glupteba | 96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf

General

Target

96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Size

4.1MB
MD5

b31c3e535cccf20e2b17600cb38e5283
SHA1

0203fdf21ddb5a96a3cfe17844866699521caffc
SHA256

96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf
SHA512

c01856eb5f54f50442c1e470da442674024f62049bdc03d0adb57fd94edbfed0e61d78d4ba720883d9503565142f4796a757960826f43654066622bb25add786
SSDEEP

98304:GYW1Nzi8FwoPWhAPSxdRSy0Rx2cK1uMAEXQ5GUqWDYQdt2hl4667:VuEoPw+AkQuJEGG7WMQz2K

Score

10^/10

glupteba discovery dropper evasion loader persistence rootkit upx

Malware Config

Signatures

Glupteba
Glupteba is a modular loader written in Golang with various components.
loader dropper glupteba

Glupteba payload 17 IoCs

Processes:

resource	yara_rule
behavioral1/memory/368-134-0x0000000002D70000-0x00000000035E7000-memory.dmp	family_glupteba
behavioral1/memory/368-135-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/3048-142-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/1256-148-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/1256-149-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/1256-150-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/1256-151-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/1256-152-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/1256-153-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/1256-154-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/1256-155-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/1256-156-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/1256-157-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/1256-158-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/1256-159-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/1256-160-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/1256-165-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba

Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

4400 netsh.exe
Executes dropped EXE 3 IoCs

Processes:

csrss.exeinjector.exef801950a962ddba14caaa44bf084b55c.exe

pid process

1256 csrss.exe
4492 injector.exe
1292 f801950a962ddba14caaa44bf084b55c.exe

pid	process
4400	netsh.exe

pid	process
1256	csrss.exe
4492	injector.exe
1292	f801950a962ddba14caaa44bf084b55c.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe	upx
behavioral1/memory/1292-166-0x0000000000400000-0x0000000000C25000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.execsrss.exe

description	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\""	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.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.
discovery

Query Registry
T1012
Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Manipulates WinMonFS driver. 1 IoCs
Roottkits write to WinMonFS to hide directories/files from being detected.
rootkit evasion

Processes:

csrss.exe

description 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.

System Information Discovery
T1082

Processes:

96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe

description ioc process

File opened (read-only) \??\VBoxMiniRdrDN 96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe

description	ioc	process
File opened for modification	\??\WinMonFS	csrss.exe

description	ioc	process
File opened (read-only)	\??\VBoxMiniRdrDN	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe

Drops file in Windows directory 2 IoCs

Processes:

96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe

description	ioc	process
File created	C:\Windows\rss\csrss.exe	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
File opened for modification	C:\Windows\rss	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe

Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exeschtasks.exe

pid process

968 schtasks.exe
1792 schtasks.exe

pid	process
968	schtasks.exe
1792	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

Processes:

96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.execsrss.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-661 = "Cen. Australia Daylight Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-682 = "E. Australia Standard Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2451 = "Saint Pierre Daylight Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-561 = "SE Asia Daylight Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-392 = "Arab Standard Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-452 = "Caucasus Standard Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-292 = "Central European Standard Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-334 = "Jordan Daylight Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2061 = "North Korea Daylight Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-382 = "South Africa Standard Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-932 = "Coordinated Universal Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-842 = "Argentina Standard Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1661 = "Bahia Daylight Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-272 = "Greenwich Standard Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-214 = "Pacific Daylight Time (Mexico)"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-302 = "Romance Standard Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-751 = "Tonga Daylight Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2491 = "Aus Central W. Daylight Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1821 = "Russia TZ 1 Daylight Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2631 = "Norfolk Daylight Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-792 = "SA Western Standard Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2892 = "Sudan Standard Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-831 = "SA Eastern Daylight Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-242 = "Samoa Standard Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-252 = "Dateline Standard Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-112 = "Eastern Standard Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-212 = "Pacific Standard Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2042 = "Eastern Standard Time (Mexico)"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-372 = "Jerusalem Standard Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-335 = "Jordan Standard Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-982 = "Kamchatka Standard Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-912 = "Mauritius Standard Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1931 = "Russia TZ 11 Daylight Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-3142 = "South Sudan Standard Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-172 = "Central Standard Time (Mexico)"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-385 = "Namibia Standard Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-741 = "New Zealand Daylight Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-121 = "SA Pacific Daylight Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-171 = "Central Daylight Time (Mexico)"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-411 = "E. Africa Daylight Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2371 = "Easter Island Daylight Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-622 = "Korea Standard Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1501 = "Turkey Daylight Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-442 = "Arabian Standard Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-41 = "E. South America Daylight Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-32 = "Mid-Atlantic Standard Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-365 = "Middle East Standard Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2791 = "Novosibirsk Daylight Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-71 = "Newfoundland Daylight Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-215 = "Pacific Standard Time (Mexico)"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2871 = "Magallanes Daylight Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.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"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2142 = "Transbaikal Standard Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2492 = "Aus Central W. Standard Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-251 = "Dateline Daylight Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-91 = "Pacific SA Daylight Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1502 = "Turkey Standard Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2391 = "Aleutian Daylight Time"	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exeinjector.execsrss.exe

