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Analysis
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max time kernel
150s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240419-en -
resource tags
arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system -
submitted
27/04/2024, 17:20
Static task
static1
Behavioral task
behavioral1
Sample
31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe
Resource
win10v2004-20240419-en
General
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Target
31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe
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Size
4.1MB
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MD5
0473ef4659547c66339a72d00c0655a8
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SHA1
de0801690033096c5a87bfec4315a395d8bc59bd
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SHA256
31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3
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SHA512
e0a41cd04df88918e08545d26f9214e3036e09048da6024097e5cdce40a386285d418de04ab4a40fcbd9a47ec1a06168245950000205180e09b08ee8729e8549
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SSDEEP
98304:VB+pokA3uLr67t8MVyOHX+J6fh0VTXiCNKfogoP0GUbubAei:VBc4uLrIK0u8fYNDf0GUb+Aei
Malware Config
Signatures
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Glupteba payload 16 IoCs
resource yara_rule behavioral1/memory/1116-2-0x0000000004F60000-0x000000000584B000-memory.dmp family_glupteba behavioral1/memory/1116-3-0x0000000000400000-0x0000000002ED3000-memory.dmp family_glupteba behavioral1/memory/1116-57-0x0000000000400000-0x0000000002ED3000-memory.dmp family_glupteba behavioral1/memory/1116-59-0x0000000004F60000-0x000000000584B000-memory.dmp family_glupteba behavioral1/memory/1020-86-0x0000000000400000-0x0000000002ED3000-memory.dmp family_glupteba behavioral1/memory/1020-137-0x0000000000400000-0x0000000002ED3000-memory.dmp family_glupteba behavioral1/memory/808-163-0x0000000000400000-0x0000000002ED3000-memory.dmp family_glupteba behavioral1/memory/808-166-0x0000000000400000-0x0000000002ED3000-memory.dmp family_glupteba behavioral1/memory/808-223-0x0000000000400000-0x0000000002ED3000-memory.dmp family_glupteba behavioral1/memory/808-225-0x0000000000400000-0x0000000002ED3000-memory.dmp family_glupteba behavioral1/memory/808-227-0x0000000000400000-0x0000000002ED3000-memory.dmp family_glupteba behavioral1/memory/808-229-0x0000000000400000-0x0000000002ED3000-memory.dmp family_glupteba behavioral1/memory/808-231-0x0000000000400000-0x0000000002ED3000-memory.dmp family_glupteba behavioral1/memory/808-233-0x0000000000400000-0x0000000002ED3000-memory.dmp family_glupteba behavioral1/memory/808-235-0x0000000000400000-0x0000000002ED3000-memory.dmp family_glupteba behavioral1/memory/808-237-0x0000000000400000-0x0000000002ED3000-memory.dmp family_glupteba -
Modifies Windows Firewall 2 TTPs 1 IoCs
pid Process 1512 netsh.exe -
Executes dropped EXE 2 IoCs
pid Process 808 csrss.exe 2092 injector.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe Set value (str) \REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\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 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 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 -
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 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe -
Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\rss 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe File created C:\Windows\rss\csrss.exe 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.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 4448 schtasks.exe 4972 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
description ioc Process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-332 = "E. Europe Standard Time" 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1891 = "Russia TZ 3 Daylight Time" 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople powershell.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-511 = "Central Asia Daylight Time" 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-434 = "Georgian Daylight Time" 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2871 = "Magallanes Daylight Time" 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-912 = "Mauritius Standard Time" 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-652 = "AUS Central Standard Time" 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-81 = "Atlantic Daylight Time" 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1662 = "Bahia Standard Time" 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-571 = "China Daylight Time" 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1861 = "Russia TZ 6 Daylight Time" 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-211 = "Pacific Daylight Time" 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.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\C:\Windows\system32\,@tzres.dll,-448 = "Azerbaijan Daylight Time" 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-3051 = "Qyzylorda Daylight Time" 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-111 = "Eastern Daylight Time" 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-362 = "GTB Standard Time" 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-202 = "US Mountain Standard Time" 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1472 = "Magadan Standard Time" 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-361 = "GTB Daylight Time" 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2611 = "Bougainville Daylight Time" 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-662 = "Cen. Australia Standard Time" 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-435 = "Georgian Standard Time" 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-214 = "Pacific Daylight Time (Mexico)" 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2001 = "Cabo Verde Daylight Time" 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2432 = "Cuba Standard Time" 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-721 = "Central Pacific Daylight Time" 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-432 = "Iran Standard Time" 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-121 = "SA Pacific Daylight Time" 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-131 = "US Eastern Daylight Time" 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1822 = "Russia TZ 1 Standard Time" 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-751 = "Tonga Daylight Time" 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.