Analysis
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max time kernel
146s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
26-03-2023 16:13
Static task
static1
General
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Target
954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe
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Size
4.1MB
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MD5
32974cf0af5a91f8b7a3f00885a65f58
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SHA1
e40ac6047b6c5b0db2e623f992304e01f9d8b60b
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SHA256
954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e
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SHA512
19b4cae7998f93266c81e181b91d933939b992fb37667d4f7b69b945329d98d3b5e846fbd5a1454724fb676b003a90fca6fe8853c74ca10a73803062b0629d8c
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SSDEEP
98304:LAJRoLUMI2EcipwIPFl2pMJZ6FwN+3+i8fL6JVlgyihaR:8JR8UMI2EnWIPT2pMJQFKI4vP6
Malware Config
Signatures
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Glupteba payload 16 IoCs
Processes:
resource yara_rule behavioral1/memory/4764-134-0x0000000005310000-0x0000000005B87000-memory.dmp family_glupteba behavioral1/memory/4764-135-0x0000000000400000-0x0000000002F49000-memory.dmp family_glupteba behavioral1/memory/1728-139-0x0000000000400000-0x0000000002F49000-memory.dmp family_glupteba behavioral1/memory/3852-148-0x0000000000400000-0x0000000002F49000-memory.dmp family_glupteba behavioral1/memory/3852-149-0x0000000000400000-0x0000000002F49000-memory.dmp family_glupteba behavioral1/memory/3852-150-0x0000000000400000-0x0000000002F49000-memory.dmp family_glupteba behavioral1/memory/3852-151-0x0000000000400000-0x0000000002F49000-memory.dmp family_glupteba behavioral1/memory/3852-152-0x0000000000400000-0x0000000002F49000-memory.dmp family_glupteba behavioral1/memory/3852-153-0x0000000000400000-0x0000000002F49000-memory.dmp family_glupteba behavioral1/memory/3852-154-0x0000000000400000-0x0000000002F49000-memory.dmp family_glupteba behavioral1/memory/3852-155-0x0000000000400000-0x0000000002F49000-memory.dmp family_glupteba behavioral1/memory/3852-156-0x0000000000400000-0x0000000002F49000-memory.dmp family_glupteba behavioral1/memory/3852-157-0x0000000000400000-0x0000000002F49000-memory.dmp family_glupteba behavioral1/memory/3852-158-0x0000000000400000-0x0000000002F49000-memory.dmp family_glupteba behavioral1/memory/3852-159-0x0000000000400000-0x0000000002F49000-memory.dmp family_glupteba behavioral1/memory/3852-166-0x0000000000400000-0x0000000002F49000-memory.dmp family_glupteba -
Modifies Windows Firewall 1 TTPs 1 IoCs
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Executes dropped EXE 3 IoCs
Processes:
csrss.exeinjector.exef801950a962ddba14caaa44bf084b55c.exepid process 3852 csrss.exe 1304 injector.exe 1324 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/1324-165-0x0000000000400000-0x0000000000C25000-memory.dmp upx behavioral1/memory/1324-167-0x0000000000400000-0x0000000000C25000-memory.dmp upx behavioral1/memory/1324-169-0x0000000000400000-0x0000000000C25000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.execsrss.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\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:
954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exedescription ioc process File opened (read-only) \??\VBoxMiniRdrDN 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe -
Drops file in Windows directory 2 IoCs
Processes:
954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exedescription ioc process File opened for modification C:\Windows\rss 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe File created C:\Windows\rss\csrss.exe 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.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 3904 schtasks.exe 1380 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exedescription ioc process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1412 = "Syria Standard Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-402 = "Arabic Standard Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-51 = "Greenland Daylight Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-181 = "Mountain Daylight Time (Mexico)" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-391 = "Arab Daylight Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2511 = "Lord Howe Daylight Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-912 = "Mauritius Standard Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-622 = "Korea Standard Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1862 = "Russia TZ 6 Standard Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-302 = "Romance Standard Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2572 = "Turks and Caicos Standard Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.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" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-491 = "India Daylight Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-192 = "Mountain Standard Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-911 = "Mauritius Daylight Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-741 = "New Zealand Daylight Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-691 = "Tasmania Daylight Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-681 = "E. Australia Daylight Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-232 = "Hawaiian Standard Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-492 = "India Standard Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-531 = "Sri Lanka Daylight Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-731 = "Fiji Daylight Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-431 = "Iran Daylight Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2632 = "Norfolk Standard Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-241 = "Samoa Daylight Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-601 = "Taipei Daylight Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2751 = "Tomsk Daylight Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-392 = "Arab Standard Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1912 = "Russia TZ 10 Standard Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2321 = "Sakhalin Daylight Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-382 = "South Africa Standard Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-722 = "Central Pacific Standard Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2431 = "Cuba Daylight Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1891 = "Russia TZ 3 Daylight Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-335 = "Jordan Standard Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-182 = "Mountain Standard Time (Mexico)" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1502 = "Turkey Standard Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-932 = "Coordinated Universal Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2181 = "Astrakhan Daylight Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-151 = "Central America Daylight Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-732 = "Fiji Standard Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.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" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2432 = "Cuba Standard Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-791 = "SA Western Daylight Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-591 = "Malay Peninsula Daylight Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-512 = "Central Asia Standard Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-212 = "Pacific Standard Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-211 = "Pacific Daylight Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2341 = "Haiti Daylight Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-365 = "Middle East Standard Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-542 = "Myanmar Standard Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-221 = "Alaskan Daylight Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-572 = "China Standard Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2042 = "Eastern Standard Time (Mexico)" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-202 = "US Mountain Standard Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-652 = "AUS Central Standard Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-361 = "GTB Daylight Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-771 = "Montevideo Daylight Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2061 = "North Korea Daylight Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-121 = "SA Pacific Daylight Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2391 = "Aleutian Daylight Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2372 = "Easter Island Standard Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.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" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2871 = "Magallanes Daylight Time" 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exeinjector.execsrss.exepid process 4764 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe 4764 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe 1728 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe 1728 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe 1728 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe 1728 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe 1728 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe 1728 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe 1728 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe 1728 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe 1728 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe 1728 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 3852 csrss.exe 3852 csrss.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 3852 csrss.exe 3852 csrss.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe 1304 injector.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.execsrss.exedescription pid process Token: SeDebugPrivilege 4764 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Token: SeImpersonatePrivilege 4764 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe Token: SeSystemEnvironmentPrivilege 3852 csrss.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.execmd.execsrss.exedescription pid process target process PID 1728 wrote to memory of 2144 1728 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe cmd.exe PID 1728 wrote to memory of 2144 1728 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe cmd.exe PID 2144 wrote to memory of 3064 2144 cmd.exe netsh.exe PID 2144 wrote to memory of 3064 2144 cmd.exe netsh.exe PID 1728 wrote to memory of 3852 1728 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe csrss.exe PID 1728 wrote to memory of 3852 1728 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe csrss.exe PID 1728 wrote to memory of 3852 1728 954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe csrss.exe PID 3852 wrote to memory of 1304 3852 csrss.exe injector.exe PID 3852 wrote to memory of 1304 3852 csrss.exe injector.exe PID 3852 wrote to memory of 1324 3852 csrss.exe f801950a962ddba14caaa44bf084b55c.exe PID 3852 wrote to memory of 1324 3852 csrss.exe f801950a962ddba14caaa44bf084b55c.exe PID 3852 wrote to memory of 1324 3852 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\954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe"C:\Users\Admin\AppData\Local\Temp\954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.exe"C:\Users\Admin\AppData\Local\Temp\954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e.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
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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
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C:\Windows\rss\csrss.exeC:\Windows\rss\csrss.exe3⤵
- Executes dropped EXE
- Adds Run key to start application
- Manipulates WinMonFS driver.