pid	process
368	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
368	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
3048	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
3048	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
3048	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
3048	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
3048	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
3048	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
3048	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
3048	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
3048	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
3048	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
1256	csrss.exe
1256	csrss.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
1256	csrss.exe
1256	csrss.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe
4492	injector.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.execsrss.exe

description	pid	process
Token: SeDebugPrivilege	368	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Token: SeImpersonatePrivilege	368	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
Token: SeSystemEnvironmentPrivilege	1256	csrss.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.execmd.execsrss.exe

description	pid	process	target process
PID 3048 wrote to memory of 2372	3048	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe	cmd.exe
PID 3048 wrote to memory of 2372	3048	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe	cmd.exe
PID 2372 wrote to memory of 4400	2372	cmd.exe	netsh.exe
PID 2372 wrote to memory of 4400	2372	cmd.exe	netsh.exe
PID 3048 wrote to memory of 1256	3048	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe	csrss.exe
PID 3048 wrote to memory of 1256	3048	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe	csrss.exe
PID 3048 wrote to memory of 1256	3048	96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe	csrss.exe
PID 1256 wrote to memory of 4492	1256	csrss.exe	injector.exe
PID 1256 wrote to memory of 4492	1256	csrss.exe	injector.exe
PID 1256 wrote to memory of 1292	1256	csrss.exe	f801950a962ddba14caaa44bf084b55c.exe
PID 1256 wrote to memory of 1292	1256	csrss.exe	f801950a962ddba14caaa44bf084b55c.exe
PID 1256 wrote to memory of 1292	1256	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.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
"C:\Users\Admin\AppData\Local\Temp\96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:368

C:\Users\Admin\AppData\Local\Temp\96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.exe
"C:\Users\Admin\AppData\Local\Temp\96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf.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:3048

C:\Windows\system32\cmd.exe
C:\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:2372

C:\Windows\system32\netsh.exe
netsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes
4⤵
- Modifies Windows Firewall
PID:4400

C:\Windows\rss\csrss.exe
C:\Windows\rss\csrss.exe
3⤵
- 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
PID:1256

C:\Windows\SYSTEM32\schtasks.exe
schtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F
4⤵
- Creates scheduled task(s)
PID:968

C:\Windows\SYSTEM32\schtasks.exe
schtasks /delete /tn ScheduledUpdate /f
4⤵
PID:4284

C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe
C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe taskmgr.exe C:\Users\Admin\AppData\Local\Temp\csrss\injector\NtQuerySystemInformationHook.dll
4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:4492

C:\Windows\SYSTEM32\schtasks.exe
schtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F
4⤵
- Creates scheduled task(s)
PID:1792

C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe
C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe
4⤵
- Executes dropped EXE
PID:1292

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1

T1102

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe
Filesize
3.2MB

MD5
f801950a962ddba14caaa44bf084b55c

SHA1
7cadc9076121297428442785536ba0df2d4ae996

SHA256
c3946ec89e15b24b743c46f9acacb58cff47da63f3ce2799d71ed90496b8891f

SHA512
4183bc76bdc84fb779e2e573d9a63d7de47096b63b945f9e335bee95ae28eb208f5ee15f6501ac59623b97c5b77f3455ca313512e7d9803e1704ae22a52459c5

Download Submit
C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe
Filesize
281KB

MD5
d98e33b66343e7c96158444127a117f6

SHA1
bb716c5509a2bf345c6c1152f6e3e1452d39d50d

SHA256
5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1

SHA512
705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5

Download Submit
C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe
Filesize
281KB

MD5
d98e33b66343e7c96158444127a117f6

SHA1
bb716c5509a2bf345c6c1152f6e3e1452d39d50d

SHA256
5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1

SHA512
705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5

Download Submit
C:\Windows\rss\csrss.exe
Filesize
4.1MB

MD5
b31c3e535cccf20e2b17600cb38e5283

SHA1
0203fdf21ddb5a96a3cfe17844866699521caffc

SHA256
96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf

SHA512
c01856eb5f54f50442c1e470da442674024f62049bdc03d0adb57fd94edbfed0e61d78d4ba720883d9503565142f4796a757960826f43654066622bb25add786

Download Submit
C:\Windows\rss\csrss.exe
Filesize
4.1MB

MD5
b31c3e535cccf20e2b17600cb38e5283

SHA1
0203fdf21ddb5a96a3cfe17844866699521caffc

SHA256
96f5c52b7ae1c11b4da0cd8ba4a021376ab67b7d46f9772f94efa4955185d3bf

SHA512
c01856eb5f54f50442c1e470da442674024f62049bdc03d0adb57fd94edbfed0e61d78d4ba720883d9503565142f4796a757960826f43654066622bb25add786

Download Submit
memory/368-134-0x0000000002D70000-0x00000000035E7000-memory.dmp

Filesize
8.5MB

Download
memory/368-135-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/1256-151-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/1256-155-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/1256-150-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/1256-148-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/1256-152-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/1256-153-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/1256-154-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/1256-149-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/1256-156-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/1256-157-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/1256-158-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/1256-159-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/1256-160-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/1256-165-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/1292-166-0x0000000000400000-0x0000000000C25000-memory.dmp

Filesize
8.1MB

Download
memory/3048-142-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads