glupteba | 91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6

Analysis

max time kernel
149s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
29-12-2024 09:29

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General

Target

JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Size

4.1MB
MD5

974c9c737f9afec2c56e72ef5275f134
SHA1

be1af788b1d6bf2b291172cdc3d513b9f8f857c7
SHA256

91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6
SHA512

3dc3495a43864d7a4d7060971f33fd25fba58ee8a611fe5ba9d5847a6ce7c83a8566b0b3d55ff9df39cb7799d0333eb0f739616042bb96544c122ff4629bcee0
SSDEEP

98304:ZpeJaCQOfeLeOGcX2OjSNHJxjDx3yHp6mmKY4BLWd6h93lj2u:TineLe7ItSJFy8sLWd6HIu

Score

10^/10

glupteba discovery dropper evasion loader persistence privilege_escalation rootkit

Malware Config

Signatures

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

Glupteba payload 19 IoCs

resource	yara_rule
behavioral2/memory/2184-2-0x0000000005040000-0x00000000058B7000-memory.dmp	family_glupteba
behavioral2/memory/2184-3-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral2/memory/2184-6-0x0000000005040000-0x00000000058B7000-memory.dmp	family_glupteba
behavioral2/memory/2184-7-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral2/memory/2184-5-0x0000000000400000-0x0000000003014000-memory.dmp	family_glupteba
behavioral2/memory/4748-12-0x0000000000400000-0x0000000003014000-memory.dmp	family_glupteba
behavioral2/memory/3936-20-0x0000000000400000-0x0000000003014000-memory.dmp	family_glupteba
behavioral2/memory/3936-21-0x0000000000400000-0x0000000003014000-memory.dmp	family_glupteba
behavioral2/memory/3936-22-0x0000000000400000-0x0000000003014000-memory.dmp	family_glupteba
behavioral2/memory/3936-23-0x0000000000400000-0x0000000003014000-memory.dmp	family_glupteba
behavioral2/memory/3936-24-0x0000000000400000-0x0000000003014000-memory.dmp	family_glupteba
behavioral2/memory/3936-25-0x0000000000400000-0x0000000003014000-memory.dmp	family_glupteba
behavioral2/memory/3936-26-0x0000000000400000-0x0000000003014000-memory.dmp	family_glupteba
behavioral2/memory/3936-27-0x0000000000400000-0x0000000003014000-memory.dmp	family_glupteba
behavioral2/memory/3936-28-0x0000000000400000-0x0000000003014000-memory.dmp	family_glupteba
behavioral2/memory/3936-29-0x0000000000400000-0x0000000003014000-memory.dmp	family_glupteba
behavioral2/memory/3936-30-0x0000000000400000-0x0000000003014000-memory.dmp	family_glupteba
behavioral2/memory/3936-31-0x0000000000400000-0x0000000003014000-memory.dmp	family_glupteba
behavioral2/memory/3936-32-0x0000000000400000-0x0000000003014000-memory.dmp	family_glupteba

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
3864	netsh.exe

Executes dropped EXE 2 IoCs

pid	Process
3936	csrss.exe
5084	injector.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\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 2 IoCs

Web Service

T1102

flow	ioc
53	raw.githubusercontent.com
54	raw.githubusercontent.com

Manipulates WinMonFS driver. 1 IoCs

Roottkits write to WinMonFS to hide directories/files from being detected.

rootkit evasion

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

description	ioc	Process
File opened (read-only)	\??\VBoxMiniRdrDN	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\rss	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
File created	C:\Windows\rss\csrss.exe	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrss.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-752 = "Tonga Standard Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1042 = "Ulaanbaatar Standard Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-652 = "AUS Central Standard Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1662 = "Bahia Standard Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-271 = "Greenwich Daylight Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-211 = "Pacific Daylight Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-602 = "Taipei Standard Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-334 = "Jordan Daylight Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1971 = "Belarus Daylight Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-541 = "Myanmar Daylight Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1862 = "Russia TZ 6 Standard Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-932 = "Coordinated Universal Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2001 = "Cabo Verde Daylight Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-151 = "Central America Daylight Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-981 = "Kamchatka Daylight Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-542 = "Myanmar Standard Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-392 = "Arab Standard Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1871 = "Russia TZ 7 Daylight Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-682 = "E. Australia Standard Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2062 = "North Korea Standard Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-722 = "Central Pacific Standard Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2431 = "Cuba Daylight Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-332 = "E. Europe Standard Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2371 = "Easter Island Daylight Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1842 = "Russia TZ 4 Standard Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-161 = "Central Daylight Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-92 = "Pacific SA Standard Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-631 = "Tokyo Daylight Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1041 = "Ulaanbaatar Daylight Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-202 = "US Mountain Standard Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-365 = "Middle East Standard Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-742 = "New Zealand Standard Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-142 = "Canada Central Standard Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-141 = "Canada Central Daylight Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-291 = "Central European Daylight Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-681 = "E. Australia Daylight Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-651 = "AUS Central Daylight Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-772 = "Montevideo Standard Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-462 = "Afghanistan Standard Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-331 = "E. Europe Daylight Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-3052 = "Qyzylorda Standard Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-132 = "US Eastern Standard Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-172 = "Central Standard Time (Mexico)"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-381 = "South Africa Daylight Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-3141 = "South Sudan Daylight Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1501 = "Turkey Daylight Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-42 = "E. South America Standard Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1722 = "Libya Standard Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.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\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-962 = "Paraguay Standard Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-592 = "Malay Peninsula Standard Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1472 = "Magadan Standard Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-121 = "SA Pacific Daylight Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2941 = "Sao Tome Daylight Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-402 = "Arabic Standard Time"	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
3088	schtasks.exe
2684	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2184	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
2184	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
4748	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
4748	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
4748	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
4748	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
4748	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
4748	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
4748	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
4748	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
4748	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
4748	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
3936	csrss.exe
5084	injector.exe
3936	csrss.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
3936	csrss.exe
3936	csrss.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe
5084	injector.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2184	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Token: SeImpersonatePrivilege	2184	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
Token: SeSystemEnvironmentPrivilege	3936	csrss.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4748 wrote to memory of 3100	4748	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe	89
PID 4748 wrote to memory of 3100	4748	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe	89
PID 3100 wrote to memory of 3864	3100	cmd.exe	92
PID 3100 wrote to memory of 3864	3100	cmd.exe	92
PID 4748 wrote to memory of 3936	4748	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe	94
PID 4748 wrote to memory of 3936	4748	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe	94
PID 4748 wrote to memory of 3936	4748	JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe	94
PID 3936 wrote to memory of 5084	3936	csrss.exe	103
PID 3936 wrote to memory of 5084	3936	csrss.exe	103

