Analysis
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max time kernel
150s -
max time network
44s -
platform
windows7_x64 -
resource
win7-en-20210920 -
submitted
23-09-2021 07:12
Static task
static1
Behavioral task
behavioral1
Sample
a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe
Resource
win7-en-20210920
General
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Target
a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe
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Size
520KB
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MD5
452b72638cf014d97a9b5a219e4685f9
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SHA1
df7b8e92163dfe5bcfd1f1f8ea832d5c655d457c
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SHA256
a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf
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SHA512
a30e2cb3bbe1138bf148dcca0187c366f60b064115820b5848f2f177aafbfd97cc3ed2d301ff3dd53001e46337b97595f7df6a014aa3c3ebc69628f22d03623f
Malware Config
Signatures
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Executes dropped EXE 3 IoCs
Processes:
winupd.exewinupd.exewinupd.exepid process 756 winupd.exe 1328 winupd.exe 1696 winupd.exe -
Processes:
resource yara_rule behavioral1/memory/1696-73-0x0000000000400000-0x00000000004B7000-memory.dmp upx behavioral1/memory/1696-83-0x0000000000400000-0x00000000004B7000-memory.dmp upx -
Loads dropped DLL 2 IoCs
Processes:
a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exepid process 856 a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe 856 a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
reg.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows\CurrentVersion\Run reg.exe Set value (str) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows\CurrentVersion\Run\WinUpdate = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\winupd.exe -notray" reg.exe -
Suspicious use of SetThreadContext 3 IoCs
Processes:
a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exewinupd.exedescription pid process target process PID 1432 set thread context of 856 1432 a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe PID 756 set thread context of 1328 756 winupd.exe winupd.exe PID 756 set thread context of 1696 756 winupd.exe winupd.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Gathers network information 2 TTPs 1 IoCs
Uses commandline utility to view network configuration.
Processes:
ipconfig.exepid process 1364 ipconfig.exe -
Modifies registry key 1 TTPs 1 IoCs
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Suspicious use of AdjustPrivilegeToken 23 IoCs
Processes:
winupd.exedescription pid process Token: SeIncreaseQuotaPrivilege 1696 winupd.exe Token: SeSecurityPrivilege 1696 winupd.exe Token: SeTakeOwnershipPrivilege 1696 winupd.exe Token: SeLoadDriverPrivilege 1696 winupd.exe Token: SeSystemProfilePrivilege 1696 winupd.exe Token: SeSystemtimePrivilege 1696 winupd.exe Token: SeProfSingleProcessPrivilege 1696 winupd.exe Token: SeIncBasePriorityPrivilege 1696 winupd.exe Token: SeCreatePagefilePrivilege 1696 winupd.exe Token: SeBackupPrivilege 1696 winupd.exe Token: SeRestorePrivilege 1696 winupd.exe Token: SeShutdownPrivilege 1696 winupd.exe Token: SeDebugPrivilege 1696 winupd.exe Token: SeSystemEnvironmentPrivilege 1696 winupd.exe Token: SeChangeNotifyPrivilege 1696 winupd.exe Token: SeRemoteShutdownPrivilege 1696 winupd.exe Token: SeUndockPrivilege 1696 winupd.exe Token: SeManageVolumePrivilege 1696 winupd.exe Token: SeImpersonatePrivilege 1696 winupd.exe Token: SeCreateGlobalPrivilege 1696 winupd.exe Token: 33 1696 winupd.exe Token: 34 1696 winupd.exe Token: 35 1696 winupd.exe -
Suspicious use of SetWindowsHookEx 5 IoCs
Processes:
a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exea7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exewinupd.exewinupd.exewinupd.exepid process 1432 a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe 856 a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe 756 winupd.exe 1328 winupd.exe 1696 winupd.exe -
Suspicious use of WriteProcessMemory 44 IoCs
Processes:
