Analysis
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max time kernel
149s -
max time network
124s -
platform
windows11-21h2_x64 -
resource
win11-20240412-en -
resource tags
arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system -
submitted
19-04-2024 20:03
Static task
static1
Behavioral task
behavioral1
Sample
f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe
Resource
win10v2004-20240412-en
General
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Target
f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe
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Size
4.2MB
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MD5
922ea5152ba31e939f923f84381e5471
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SHA1
4eff6dc0c7104a9769db045bdc94ba24be7f6894
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SHA256
f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0
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SHA512
aeeb3d82bcdba8c9f94cfcf5599a8b278bee13c3e34d99dec279946316d157164128f902659220c453e2c723d3c57bd64c0287cc7c7f368591bff797a22b0b1a
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SSDEEP
98304:J00QK3N3Jc8wpX9Ml+P+WnP01raAvqFLRTemOJzdkXGK:LpJcNpX++PyaASVpB6kv
Malware Config
Signatures
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Glupteba payload 19 IoCs
Processes:
resource yara_rule behavioral2/memory/4796-2-0x00000000041F0000-0x0000000004ADB000-memory.dmp family_glupteba behavioral2/memory/4796-3-0x0000000000400000-0x0000000001E06000-memory.dmp family_glupteba behavioral2/memory/1760-52-0x00000000040E0000-0x00000000049CB000-memory.dmp family_glupteba behavioral2/memory/4796-53-0x0000000000400000-0x0000000001E06000-memory.dmp family_glupteba behavioral2/memory/1760-55-0x0000000000400000-0x0000000001E06000-memory.dmp family_glupteba behavioral2/memory/1760-146-0x0000000000400000-0x0000000001E06000-memory.dmp family_glupteba behavioral2/memory/2804-245-0x0000000000400000-0x0000000001E06000-memory.dmp family_glupteba behavioral2/memory/2804-254-0x0000000000400000-0x0000000001E06000-memory.dmp family_glupteba behavioral2/memory/2804-256-0x0000000000400000-0x0000000001E06000-memory.dmp family_glupteba behavioral2/memory/2804-258-0x0000000000400000-0x0000000001E06000-memory.dmp family_glupteba behavioral2/memory/2804-260-0x0000000000400000-0x0000000001E06000-memory.dmp family_glupteba behavioral2/memory/2804-262-0x0000000000400000-0x0000000001E06000-memory.dmp family_glupteba behavioral2/memory/2804-264-0x0000000000400000-0x0000000001E06000-memory.dmp family_glupteba behavioral2/memory/2804-266-0x0000000000400000-0x0000000001E06000-memory.dmp family_glupteba behavioral2/memory/2804-268-0x0000000000400000-0x0000000001E06000-memory.dmp family_glupteba behavioral2/memory/2804-270-0x0000000000400000-0x0000000001E06000-memory.dmp family_glupteba behavioral2/memory/2804-272-0x0000000000400000-0x0000000001E06000-memory.dmp family_glupteba behavioral2/memory/2804-274-0x0000000000400000-0x0000000001E06000-memory.dmp family_glupteba behavioral2/memory/2804-276-0x0000000000400000-0x0000000001E06000-memory.dmp family_glupteba -
Modifies Windows Firewall 2 TTPs 1 IoCs
Processes:
netsh.exepid process 3360 netsh.exe -
Executes dropped EXE 4 IoCs
Processes:
csrss.exeinjector.exewindefender.exewindefender.exepid process 2804 csrss.exe 1856 injector.exe 1740 windefender.exe 2656 windefender.exe -
Processes:
resource yara_rule C:\Windows\windefender.exe upx behavioral2/memory/1740-252-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/2656-255-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/2656-259-0x0000000000400000-0x00000000008DF000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.execsrss.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3263309122-2820180308-3568046652-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe Set value (str) \REGISTRY\USER\S-1-5-21-3263309122-2820180308-3568046652-1000\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.
Processes:
csrss.exedescription ioc process File opened for modification \??\WinMonFS csrss.exe -
Drops file in System32 directory 7 IoCs
Processes:
powershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exedescription 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 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 -
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.
