Analysis
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max time kernel
150s -
max time network
148s -
platform
windows11-21h2_x64 -
resource
win11-20240419-en -
resource tags
arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system -
submitted
17-05-2024 23:17
Static task
static1
Behavioral task
behavioral1
Sample
9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe
Resource
win10v2004-20240426-en
General
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Target
9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe
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Size
4.1MB
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MD5
c7bfcedf9f89a2aa25f8eae1657cd1e0
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SHA1
30a8c60879519e687ea7149fed290559bad6ff46
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SHA256
9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05
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SHA512
301c3b86d4c36b7f86d7f701bd89054b408e1ad44f3e2113c5865d5af3aaa0736284012fb6f8a7eb654641e21a5623a08522975d4520fa91293105564bb93887
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SSDEEP
98304:cmJz+EAFuKpzA6GjnwtAd4VH0G8BBOAZM6KCBe84B:Jh+Eouw86GbIivMwMVCB8B
Malware Config
Signatures
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Glupteba payload 18 IoCs
resource yara_rule behavioral2/memory/4900-2-0x0000000004D20000-0x000000000560B000-memory.dmp family_glupteba behavioral2/memory/4900-3-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/4900-73-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/4900-78-0x0000000004D20000-0x000000000560B000-memory.dmp family_glupteba behavioral2/memory/2940-124-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/4900-126-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/3680-195-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/3680-212-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/3680-214-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/3680-217-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/3680-219-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/3680-222-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/3680-227-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/3680-229-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/3680-231-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/3680-234-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/3680-239-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/3680-241-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba -
Modifies Windows Firewall 2 TTPs 1 IoCs
pid Process 4500 netsh.exe -
Executes dropped EXE 4 IoCs
pid Process 3680 csrss.exe 1412 injector.exe 1708 windefender.exe 1768 windefender.exe -
resource yara_rule behavioral2/files/0x001a00000002ab48-204.dat upx behavioral2/memory/1708-205-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/1768-208-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/1708-210-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/1768-215-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/1768-220-0x0000000000400000-0x00000000008DF000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1474490143-3221292397-4168103503-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe Set value (str) \REGISTRY\USER\S-1-5-21-1474490143-3221292397-4168103503-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" csrss.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Manipulates WinMonFS driver. 1 IoCs
Roottkits write to WinMonFS to hide directories/files from being detected.
description ioc Process File opened for modification \??\WinMonFS csrss.exe -
Drops file in System32 directory 7 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File created C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File created C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe -
Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs
Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.
description ioc Process File opened (read-only) \??\VBoxMiniRdrDN 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe -
Drops file in Windows directory 4 IoCs
description ioc Process File created C:\Windows\windefender.exe csrss.exe File opened for modification C:\Windows\windefender.exe csrss.exe File opened for modification C:\Windows\rss 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe File created C:\Windows\rss\csrss.exe 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe -
Launches sc.exe 1 IoCs
Sc.exe is a Windows utlilty to control services on the system.
