Analysis
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max time kernel
150s -
max time network
117s -
platform
windows10-2004_x64 -
resource
win10v2004-20240419-en -
resource tags
arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system -
submitted
30/04/2024, 17:00
Static task
static1
Behavioral task
behavioral1
Sample
635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe
Resource
win10v2004-20240419-en
General
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Target
635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe
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Size
4.1MB
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MD5
5908abf93b8fe7a85de6d65956c0fabb
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SHA1
4486a4a06efb73fb0c0c417510ab91b50856a224
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SHA256
635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b
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SHA512
e47e68c2aa57125c6e68166682f29958af4ae087d3f6e5b19b8aec9862fbe4c8d2f35de5bc4ae158b598a6512c0fcc66759688273dce10e76b373d9dddd282f0
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SSDEEP
98304:217wvEzg6BM42npM8m4ThBqMnr3mMmenI5:217wcTAM8mkhBPnr7mb
Malware Config
Signatures
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Glupteba payload 18 IoCs
resource yara_rule behavioral1/memory/940-2-0x0000000003E80000-0x000000000476B000-memory.dmp family_glupteba behavioral1/memory/940-3-0x0000000000400000-0x0000000001DF1000-memory.dmp family_glupteba behavioral1/memory/940-57-0x0000000000400000-0x0000000001DF1000-memory.dmp family_glupteba behavioral1/memory/940-58-0x0000000003E80000-0x000000000476B000-memory.dmp family_glupteba behavioral1/memory/2632-131-0x0000000000400000-0x0000000001DF1000-memory.dmp family_glupteba behavioral1/memory/2632-138-0x0000000000400000-0x0000000001DF1000-memory.dmp family_glupteba behavioral1/memory/1332-166-0x0000000000400000-0x0000000001DF1000-memory.dmp family_glupteba behavioral1/memory/1332-216-0x0000000000400000-0x0000000001DF1000-memory.dmp family_glupteba behavioral1/memory/1332-222-0x0000000000400000-0x0000000001DF1000-memory.dmp family_glupteba behavioral1/memory/1332-223-0x0000000000400000-0x0000000001DF1000-memory.dmp family_glupteba behavioral1/memory/1332-224-0x0000000000400000-0x0000000001DF1000-memory.dmp family_glupteba behavioral1/memory/1332-225-0x0000000000400000-0x0000000001DF1000-memory.dmp family_glupteba behavioral1/memory/1332-226-0x0000000000400000-0x0000000001DF1000-memory.dmp family_glupteba behavioral1/memory/1332-227-0x0000000000400000-0x0000000001DF1000-memory.dmp family_glupteba behavioral1/memory/1332-228-0x0000000000400000-0x0000000001DF1000-memory.dmp family_glupteba behavioral1/memory/1332-229-0x0000000000400000-0x0000000001DF1000-memory.dmp family_glupteba behavioral1/memory/1332-230-0x0000000000400000-0x0000000001DF1000-memory.dmp family_glupteba behavioral1/memory/1332-231-0x0000000000400000-0x0000000001DF1000-memory.dmp family_glupteba -
Modifies Windows Firewall 2 TTPs 1 IoCs
pid Process 3308 netsh.exe -
Executes dropped EXE 2 IoCs
pid Process 1332 csrss.exe 540 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\"" 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.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 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 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe -
Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\rss 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe File created C:\Windows\rss\csrss.exe 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe -
Program crash 2 IoCs
pid pid_target Process procid_target 4264 940 WerFault.exe 84 620 2632 WerFault.exe 94 -
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 1772 schtasks.exe 1620 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,-384 = "Namibia Daylight Time" 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.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,-282 = "Central Europe Standard Time" 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2041 = "Eastern Daylight Time (Mexico)" 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-361 = "GTB Daylight Time" 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-232 = "Hawaiian Standard Time" 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-334 = "Jordan Daylight Time" 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed 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\C:\Windows\system32\,@tzres.dll,-81 = "Atlantic Daylight Time" 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-451 = "Caucasus Daylight Time" 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-351 = "FLE Daylight Time" 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\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\C:\Windows\system32\,@tzres.dll,-2062 = "North Korea Standard Time" 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-3052 = "Qyzylorda Standard Time" 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs 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\C:\Windows\system32\,@tzres.dll,-462 = "Afghanistan Standard Time" 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-461 = "Afghanistan Daylight Time" 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-161 = "Central Daylight Time" 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust 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,-932 = "Coordinated Universal Time" 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-682 = "E. Australia Standard Time" 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-272 = "Greenwich Standard Time" 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-131 = "US Eastern Daylight Time" 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-571 = "China Daylight Time" 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.