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\JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2184
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6.exe"
  2⤵
  - Adds Run key to start application
  - Checks for VirtualBox DLLs, possible anti-VM trick
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Modifies data under HKEY_USERS
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4748
- - 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:3100
  - - 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
      Event Triggered Execution: Netsh Helper DLL
      PID:3864
- - C:\Windows\rss\csrss.exe
    C:\Windows\rss\csrss.exe
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Manipulates WinMonFS driver.
    - System Location Discovery: System Language Discovery
    - Modifies data under HKEY_USERS
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3936
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:3088
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:644
  - - 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:5084
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:2684

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

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:\Windows\rss\csrss.exe

Filesize
4.1MB

MD5
974c9c737f9afec2c56e72ef5275f134

SHA1
be1af788b1d6bf2b291172cdc3d513b9f8f857c7

SHA256
91dd535f7594c2c9f4638cba7be27a6e0256760475441bf18178c22fb6fbc4b6

SHA512
3dc3495a43864d7a4d7060971f33fd25fba58ee8a611fe5ba9d5847a6ce7c83a8566b0b3d55ff9df39cb7799d0333eb0f739616042bb96544c122ff4629bcee0

Download Submit
memory/2184-2-0x0000000005040000-0x00000000058B7000-memory.dmp

Filesize
8.5MB

Download
memory/2184-3-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2184-6-0x0000000005040000-0x00000000058B7000-memory.dmp

Filesize
8.5MB

Download
memory/2184-7-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2184-5-0x0000000000400000-0x0000000003014000-memory.dmp

Filesize
44.1MB

Download
memory/2184-1-0x0000000003270000-0x000000000365B000-memory.dmp

Filesize
3.9MB

Download
memory/3936-20-0x0000000000400000-0x0000000003014000-memory.dmp

Filesize
44.1MB

Download
memory/3936-25-0x0000000000400000-0x0000000003014000-memory.dmp

Filesize
44.1MB

Download
memory/3936-32-0x0000000000400000-0x0000000003014000-memory.dmp

Filesize
44.1MB

Download
memory/3936-21-0x0000000000400000-0x0000000003014000-memory.dmp

Filesize
44.1MB

Download
memory/3936-22-0x0000000000400000-0x0000000003014000-memory.dmp

Filesize
44.1MB

Download
memory/3936-23-0x0000000000400000-0x0000000003014000-memory.dmp

Filesize
44.1MB

Download
memory/3936-24-0x0000000000400000-0x0000000003014000-memory.dmp

Filesize
44.1MB

Download
memory/3936-31-0x0000000000400000-0x0000000003014000-memory.dmp

Filesize
44.1MB

Download
memory/3936-26-0x0000000000400000-0x0000000003014000-memory.dmp

Filesize
44.1MB

Download
memory/3936-27-0x0000000000400000-0x0000000003014000-memory.dmp

Filesize
44.1MB

Download
memory/3936-28-0x0000000000400000-0x0000000003014000-memory.dmp

Filesize
44.1MB

Download
memory/3936-29-0x0000000000400000-0x0000000003014000-memory.dmp

Filesize
44.1MB

Download
memory/3936-30-0x0000000000400000-0x0000000003014000-memory.dmp

Filesize
44.1MB

Download
memory/4748-12-0x0000000000400000-0x0000000003014000-memory.dmp

Filesize
44.1MB

Download
memory/4748-8-0x0000000000400000-0x0000000003014000-memory.dmp

Filesize
44.1MB

Download