Analysis
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max time kernel
150s -
max time network
118s -
platform
windows10-1703_x64 -
resource
win10-20230220-en -
resource tags
arch:x64arch:x86image:win10-20230220-enlocale:en-usos:windows10-1703-x64system -
submitted
28-03-2023 00:44
Static task
static1
General
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Target
9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe
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Size
4.1MB
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MD5
c465166739228f549f778438f1b3bc45
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SHA1
1f0ce7a045c5c718e6a6e00455fdb84304246dd8
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SHA256
9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31
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SHA512
91dc221d69b1a46469564ab678779fe30bd32d6ebd689e2519af3d38efbf4add3c5b5dbe34657e3b079200bd8fc015d890eeb34585aa335c6688dd82ed5881b2
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SSDEEP
98304:chcDO7EgzRJZT3IHKMrqkJWE0LhQ6uMYKra:cO/LKQqNE0W0a
Malware Config
Signatures
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Glupteba payload 14 IoCs
Processes:
resource yara_rule behavioral1/memory/3944-121-0x00000000030F0000-0x0000000003967000-memory.dmp family_glupteba behavioral1/memory/3944-122-0x0000000000400000-0x0000000000EA2000-memory.dmp family_glupteba behavioral1/memory/3096-127-0x0000000000400000-0x0000000000EA2000-memory.dmp family_glupteba behavioral1/memory/3768-135-0x0000000000400000-0x0000000000EA2000-memory.dmp family_glupteba behavioral1/memory/3768-136-0x0000000000400000-0x0000000000EA2000-memory.dmp family_glupteba behavioral1/memory/3768-137-0x0000000000400000-0x0000000000EA2000-memory.dmp family_glupteba behavioral1/memory/3768-138-0x0000000000400000-0x0000000000EA2000-memory.dmp family_glupteba behavioral1/memory/3768-139-0x0000000000400000-0x0000000000EA2000-memory.dmp family_glupteba behavioral1/memory/3768-140-0x0000000000400000-0x0000000000EA2000-memory.dmp family_glupteba behavioral1/memory/3768-141-0x0000000000400000-0x0000000000EA2000-memory.dmp family_glupteba behavioral1/memory/3768-142-0x0000000000400000-0x0000000000EA2000-memory.dmp family_glupteba behavioral1/memory/3768-143-0x0000000000400000-0x0000000000EA2000-memory.dmp family_glupteba behavioral1/memory/3768-144-0x0000000000400000-0x0000000000EA2000-memory.dmp family_glupteba behavioral1/memory/3768-151-0x0000000000400000-0x0000000000EA2000-memory.dmp family_glupteba -
Processes:
9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe = "0" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe -
Modifies Windows Firewall 1 TTPs 1 IoCs
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Executes dropped EXE 3 IoCs
Processes:
csrss.exeinjector.exef801950a962ddba14caaa44bf084b55c.exepid process 3768 csrss.exe 4376 injector.exe 3128 f801950a962ddba14caaa44bf084b55c.exe -
Processes:
resource yara_rule C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe upx C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe upx behavioral1/memory/3128-150-0x0000000000400000-0x0000000000C25000-memory.dmp upx behavioral1/memory/3128-152-0x0000000000400000-0x0000000000C25000-memory.dmp upx -
Processes:
9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe = "0" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.execsrss.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3346939869-2835594282-3775165920-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\S-1-5-21-3346939869-2835594282-3775165920-1000\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 -
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:
9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exedescription ioc process File opened (read-only) \??\VBoxMiniRdrDN 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe -
Drops file in Windows directory 2 IoCs
Processes:
9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exedescription ioc process File opened for modification C:\Windows\rss 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe File created C:\Windows\rss\csrss.exe 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.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 1236 schtasks.exe 4144 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exenetsh.execsrss.exedescription ioc process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-111 = "Eastern Daylight Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-371 = "Jerusalem Daylight Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2752 = "Tomsk Standard Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-201 = "US Mountain Daylight Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Key created \REGISTRY\USER\.DEFAULT\System\CurrentControlSet netsh.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2001 = "Cabo Verde Daylight Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-232 = "Hawaiian Standard Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-542 = "Myanmar Standard Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2571 = "Turks and Caicos Daylight Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2392 = "Aleutian Standard Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-231 = "Hawaiian Daylight Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1861 = "Russia TZ 6 Daylight Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1911 = "Russia TZ 10 Daylight Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2062 = "North Korea Standard Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2322 = "Sakhalin Standard Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-382 = "South Africa Standard Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-132 = "US Eastern Standard Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-722 = "Central Pacific Standard Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-721 = "Central Pacific Daylight Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1841 = "Russia TZ 4 Daylight Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-502 = "Nepal Standard Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-131 = "US Eastern Daylight Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-602 = "Taipei Standard Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2612 = "Bougainville Standard Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-171 = "Central Daylight Time (Mexico)" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-182 = "Mountain Standard Time (Mexico)" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-91 = "Pacific SA Daylight Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-92 = "Pacific SA Standard Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-402 = "Arabic Standard Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2181 = "Astrakhan Daylight Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-512 = "Central Asia Standard Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-71 = "Newfoundland Daylight Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-841 = "Argentina Daylight Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-52 = "Greenland Standard Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2632 = "Norfolk Standard Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-791 = "SA Western Daylight Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2411 = "Marquesas Daylight Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1892 = "Russia TZ 3 Standard Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1021 = "Bangladesh Daylight Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1971 = "Belarus Daylight Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-281 = "Central Europe Daylight Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-432 = "Iran Standard Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-385 = "Namibia Standard Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-831 = "SA Eastern Daylight Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-561 = "SE Asia Daylight Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-442 = "Arabian Standard Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-451 = "Caucasus Daylight Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-161 = "Central Daylight Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-262 = "GMT Standard Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-104 = "Central Brazilian Daylight Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2341 = "Haiti Daylight Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2511 = "Lord Howe Daylight Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-461 = "Afghanistan Daylight Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2321 = "Sakhalin Daylight Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-932 = "Coordinated Universal Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1471 = "Magadan Daylight Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1832 = "Russia TZ 2 Standard Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\LanguageList = 65006e002d0055005300000065006e0000000000 csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-32 = "Mid-Atlantic Standard Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1411 = "Syria Daylight Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-692 = "Tasmania Standard Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1801 = "Line Islands Daylight Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-121 = "SA Pacific Daylight Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-202 = "US Mountain Standard Time" 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exeinjector.execsrss.exepid process 3944 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe 3944 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe 3096 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe 3096 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe 3096 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe 3096 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe 3096 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe 3096 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe 3096 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe 3096 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe 3096 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe 3096 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 3768 csrss.exe 3768 csrss.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 3768 csrss.exe 3768 csrss.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe 4376 injector.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.execsrss.exedescription pid process Token: SeDebugPrivilege 3944 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Token: SeImpersonatePrivilege 3944 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe Token: SeSystemEnvironmentPrivilege 3768 csrss.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.execmd.execsrss.exedescription pid process target process PID 3096 wrote to memory of 4980 3096 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe cmd.exe PID 3096 wrote to memory of 4980 3096 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe cmd.exe PID 4980 wrote to memory of 3080 4980 cmd.exe netsh.exe PID 4980 wrote to memory of 3080 4980 cmd.exe netsh.exe PID 3096 wrote to memory of 3768 3096 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe csrss.exe PID 3096 wrote to memory of 3768 3096 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe csrss.exe PID 3096 wrote to memory of 3768 3096 9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe csrss.exe PID 3768 wrote to memory of 4376 3768 csrss.exe injector.exe PID 3768 wrote to memory of 4376 3768 csrss.exe injector.exe PID 3768 wrote to memory of 3128 3768 csrss.exe f801950a962ddba14caaa44bf084b55c.exe PID 3768 wrote to memory of 3128 3768 csrss.exe f801950a962ddba14caaa44bf084b55c.exe PID 3768 wrote to memory of 3128 3768 csrss.exe f801950a962ddba14caaa44bf084b55c.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\9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe"C:\Users\Admin\AppData\Local\Temp\9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe"C:\Users\Admin\AppData\Local\Temp\9f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31.exe"2⤵
- Windows security bypass
- Windows security modification
- 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
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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
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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
- Modifies data under HKEY_USERS
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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.