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,-435 = "Georgian Standard Time" 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-72 = "Newfoundland Standard Time" 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2592 = "Tocantins Standard Time" 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-662 = "Cen. Australia Standard Time" 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-162 = "Central Standard Time" 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-172 = "Central Standard Time (Mexico)" 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-911 = "Mauritius Daylight Time" 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-302 = "Romance Standard Time" 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-331 = "E. Europe Daylight Time" 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-261 = "GMT Daylight Time" 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-211 = "Pacific Daylight Time" 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" powershell.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2942 = "Sao Tome Standard Time" 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-12 = "Azores Standard Time" 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-251 = "Dateline Daylight Time" 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1060 powershell.exe 1060 powershell.exe 940 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe 940 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe 3392 powershell.exe 3392 powershell.exe 2632 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe 2632 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe 2632 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe 2632 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe 2632 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe 2632 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe 2632 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe 2632 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe 2632 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe 2632 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe 1212 powershell.exe 1212 powershell.exe 2700 powershell.exe 2700 powershell.exe 884 powershell.exe 884 powershell.exe 4824 powershell.exe 4824 powershell.exe 2132 powershell.exe 2132 powershell.exe 540 injector.exe 540 injector.exe 540 injector.exe 540 injector.exe 540 injector.exe 540 injector.exe 540 injector.exe 1332 csrss.exe 540 injector.exe 1332 csrss.exe 540 injector.exe 540 injector.exe 540 injector.exe 540 injector.exe 1332 csrss.exe 1332 csrss.exe 540 injector.exe 540 injector.exe 540 injector.exe 540 injector.exe 540 injector.exe 540 injector.exe 540 injector.exe 540 injector.exe 540 injector.exe 540 injector.exe 540 injector.exe 540 injector.exe 540 injector.exe 540 injector.exe 540 injector.exe 540 injector.exe 540 injector.exe 540 injector.exe 540 injector.exe 540 injector.exe 540 injector.exe 540 injector.exe -
Suspicious use of AdjustPrivilegeToken 10 IoCs
description pid Process Token: SeDebugPrivilege 1060 powershell.exe Token: SeDebugPrivilege 940 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe Token: SeImpersonatePrivilege 940 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe Token: SeDebugPrivilege 3392 powershell.exe Token: SeDebugPrivilege 1212 powershell.exe Token: SeDebugPrivilege 2700 powershell.exe Token: SeDebugPrivilege 884 powershell.exe Token: SeDebugPrivilege 4824 powershell.exe Token: SeDebugPrivilege 2132 powershell.exe Token: SeSystemEnvironmentPrivilege 1332 csrss.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 940 wrote to memory of 1060 940 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe 89 PID 940 wrote to memory of 1060 940 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe 89 PID 940 wrote to memory of 1060 940 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe 89 PID 2632 wrote to memory of 3392 2632 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe 98 PID 2632 wrote to memory of 3392 2632 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe 98 PID 2632 wrote to memory of 3392 2632 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe 98 PID 2632 wrote to memory of 4152 2632 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe 100 PID 2632 wrote to memory of 4152 2632 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe 100 PID 4152 wrote to memory of 3308 4152 cmd.exe 102 PID 4152 wrote to memory of 3308 4152 cmd.exe 102 PID 2632 wrote to memory of 1212 2632 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe 103 PID 2632 wrote to memory of 1212 2632 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe 103 PID 2632 wrote to memory of 1212 2632 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe 103 PID 2632 wrote to memory of 2700 2632 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe 105 PID 2632 wrote to memory of 2700 2632 