Resubmissions
12-04-2024 22:28
240412-2d43lsfe55 10Analysis
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max time kernel
74s -
max time network
23s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
13-04-2024 16:50
Static task
static1
General
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Target
MrsMajor3.0.exe
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Size
381KB
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MD5
35a27d088cd5be278629fae37d464182
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SHA1
d5a291fadead1f2a0cf35082012fe6f4bf22a3ab
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SHA256
4a75f2db1dbd3c1218bb9994b7e1c690c4edd4e0c1a675de8d2a127611173e69
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SHA512
eb0be3026321864bd5bcf53b88dc951711d8c0b4bcbd46800b90ca5116a56dba22452530e29f3ccbbcc43d943bdefc8ed8ca2d31ba2e7e5f0e594f74adba4ab5
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SSDEEP
6144:Th3idhONY259BH1DzJ5PzVNtGgc+F9TBd096cTKAsLEbqqbd+VWM8AHiKn9SlXNA:Th3iXPw9Tc6kVXMHHLEf8l7
Malware Config
Signatures
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Processes:
wscript.exewscript.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" wscript.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" wscript.exe -
Executes dropped EXE 4 IoCs
Processes:
eulascr.exeeulascr.exeeulascr.exeeulascr.exepid process 2520 eulascr.exe 1512 eulascr.exe 268 eulascr.exe 1540 eulascr.exe -
Loads dropped DLL 4 IoCs
Processes:
eulascr.exeeulascr.exeeulascr.exeeulascr.exepid process 2520 eulascr.exe 1512 eulascr.exe 268 eulascr.exe 1540 eulascr.exe -
Obfuscated with Agile.Net obfuscator 9 IoCs
Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.
Processes:
resource yara_rule C:\Users\Admin\AppData\Local\Temp\454.tmp\eulascr.exe agile_net behavioral1/memory/2520-8-0x0000000000B60000-0x0000000000B8A000-memory.dmp agile_net behavioral1/memory/2520-10-0x000000001AFB0000-0x000000001B030000-memory.dmp agile_net behavioral1/memory/1512-21-0x00000000013E0000-0x000000000140A000-memory.dmp agile_net behavioral1/memory/1512-23-0x0000000000CB0000-0x0000000000D30000-memory.dmp agile_net behavioral1/memory/268-31-0x0000000000060000-0x000000000008A000-memory.dmp agile_net behavioral1/memory/268-35-0x000000001B560000-0x000000001B5E0000-memory.dmp agile_net behavioral1/memory/1540-47-0x00000000000A0000-0x00000000000CA000-memory.dmp agile_net behavioral1/memory/1540-50-0x000000001ACE0000-0x000000001AD60000-memory.dmp agile_net -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
eulascr.exeeulascr.exeeulascr.exeeulascr.exepid process 2520 eulascr.exe 1512 eulascr.exe 268 eulascr.exe 1540 eulascr.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
Processes:
eulascr.exeeulascr.exeeulascr.exeeulascr.exedescription pid process Token: SeDebugPrivilege 2520 eulascr.exe Token: SeDebugPrivilege 1512 eulascr.exe Token: SeDebugPrivilege 268 eulascr.exe Token: SeDebugPrivilege 1540 eulascr.exe -
Suspicious use of FindShellTrayWindow 2 IoCs
Processes:
eulascr.exepid process 2520 eulascr.exe 2520 eulascr.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
MrsMajor3.0.exewscript.exeMrsMajor3.0.exewscript.exedescription pid process target process PID 2280 wrote to memory of 1636 2280 MrsMajor3.0.exe wscript.exe PID 2280 wrote to memory of 1636 2280 MrsMajor3.0.exe wscript.exe PID 2280 wrote to memory of 1636 2280 MrsMajor3.0.exe wscript.exe PID 1636 wrote to memory of 2520 1636 wscript.exe eulascr.exe PID 1636 wrote to memory of 2520 1636 wscript.exe eulascr.exe PID 1636 wrote to memory of 2520 1636 wscript.exe eulascr.exe PID 3016 wrote to memory of 304 3016 MrsMajor3.0.exe wscript.exe PID 3016 wrote to memory of 304 3016 MrsMajor3.0.exe wscript.exe PID 3016 wrote to memory of 304 3016 MrsMajor3.0.exe wscript.exe PID 304 wrote to memory of 1540 304 wscript.exe eulascr.exe PID 304 wrote to memory of 1540 304 wscript.exe eulascr.exe PID 304 wrote to memory of 1540 304 wscript.exe eulascr.exe -
System policy modification 1 TTPs 4 IoCs
Processes:
wscript.exewscript.exedescription ioc process Key created \REGISTRY\MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System wscript.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" wscript.exe Key created \REGISTRY\MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System wscript.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" wscript.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\MrsMajor3.0.exe"C:\Users\Admin\AppData\Local\Temp\MrsMajor3.0.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\wscript.exe"C:\Windows\system32\wscript.exe" C:\Users\Admin\AppData\Local\Temp\454.tmp\455.tmp\456.vbs //Nologo2⤵
- UAC bypass
- Suspicious use of WriteProcessMemory
- System policy modification
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C:\Users\Admin\AppData\Local\Temp\454.tmp\eulascr.exe"C:\Users\Admin\AppData\Local\Temp\454.tmp\eulascr.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
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C:\Windows\explorer.exe"C:\Windows\explorer.exe"1⤵
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C:\Windows\system32\wermgr.exe"C:\Windows\system32\wermgr.exe" "-outproc" "1104" "3592"1⤵
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C:\Users\Admin\AppData\Local\Temp\454.tmp\eulascr.exe"C:\Users\Admin\AppData\Local\Temp\454.tmp\eulascr.exe"1⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\wermgr.exe"C:\Windows\system32\wermgr.exe" "-outproc" "1104" "3808"1⤵