pid Process 3816 sc.exe -
pid Process 3044 powershell.exe 3284 powershell.exe 3988 powershell.exe 3444 powershell.exe 2312 powershell.exe 2612 powershell.exe 2444 powershell.exe -
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 3840 schtasks.exe 2260 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
description ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-272 = "Greenwich Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2612 = "Bougainville Standard Time" 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-962 = "Paraguay Standard Time" 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs powershell.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-435 = "Georgian Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-131 = "US Eastern Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1862 = "Russia TZ 6 Standard Time" 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2751 = "Tomsk Daylight Time" 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs powershell.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-449 = "Azerbaijan Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2142 = "Transbaikal Standard Time" 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-42 = "E. South America Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-692 = "Tasmania Standard Time" windefender.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-772 = "Montevideo Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-11 = "Azores Daylight Time" 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-32 = "Mid-Atlantic Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1932 = "Russia TZ 11 Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-11 = "Azores Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-571 = "China Daylight Time" windefender.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-292 = "Central European Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-632 = "Tokyo Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2872 = "Magallanes Standard Time" 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-211 = "Pacific Daylight Time" 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-82 = "Atlantic Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-171 = "Central Daylight Time (Mexico)" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1801 = "Line Islands Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1472 = "Magadan Standard Time" 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-91 = "Pacific SA Daylight Time" 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-842 = "Argentina Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1872 = "Russia TZ 7 Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2531 = "Chatham Islands Daylight Time" 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-502 = "Nepal Standard Time" 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-792 = "SA Western Standard Time" 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-3141 = "South Sudan Daylight Time" 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1931 = "Russia TZ 11 Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1662 = "Bahia Standard Time" 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-435 = "Georgian Standard Time" 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot powershell.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-301 = "Romance Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1831 = "Russia TZ 2 Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-792 = "SA Western Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-571 = "China Daylight Time" 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs powershell.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 3444 powershell.exe 3444 powershell.exe 4900 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe 4900 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe 2312 powershell.exe 2312 powershell.exe 2940 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe 2940 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe 2940 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe 2940 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe 2940 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe 2940 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe 2940 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe 2940 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe 2940 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe 2940 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe 2612 powershell.exe 2612 powershell.exe 2444 powershell.exe 2444 powershell.exe 3044 powershell.exe 3044 powershell.exe 3284 powershell.exe 3284 powershell.exe 3988 powershell.exe 3988 powershell.exe 1412 injector.exe 1412 injector.exe 1412 injector.exe 1412 injector.exe 1412 injector.exe 1412 injector.exe 3680 csrss.exe 3680 csrss.exe 1412 injector.exe 1412 injector.exe 1412 injector.exe 1412 injector.exe 1412 injector.exe 1412 injector.exe 3680 csrss.exe 3680 csrss.exe 1412 injector.exe 1412 injector.exe 3680 csrss.exe 3680 csrss.exe 1412 injector.exe 1412 injector.exe 1412 injector.exe 1412 injector.exe 1412 injector.exe 1412 injector.exe 1412 injector.exe 1412 injector.exe 1412 injector.exe 1412 injector.exe 1412 injector.exe 1412 injector.exe 1412 injector.exe 1412 injector.exe 1412 injector.exe 1412 injector.exe 1412 injector.exe 1412 injector.exe -