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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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)
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵
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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
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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)
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C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exeC:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe4⤵
- Executes dropped EXE
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exeFilesize
3.2MB
MD5f801950a962ddba14caaa44bf084b55c
SHA17cadc9076121297428442785536ba0df2d4ae996
SHA256c3946ec89e15b24b743c46f9acacb58cff47da63f3ce2799d71ed90496b8891f
SHA5124183bc76bdc84fb779e2e573d9a63d7de47096b63b945f9e335bee95ae28eb208f5ee15f6501ac59623b97c5b77f3455ca313512e7d9803e1704ae22a52459c5
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C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exeFilesize
3.2MB
MD5f801950a962ddba14caaa44bf084b55c
SHA17cadc9076121297428442785536ba0df2d4ae996
SHA256c3946ec89e15b24b743c46f9acacb58cff47da63f3ce2799d71ed90496b8891f
SHA5124183bc76bdc84fb779e2e573d9a63d7de47096b63b945f9e335bee95ae28eb208f5ee15f6501ac59623b97c5b77f3455ca313512e7d9803e1704ae22a52459c5
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C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exeFilesize
281KB
MD5d98e33b66343e7c96158444127a117f6
SHA1bb716c5509a2bf345c6c1152f6e3e1452d39d50d
SHA2565de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1
SHA512705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5
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C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exeFilesize
281KB
MD5d98e33b66343e7c96158444127a117f6
SHA1bb716c5509a2bf345c6c1152f6e3e1452d39d50d
SHA2565de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1
SHA512705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5
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C:\Windows\rss\csrss.exeFilesize
4.1MB
MD5c465166739228f549f778438f1b3bc45
SHA11f0ce7a045c5c718e6a6e00455fdb84304246dd8
SHA2569f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31
SHA51291dc221d69b1a46469564ab678779fe30bd32d6ebd689e2519af3d38efbf4add3c5b5dbe34657e3b079200bd8fc015d890eeb34585aa335c6688dd82ed5881b2
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C:\Windows\rss\csrss.exeFilesize
4.1MB
MD5c465166739228f549f778438f1b3bc45
SHA11f0ce7a045c5c718e6a6e00455fdb84304246dd8
SHA2569f0a570f42b54613eb80949014730264a7918f826173da06c1039515e7d5ae31
SHA51291dc221d69b1a46469564ab678779fe30bd32d6ebd689e2519af3d38efbf4add3c5b5dbe34657e3b079200bd8fc015d890eeb34585aa335c6688dd82ed5881b2
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memory/3096-127-0x0000000000400000-0x0000000000EA2000-memory.dmpFilesize
10.6MB
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memory/3128-152-0x0000000000400000-0x0000000000C25000-memory.dmpFilesize
8.1MB
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memory/3128-150-0x0000000000400000-0x0000000000C25000-memory.dmpFilesize
8.1MB
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memory/3768-138-0x0000000000400000-0x0000000000EA2000-memory.dmpFilesize
10.6MB
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memory/3768-139-0x0000000000400000-0x0000000000EA2000-memory.dmpFilesize
10.6MB
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memory/3768-140-0x0000000000400000-0x0000000000EA2000-memory.dmpFilesize
10.6MB
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memory/3768-141-0x0000000000400000-0x0000000000EA2000-memory.dmpFilesize
10.6MB
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memory/3768-142-0x0000000000400000-0x0000000000EA2000-memory.dmpFilesize
10.6MB
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memory/3768-143-0x0000000000400000-0x0000000000EA2000-memory.dmpFilesize
10.6MB
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memory/3768-144-0x0000000000400000-0x0000000000EA2000-memory.dmpFilesize
10.6MB
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memory/3768-137-0x0000000000400000-0x0000000000EA2000-memory.dmpFilesize
10.6MB
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memory/3768-136-0x0000000000400000-0x0000000000EA2000-memory.dmpFilesize
10.6MB
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memory/3768-135-0x0000000000400000-0x0000000000EA2000-memory.dmpFilesize
10.6MB
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memory/3768-151-0x0000000000400000-0x0000000000EA2000-memory.dmpFilesize
10.6MB
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memory/3944-121-0x00000000030F0000-0x0000000003967000-memory.dmpFilesize
8.5MB
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memory/3944-122-0x0000000000400000-0x0000000000EA2000-memory.dmpFilesize
10.6MB