Analysis
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max time kernel
149s -
max time network
151s -
platform
windows11-21h2_x64 -
resource
win11-20240508-en -
resource tags
arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system -
submitted
19-05-2024 14:05
Static task
static1
Behavioral task
behavioral1
Sample
a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe
Resource
win10v2004-20240226-en
General
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Target
a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe
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Size
4.1MB
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MD5
3a1f0ccd7581c4d3f50f1de795b2e483
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SHA1
5290e1c4aad1f21eb45ac175a90292a81e75eed0
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SHA256
a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c
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SHA512
e9a7bb02d67c93f5803ca7669bd3db8b2efc283688cceef582ea6afb132133daa99702a8617a4c011b584369dddbff2440db1f2ce4d91216eb4a5c0ac101dc81
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SSDEEP
98304:YuOdAWE/bfbxbxBimum48oJjLrUZhWcgWy75MTps2CObMUZCzBSe:YuOpIddBi3V8Ojm7gWylM939C/
Malware Config
Signatures
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Glupteba payload 19 IoCs
Processes:
resource yara_rule behavioral2/memory/1120-2-0x0000000004AB0000-0x000000000539B000-memory.dmp family_glupteba behavioral2/memory/1120-3-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/1120-98-0x0000000004AB0000-0x000000000539B000-memory.dmp family_glupteba behavioral2/memory/1120-97-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral2/memory/4500-124-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral2/memory/1120-147-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/4300-200-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral2/memory/4300-210-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral2/memory/4300-212-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral2/memory/4300-215-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral2/memory/4300-219-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral2/memory/4300-222-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral2/memory/4300-224-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral2/memory/4300-227-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral2/memory/4300-231-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral2/memory/4300-233-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral2/memory/4300-236-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral2/memory/4300-240-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral2/memory/4300-243-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba -
Modifies Windows Firewall 2 TTPs 1 IoCs
Processes:
netsh.exepid Process 2840 netsh.exe -
Executes dropped EXE 4 IoCs
Processes:
csrss.exeinjector.exewindefender.exewindefender.exepid Process 4300 csrss.exe 2200 injector.exe 3996 windefender.exe 3424 windefender.exe -
Processes:
resource yara_rule behavioral2/files/0x000200000002a9d6-204.dat upx behavioral2/memory/3996-206-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/3996-209-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/3424-213-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/3424-218-0x0000000000400000-0x00000000008DF000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.execsrss.exedescription ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2457560273-69882387-977367775-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe Set value (str) \REGISTRY\USER\S-1-5-21-2457560273-69882387-977367775-1000\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 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 -
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:
a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exedescription ioc Process File opened (read-only) \??\VBoxMiniRdrDN a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe -
Drops file in Windows directory 4 IoCs
Processes:
csrss.exea5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exedescription ioc Process File created C:\Windows\windefender.exe csrss.exe File opened for modification C:\Windows\windefender.exe csrss.exe File opened for modification C:\Windows\rss a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe File created C:\Windows\rss\csrss.exe a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe -
Launches sc.exe 1 IoCs
Sc.exe is a Windows utlilty to control services on the system.