Suspicious use of AdjustPrivilegeToken 12 IoCs
description pid Process Token: SeDebugPrivilege 3444 powershell.exe Token: SeDebugPrivilege 4900 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe Token: SeImpersonatePrivilege 4900 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe Token: SeDebugPrivilege 2312 powershell.exe Token: SeDebugPrivilege 2612 powershell.exe Token: SeDebugPrivilege 2444 powershell.exe Token: SeDebugPrivilege 3044 powershell.exe Token: SeDebugPrivilege 3284 powershell.exe Token: SeDebugPrivilege 3988 powershell.exe Token: SeSystemEnvironmentPrivilege 3680 csrss.exe Token: SeSecurityPrivilege 3816 sc.exe Token: SeSecurityPrivilege 3816 sc.exe -
Suspicious use of WriteProcessMemory 36 IoCs
description pid Process procid_target PID 4900 wrote to memory of 3444 4900 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe 81 PID 4900 wrote to memory of 3444 4900 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe 81 PID 4900 wrote to memory of 3444 4900 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe 81 PID 2940 wrote to memory of 2312 2940 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe 86 PID 2940 wrote to memory of 2312 2940 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe 86 PID 2940 wrote to memory of 2312 2940 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe 86 PID 2940 wrote to memory of 2652 2940 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe 88 PID 2940 wrote to memory of 2652 2940 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe 88 PID 2652 wrote to memory of 4500 2652 cmd.exe 90 PID 2652 wrote to memory of 4500 2652 cmd.exe 90 PID 2940 wrote to memory of 2612 2940 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe 91 PID 2940 wrote to memory of 2612 2940 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe 91 PID 2940 wrote to memory of 2612 2940 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe 91 PID 2940 wrote to memory of 2444 2940 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe 93 PID 2940 wrote to memory of 2444 2940 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe 93 PID 2940 wrote to memory of 2444 2940 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe 93 PID 2940 wrote to memory of 3680 2940 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe 95 PID 2940 wrote to memory of 3680 2940 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe 95 PID 2940 wrote to memory of 3680 2940 9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe 95 PID 3680 wrote to memory of 3044 3680 csrss.exe 96 PID 3680 wrote to memory of 3044 3680 csrss.exe 96 PID 3680 wrote to memory of 3044 3680 csrss.exe 96 PID 3680 wrote to memory of 3284 3680 csrss.exe 102 PID 3680 wrote to memory of 3284 3680 csrss.exe 102 PID 3680 wrote to memory of 3284 3680 csrss.exe 102 PID 3680 wrote to memory of 3988 3680 csrss.exe 104 PID 3680 wrote to memory of 3988 3680 csrss.exe 104 PID 3680 wrote to memory of 3988 3680 csrss.exe 104 PID 3680 wrote to memory of 1412 3680 csrss.exe 106 PID 3680 wrote to memory of 1412 3680 csrss.exe 106 PID 1708 wrote to memory of 2812 1708 windefender.exe 112 PID 1708 wrote to memory of 2812 1708 windefender.exe 112 PID 1708 wrote to memory of 2812 1708 windefender.exe 112 PID 2812 wrote to memory of 3816 2812 cmd.exe 113 PID 2812 wrote to memory of 3816 2812 cmd.exe 113 PID 2812 wrote to memory of 3816 2812 cmd.exe 113 -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Users\Admin\AppData\Local\Temp\9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe"C:\Users\Admin\AppData\Local\Temp\9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4900 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3444
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C:\Users\Admin\AppData\Local\Temp\9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe"C:\Users\Admin\AppData\Local\Temp\9f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05.exe"2⤵
- Adds Run key to start application
- Checks for VirtualBox DLLs, possible anti-VM trick
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2940 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile3⤵
- Drops file in System32 directory
- Command and Scripting Interpreter: PowerShell
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2312
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C:\Windows\system32\cmd.exeC:\Windows\Sysnative\cmd.exe /C "netsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes"3⤵
- Suspicious use of WriteProcessMemory
PID:2652 -
C:\Windows\system32\netsh.exenetsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes4⤵
- Modifies Windows Firewall
PID:4500
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile3⤵
- Drops file in System32 directory
- Command and Scripting Interpreter: PowerShell
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2612
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile3⤵
- Drops file in System32 directory
- Command and Scripting Interpreter: PowerShell
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2444
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C:\Windows\rss\csrss.exeC:\Windows\rss\csrss.exe3⤵
- Executes dropped EXE
- Adds Run key to start application
- Manipulates WinMonFS driver.
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3680 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile4⤵
- Drops file in System32 directory
- Command and Scripting Interpreter: PowerShell
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3044
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C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F4⤵
- Creates scheduled task(s)
PID:3840
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵PID:1092
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile4⤵
- Drops file in System32 directory
- Command and Scripting Interpreter: PowerShell
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3284
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile4⤵
- Drops file in System32 directory
- Command and Scripting Interpreter: PowerShell
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3988
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C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exeC:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe taskmgr.exe C:\Users\Admin\AppData\Local\Temp\csrss\injector\NtQuerySystemInformationHook.dll4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:1412
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C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F4⤵
- Creates scheduled task(s)
PID:2260
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C:\Windows\windefender.exe"C:\Windows\windefender.exe"4⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:1708 -
C:\Windows\SysWOW64\cmd.execmd.exe /C sc sdset WinDefender D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPLOCRSDRCWDWO;;;BA)(D;;WPDT;;;BA)(A;;CCLCSWLOCRRC;;;IU)(A;;CCLCSWLOCRRC;;;SU)S:(AU;FA;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;WD)5⤵
- Suspicious use of WriteProcessMemory
PID:2812 -
C:\Windows\SysWOW64\sc.exesc sdset WinDefender D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPLOCRSDRCWDWO;;;BA)(D;;WPDT;;;BA)(A;;CCLCSWLOCRRC;;;IU)(A;;CCLCSWLOCRRC;;;SU)S:(AU;FA;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;WD)6⤵
- Launches sc.exe
- Suspicious use of AdjustPrivilegeToken
PID:3816
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C:\Windows\windefender.exeC:\Windows\windefender.exe1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:1768
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Scheduled Task/Job
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Scheduled Task/Job
1Replay Monitor
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Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
281KB
MD5d98e33b66343e7c96158444127a117f6
SHA1bb716c5509a2bf345c6c1152f6e3e1452d39d50d
SHA2565de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1
SHA512705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
Filesize2KB
MD5d0c46cad6c0778401e21910bd6b56b70
SHA17be418951ea96326aca445b8dfe449b2bfa0dca6
SHA2569600b3fdf0565ccb49e21656aa4b24d7c18f776bfd04d9ee984b134707550f02
SHA512057531b468f7fbbb2175a696a8aab274dec0d17d9f71df309edcff35e064f3378050066a3df47ccd03048fac461594ec75e3d4fe64f9dd79949d129f51e02949
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD530875d841bb8b85d8ae3ea976d2b723b
SHA11ad7b385460c1e91df263ebee20a109f26f94a74
SHA2560dd1e2325121d49de5f832f7c88b37c1d734bf2be6183790b7fa6caae9547b09
SHA512c4b39e9c0bf97a31a7c1bcf93862baf70d136094f2eb6331f2ba45e94ab6cbccf336a75c5398673d5f8aca888c8d4b1926c512ee12dd65f56a3faf2f941638f5
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5da62c7288a2183b83406c8a53654f02d
SHA1c5cc10415eaef4a69e88fadbc092de2e609e6ffd
SHA256f44202e6838e473a17ff6a44ee957c28665a1a793fc11662f65e42caeb164a3a
SHA512f38a1c6816f27bd12e8a5fdaef4209c83a6f1d52168675af3f63d5eddb5bb8e93bab5d9ad1c7d32777ac477c3ba457733a2f4b964c86fc44e8b783b6bc76db85
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5145ab88ca526a2af0e5560141dade8ad
SHA19c06f9233b147d0d28eef1a27c5c345b3c21532f
SHA25605bd4b80ad97c52854ead9904483536f4a461bf68b3404529892415dedb210f2
SHA51251318582e46df980c458b11510a478a34690c9f35b0b0c2b28525dcd9dd807dd1aabb38f53fda95131481dbdb6c745282eda7e37a930b4aba3cfa7a193f8aac5
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5b6fc103136a96b52ded9a38bc86535a0
SHA19ef0ab280f89d4c8e5024467f1bc9cded9e75a50
SHA256ae8eca8eeb984208f55e1dcbf4c4b9968a8471be4491d37a1c111abb14bd5eb6
SHA51200b50b4c8b4d2e8b5a5b50bb1d8473b3b797fe9d07a75a18e2f2ed6baba81250fb12004231bcb9103f4d1cecb95d0b57f6bc1834f250d21a12b5db4cc9ccf144
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5730c5d549a91611a829e1c74ca1aa037
SHA1127ac68d96ce4eb9ccd73eeaa6125ea2375e1629
SHA2560c1f31b31375a5ab5fb4601fb094909b4f84d7d6c160977fc949bf1ddb81b148
SHA512cb500e726c9c69111b0ef425fed2743debde1427d982ada50004b00942414b96985ce71852755b52f9f269045c14db02373f28c875cc7a25eb42ef0b277fc994
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Filesize
4.1MB
MD5c7bfcedf9f89a2aa25f8eae1657cd1e0
SHA130a8c60879519e687ea7149fed290559bad6ff46
SHA2569f9500796b24685fb14d1697e6e2523b1e542778aab15e571f667f850dcb6b05
SHA512301c3b86d4c36b7f86d7f701bd89054b408e1ad44f3e2113c5865d5af3aaa0736284012fb6f8a7eb654641e21a5623a08522975d4520fa91293105564bb93887
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Filesize
2.0MB
MD58e67f58837092385dcf01e8a2b4f5783
SHA1012c49cfd8c5d06795a6f67ea2baf2a082cf8625
SHA256166ddb03ff3c89bd4525ac390067e180fdd08f10fbcf4aadb0189541673c03fa
SHA51240d8ae12663fc1851e171d9d86cea8bb12487b734c218d7b6f9742eb07d4ca265065cbd6d0bb908f8bda7e3d955c458dfe3fd13265bbf573b9351e0a2bf691ec