Processes:
f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exedescription ioc process File opened (read-only) \??\VBoxMiniRdrDN f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe -
Drops file in Windows directory 4 IoCs
Processes:
f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.execsrss.exedescription ioc process File opened for modification C:\Windows\rss f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe File created C:\Windows\rss\csrss.exe f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe File created C:\Windows\windefender.exe csrss.exe File opened for modification C:\Windows\windefender.exe csrss.exe -
Launches sc.exe 1 IoCs
Sc.exe is a Windows utlilty to control services on the system.
Processes:
sc.exepid process 444 sc.exe -
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 1336 4796 WerFault.exe f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe -
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
Processes:
schtasks.exeschtasks.exepid process 3276 schtasks.exe 2488 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exepowershell.exepowershell.exewindefender.exepowershell.exepowershell.exepowershell.exepowershell.exedescription ioc process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2591 = "Tocantins Daylight Time" f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1022 = "Bangladesh Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-292 = "Central European Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-961 = "Paraguay Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-3142 = "South Sudan Standard Time" f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-602 = "Taipei Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-622 = "Korea Standard Time" f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2871 = "Magallanes Daylight Time" f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1832 = "Russia TZ 2 Standard Time" f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-342 = "Egypt Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1842 = "Russia TZ 4 Standard Time" f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-81 = "Atlantic Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-362 = "GTB Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-32 = "Mid-Atlantic Standard Time" f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-201 = "US Mountain Daylight Time" f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2412 = "Marquesas Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1872 = "Russia TZ 7 Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-262 = "GMT Standard Time" f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-371 = "Jerusalem Daylight Time" f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs 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\AutoDetect = "0" powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-11 = "Azores Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-751 = "Tonga Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-671 = "AUS Eastern Daylight Time" f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1502 = "Turkey Standard Time" windefender.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-272 = "Greenwich Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2141 = "Transbaikal Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-201 = "US Mountain Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-331 = "E. Europe Daylight Time" f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2941 = "Sao Tome Daylight Time" f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2752 = "Tomsk Standard Time" f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates powershell.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-231 = "Hawaiian Daylight Time" f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-542 = "Myanmar Standard Time" f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-791 = "SA Western Daylight Time" f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-591 = "Malay Peninsula Daylight Time" f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-132 = "US Eastern Standard Time" f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs 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\26\52C64B7E\@tzres.dll,-411 = "E. Africa Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-682 = "E. Australia Standard Time" f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2062 = "North Korea Standard Time" f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2842 = "Saratov Standard Time" f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2391 = "Aleutian Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-401 = "Arabic Daylight Time" f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-541 = "Myanmar Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-962 = "Paraguay Standard Time" windefender.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