a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exea7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exewinupd.exewinupd.exeipconfig.execmd.exedescription pid process target process PID 1432 wrote to memory of 856 1432 a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe PID 1432 wrote to memory of 856 1432 a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe PID 1432 wrote to memory of 856 1432 a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe PID 1432 wrote to memory of 856 1432 a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe PID 1432 wrote to memory of 856 1432 a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe PID 1432 wrote to memory of 856 1432 a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe PID 1432 wrote to memory of 856 1432 a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe PID 1432 wrote to memory of 856 1432 a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe PID 1432 wrote to memory of 856 1432 a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe PID 856 wrote to memory of 756 856 a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe winupd.exe PID 856 wrote to memory of 756 856 a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe winupd.exe PID 856 wrote to memory of 756 856 a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe winupd.exe PID 856 wrote to memory of 756 856 a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe winupd.exe PID 756 wrote to memory of 1328 756 winupd.exe winupd.exe PID 756 wrote to memory of 1328 756 winupd.exe winupd.exe PID 756 wrote to memory of 1328 756 winupd.exe winupd.exe PID 756 wrote to memory of 1328 756 winupd.exe winupd.exe PID 756 wrote to memory of 1328 756 winupd.exe winupd.exe PID 756 wrote to memory of 1328 756 winupd.exe winupd.exe PID 756 wrote to memory of 1328 756 winupd.exe winupd.exe PID 756 wrote to memory of 1328 756 winupd.exe winupd.exe PID 756 wrote to memory of 1328 756 winupd.exe winupd.exe PID 756 wrote to memory of 1696 756 winupd.exe winupd.exe PID 756 wrote to memory of 1696 756 winupd.exe winupd.exe PID 756 wrote to memory of 1696 756 winupd.exe winupd.exe PID 756 wrote to memory of 1696 756 winupd.exe winupd.exe PID 756 wrote to memory of 1696 756 winupd.exe winupd.exe PID 756 wrote to memory of 1696 756 winupd.exe winupd.exe PID 756 wrote to memory of 1696 756 winupd.exe winupd.exe PID 756 wrote to memory of 1696 756 winupd.exe winupd.exe PID 1328 wrote to memory of 1364 1328 winupd.exe ipconfig.exe PID 1328 wrote to memory of 1364 1328 winupd.exe ipconfig.exe PID 1328 wrote to memory of 1364 1328 winupd.exe ipconfig.exe PID 1328 wrote to memory of 1364 1328 winupd.exe ipconfig.exe PID 1328 wrote to memory of 1364 1328 winupd.exe ipconfig.exe PID 1328 wrote to memory of 1364 1328 winupd.exe ipconfig.exe PID 1364 wrote to memory of 1068 1364 ipconfig.exe cmd.exe PID 1364 wrote to memory of 1068 1364 ipconfig.exe cmd.exe PID 1364 wrote to memory of 1068 1364 ipconfig.exe cmd.exe PID 1364 wrote to memory of 1068 1364 ipconfig.exe cmd.exe PID 1068 wrote to memory of 1820 1068 cmd.exe reg.exe PID 1068 wrote to memory of 1820 1068 cmd.exe reg.exe PID 1068 wrote to memory of 1820 1068 cmd.exe reg.exe PID 1068 wrote to memory of 1820 1068 cmd.exe reg.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe"C:\Users\Admin\AppData\Local\Temp\a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe"C:\Users\Admin\AppData\Local\Temp\a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe"2⤵
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exeC:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe -notray3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe"C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe"4⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\ipconfig.exe"C:\Windows\system32\ipconfig.exe"5⤵
- Gathers network information
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.execmd /c ""C:\Users\Admin\AppData\Local\Temp\TMLTHGID.bat" "6⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\reg.exeREG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v WinUpdate /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe -notray" /f7⤵
- Adds Run key to start application
- Modifies registry key
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C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe"C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe"4⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\TMLTHGID.batMD5
cac890d00365d07b9ca89def17cc3a36
SHA16fa99679ede791c16b5d3e6d243a98e8bbdb7eab
