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Analysis
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max time kernel
150s -
max time network
126s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
15/05/2024, 21:43
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
4acc3d48193018b5b20605a4185d04dffd32cde84e345d1448b35b1a4caeffa6.exe
Resource
win7-20240221-en
windows7-x64
11 signatures
150 seconds
Behavioral task
behavioral2
Sample
4acc3d48193018b5b20605a4185d04dffd32cde84e345d1448b35b1a4caeffa6.exe
Resource
win10v2004-20240508-en
windows10-2004-x64
10 signatures
150 seconds
General
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Target
4acc3d48193018b5b20605a4185d04dffd32cde84e345d1448b35b1a4caeffa6.exe
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Size
71KB
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MD5
914d96adc0ac7415d135fece40d68f40
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SHA1
2c77046bf99d64bceda1c590d29d5fe2ebe64b23
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SHA256
4acc3d48193018b5b20605a4185d04dffd32cde84e345d1448b35b1a4caeffa6
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SHA512
f890b54a893a98d9c0b96e9756a816c685f01faab62e62e1e2c850edecf94a970e37cc4b8f5c4e3232cf7960ee7cccc7e027c91880fc14fb76765b1cde7a578c
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SSDEEP
1536:1teqKDlXvCDB04f5Gn/L8FlADNt3d1Hw8slgo:Olg35GTslA5t3/w8G
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" okvesav-isac.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "25600" okvesav-isac.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "25600" okvesav-isac.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "25600" okvesav-isac.exe -
Modifies Installed Components in the registry 2 TTPs 4 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{4B584950-5043-4b46-4B58-495050434b46}\IsInstalled = "1" okvesav-isac.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{4B584950-5043-4b46-4B58-495050434b46}\StubPath = "C:\\Windows\\system32\\ihmirad-edac.exe" okvesav-isac.exe Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{4B584950-5043-4b46-4B58-495050434b46} okvesav-isac.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{4B584950-5043-4b46-4B58-495050434b46}\01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123 = "a" okvesav-isac.exe -
Sets file execution options in registry 2 TTPs 3 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe okvesav-isac.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890 = "a" okvesav-isac.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\Debugger = "C:\\Windows\\system32\\xfooceat.exe" okvesav-isac.exe -
Executes dropped EXE 2 IoCs
pid Process 1880 okvesav-isac.exe 2940 okvesav-isac.exe -
Loads dropped DLL 3 IoCs
pid Process 2248 4acc3d48193018b5b20605a4185d04dffd32cde84e345d1448b35b1a4caeffa6.exe 2248 4acc3d48193018b5b20605a4185d04dffd32cde84e345d1448b35b1a4caeffa6.exe 1880 okvesav-isac.exe -
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "25600" okvesav-isac.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "25600" okvesav-isac.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "25600" okvesav-isac.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "25600" okvesav-isac.exe -
Modifies WinLogon 2 TTPs 5 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify okvesav-isac.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345 = "a" okvesav-isac.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\DLLName = "C:\\Windows\\system32\\ecbiboav-eadum.dll" okvesav-isac.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\Startup = "Startup" okvesav-isac.exe Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B} okvesav-isac.exe -
Drops file in System32 directory 9 IoCs