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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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
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn "csrss" /f5⤵
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn "ScheduledUpdate" /f5⤵
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\NtQuerySystemInformationHook.dllFilesize
99KB
MD509031a062610d77d685c9934318b4170
SHA1880f744184e7774f3d14c1bb857e21cc7fe89a6d
SHA256778bd69af403df3c4e074c31b3850d71bf0e64524bea4272a802ca9520b379dd
SHA5129a276e1f0f55d35f2bf38eb093464f7065bdd30a660e6d1c62eed5e76d1fb2201567b89d9ae65d2d89dc99b142159e36fb73be8d5e08252a975d50544a7cda27
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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
MD532974cf0af5a91f8b7a3f00885a65f58
SHA1e40ac6047b6c5b0db2e623f992304e01f9d8b60b
SHA256954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e
SHA51219b4cae7998f93266c81e181b91d933939b992fb37667d4f7b69b945329d98d3b5e846fbd5a1454724fb676b003a90fca6fe8853c74ca10a73803062b0629d8c
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C:\Windows\rss\csrss.exeFilesize
4.1MB
MD532974cf0af5a91f8b7a3f00885a65f58
SHA1e40ac6047b6c5b0db2e623f992304e01f9d8b60b
SHA256954f86294597b084b342d5a2693d7b4a3c4a9f7fca412881d598fc36b027541e
SHA51219b4cae7998f93266c81e181b91d933939b992fb37667d4f7b69b945329d98d3b5e846fbd5a1454724fb676b003a90fca6fe8853c74ca10a73803062b0629d8c
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memory/1324-169-0x0000000000400000-0x0000000000C25000-memory.dmpFilesize
8.1MB
-
memory/1324-167-0x0000000000400000-0x0000000000C25000-memory.dmpFilesize
8.1MB
-
memory/1324-165-0x0000000000400000-0x0000000000C25000-memory.dmpFilesize
8.1MB
-
memory/1728-139-0x0000000000400000-0x0000000002F49000-memory.dmpFilesize
43.3MB
-
memory/3852-153-0x0000000000400000-0x0000000002F49000-memory.dmpFilesize
43.3MB
-
memory/3852-159-0x0000000000400000-0x0000000002F49000-memory.dmpFilesize
43.3MB
-
memory/3852-154-0x0000000000400000-0x0000000002F49000-memory.dmpFilesize
43.3MB
-
memory/3852-155-0x0000000000400000-0x0000000002F49000-memory.dmpFilesize
43.3MB
-
memory/3852-156-0x0000000000400000-0x0000000002F49000-memory.dmpFilesize
43.3MB
-
memory/3852-157-0x0000000000400000-0x0000000002F49000-memory.dmpFilesize
43.3MB
-
memory/3852-158-0x0000000000400000-0x0000000002F49000-memory.dmpFilesize
43.3MB
-
memory/3852-148-0x0000000000400000-0x0000000002F49000-memory.dmpFilesize
43.3MB
-
memory/3852-152-0x0000000000400000-0x0000000002F49000-memory.dmpFilesize
43.3MB
-
memory/3852-151-0x0000000000400000-0x0000000002F49000-memory.dmpFilesize
43.3MB
-
memory/3852-150-0x0000000000400000-0x0000000002F49000-memory.dmpFilesize
43.3MB
-
memory/3852-166-0x0000000000400000-0x0000000002F49000-memory.dmpFilesize
43.3MB
-
memory/3852-149-0x0000000000400000-0x0000000002F49000-memory.dmpFilesize
43.3MB
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memory/4764-134-0x0000000005310000-0x0000000005B87000-memory.dmpFilesize
8.5MB
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memory/4764-135-0x0000000000400000-0x0000000002F49000-memory.dmpFilesize
43.3MB