SHA2564f98ddee89760080a5c8a93666d2f5c97be52b741265ef4d1ce9aaebf05f12da
SHA512124dc0b18e13425bde43bcbbe2a99005928e398bffcb458d498aac9e754bc5b92b703270667800876c60b0801343f2de8c6b9a1eebafd80bb4f6d5dc295dd9f1
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C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exeMD5
5f36e5021054bd455219fc1c0dfef822
SHA13a42f7956bab4538c22bdc241e97845ca5c8ef01
SHA25612233eb83a5852526126f7a03c4315acfef81b5897b8b3981c58ad051a7a11ab
SHA5120a88bd7ea979f4955a52edd8af45b175b329a979878f08d3b15fb82f9c8fe1a1aa8c9c7f639adc4e4769288de924f269edc02074bc9f102b8dccad06aa3c6830
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C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exeMD5
5f36e5021054bd455219fc1c0dfef822
SHA13a42f7956bab4538c22bdc241e97845ca5c8ef01
SHA25612233eb83a5852526126f7a03c4315acfef81b5897b8b3981c58ad051a7a11ab
SHA5120a88bd7ea979f4955a52edd8af45b175b329a979878f08d3b15fb82f9c8fe1a1aa8c9c7f639adc4e4769288de924f269edc02074bc9f102b8dccad06aa3c6830
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C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exeMD5
5f36e5021054bd455219fc1c0dfef822
SHA13a42f7956bab4538c22bdc241e97845ca5c8ef01
SHA25612233eb83a5852526126f7a03c4315acfef81b5897b8b3981c58ad051a7a11ab
SHA5120a88bd7ea979f4955a52edd8af45b175b329a979878f08d3b15fb82f9c8fe1a1aa8c9c7f639adc4e4769288de924f269edc02074bc9f102b8dccad06aa3c6830
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C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exeMD5
5f36e5021054bd455219fc1c0dfef822
SHA13a42f7956bab4538c22bdc241e97845ca5c8ef01
SHA25612233eb83a5852526126f7a03c4315acfef81b5897b8b3981c58ad051a7a11ab
SHA5120a88bd7ea979f4955a52edd8af45b175b329a979878f08d3b15fb82f9c8fe1a1aa8c9c7f639adc4e4769288de924f269edc02074bc9f102b8dccad06aa3c6830
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\Users\Admin\AppData\Roaming\Microsoft\winupd.exeMD5
5f36e5021054bd455219fc1c0dfef822
SHA13a42f7956bab4538c22bdc241e97845ca5c8ef01
SHA25612233eb83a5852526126f7a03c4315acfef81b5897b8b3981c58ad051a7a11ab
SHA5120a88bd7ea979f4955a52edd8af45b175b329a979878f08d3b15fb82f9c8fe1a1aa8c9c7f639adc4e4769288de924f269edc02074bc9f102b8dccad06aa3c6830
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\Users\Admin\AppData\Roaming\Microsoft\winupd.exeMD5
5f36e5021054bd455219fc1c0dfef822
SHA13a42f7956bab4538c22bdc241e97845ca5c8ef01
SHA25612233eb83a5852526126f7a03c4315acfef81b5897b8b3981c58ad051a7a11ab
SHA5120a88bd7ea979f4955a52edd8af45b175b329a979878f08d3b15fb82f9c8fe1a1aa8c9c7f639adc4e4769288de924f269edc02074bc9f102b8dccad06aa3c6830
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memory/756-62-0x0000000000000000-mapping.dmp
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memory/856-55-0x0000000000400000-0x0000000000407000-memory.dmpFilesize
28KB
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memory/856-56-0x000000000040140C-mapping.dmp
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memory/856-59-0x00000000768C1000-0x00000000768C3000-memory.dmpFilesize
8KB
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memory/1068-85-0x0000000000000000-mapping.dmp
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memory/1328-71-0x000000000040140C-mapping.dmp
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memory/1364-79-0x0000000000000000-mapping.dmp
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memory/1432-68-0x0000000002470000-0x0000000002472000-memory.dmpFilesize
8KB
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memory/1432-67-0x0000000002460000-0x0000000002462000-memory.dmpFilesize
8KB
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memory/1432-66-0x00000000003E0000-0x00000000003E2000-memory.dmpFilesize
8KB
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memory/1696-73-0x0000000000400000-0x00000000004B7000-memory.dmpFilesize
732KB
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memory/1696-74-0x00000000004B5670-mapping.dmp
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memory/1696-83-0x0000000000400000-0x00000000004B7000-memory.dmpFilesize
732KB
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memory/1696-84-0x0000000000240000-0x0000000000241000-memory.dmpFilesize
4KB
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memory/1820-86-0x0000000000000000-mapping.dmp