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C:\Users\Admin\AppData\Local\Temp\454.tmp\eulascr.exe"C:\Users\Admin\AppData\Local\Temp\454.tmp\eulascr.exe"1⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\MrsMajor3.0.exe"C:\Users\Admin\AppData\Local\Temp\MrsMajor3.0.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\wscript.exe"C:\Windows\system32\wscript.exe" C:\Users\Admin\AppData\Local\Temp\13FE.tmp\13FF.tmp\1400.vbs //Nologo2⤵
- UAC bypass
- Suspicious use of WriteProcessMemory
- System policy modification
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C:\Users\Admin\AppData\Local\Temp\13FE.tmp\eulascr.exe"C:\Users\Admin\AppData\Local\Temp\13FE.tmp\eulascr.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\454.tmp\455.tmp\456.vbsFilesize
352B
MD53b8696ecbb737aad2a763c4eaf62c247
SHA14a2d7a2d61d3f4c414b4e5d2933cd404b8f126e5
SHA256ce95f7eea8b303bc23cfd6e41748ad4e7b5e0f0f1d3bdf390eadb1e354915569
SHA512713d9697b892b9dd892537e8a01eab8d0265ebf64867c8beecf7a744321257c2a5c11d4de18fcb486bb69f199422ce3cab8b6afdbe880481c47b06ba8f335beb
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C:\Users\Admin\AppData\Local\Temp\454.tmp\eulascr.exeFilesize
143KB
MD58b1c352450e480d9320fce5e6f2c8713
SHA1d6bd88bf33de7c5d4e68b233c37cc1540c97bd3a
SHA2562c343174231b55e463ca044d19d47bd5842793c15954583eb340bfd95628516e
SHA5122d8e43b1021da08ed1bf5aff110159e6bc10478102c024371302ccfce595e77fd76794658617b5b52f9a50190db250c1ba486d247d9cd69e4732a768edbb4cbc
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\Users\Admin\AppData\Local\Temp\5a530dfd-bc51-4992-a05d-f09d41a331d4\AgileDotNetRT64.dllFilesize
75KB
MD542b2c266e49a3acd346b91e3b0e638c0
SHA12bc52134f03fcc51cb4e0f6c7cf70646b4df7dd1
SHA256adeed015f06efa363d504a18acb671b1db4b20b23664a55c9bc28aef3283ca29
SHA512770822fd681a1d98afe03f6fbe5f116321b54c8e2989fb07491811fd29fca5b666f1adf4c6900823af1271e342cacc9293e9db307c4eef852d1a253b00347a81
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memory/268-38-0x000007FEF51E0000-0x000007FEF5BCC000-memory.dmpFilesize
9.9MB
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memory/268-37-0x000000001B560000-0x000000001B5E0000-memory.dmpFilesize
512KB
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memory/268-36-0x000000001B560000-0x000000001B5E0000-memory.dmpFilesize
512KB
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memory/268-35-0x000000001B560000-0x000000001B5E0000-memory.dmpFilesize
512KB
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memory/268-34-0x000007FEF3A20000-0x000007FEF3B4C000-memory.dmpFilesize
1.2MB
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memory/268-33-0x000007FEF51E0000-0x000007FEF5BCC000-memory.dmpFilesize
9.9MB
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memory/268-31-0x0000000000060000-0x000000000008A000-memory.dmpFilesize
168KB
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memory/1512-28-0x0000000000CB0000-0x0000000000D30000-memory.dmpFilesize
512KB
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memory/1512-26-0x000007FEF3AC0000-0x000007FEF3BEC000-memory.dmpFilesize
1.2MB
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memory/1512-23-0x0000000000CB0000-0x0000000000D30000-memory.dmpFilesize
512KB
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memory/1512-27-0x0000000000CB0000-0x0000000000D30000-memory.dmpFilesize
512KB
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memory/1512-21-0x00000000013E0000-0x000000000140A000-memory.dmpFilesize
168KB
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memory/1512-29-0x000007FEF5280000-0x000007FEF5C6C000-memory.dmpFilesize
9.9MB
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memory/1512-22-0x000007FEF5280000-0x000007FEF5C6C000-memory.dmpFilesize
9.9MB
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memory/1540-48-0x000007FEF5670000-0x000007FEF605C000-memory.dmpFilesize
9.9MB
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memory/1540-47-0x00000000000A0000-0x00000000000CA000-memory.dmpFilesize
168KB
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memory/1540-50-0x000000001ACE0000-0x000000001AD60000-memory.dmpFilesize
512KB
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memory/1540-51-0x000007FEF3EB0000-0x000007FEF3FDC000-memory.dmpFilesize
1.2MB
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memory/1540-52-0x000000001ACE0000-0x000000001AD60000-memory.dmpFilesize
512KB
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memory/1540-53-0x000007FEF5670000-0x000007FEF605C000-memory.dmpFilesize
9.9MB
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memory/2520-18-0x000000001AFB0000-0x000000001B030000-memory.dmpFilesize
512KB
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memory/2520-17-0x000007FEF45B0000-0x000007FEF46DC000-memory.dmpFilesize
1.2MB
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memory/2520-10-0x000000001AFB0000-0x000000001B030000-memory.dmpFilesize
512KB
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memory/2520-9-0x000007FEF5C70000-0x000007FEF665C000-memory.dmpFilesize
9.9MB
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memory/2520-8-0x0000000000B60000-0x0000000000B8A000-memory.dmpFilesize
168KB
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memory/2520-19-0x000007FEF5C70000-0x000007FEF665C000-memory.dmpFilesize
9.9MB