description ioc Process File created C:\Windows\SysWOW64\ecbiboav-eadum.dll okvesav-isac.exe File created C:\Windows\SysWOW64\xfooceat.exe okvesav-isac.exe File opened for modification C:\Windows\SysWOW64\ihmirad-edac.exe okvesav-isac.exe File opened for modification C:\Windows\SysWOW64\ecbiboav-eadum.dll okvesav-isac.exe File created C:\Windows\SysWOW64\ihmirad-edac.exe okvesav-isac.exe File opened for modification C:\Windows\SysWOW64\okvesav-isac.exe okvesav-isac.exe File opened for modification C:\Windows\SysWOW64\okvesav-isac.exe 4acc3d48193018b5b20605a4185d04dffd32cde84e345d1448b35b1a4caeffa6.exe File created C:\Windows\SysWOW64\okvesav-isac.exe 4acc3d48193018b5b20605a4185d04dffd32cde84e345d1448b35b1a4caeffa6.exe File opened for modification C:\Windows\SysWOW64\xfooceat.exe okvesav-isac.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 2940 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe 1880 okvesav-isac.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 2248 4acc3d48193018b5b20605a4185d04dffd32cde84e345d1448b35b1a4caeffa6.exe Token: SeDebugPrivilege 1880 okvesav-isac.exe -
Suspicious use of WriteProcessMemory 64 IoCs
description pid Process procid_target PID 2248 wrote to memory of 1880 2248 4acc3d48193018b5b20605a4185d04dffd32cde84e345d1448b35b1a4caeffa6.exe 28 PID 2248 wrote to memory of 1880 2248 4acc3d48193018b5b20605a4185d04dffd32cde84e345d1448b35b1a4caeffa6.exe 28 PID 2248 wrote to memory of 1880 2248 4acc3d48193018b5b20605a4185d04dffd32cde84e345d1448b35b1a4caeffa6.exe 28 PID 2248 wrote to memory of 1880 2248 4acc3d48193018b5b20605a4185d04dffd32cde84e345d1448b35b1a4caeffa6.exe 28 PID 1880 wrote to memory of 2940 1880 okvesav-isac.exe 29 PID 1880 wrote to memory of 2940 1880 okvesav-isac.exe 29 PID 1880 wrote to memory of 2940 1880 okvesav-isac.exe 29 PID 1880 wrote to memory of 2940 1880 okvesav-isac.exe 29 PID 1880 wrote to memory of 420 1880 okvesav-isac.exe 5 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21 PID 1880 wrote to memory of 1364 1880 okvesav-isac.exe 21
Processes
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C:\Windows\system32\winlogon.exewinlogon.exe1⤵PID:420
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵PID:1364
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C:\Users\Admin\AppData\Local\Temp\4acc3d48193018b5b20605a4185d04dffd32cde84e345d1448b35b1a4caeffa6.exe"C:\Users\Admin\AppData\Local\Temp\4acc3d48193018b5b20605a4185d04dffd32cde84e345d1448b35b1a4caeffa6.exe"2⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2248 -
C:\Windows\SysWOW64\okvesav-isac.exe"C:\Windows\system32\okvesav-isac.exe"3⤵
- Windows security bypass
- Modifies Installed Components in the registry
- Sets file execution options in registry
- 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:1880 -
C:\Windows\SysWOW64\okvesav-isac.exe--k33p4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:2940
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
5KB
MD5f37b21c00fd81bd93c89ce741a88f183
SHA1b2796500597c68e2f5638e1101b46eaf32676c1c
SHA25676cf016fd77cb5a06c6ed4674ddc2345e8390c010cf344491a6e742baf2c0fb0
SHA512252fe66dea9a4b9aebc5fd2f24434719cb25159ba51549d9de407f44b6a2f7bce6e071be02c4f2ad6aef588c77f12c00ed415eb54f96dec1b077326e101ce0f4
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Filesize
73KB
MD59725dbfc84caa99a0d40febfd572a397
SHA1fe1c23430767bc07cef61c42b02281353cf64816
SHA2565b6497f3260b1301b5db6553129c79e5cd7e8032d23ff62d60e48c455226f33a
SHA512c2826b527f602773e8202c17855f3480290fdf0003f37f7e8978edb91620430d4a2d0624aa83ffe1f1d4f27f4f0bfa346aede6aa848e8f46b44050a332ca9807
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Filesize
74KB
MD517380b7027a231af1054db2f4583117a
SHA13cfa3ee4de7ac4d0f10930d905194c5b7042d509
SHA256e33fae80f8024f3d07fd6b69d77e9ac2ff0a15a49332990d47b520bf87d704da
SHA512886c04744bc5732f92c9a1b0505d6990eb37ad228bbd8361daca121b9182a844630d1a4e4bf1b43bb6c11a79ecb83a7acfa7f8acc4a55d33984d8caeb7b6154d
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Filesize
71KB
MD5914d96adc0ac7415d135fece40d68f40
SHA12c77046bf99d64bceda1c590d29d5fe2ebe64b23
SHA2564acc3d48193018b5b20605a4185d04dffd32cde84e345d1448b35b1a4caeffa6
SHA512f890b54a893a98d9c0b96e9756a816c685f01faab62e62e1e2c850edecf94a970e37cc4b8f5c4e3232cf7960ee7cccc7e027c91880fc14fb76765b1cde7a578c