Processes:
sc.exepid Process 4668 sc.exe -
Processes:
powershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepid Process 1620 powershell.exe 984 powershell.exe 4264 powershell.exe 1944 powershell.exe 2668 powershell.exe 5024 powershell.exe 4044 powershell.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 2672 schtasks.exe 3784 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exewindefender.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exedescription ioc Process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-442 = "Arabian Standard Time" a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-221 = "Alaskan Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1502 = "Turkey Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-571 = "China Daylight Time" a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-351 = "FLE Daylight Time" a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-651 = "AUS Central Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-434 = "Georgian Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2612 = "Bougainville Standard Time" a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2752 = "Tomsk Standard Time" a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-741 = "New Zealand Daylight Time" a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-351 = "FLE Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-335 = "Jordan Standard Time" windefender.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\@tzres.dll,-372 = "Jerusalem Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-871 = "Pakistan Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2491 = "Aus Central W. Daylight Time" a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-111 = "Eastern Daylight Time" a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-541 = "Myanmar Daylight Time" a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-502 = "Nepal Standard Time" a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1042 = "Ulaanbaatar Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2532 = "Chatham Islands Standard Time" a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs 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\Disallowed\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-222 = "Alaskan Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-371 = "Jerusalem Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-152 = "Central America Standard Time" a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-511 = "Central Asia Daylight Time" a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-132 = "US Eastern Standard Time" a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates 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\@tzres.dll,-661 = "Cen. Australia Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-385 = "Namibia Standard Time" a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-342 = "Egypt Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-911 = "Mauritius Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2841 = "Saratov Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-431 = "Iran Daylight Time" a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs powershell.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" powershell.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\@tzres.dll,-401 = "Arabic Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-651 = "AUS Central Daylight Time" a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-591 = "Malay Peninsula Daylight Time" a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2592 = "Tocantins Standard Time" a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-411 = "E. Africa Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-364 = "Middle East Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-981 = "Kamchatka Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-3052 = "Qyzylorda Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-841 = "Argentina Daylight Time" a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2431 = "Cuba Daylight Time" a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1841 = "Russia TZ 4 Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-334 = "Jordan Daylight Time" windefender.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs powershell.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
powershell.exea5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exepowershell.exea5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exeinjector.execsrss.exepid Process 1944 powershell.exe 1944 powershell.exe 1120 a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe 1120 a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe 2668 powershell.exe 2668 powershell.exe 4500 a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe 4500 a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe 4500 a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe 4500 a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe 4500 a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe 4500 a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe 4500 a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe 4500 a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe 4500 a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe 4500 a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe 5024 powershell.exe 5024 powershell.exe 4044 powershell.exe 4044 powershell.exe 1620 powershell.exe 1620 powershell.exe 984 powershell.exe 984 powershell.exe 4264 powershell.exe 4264 powershell.exe 2200 injector.exe 2200 injector.exe 2200 injector.exe 2200 injector.exe 2200 injector.exe 2200 injector.exe 4300 csrss.exe 4300 csrss.exe 2200 injector.exe 2200 injector.exe 2200 injector.exe 2200 injector.exe 2200 injector.exe 2200 injector.exe 4300 csrss.exe 4300 csrss.exe 2200 injector.exe 2200 injector.exe 4300 csrss.exe 4300 csrss.exe 2200 injector.exe 2200 injector.exe 2200 injector.exe 2200 injector.exe 2200 injector.exe 2200 injector.exe 2200 injector.exe 2200 injector.exe 2200 injector.exe 2200 injector.exe 2200 injector.exe 2200 injector.exe 2200 injector.exe 2200 injector.exe 2200 injector.exe 2200 injector.exe 2200 injector.exe 2200 injector.exe -