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe 105 PID 2632 wrote to memory of 2700 2632 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe 105 PID 2632 wrote to memory of 1332 2632 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe 107 PID 2632 wrote to memory of 1332 2632 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe 107 PID 2632 wrote to memory of 1332 2632 635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe 107 PID 1332 wrote to memory of 884 1332 csrss.exe 110 PID 1332 wrote to memory of 884 1332 csrss.exe 110 PID 1332 wrote to memory of 884 1332 csrss.exe 110 PID 1332 wrote to memory of 4824 1332 csrss.exe 117 PID 1332 wrote to memory of 4824 1332 csrss.exe 117 PID 1332 wrote to memory of 4824 1332 csrss.exe 117 PID 1332 wrote to memory of 2132 1332 csrss.exe 119 PID 1332 wrote to memory of 2132 1332 csrss.exe 119 PID 1332 wrote to memory of 2132 1332 csrss.exe 119 PID 1332 wrote to memory of 540 1332 csrss.exe 121 PID 1332 wrote to memory of 540 1332 csrss.exe 121 -
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\635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe"C:\Users\Admin\AppData\Local\Temp\635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:940 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1060
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C:\Users\Admin\AppData\Local\Temp\635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.exe"C:\Users\Admin\AppData\Local\Temp\635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b.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:2632 -
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:3392
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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:4152 -
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:3308
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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:1212
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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:2700
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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:1332 -
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:884
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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:1772
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵PID:2576
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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:4824
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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:2132
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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:540
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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:1620
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2632 -s 6083⤵
- Program crash
PID:620
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 940 -s 8042⤵
- Program crash
PID:4264
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 940 -ip 9401⤵PID:2192
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2632 -ip 26321⤵PID:3884
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
MD5968cb9309758126772781b83adb8a28f
SHA18da30e71accf186b2ba11da1797cf67f8f78b47c
SHA25692099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a
SHA5124bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD55b1824fae2ddc949fb172bbb6a77919a
SHA14e1f45329ecd0602abd8b136edd7792e9814325b
SHA256eadc16fc23a17cd539c6734d5de4bade553343d04d1a16cf647ba94cc6e2ceb2
SHA51243f7020ff6554288d7a9499e2a9707d12b9f79a0a70c540ca86c1680a75d4471b33a44f6ccf3e9bf230535ddb71d76bba0883f2979789c691e5452af9d282e1d
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD588293b15b117709873241ea18df32bdd
SHA1fc20923ac10da40ed63d4538ba880736a649ccd7
SHA25655697a392ee6aec9e4bc3fc0f1480a905fb69a0449cbbdf03b864f37d391945f
SHA512f08cfb9870659fb6dc38ac90453bebe80efc79a2e0bdad46789a6c85ceb0fed6c6338dbbcd0df6b60f282fec93ff90edd65ddd5b6f4f8979ddfe72083e498a7f
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD54a5e8c84ed63b3934163426ab0e326f5
SHA1c31e8d9796edd9759fceef2dc6a95142c62a81fb
SHA256ebd85c51fc7e40c2397be2719c08cb8c3fb3bd9fcf2fbdbb5a676ee09a8149f1
SHA512cf76a8ad4e5ecd7c648e6f71316d870845c1e6ad8ba1bb3511352baa9d514dda6d8c026a66ad15b023b3f3eb50908c9c319dee28baf4bf8bc07886345c0b99fc
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD508448bb7eeb92e0ead321425d7a21578
SHA10e805a91ec44c74494b1d90fde7e09fbeafc6ca7
SHA2568c65f7fc98450c69610b677cd7a1e0bd94a2ab8d52a4385076e7926074d05ca2
SHA5127704c276c6c1803d40ced206e7208b1941effe383818abfa2ec2184dfcbb93d483f65c7ac3a0d5bd60f5395eb9a04206a4b301085c7475dad6b882730727f4ca
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5de760d1e7667ca34a3cb491ec98b7a46
SHA19c8b8a5b4ff79bfc51ad86f94ca2f1b2c4fb9804
SHA256a33682aa5440485fe616b4594ddece0ac1a7a83f649ac5585cf9c5375d3bf377
SHA5122f58c45c714f07d34d81bf5b3be94593ca1d97659496e1c5b829bd93baf9f2327932c9e1a516c7e638debf4b0b9c8542c5b3610ba3c650334560a81782cccb6d
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Filesize
4.1MB
MD55908abf93b8fe7a85de6d65956c0fabb
SHA14486a4a06efb73fb0c0c417510ab91b50856a224
SHA256635ff9a5d94886930c7d6edcbaba7593e6023f4167879cff070781c4a429652b
SHA512e47e68c2aa57125c6e68166682f29958af4ae087d3f6e5b19b8aec9862fbe4c8d2f35de5bc4ae158b598a6512c0fcc66759688273dce10e76b373d9dddd282f0