powershell.exef1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exepowershell.exef1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exeinjector.execsrss.exepid process 4488 powershell.exe 4488 powershell.exe 4796 f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe 4796 f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe 2848 powershell.exe 2848 powershell.exe 1760 f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe 1760 f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe 1760 f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe 1760 f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe 1760 f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe 1760 f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe 1760 f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe 1760 f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe 1760 f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe 1760 f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe 2092 powershell.exe 2092 powershell.exe 1160 powershell.exe 1160 powershell.exe 1772 powershell.exe 1772 powershell.exe 2840 powershell.exe 2840 powershell.exe 280 powershell.exe 280 powershell.exe 1856 injector.exe 1856 injector.exe 1856 injector.exe 1856 injector.exe 1856 injector.exe 1856 injector.exe 2804 csrss.exe 2804 csrss.exe 1856 injector.exe 1856 injector.exe 1856 injector.exe 1856 injector.exe 1856 injector.exe 1856 injector.exe 2804 csrss.exe 2804 csrss.exe 1856 injector.exe 1856 injector.exe 1856 injector.exe 1856 injector.exe 2804 csrss.exe 2804 csrss.exe 1856 injector.exe 1856 injector.exe 1856 injector.exe 1856 injector.exe 1856 injector.exe 1856 injector.exe 1856 injector.exe 1856 injector.exe 1856 injector.exe 1856 injector.exe 1856 injector.exe 1856 injector.exe 1856 injector.exe 1856 injector.exe 1856 injector.exe 1856 injector.exe -
Suspicious use of AdjustPrivilegeToken 12 IoCs
Processes:
powershell.exef1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.execsrss.exesc.exedescription pid process Token: SeDebugPrivilege 4488 powershell.exe Token: SeDebugPrivilege 4796 f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe Token: SeImpersonatePrivilege 4796 f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe Token: SeDebugPrivilege 2848 powershell.exe Token: SeDebugPrivilege 2092 powershell.exe Token: SeDebugPrivilege 1160 powershell.exe Token: SeDebugPrivilege 1772 powershell.exe Token: SeDebugPrivilege 2840 powershell.exe Token: SeDebugPrivilege 280 powershell.exe Token: SeSystemEnvironmentPrivilege 2804 csrss.exe Token: SeSecurityPrivilege 444 sc.exe Token: SeSecurityPrivilege 444 sc.exe -
Suspicious use of WriteProcessMemory 36 IoCs
Processes:
f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exef1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.execmd.execsrss.exewindefender.execmd.exedescription pid process target process PID 4796 wrote to memory of 4488 4796 f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe powershell.exe PID 4796 wrote to memory of 4488 4796 f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe powershell.exe PID 4796 wrote to memory of 4488 4796 f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe powershell.exe PID 1760 wrote to memory of 2848 1760 f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe powershell.exe PID 1760 wrote to memory of 2848 1760 f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe powershell.exe PID 1760 wrote to memory of 2848 1760 f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe powershell.exe PID 1760 wrote to memory of 440 1760 f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe cmd.exe PID 1760 wrote to memory of 440 1760 f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe cmd.exe PID 440 wrote to memory of 3360 440 cmd.exe netsh.exe PID 440 wrote to memory of 3360 440 cmd.exe netsh.exe PID 1760 wrote to memory of 2092 1760 f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe powershell.exe PID 1760 wrote to memory of 2092 1760 f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe powershell.exe PID 1760 wrote to memory of 2092 1760 f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe powershell.exe PID 1760 wrote to memory of 1160 1760 f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe powershell.exe PID 1760 wrote to memory of 1160 1760 f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe powershell.exe PID 1760 wrote to memory of 1160 1760 f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe powershell.exe PID 1760 wrote to memory of 2804 1760 f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe csrss.exe PID 1760 wrote to memory of 2804 1760 f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe csrss.exe PID 1760 wrote to memory of 2804 1760 f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe csrss.exe PID 2804 wrote to memory of 1772 2804 csrss.exe powershell.exe PID 2804 wrote to memory of 1772 2804 csrss.exe powershell.exe PID 2804 wrote to memory of 1772 2804 csrss.exe powershell.exe PID 2804 wrote to memory of 2840 2804 csrss.exe powershell.exe PID 2804 wrote to memory of 2840 2804 csrss.exe powershell.exe PID 2804 wrote to memory of 2840 2804 csrss.exe powershell.exe PID 2804 wrote to memory of 280 2804 csrss.exe powershell.exe PID 2804 wrote to memory of 280 2804 csrss.exe powershell.exe PID 2804 wrote to memory of 280 2804 csrss.exe powershell.exe PID 2804 wrote to memory of 1856 2804 csrss.exe injector.exe PID 2804 wrote to memory of 1856 2804 csrss.exe injector.exe PID 1740 wrote to memory of 1744 1740 windefender.exe cmd.exe PID 1740 wrote to memory of 1744 1740 windefender.exe cmd.exe PID 1740 wrote to memory of 1744 1740 windefender.exe cmd.exe PID 1744 wrote to memory of 444 1744 cmd.exe sc.exe PID 1744 wrote to memory of 444 1744 cmd.exe sc.exe PID 1744 wrote to memory of 444 1744 cmd.exe sc.exe -