Suspicious use of AdjustPrivilegeToken 12 IoCs
Processes:
powershell.exea5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.execsrss.exesc.exedescription pid Process Token: SeDebugPrivilege 1944 powershell.exe Token: SeDebugPrivilege 1120 a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe Token: SeImpersonatePrivilege 1120 a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe Token: SeDebugPrivilege 2668 powershell.exe Token: SeDebugPrivilege 5024 powershell.exe Token: SeDebugPrivilege 4044 powershell.exe Token: SeDebugPrivilege 1620 powershell.exe Token: SeDebugPrivilege 984 powershell.exe Token: SeDebugPrivilege 4264 powershell.exe Token: SeSystemEnvironmentPrivilege 4300 csrss.exe Token: SeSecurityPrivilege 4668 sc.exe Token: SeSecurityPrivilege 4668 sc.exe -
Suspicious use of WriteProcessMemory 36 IoCs
Processes:
a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exea5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.execmd.execsrss.exewindefender.execmd.exedescription pid Process procid_target PID 1120 wrote to memory of 1944 1120 a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe 82 PID 1120 wrote to memory of 1944 1120 a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe 82 PID 1120 wrote to memory of 1944 1120 a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe 82 PID 4500 wrote to memory of 2668 4500 a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe 87 PID 4500 wrote to memory of 2668 4500 a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe 87 PID 4500 wrote to memory of 2668 4500 a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe 87 PID 4500 wrote to memory of 5112 4500 a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe 89 PID 4500 wrote to memory of 5112 4500 a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe 89 PID 5112 wrote to memory of 2840 5112 cmd.exe 91 PID 5112 wrote to memory of 2840 5112 cmd.exe 91 PID 4500 wrote to memory of 5024 4500 a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe 92 PID 4500 wrote to memory of 5024 4500 a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe 92 PID 4500 wrote to memory of 5024 4500 a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe 92 PID 4500 wrote to memory of 4044 4500 a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe 94 PID 4500 wrote to memory of 4044 4500 a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe 94 PID 4500 wrote to memory of 4044 4500 a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe 94 PID 4500 wrote to memory of 4300 4500 a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe 96 PID 4500 wrote to memory of 4300 4500 a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe 96 PID 4500 wrote to memory of 4300 4500 a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe 96 PID 4300 wrote to memory of 1620 4300 csrss.exe 97 PID 4300 wrote to memory of 1620 4300 csrss.exe 97 PID 4300 wrote to memory of 1620 4300 csrss.exe 97 PID 4300 wrote to memory of 984 4300 csrss.exe 102 PID 4300 wrote to memory of 984 4300 csrss.exe 102 PID 4300 wrote to memory of 984 4300 csrss.exe 102 PID 4300 wrote to memory of 4264 4300 csrss.exe 105 PID 4300 wrote to memory of 4264 4300 csrss.exe 105 PID 4300 wrote to memory of 4264 4300 csrss.exe 105 PID 4300 wrote to memory of 2200 4300 csrss.exe 107 PID 4300 wrote to memory of 2200 4300 csrss.exe 107 PID 3996 wrote to memory of 3036 3996 windefender.exe 113 PID 3996 wrote to memory of 3036 3996 windefender.exe 113 PID 3996 wrote to memory of 3036 3996 windefender.exe 113 PID 3036 wrote to memory of 4668 3036 cmd.exe 114 PID 3036 wrote to memory of 4668 3036 cmd.exe 114 PID 3036 wrote to memory of 4668 3036 cmd.exe 114 -
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\a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe"C:\Users\Admin\AppData\Local\Temp\a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1120 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1944
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C:\Users\Admin\AppData\Local\Temp\a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.exe"C:\Users\Admin\AppData\Local\Temp\a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c.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:4500 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile3⤵
- Drops file in System32 directory
- Command and Scripting Interpreter: PowerShell
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2668
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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:5112 -
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:2840
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile3⤵
- Drops file in System32 directory
- Command and Scripting Interpreter: PowerShell
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:5024
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile3⤵
- Drops file in System32 directory
- Command and Scripting Interpreter: PowerShell
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4044
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C:\Windows\rss\csrss.exeC:\Windows\rss\csrss.exe3⤵
- Executes dropped EXE
- Adds Run key to start application
- Manipulates WinMonFS driver.
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4300 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile4⤵
- Drops file in System32 directory
- Command and Scripting Interpreter: PowerShell
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1620
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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:2672
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵PID:1992
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile4⤵
- Drops file in System32 directory
- Command and Scripting Interpreter: PowerShell
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:984
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile4⤵
- Drops file in System32 directory
- Command and Scripting Interpreter: PowerShell
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4264
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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:2200
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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:3784
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C:\Windows\windefender.exe"C:\Windows\windefender.exe"4⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:3996 -
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:3036 -
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:4668
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C:\Windows\windefender.exeC:\Windows\windefender.exe1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:3424
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Scheduled Task/Job
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Scheduled Task/Job
1Replay Monitor
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Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
281KB
MD5d98e33b66343e7c96158444127a117f6
SHA1bb716c5509a2bf345c6c1152f6e3e1452d39d50d
SHA2565de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1
SHA512705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
Filesize2KB
MD5d0c46cad6c0778401e21910bd6b56b70
SHA17be418951ea96326aca445b8dfe449b2bfa0dca6
SHA2569600b3fdf0565ccb49e21656aa4b24d7c18f776bfd04d9ee984b134707550f02
SHA512057531b468f7fbbb2175a696a8aab274dec0d17d9f71df309edcff35e064f3378050066a3df47ccd03048fac461594ec75e3d4fe64f9dd79949d129f51e02949
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD580a52ea488798e144f7d523b67b10a6d
SHA1aee3f7c0b412d3e61114bf5bfe5219fe1c722e96
SHA2563f775bc70ee53e75446be79099c290c527312d15976a8f29e06531cac5f96bf2
SHA51267818cd33b588015239ef3f769cfaec885ba886650b7be652123a7f873265a51ddcaa9123a0e0de9eed8b0e8badca088757aeb3274d5261a8eb71f5b0faa4955
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5d51ac30865639cafff92989db2b3720b
SHA149dcd12ec8af510108f4b89cd3188b9e8ef42a10
SHA25642b7d72128c481b78273de69ee3435ea9f701d02df4bea819a9fdfd7ac59c884
SHA5121f0fa84c2220e6e591a6ad9a54159e257826a88111690f0f58fa330eed10fd8129a5eb9097b8eb30a064ed4a7670d8eeecbf6c866457b2a9a48104f8b155622f
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD524be23e29dbde75c41ead4d64a70bab8
SHA1243fff18c937b034d52ec133171bbe6eb2cdecd8
SHA25654e4fe14522170e6a6e88966ef010e8ba2c9c2effd4bc1bc615b862a5c16dfeb
SHA512058047d14a08f39e035134347b1bf95d89db02ca3d5dae63d55027076b2aba58a4cf19d702afd951ec9f3962db77251465b3b58b717a9ccb72adb98dca3ec31b
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5470fd881df5bf39aadabe883ca0bf029
SHA16524389bb408703854bea68c20dcdf8c44b0cdb7
SHA256359cd1715d023ecc1091e86a0e89e9ed1f84f25391d9c2694106516af22aafa4
SHA512702d457b638d85399cabb0765894296787057d3a77209065997efc101d0e86b74cd4052bb2c75ba79f03de85262aa7422928bfe815bea0d9d6a74bc3f145424c
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5f6e5660287aff54635c3ce8dc7471f3f
SHA1cfc9f32516dd2263191b22f6796103b8f6faab47
SHA2563cf5fef2b880785960a49efb869007a9c9ef3f15c998bf28c08af95f92d69d0a
SHA5123f4cecc6f3f49b8179b0737b86e09d9b3e7f9cff976a0d2c1384dc4b99315826ab0f21b712f4bc27c21853cdfac2fdba4adb683c63fccb229985af7b23d27204
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Filesize
4.1MB
MD53a1f0ccd7581c4d3f50f1de795b2e483
SHA15290e1c4aad1f21eb45ac175a90292a81e75eed0
SHA256a5515fcc45fb2fd40e5444bb38320c73eaf99d66c09796ae5722dfbae37ca57c
SHA512e9a7bb02d67c93f5803ca7669bd3db8b2efc283688cceef582ea6afb132133daa99702a8617a4c011b584369dddbff2440db1f2ce4d91216eb4a5c0ac101dc81
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Filesize
2.0MB
MD58e67f58837092385dcf01e8a2b4f5783
SHA1012c49cfd8c5d06795a6f67ea2baf2a082cf8625
SHA256166ddb03ff3c89bd4525ac390067e180fdd08f10fbcf4aadb0189541673c03fa
SHA51240d8ae12663fc1851e171d9d86cea8bb12487b734c218d7b6f9742eb07d4ca265065cbd6d0bb908f8bda7e3d955c458dfe3fd13265bbf573b9351e0a2bf691ec