Analysis
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max time kernel
149s -
max time network
131s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
16-05-2024 04:27
Static task
static1
Behavioral task
behavioral1
Sample
b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe
Resource
win10v2004-20240508-en
General
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Target
b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe
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Size
4.1MB
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MD5
ecdfb00cfd850adbe3a723e2bcb3084e
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SHA1
28186151e349b1a86a227235aac4db1444ee780c
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SHA256
b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df
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SHA512
a9d1bf214aae81ac090f65d81b4c0c9a815cceb9fd9a48d8e4853dcd83ba6585fa6488636734363ff37417ec5d548322312e37bec9f739374f8b81c8d0d6a835
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SSDEEP
98304:Z96GAmuNBigEkoqfZTwC6uGlBZNljS4jcy:ZI9hoq9wC6uGlB/xgy
Malware Config
Signatures
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Glupteba payload 18 IoCs
Processes:
resource yara_rule behavioral1/memory/400-2-0x0000000002D20000-0x000000000360B000-memory.dmp family_glupteba behavioral1/memory/400-3-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/400-81-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/400-128-0x0000000002D20000-0x000000000360B000-memory.dmp family_glupteba behavioral1/memory/1268-133-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/3344-215-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/3344-225-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/3344-227-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/3344-230-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/3344-234-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/3344-237-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/3344-239-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/3344-242-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/3344-246-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/3344-249-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/3344-251-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/3344-254-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/3344-258-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba -
Modifies Windows Firewall 2 TTPs 1 IoCs
Processes:
netsh.exepid Process 4184 netsh.exe -
Executes dropped EXE 4 IoCs
Processes:
csrss.exeinjector.exewindefender.exewindefender.exepid Process 3344 csrss.exe 388 injector.exe 5064 windefender.exe 4344 windefender.exe -
Processes:
resource yara_rule behavioral1/files/0x0009000000023402-219.dat upx behavioral1/memory/5064-221-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral1/memory/5064-224-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral1/memory/4344-228-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral1/memory/4344-233-0x0000000000400000-0x00000000008DF000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.execsrss.exedescription ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe Set value (str) \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\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 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 -
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:
b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exedescription ioc Process File opened (read-only) \??\VBoxMiniRdrDN b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe -
Drops file in Windows directory 4 IoCs
Processes:
b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.execsrss.exedescription ioc Process File opened for modification C:\Windows\rss b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe File created C:\Windows\rss\csrss.exe b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.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 3256 sc.exe -
Processes:
powershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepid Process 1836 powershell.exe 1856 powershell.exe 2716 powershell.exe 4436 powershell.exe 3180 powershell.exe 2424 powershell.exe 1216 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 3012 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
powershell.exepowershell.exepowershell.exeb8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exepowershell.exewindefender.exepowershell.exepowershell.exedescription ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-682 = "E. Australia Standard Time" b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1932 = "Russia TZ 11 Standard Time" b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1831 = "Russia TZ 2 Daylight Time" b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.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,-2612 = "Bougainville Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-71 = "Newfoundland Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-32 = "Mid-Atlantic Standard Time" b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-31 = "Mid-Atlantic Daylight Time" b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-462 = "Afghanistan Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-334 = "Jordan Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-601 = "Taipei Daylight Time" b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates 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\CTLs 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,-1661 = "Bahia Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-151 = "Central America 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" b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2632 = "Norfolk Standard Time" b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-161 = "Central Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-192 = "Mountain Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-202 = "US Mountain Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2342 = "Haiti Standard Time" b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-461 = "Afghanistan Daylight Time" windefender.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople powershell.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-12 = "Azores Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2432 = "Cuba Standard Time" b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\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\2a\52C64B7E\@tzres.dll,-181 = "Mountain Daylight Time (Mexico)" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1021 = "Bangladesh Daylight Time" b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-111 = "Eastern Daylight Time" windefender.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA 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\Microsoft\SystemCertificates\SmartCardRoot powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-751 = "Tonga Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-201 = "US Mountain Daylight 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" b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-271 = "Greenwich Daylight Time" b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-502 = "Nepal Standard Time" b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-281 = "Central Europe Daylight Time" windefender.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\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\C:\Windows\system32\,@tzres.dll,-602 = "Taipei Standard Time" b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs 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,-2391 = "Aleutian Daylight Time" b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
powershell.exeb8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exepowershell.exeb8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exeinjector.execsrss.exepid Process 2716 powershell.exe 2716 powershell.exe 400 b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe 400 b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe 4436 powershell.exe 4436 powershell.exe 4436 powershell.exe 1268 b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe 1268 b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe 1268 b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe 1268 b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe 1268 b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe 1268 b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe 1268 b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe 1268 b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe 1268 b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe 1268 b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe 3180 powershell.exe 3180 powershell.exe 2424 powershell.exe 2424 powershell.exe 1216 powershell.exe 1216 powershell.exe 1836 powershell.exe 1836 powershell.exe 1856 powershell.exe 1856 powershell.exe 388 injector.exe 388 injector.exe 388 injector.exe 388 injector.exe 388 injector.exe 388 injector.exe 3344 csrss.exe 3344 csrss.exe 388 injector.exe 388 injector.exe 388 injector.exe 388 injector.exe 388 injector.exe 388 injector.exe 3344 csrss.exe 3344 csrss.exe 388 injector.exe 388 injector.exe 3344 csrss.exe 3344 csrss.exe 388 injector.exe 388 injector.exe 388 injector.exe 388 injector.exe 388 injector.exe 388 injector.exe 388 injector.exe 388 injector.exe 388 injector.exe 388 injector.exe 388 injector.exe 388 injector.exe 388 injector.exe 388 injector.exe 388 injector.exe 388 injector.exe 388 injector.exe -
Suspicious use of AdjustPrivilegeToken 12 IoCs
Processes:
powershell.exeb8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.execsrss.exesc.exedescription pid Process Token: SeDebugPrivilege 2716 powershell.exe Token: SeDebugPrivilege 400 b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe Token: SeImpersonatePrivilege 400 b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe Token: SeDebugPrivilege 4436 powershell.exe Token: SeDebugPrivilege 3180 powershell.exe Token: SeDebugPrivilege 2424 powershell.exe Token: SeDebugPrivilege 1216 powershell.exe Token: SeDebugPrivilege 1836 powershell.exe Token: SeDebugPrivilege 1856 powershell.exe Token: SeSystemEnvironmentPrivilege 3344 csrss.exe Token: SeSecurityPrivilege 3256 sc.exe Token: SeSecurityPrivilege 3256 sc.exe -
Suspicious use of WriteProcessMemory 36 IoCs
Processes:
b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exeb8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.execmd.execsrss.exewindefender.execmd.exedescription pid Process procid_target PID 400 wrote to memory of 2716 400 b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe 88 PID 400 wrote to memory of 2716 400 b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe 88 PID 400 wrote to memory of 2716 400 b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe 88 PID 1268 wrote to memory of 4436 1268 b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe 96 PID 1268 wrote to memory of 4436 1268 b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe 96 PID 1268 wrote to memory of 4436 1268 b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe 96 PID 1268 wrote to memory of 5072 1268 b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe 100 PID 1268 wrote to memory of 5072 1268 b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe 100 PID 5072 wrote to memory of 4184 5072 cmd.exe 102 PID 5072 wrote to memory of 4184 5072 cmd.exe 102 PID 1268 wrote to memory of 3180 1268 b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe 103 PID 1268 wrote to memory of 3180 1268 b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe 103 PID 1268 wrote to memory of 3180 1268 b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe 103 PID 1268 wrote to memory of 2424 1268 b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe 106 PID 1268 wrote to memory of 