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\f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe"C:\Users\Admin\AppData\Local\Temp\f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4796 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4488 -
C:\Users\Admin\AppData\Local\Temp\f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.exe"C:\Users\Admin\AppData\Local\Temp\f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0.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:1760 -
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:2848 -
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:440 -
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:3360 -
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:2092 -
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:1160 -
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:2804 -
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:1772 -
C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F4⤵
- Creates scheduled task(s)
PID:3276 -
C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵PID:3004
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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:2840 -
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:280 -
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:1856 -
C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F4⤵
- Creates scheduled task(s)
PID:2488 -
C:\Windows\windefender.exe"C:\Windows\windefender.exe"4⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:1740 -
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:1744 -
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:444 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4796 -s 9602⤵
- Program crash
PID:1336
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4796 -ip 47961⤵PID:2328
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C:\Windows\windefender.exeC:\Windows\windefender.exe1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2656
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
MD5ac4917a885cf6050b1a483e4bc4d2ea5
SHA1b1c0a9f27bd21c6bbb8e9be70db8777b4a2a640f
SHA256e39062a62c3c7617feeeff95ea8a0be51104a0d36f46e44eea22556fda74d8d9
SHA512092c67a3ecae1d187cad72a8ea1ea37cb78a0cf79c2cd7fb88953e5990669a2e871267015762fd46d274badb88ac0c1d73b00f1df7394d89bed48a3a45c2ba3d
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD569c7ab75de5fe38350579ff448f06b0c
SHA1011debaba772fbebdd0b2729c8c0c7a4e6347c1b
SHA256c9b20e3a93608528b76cf8cfb21a686e48885bde2a0dfbfa6d2df601faae924f
SHA5123087fb867566e9038862829af6e4538cd24cda6adf8bec0fa55157a1f089bdce5527442c5615d2a3f77d94329650ef0d3aa931309c127a51dfd97083039275b3
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD57e7c45efe841a7423c7346640d5d5664
SHA13a78f3f232703e8aca1c04d4d6a7021f968cfe32
SHA2561478d72bd11ee8324e62b781dd636dbeb23d84cac8b6c0b72b982295b11f2712
SHA5121a96965997a2c5c9e419f6889b5d60c33bd3a1fa326d5bfc75aaf7d038179b92a4c0453f1f8c07930dce9cbb643c2c07ba3f735f86b5bd85e9ada45683adb402
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD54d3f5960e56b65810ddb9ac836f00406
SHA107607694398146444a8bab8721faf15a5e1b84d3
SHA256e5932378b9fa0519167f42a37ee121196d27720306ca973cd2d34c337f9d2306
SHA51245c747f825d7b5225a12824448ef9bf07e65d8db685b46cafd5a874fa84f10405332b71b14c4be7fb5ddb721982f97219a0018c617e32cc0693ca14564e3ffcb
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5561bf17a9bfbda15f1bca4754e3ef1b7
SHA1f764a9c994b1df4648266004bd866ddcfaa07672
SHA25681a374f5e341acc096427db94d897fe66a27b31245dcef816e1479c1e5342c5f
SHA512c234436a15559e5f7d4c1d9de20ced54e0a1320abf0ff4eebb1cac8b11275a99fd6636a762ca6d841f9d23d3a06bf518c4919c9828675f54c273dc44dbb105d9
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD568fe92be9d752999d19f33ef65d57c7e
SHA104d9603c6904be192de8aed95da68e54ca317fd1
SHA25658fb283c4feb64f16d338518c929d61dd299f75edd4fe7b29d7d4c8c7daad4dd
SHA51294596891e4c249964c0532dc041bc66acc3b3a4b81248a0cb34c74b5abbdbec328bead8a3f0ef21b996ebdee3d25b63ea94f4dbf30e006292a4e9adbbd00ccbd
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Filesize
4.2MB
MD5922ea5152ba31e939f923f84381e5471
SHA14eff6dc0c7104a9769db045bdc94ba24be7f6894
SHA256f1e43ae4574ddc6a5f99dfb1d4e8df6abbabc0022eb12195b20cbb96f52a30d0
SHA512aeeb3d82bcdba8c9f94cfcf5599a8b278bee13c3e34d99dec279946316d157164128f902659220c453e2c723d3c57bd64c0287cc7c7f368591bff797a22b0b1a
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Filesize
2.0MB
MD58e67f58837092385dcf01e8a2b4f5783
SHA1012c49cfd8c5d06795a6f67ea2baf2a082cf8625
SHA256166ddb03ff3c89bd4525ac390067e180fdd08f10fbcf4aadb0189541673c03fa
SHA51240d8ae12663fc1851e171d9d86cea8bb12487b734c218d7b6f9742eb07d4ca265065cbd6d0bb908f8bda7e3d955c458dfe3fd13265bbf573b9351e0a2bf691ec