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Analysis
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max time kernel
119s -
max time network
120s -
platform
windows10-2004_x64 -
resource
win10v2004-20240709-en -
resource tags
arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system -
submitted
22/07/2024, 01:36
Static task
static1
Behavioral task
behavioral1
Sample
3fb22cfc3e2c18514a65cb7ba37b2210N.exe
Resource
win7-20240705-en
Behavioral task
behavioral2
Sample
3fb22cfc3e2c18514a65cb7ba37b2210N.exe
Resource
win10v2004-20240709-en
General
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Target
3fb22cfc3e2c18514a65cb7ba37b2210N.exe
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Size
68KB
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MD5
3fb22cfc3e2c18514a65cb7ba37b2210
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SHA1
618e00e1eeff13fca25dadc7fe64f6fa7c1cc114
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SHA256
794803db33e0aad8a5e3f76842f7c929ef630a2ef49c7111e5102e6f0837abc0
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SHA512
fb74c5d8301ec2729b72c1d4b5dabb36aedff6fa9e95f265c57edcc18c501850570c56f04f517e374e1646b1ce3ce3676c82a0865417b817436b5b1b819ee560
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SSDEEP
1536:1teqKDlXvCDB04f5Gn/L8FlADNt3d1Hw8q:Olg35GTslA5t3/w8q
Malware Config
Signatures
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description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "25600" ufvebef.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "25600" ufvebef.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "25600" ufvebef.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "25600" ufvebef.exe -
Boot or Logon Autostart Execution: Active Setup 2 TTPs 4 IoCs
Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5950494D-4649-594c-5950-494D4649594c} ufvebef.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5950494D-4649-594c-5950-494D4649594c}\01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123 = "a" ufvebef.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5950494D-4649-594c-5950-494D4649594c}\IsInstalled = "1" ufvebef.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5950494D-4649-594c-5950-494D4649594c}\StubPath = "C:\\Windows\\system32\\ufxirub.exe" ufvebef.exe -
Event Triggered Execution: Image File Execution Options Injection 1 TTPs 3 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe ufvebef.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890 = "a" ufvebef.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\Debugger = "C:\\Windows\\system32\\ofposin-obooc.exe" ufvebef.exe -
Executes dropped EXE 2 IoCs
pid Process 1828 ufvebef.exe 2908 ufvebef.exe -
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "25600" ufvebef.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "25600" ufvebef.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "25600" ufvebef.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "25600" ufvebef.exe -
Modifies WinLogon 2 TTPs 5 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345 = "a" ufvebef.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\DLLName = "C:\\Windows\\system32\\evropik.dll" ufvebef.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\Startup = "Startup" ufvebef.exe Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B} ufvebef.exe Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify ufvebef.exe -
Drops file in System32 directory 9 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\evropik.dll ufvebef.exe File created C:\Windows\SysWOW64\evropik.dll ufvebef.exe File opened for modification C:\Windows\SysWOW64\ufvebef.exe ufvebef.exe File opened for modification C:\Windows\SysWOW64\ufvebef.exe 3fb22cfc3e2c18514a65cb7ba37b2210N.exe File created C:\Windows\SysWOW64\ufvebef.exe 3fb22cfc3e2c18514a65cb7ba37b2210N.exe File created C:\Windows\SysWOW64\ofposin-obooc.exe ufvebef.exe File opened for modification C:\Windows\SysWOW64\ofposin-obooc.exe ufvebef.exe File opened for modification C:\Windows\SysWOW64\ufxirub.exe ufvebef.exe File created C:\Windows\SysWOW64\ufxirub.exe ufvebef.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 2908 ufvebef.exe 2908 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe 1828 ufvebef.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 4556 3fb22cfc3e2c18514a65cb7ba37b2210N.exe Token: SeDebugPrivilege 1828 ufvebef.exe -
Suspicious use of WriteProcessMemory 64 IoCs
description pid Process procid_target PID 4556 wrote to memory of 1828 4556 3fb22cfc3e2c18514a65cb7ba37b2210N.exe 84 PID 4556 wrote to memory of 1828 4556 3fb22cfc3e2c18514a65cb7ba37b2210N.exe 84 PID 4556 wrote to memory of 1828 4556 3fb22cfc3e2c18514a65cb7ba37b2210N.exe 84 PID 1828 wrote to memory of 608 1828 ufvebef.exe 5 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 2908 1828 ufvebef.exe 85 PID 1828 wrote to memory of 2908 1828 ufvebef.exe 85 PID 1828 wrote to memory of 2908 1828 ufvebef.exe 85 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56 PID 1828 wrote to memory of 3444 1828 ufvebef.exe 56
Processes
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C:\Windows\system32\winlogon.exewinlogon.exe1⤵PID:608
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵PID:3444
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C:\Users\Admin\AppData\Local\Temp\3fb22cfc3e2c18514a65cb7ba37b2210N.exe"C:\Users\Admin\AppData\Local\Temp\3fb22cfc3e2c18514a65cb7ba37b2210N.exe"2⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4556 -
C:\Windows\SysWOW64\ufvebef.exe"C:\Windows\system32\ufvebef.exe"3⤵
- Windows security bypass
- Boot or Logon Autostart Execution: Active Setup
- Event Triggered Execution: Image File Execution Options Injection
- Executes dropped EXE
- Windows security modification
- Modifies WinLogon
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1828 -
C:\Windows\SysWOW64\ufvebef.exe--k33p4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:2908
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Active Setup
1Winlogon Helper DLL
1Event Triggered Execution
1Image File Execution Options Injection
1Replay Monitor
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Downloads
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Filesize
5KB
MD5f37b21c00fd81bd93c89ce741a88f183
SHA1b2796500597c68e2f5638e1101b46eaf32676c1c
SHA25676cf016fd77cb5a06c6ed4674ddc2345e8390c010cf344491a6e742baf2c0fb0
SHA512252fe66dea9a4b9aebc5fd2f24434719cb25159ba51549d9de407f44b6a2f7bce6e071be02c4f2ad6aef588c77f12c00ed415eb54f96dec1b077326e101ce0f4
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Filesize
71KB
MD532d61c5e803f787339527cb0b0a244d0
SHA1e2464b77d0e7a51135813f327f97b1c63b296399
SHA256564521f789cc2a525c9abf823cc5ba503bb884740ebd36dd667f41af9c24a6ce
SHA512071c0d570b1d2ecb6fc82bd75963ee56bcd38834adf3dc516de8805f629d814cb0a7845677c825c457539bcd4f89875cd86a1c6c4987a339f21f35b39bc9d3a4
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Filesize
68KB
MD53fb22cfc3e2c18514a65cb7ba37b2210
SHA1618e00e1eeff13fca25dadc7fe64f6fa7c1cc114
SHA256794803db33e0aad8a5e3f76842f7c929ef630a2ef49c7111e5102e6f0837abc0
SHA512fb74c5d8301ec2729b72c1d4b5dabb36aedff6fa9e95f265c57edcc18c501850570c56f04f517e374e1646b1ce3ce3676c82a0865417b817436b5b1b819ee560
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Filesize
70KB
MD55c58e4688fec7f006610955c45537f6c
SHA1aaa0d574bdd085e49bf416012fa44459c704d65c
SHA256d6593fb48c288d6820f3adc8f92403bc29a700d88aee2b14d603fd03a59060e6
SHA5126ab97e97a0c45bfbbe28d36db18b68b1d0b61cc5dc5c4c371444f2ebb0df7c04b4c92cc100ebc50e521d49312b0002c8f5f1283e977a94ab8a08a6f85b4e3203