2424 1268 b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe 106 PID 1268 wrote to memory of 2424 1268 b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe 106 PID 1268 wrote to memory of 3344 1268 b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe 108 PID 1268 wrote to memory of 3344 1268 b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe 108 PID 1268 wrote to memory of 3344 1268 b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe 108 PID 3344 wrote to memory of 1216 3344 csrss.exe 109 PID 3344 wrote to memory of 1216 3344 csrss.exe 109 PID 3344 wrote to memory of 1216 3344 csrss.exe 109 PID 3344 wrote to memory of 1836 3344 csrss.exe 114 PID 3344 wrote to memory of 1836 3344 csrss.exe 114 PID 3344 wrote to memory of 1836 3344 csrss.exe 114 PID 3344 wrote to memory of 1856 3344 csrss.exe 117 PID 3344 wrote to memory of 1856 3344 csrss.exe 117 PID 3344 wrote to memory of 1856 3344 csrss.exe 117 PID 3344 wrote to memory of 388 3344 csrss.exe 119 PID 3344 wrote to memory of 388 3344 csrss.exe 119 PID 5064 wrote to memory of 3632 5064 windefender.exe 127 PID 5064 wrote to memory of 3632 5064 windefender.exe 127 PID 5064 wrote to memory of 3632 5064 windefender.exe 127 PID 3632 wrote to memory of 3256 3632 cmd.exe 128 PID 3632 wrote to memory of 3256 3632 cmd.exe 128 PID 3632 wrote to memory of 3256 3632 cmd.exe 128 -
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\b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe"C:\Users\Admin\AppData\Local\Temp\b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:400 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2716
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C:\Users\Admin\AppData\Local\Temp\b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.exe"C:\Users\Admin\AppData\Local\Temp\b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df.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:1268 -
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:4436
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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:5072 -
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:4184
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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:3180
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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:2424
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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:3344 -
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:1216
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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:4404
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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:1836
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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:1856
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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:388
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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:3012
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C:\Windows\windefender.exe"C:\Windows\windefender.exe"4⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:5064 -
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:3632 -
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:3256
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C:\Windows\windefender.exeC:\Windows\windefender.exe1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4344
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
MD5c5b1478ca757ca81b7ae87744e9dbd6b
SHA1f300de14ddb3732d173dfb59b8c3d19a7a42dbb4
SHA256bd2226bf6e629a9990c10c74d869d7d72114e3b0090215cac5041bfa02bc7e20
SHA5121cb23c6c8c5e2e334c7f7be26875f9452372f3bbb8d49595e6e2837caaceec9daa42f36a99931f2b027b5ec5a4c840bb8001f478d66d566d25dbe0b4b42883ca
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD591d01167e7c8674b09edc24ddb8703d6
SHA1153d05218c47fcac37d6554edaaf01b927a4ba78
SHA256ff412b799a8995264b2caba0ba5c69ab2e2520c3d76d43fad5b39b6fb559d70f
SHA512bcb2e79333cfa7a94e30f899d876a868ca33084efb917a198d7efa97520998f3fc97752b1c8b3dbfac8d65f06ea6584fa27f618a6f042bee1f4f47330f61949c
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5200859803dc00ba6b75db0974c495e9d
SHA1ad67795bbde1ce46ba5d1c57429249174f178f20
SHA256380b71c4459b89630b09f19d07b929d70a24132672dd33b8a592352c25d3f207
SHA5127e4f102705d8ada7858c0f1a0799dea55afc0d644d75d42fa9fd68b60a42fd2c0d98ec546aaedada945a2926da86a7572fc7a4a0dfce8cf8b94a0f29f8265f64
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5b85515e05edb99c073a29c55f24afcb4
SHA1399f6e28f1cbc89a567b0d3d02a5b63cc510a7b7
SHA25629a831a5d8a6bba64f64378055071120955a554ac4cf813f982188e00e1780ab
SHA5129000c8cd482ba9de4eda75b4afab918ffadd2747ca59fc962a5bf5730a7b241386d9b5507d43852f26b966b1f04b73abe76d5cf0535e8a66b8fe304ed95ef353
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5471482c7a3a71f5637ff96db604b60ae
SHA16a6f70f8e44203b002a7b8e2822d90abb7a70c03
SHA256bb97e628929e0cf7e8eea183fefe312cffa711136c2275ab78032eeec3bc1249
SHA51215d46dd53eee8887c0c66e5e3294371c73c452a3720a9442d6aa5747e21706d77087654a6f9b0e1b42ac0e9723eaab6fc4fd944ee97b0a63918b38dde1c03423
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Filesize
4.1MB
MD5ecdfb00cfd850adbe3a723e2bcb3084e
SHA128186151e349b1a86a227235aac4db1444ee780c
SHA256b8b02f338922b4997d3173239212d26679bc231c765b870f8aab6305460d75df
SHA512a9d1bf214aae81ac090f65d81b4c0c9a815cceb9fd9a48d8e4853dcd83ba6585fa6488636734363ff37417ec5d548322312e37bec9f739374f8b81c8d0d6a835
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Filesize
2.0MB
MD58e67f58837092385dcf01e8a2b4f5783
SHA1012c49cfd8c5d06795a6f67ea2baf2a082cf8625
SHA256166ddb03ff3c89bd4525ac390067e180fdd08f10fbcf4aadb0189541673c03fa
SHA51240d8ae12663fc1851e171d9d86cea8bb12487b734c218d7b6f9742eb07d4ca265065cbd6d0bb908f8bda7e3d955c458dfe3fd13265bbf573b9351e0a2bf691ec