glupteba | 899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a

General

Target

899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Size

4.1MB
MD5

688f87ac4126b8b95f8d182acfb54a0a
SHA1

194fcf7c6975f861792a16dc5820c1b76a426aa4
SHA256

899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a
SHA512

28b59efcb21bc48a04a877d88d4d9df10c7f1d5b0bed85396695f4399b6054c12f96ca3ae163f7b890931fee94dca9a00fa2406bfd2ac64305332679d0aaa99d
SSDEEP

98304:a4LaDeNSuyCmO874np0mdKzD7v784No7HRz4M8yO6ABNu:rL2eNS5OY4nlKD7v78uorR07y

Score

10^/10

glupteba discovery dropper evasion loader persistence rootkit

Malware Config

Signatures

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

Glupteba payload 18 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1656-134-0x0000000005130000-0x00000000059A7000-memory.dmp	family_glupteba
behavioral1/memory/1656-135-0x0000000000400000-0x0000000002F4E000-memory.dmp	family_glupteba
behavioral1/memory/228-141-0x0000000000400000-0x0000000002F4E000-memory.dmp	family_glupteba
behavioral1/memory/2076-143-0x0000000005600000-0x0000000005E77000-memory.dmp	family_glupteba
behavioral1/memory/2076-149-0x0000000000400000-0x0000000002F4E000-memory.dmp	family_glupteba
behavioral1/memory/2076-150-0x0000000000400000-0x0000000002F4E000-memory.dmp	family_glupteba
behavioral1/memory/2076-151-0x0000000000400000-0x0000000002F4E000-memory.dmp	family_glupteba
behavioral1/memory/2076-152-0x0000000000400000-0x0000000002F4E000-memory.dmp	family_glupteba
behavioral1/memory/2076-153-0x0000000000400000-0x0000000002F4E000-memory.dmp	family_glupteba
behavioral1/memory/2076-154-0x0000000000400000-0x0000000002F4E000-memory.dmp	family_glupteba
behavioral1/memory/2076-155-0x0000000000400000-0x0000000002F4E000-memory.dmp	family_glupteba
behavioral1/memory/2076-156-0x0000000000400000-0x0000000002F4E000-memory.dmp	family_glupteba
behavioral1/memory/2076-157-0x0000000000400000-0x0000000002F4E000-memory.dmp	family_glupteba
behavioral1/memory/2076-158-0x0000000000400000-0x0000000002F4E000-memory.dmp	family_glupteba
behavioral1/memory/2076-159-0x0000000000400000-0x0000000002F4E000-memory.dmp	family_glupteba
behavioral1/memory/2076-160-0x0000000000400000-0x0000000002F4E000-memory.dmp	family_glupteba
behavioral1/memory/2076-161-0x0000000000400000-0x0000000002F4E000-memory.dmp	family_glupteba
behavioral1/memory/2076-162-0x0000000000400000-0x0000000002F4E000-memory.dmp	family_glupteba

Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

4588 netsh.exe
Executes dropped EXE 2 IoCs

Processes:

csrss.exeinjector.exe

pid process

2076 csrss.exe
5020 injector.exe

pid	process
4588	netsh.exe

pid	process
2076	csrss.exe
5020	injector.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.execsrss.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\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
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:

899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe

description ioc process

File opened (read-only) \??\VBoxMiniRdrDN 899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe

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

description	ioc	process
File opened (read-only)	\??\VBoxMiniRdrDN	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe

Drops file in Windows directory 2 IoCs

Processes:

899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe

description	ioc	process
File opened for modification	C:\Windows\rss	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
File created	C:\Windows\rss\csrss.exe	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1320 228 WerFault.exe 899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.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

1124 schtasks.exe
4944 schtasks.exe

pid	pid_target	process	target process
1320	228	WerFault.exe	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe

pid	process
1124	schtasks.exe
4944	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

Processes:

899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2611 = "Bougainville Daylight Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-231 = "Hawaiian Daylight Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2872 = "Magallanes Standard Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-384 = "Namibia Daylight Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-252 = "Dateline Standard Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-891 = "Morocco Daylight Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-212 = "Pacific Standard Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-792 = "SA Western Standard Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-461 = "Afghanistan Daylight Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2001 = "Cabo Verde Daylight Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-104 = "Central Brazilian Daylight Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-335 = "Jordan Standard Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-561 = "SE Asia Daylight Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-11 = "Azores Daylight Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-962 = "Paraguay Standard Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-435 = "Georgian Standard Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-981 = "Kamchatka Daylight Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2871 = "Magallanes Daylight Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.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"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-691 = "Tasmania Daylight Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2592 = "Tocantins Standard Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-222 = "Alaskan Standard Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.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"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-511 = "Central Asia Daylight Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-52 = "Greenland Standard Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-192 = "Mountain Standard Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.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"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2891 = "Sudan Daylight Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2042 = "Eastern Standard Time (Mexico)"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-262 = "GMT Standard Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-72 = "Newfoundland Standard Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2772 = "Omsk Standard Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-302 = "Romance Standard Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.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"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-441 = "Arabian Daylight Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-651 = "AUS Central Daylight Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-3141 = "South Sudan Daylight Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-832 = "SA Eastern Standard Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2182 = "Astrakhan Standard Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-142 = "Canada Central Standard Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2371 = "Easter Island Daylight Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-431 = "Iran Daylight Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-772 = "Montevideo Standard Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-872 = "Pakistan Standard Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-462 = "Afghanistan Standard Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-572 = "China Standard Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-51 = "Greenland Daylight Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1801 = "Line Islands Daylight Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2892 = "Sudan Standard Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-931 = "Coordinated Universal Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.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"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-12 = "Azores Standard Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-162 = "Central Standard Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1501 = "Turkey Daylight Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2162 = "Altai Standard Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-392 = "Arab Standard Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1662 = "Bahia Standard Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2771 = "Omsk Daylight Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-682 = "E. Australia Standard Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-434 = "Georgian Daylight Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-261 = "GMT Daylight Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-911 = "Mauritius Daylight Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2322 = "Sakhalin Standard Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-281 = "Central Europe Daylight Time"	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exeinjector.execsrss.exe