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\C:\Windows\system32\,@tzres.dll,-2161 = "Altai Daylight Time" 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs powershell.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\C:\Windows\system32\,@tzres.dll,-772 = "Montevideo Standard Time" 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2560 powershell.exe 2560 powershell.exe 1116 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe 1116 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe 4972 powershell.exe 4972 powershell.exe 1020 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe 1020 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe 1020 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe 1020 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe 1020 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe 1020 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe 1020 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe 1020 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe 1020 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe 1020 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe 2372 powershell.exe 2372 powershell.exe 4888 powershell.exe 4888 powershell.exe 3552 powershell.exe 3552 powershell.exe 4200 powershell.exe 4200 powershell.exe 1912 powershell.exe 1912 powershell.exe 2092 injector.exe 2092 injector.exe 2092 injector.exe 2092 injector.exe 2092 injector.exe 2092 injector.exe 808 csrss.exe 808 csrss.exe 2092 injector.exe 2092 injector.exe 2092 injector.exe 2092 injector.exe 2092 injector.exe 2092 injector.exe 808 csrss.exe 808 csrss.exe 2092 injector.exe 2092 injector.exe 2092 injector.exe 2092 injector.exe 2092 injector.exe 2092 injector.exe 2092 injector.exe 2092 injector.exe 2092 injector.exe 2092 injector.exe 2092 injector.exe 2092 injector.exe 2092 injector.exe 2092 injector.exe 2092 injector.exe 2092 injector.exe 2092 injector.exe 2092 injector.exe 2092 injector.exe 2092 injector.exe 2092 injector.exe 2092 injector.exe -
Suspicious use of AdjustPrivilegeToken 10 IoCs
description pid Process Token: SeDebugPrivilege 2560 powershell.exe Token: SeDebugPrivilege 1116 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe Token: SeImpersonatePrivilege 1116 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe Token: SeDebugPrivilege 4972 powershell.exe Token: SeDebugPrivilege 2372 powershell.exe Token: SeDebugPrivilege 4888 powershell.exe Token: SeDebugPrivilege 3552 powershell.exe Token: SeDebugPrivilege 4200 powershell.exe Token: SeDebugPrivilege 1912 powershell.exe Token: SeSystemEnvironmentPrivilege 808 csrss.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 1116 wrote to memory of 2560 1116 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe 88 PID 1116 wrote to memory of 2560 1116 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe 88 PID 1116 wrote to memory of 2560 1116 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe 88 PID 1020 wrote to memory of 4972 1020 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe 93 PID 1020 wrote to memory of 4972 1020 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe 93 PID 1020 wrote to memory of 4972 1020 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe 93 PID 1020 wrote to memory of 3096 1020 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe 95 PID 1020 wrote to memory of 3096 1020 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe 95 PID 3096 wrote to memory of 1512 3096 cmd.exe 97 PID 3096 wrote to memory of 1512 3096 cmd.exe 97 PID 1020 wrote to memory of 2372 1020 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe 99 PID 1020 wrote to memory of 2372 1020 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe 99 PID 1020 wrote to memory of 2372 1020 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe 99 PID 1020 wrote to memory of 4888 1020 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe 101 PID 1020 wrote to memory of 4888 1020 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe 101 PID 1020 wrote to memory of 4888 1020 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe 101 PID 1020 wrote to memory of 808 1020 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe 103 PID 1020 wrote to memory of 808 1020 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe 103 PID 1020 wrote to memory of 808 1020 31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe 103 PID 808 wrote to memory of 3552 808 csrss.exe 108 PID 808 wrote to memory of 3552 808 csrss.exe 108 PID 808 wrote to memory of 3552 808 csrss.exe 108 PID 808 wrote to memory of 4200 808 csrss.exe 114 PID 808 wrote to memory of 4200 808 csrss.exe 114 PID 808 wrote to memory of 4200 808 csrss.exe 114 PID 808 wrote to memory of 1912 808 csrss.exe 118 PID 808 wrote to memory of 1912 808 csrss.exe 118 PID 808 wrote to memory of 1912 808 csrss.exe 118 PID 808 wrote to memory of 2092 808 csrss.exe 120 PID 808 wrote to memory of 2092 808 csrss.exe 120 -
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\31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe"C:\Users\Admin\AppData\Local\Temp\31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1116 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2560
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C:\Users\Admin\AppData\Local\Temp\31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.exe"C:\Users\Admin\AppData\Local\Temp\31a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3.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:1020 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile3⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4972
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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:3096 -
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:1512
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile3⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2372
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile3⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4888
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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.
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:808 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile4⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3552
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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:4972
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵PID:3308
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile4⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4200
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile4⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1912
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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:2092
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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:4448
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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
MD53d086a433708053f9bf9523e1d87a4e8
SHA1b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28
SHA2566f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69
SHA512931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD580d0594d0867378465bf8787ff725199
SHA1e51f1ac3da5630f3ed74c85999e6a212b1828e89
SHA256ba64d69cc72e5a146817e1f5d6545c5e27f87bbdf7424391b0cef4f70b382aa4
SHA51249fd537ee3fce951c2322ad550a4d9809d5dd982388a94479844e51252428e258531cfbf3f981b1d277258c797216c3ee16b182b908117a3f853f5fb4d72c36d
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5d789b4fe6a60ca8e36cf5c784b3911e1
SHA1a4062d1d48078afc8605adff2a14701c92851d3c
SHA256efb3fd165e298df863122db9259ecb5068800b42088ad5a098fbf922e1c1b6c9
SHA51266f61969ca3d31b380803f2ea4ea2f9ed1b6056f7885d2f85ab5d79b0ee2f65bc0bf630e8d81e5a0054370f6fa474a533f083a827aafc5ebce16b547f284efd3
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5224b65be24c406a66a916a7c96b29c71
SHA10ef46be2ec531ca075aed3d4ed489fcc663ba28f
SHA2566030fb3878ab01d819b4077072fd88ab96a590d5a298650652ee1eb8fc874a05
SHA5129286ecd305a262a714c1e91bd30b7d7b55503255bc1c196518a22ad909c35d41357963ef30b5813bb344d5b3c96d3230a2d4e970fdca9f753db473fada0a985a
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD54ef5aa4b2dcc9c6bbc380bc081c7de37
SHA1a798505b1a1b418da604f135936fb9ce701ebd90
SHA2569f1147c6c21d91fd82e4e82c11c5ba3e0bd9394749212fe2e023db2b6169c4b4
SHA512c813e66cebb93697e02d8d02466d9a955863ef95df955fd43d0b472d0f079d1647eb4b6f701c27ea45f9bfba185ac5e1d013f45a3c688c037a1b273dc53804de
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5a8dcce565fa499180538e4cd80d183cf
SHA14cd92d05c5d44699011a572a6df1d4c1fef28cff
SHA256a5efb6baa1280c7cb27604e41466b0f8e9bc22ed2605e1f7942611056746771e
SHA5126ea33da2499ec08d4d21b0d29e6381bb7fe44982629c34359bf808244eff76740f567bb726bc840535a74eb0f89a077c8ffba38a20b5e105a16954173303f608
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Filesize
4.1MB
MD50473ef4659547c66339a72d00c0655a8
SHA1de0801690033096c5a87bfec4315a395d8bc59bd
SHA25631a25019889dd75ec99f4c5efbc753a0438279b96ef6dbdbb309018cf7926fa3
SHA512e0a41cd04df88918e08545d26f9214e3036e09048da6024097e5cdce40a386285d418de04ab4a40fcbd9a47ec1a06168245950000205180e09b08ee8729e8549