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Analysis
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max time kernel
119s -
max time network
120s -
platform
windows7_x64 -
resource
win7-20240705-en -
resource tags
arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system -
submitted
22/07/2024, 01:36
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
3fb22cfc3e2c18514a65cb7ba37b2210N.exe
Resource
win7-20240705-en
windows7-x64
11 signatures
120 seconds
Behavioral task
behavioral2
Sample
3fb22cfc3e2c18514a65cb7ba37b2210N.exe
Resource
win10v2004-20240709-en
windows10-2004-x64
10 signatures
120 seconds
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
Score
10/10
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 Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5250584F-4351-5246-5250-584F43515246}\StubPath = "C:\\Windows\\system32\\ufxirub.exe" ufvebef.exe Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5250584F-4351-5246-5250-584F43515246} ufvebef.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5250584F-4351-5246-5250-584F43515246}\01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123 = "a" ufvebef.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5250584F-4351-5246-5250-584F43515246}\IsInstalled = "1" ufvebef.exe -
Event Triggered Execution: Image File Execution Options Injection 1 TTPs 3 IoCs
description ioc Process 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 Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe ufvebef.exe -
Executes dropped EXE 2 IoCs
pid Process 2244 ufvebef.exe 2108 ufvebef.exe -
Loads dropped DLL 3 IoCs
pid Process 1700 3fb22cfc3e2c18514a65cb7ba37b2210N.exe 1700 3fb22cfc3e2c18514a65cb7ba37b2210N.exe 2244 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}\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 Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345 = "a" ufvebef.exe -
Drops file in System32 directory 9 IoCs
description ioc Process 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\ofposin-obooc.exe ufvebef.exe File opened for modification C:\Windows\SysWOW64\evropik.dll ufvebef.exe File created C:\Windows\SysWOW64\ufxirub.exe ufvebef.exe File created C:\Windows\SysWOW64\ufvebef.exe 3fb22cfc3e2c18514a65cb7ba37b2210N.exe File opened for modification C:\Windows\SysWOW64\ofposin-obooc.exe ufvebef.exe File opened for modification C:\Windows\SysWOW64\ufxirub.exe ufvebef.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2108 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe 2244 ufvebef.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 1700 3fb22cfc3e2c18514a65cb7ba37b2210N.exe Token: SeDebugPrivilege 2244 ufvebef.exe -
Suspicious use of WriteProcessMemory 64 IoCs
description pid Process procid_target PID 1700 wrote to memory of 2244 1700 3fb22cfc3e2c18514a65cb7ba37b2210N.exe 31 PID 1700 wrote to memory of 2244 1700 3fb22cfc3e2c18514a65cb7ba37b2210N.exe 31 PID 1700 wrote to memory of 2244 1700 3fb22cfc3e2c18514a65cb7ba37b2210N.exe 31 PID 1700 wrote to memory of 2244 1700 3fb22cfc3e2c18514a65cb7ba37b2210N.exe 31 PID 2244 wrote to memory of 432 2244 ufvebef.exe 5 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 2108 2244 ufvebef.exe 32 PID 2244 wrote to memory of 2108 2244 ufvebef.exe 32 PID 2244 wrote to memory of 2108 2244 ufvebef.exe 32 PID 2244 wrote to memory of 2108 2244 ufvebef.exe 32 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21 PID 2244 wrote to memory of 1200 2244 ufvebef.exe 21
Processes
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C:\Windows\system32\winlogon.exewinlogon.exe1⤵PID:432
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵PID:1200
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C:\Users\Admin\AppData\Local\Temp\3fb22cfc3e2c18514a65cb7ba37b2210N.exe"C:\Users\Admin\AppData\Local\Temp\3fb22cfc3e2c18514a65cb7ba37b2210N.exe"2⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1700 -
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
- Loads dropped DLL
- Windows security modification
- Modifies WinLogon
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2244 -
C:\Windows\SysWOW64\ufvebef.exe--k33p4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:2108
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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
MD590c97dc4328baa0c3d37885fc82850c4
SHA1b0e5cc6a8dae9f3df6f85d7c1de65cb483c283db
SHA256d97ccf61067e3b2905d612e532fb910e80d6f6ad093382a8387dfda092b89257
SHA512e6b53e06dd967f9d6f276893d5fd60274ab4c887f7b5efeb5792b88b5bf3e713861cbe10c8e865589f0363f1f2ffc57dcd7e52a9fa5d27c45fa41d1d2a8b2ea7
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Filesize
70KB
MD5034a0ea0105b155bd2fb1bbe7146f986
SHA1a68d21184a0b67056501b328fd542306cd330d20
SHA2569965bbc6f23d2ba15975f609bb4145bf701a7067b54c4528dde23e7dd870920f
SHA5128061c9ef64e9ca86c696f16c9a4a80ce56999a3b2b247dd0e26eebd53c627d1650f7eef5f4516e0d9b166d6a25eeeede473e565386b6956b88241b176aa68377
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Filesize
68KB
MD53fb22cfc3e2c18514a65cb7ba37b2210
SHA1618e00e1eeff13fca25dadc7fe64f6fa7c1cc114
SHA256794803db33e0aad8a5e3f76842f7c929ef630a2ef49c7111e5102e6f0837abc0
SHA512fb74c5d8301ec2729b72c1d4b5dabb36aedff6fa9e95f265c57edcc18c501850570c56f04f517e374e1646b1ce3ce3676c82a0865417b817436b5b1b819ee560