pid	process
1656	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
1656	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
228	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
228	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
228	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
228	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
228	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
228	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
228	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
228	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
228	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
228	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
2076	csrss.exe
2076	csrss.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
2076	csrss.exe
2076	csrss.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe
5020	injector.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.execsrss.exe

description	pid	process
Token: SeDebugPrivilege	1656	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Token: SeImpersonatePrivilege	1656	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
Token: SeSystemEnvironmentPrivilege	2076	csrss.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.execmd.execsrss.exe

description	pid	process	target process
PID 228 wrote to memory of 4076	228	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe	cmd.exe
PID 228 wrote to memory of 4076	228	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe	cmd.exe
PID 4076 wrote to memory of 4588	4076	cmd.exe	netsh.exe
PID 4076 wrote to memory of 4588	4076	cmd.exe	netsh.exe
PID 228 wrote to memory of 2076	228	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe	csrss.exe
PID 228 wrote to memory of 2076	228	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe	csrss.exe
PID 228 wrote to memory of 2076	228	899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe	csrss.exe
PID 2076 wrote to memory of 5020	2076	csrss.exe	injector.exe
PID 2076 wrote to memory of 5020	2076	csrss.exe	injector.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\899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
"C:\Users\Admin\AppData\Local\Temp\899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1656

C:\Users\Admin\AppData\Local\Temp\899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.exe
"C:\Users\Admin\AppData\Local\Temp\899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a.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:228

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:4076

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:4588

C:\Windows\rss\csrss.exe
C:\Windows\rss\csrss.exe
3⤵
- Executes dropped EXE
- Adds Run key to start application
- Manipulates WinMonFS driver.
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2076

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:1124

C:\Windows\SYSTEM32\schtasks.exe
schtasks /delete /tn ScheduledUpdate /f
4⤵
PID:3628

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:5020

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:4944

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 228 -s 896
3⤵
- Program crash
PID:1320

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 228 -ip 228
1⤵
PID:4460

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

Impact

Replay Monitor

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Downloads

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
688f87ac4126b8b95f8d182acfb54a0a

SHA1
194fcf7c6975f861792a16dc5820c1b76a426aa4

SHA256
899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a

SHA512
28b59efcb21bc48a04a877d88d4d9df10c7f1d5b0bed85396695f4399b6054c12f96ca3ae163f7b890931fee94dca9a00fa2406bfd2ac64305332679d0aaa99d

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

MD5
688f87ac4126b8b95f8d182acfb54a0a

SHA1
194fcf7c6975f861792a16dc5820c1b76a426aa4

SHA256
899560302787f2199b72e93c74ea7d8de93e216da5fd1a631094d9b12691868a

SHA512
28b59efcb21bc48a04a877d88d4d9df10c7f1d5b0bed85396695f4399b6054c12f96ca3ae163f7b890931fee94dca9a00fa2406bfd2ac64305332679d0aaa99d

Download Submit
memory/228-141-0x0000000000400000-0x0000000002F4E000-memory.dmp

Filesize
43.3MB

Download
memory/1656-135-0x0000000000400000-0x0000000002F4E000-memory.dmp

Filesize
43.3MB

Download
memory/1656-134-0x0000000005130000-0x00000000059A7000-memory.dmp

Filesize
8.5MB

Download
memory/2076-151-0x0000000000400000-0x0000000002F4E000-memory.dmp

Filesize
43.3MB

Download
memory/2076-155-0x0000000000400000-0x0000000002F4E000-memory.dmp

Filesize
43.3MB

Download
memory/2076-150-0x0000000000400000-0x0000000002F4E000-memory.dmp

Filesize
43.3MB

Download
memory/2076-143-0x0000000005600000-0x0000000005E77000-memory.dmp

Filesize
8.5MB

Download
memory/2076-152-0x0000000000400000-0x0000000002F4E000-memory.dmp

Filesize
43.3MB

Download
memory/2076-153-0x0000000000400000-0x0000000002F4E000-memory.dmp

Filesize
43.3MB

Download
memory/2076-154-0x0000000000400000-0x0000000002F4E000-memory.dmp

Filesize
43.3MB

Download
memory/2076-149-0x0000000000400000-0x0000000002F4E000-memory.dmp

Filesize
43.3MB

Download
memory/2076-156-0x0000000000400000-0x0000000002F4E000-memory.dmp

Filesize
43.3MB

Download
memory/2076-157-0x0000000000400000-0x0000000002F4E000-memory.dmp

Filesize
43.3MB

Download
memory/2076-158-0x0000000000400000-0x0000000002F4E000-memory.dmp

Filesize
43.3MB

Download
memory/2076-159-0x0000000000400000-0x0000000002F4E000-memory.dmp

Filesize
43.3MB

Download
memory/2076-160-0x0000000000400000-0x0000000002F4E000-memory.dmp

Filesize
43.3MB

Download
memory/2076-161-0x0000000000400000-0x0000000002F4E000-memory.dmp

Filesize
43.3MB

Download
memory/2076-162-0x0000000000400000-0x0000000002F4E000-memory.dmp

Filesize
43.3MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads