-77-0x0000000000400000-0x0000000000470000-memory.dmp

      Filesize

      448KB

    • memory/692-147-0x0000000000400000-0x0000000000470000-memory.dmp

      Filesize

      448KB

    • memory/692-137-0x0000000000400000-0x0000000000470000-memory.dmp

      Filesize

      448KB

    • memory/1168-122-0x0000000000400000-0x0000000000426000-memory.dmp

      Filesize

      152KB

    • memory/1168-117-0x0000000000400000-0x0000000000426000-memory.dmp

      Filesize

      152KB

    • memory/1168-144-0x0000000000400000-0x0000000000426000-memory.dmp

      Filesize

      152KB

    • memory/1168-141-0x0000000000400000-0x0000000000426000-memory.dmp

      Filesize

      152KB

    • memory/1168-132-0x0000000000400000-0x0000000000426000-memory.dmp

      Filesize

      152KB

    • memory/1168-133-0x0000000000400000-0x0000000000426000-memory.dmp

      Filesize

      152KB

    • memory/1168-128-0x0000000000400000-0x0000000000426000-memory.dmp

      Filesize

      152KB

    • memory/1292-54-0x00000000762E1000-0x00000000762E3000-memory.dmp

      Filesize

      8KB

    • memory/1504-109-0x0000000000400000-0x000000000045F000-memory.dmp

      Filesize

      380KB

    • memory/1504-102-0x0000000000400000-0x000000000045F000-memory.dmp

      Filesize

      380KB

    • memory/1504-107-0x0000000000400000-0x000000000045F000-memory.dmp

      Filesize

      380KB

    • memory/1504-105-0x0000000000400000-0x000000000045F000-memory.dmp

      Filesize

      380KB

    • memory/1504-93-0x0000000000400000-0x000000000045F000-memory.dmp

      Filesize

      380KB

    • memory/1504-90-0x0000000000400000-0x000000000045F000-memory.dmp

      Filesize

      380KB

    • memory/1504-111-0x0000000000400000-0x000000000045F000-memory.dmp

      Filesize

      380KB

    • memory/1504-91-0x0000000000400000-0x000000000045F000-memory.dmp

      Filesize

      380KB

    • memory/1504-148-0x0000000000400000-0x000000000045F000-memory.dmp

      Filesize

      380KB

    • memory/1504-96-0x0000000000400000-0x000000000045F000-memory.dmp

      Filesize

      380KB

    • memory/1504-101-0x0000000000400000-0x000000000045F000-memory.dmp

      Filesize

      380KB

    • memory/1504-95-0x0000000000400000-0x000000000045F000-memory.dmp

      Filesize

      380KB

    • memory/1504-94-0x0000000000400000-0x000000000045F000-memory.dmp

      Filesize

      380KB

    • memory/1504-97-0x0000000000400000-0x000000000045F000-memory.dmp

      Filesize

      380KB

    • memory/1504-135-0x0000000000400000-0x000000000045F000-memory.dmp

      Filesize

      380KB

    • memory/1504-99-0x0000000000400000-0x000000000045F000-memory.dmp

      Filesize

      380KB

    • memory/1604-143-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/1604-138-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/1604-129-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/1604-142-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/1604-126-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/1604-145-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/1776-70-0x0000000074380000-0x000000007492B000-memory.dmp

      Filesize

      5.7MB

    • memory/1776-69-0x0000000074380000-0x000000007492B000-memory.dmp

      Filesize

      5.7MB

    • memory/1776-74-0x0000000074380000-0x000000007492B000-memory.dmp

      Filesize

      5.7MB