glupteba | 26a65aa0e5d7c739892c48cea02f44ee26260a239d043ec12a055f063306814a

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
23-12-2024 18:36

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General

Target

JaffaCakes118_26a65aa0e5d7c739892c48cea02f44ee26260a239d043ec12a055f063306814a.exe
Size

4.2MB
MD5

e23fd7bf9a33361915102817749fd480
SHA1

5625e757fbfe8e555cb33ccb752b25eb93cba144
SHA256

26a65aa0e5d7c739892c48cea02f44ee26260a239d043ec12a055f063306814a
SHA512

da621425e3987b028520efdff6dea7cebab9a02c6185b06056dc5df7aac7058d35989e56bf2e1bf3465249fcea6c3742715713b404bd4671dcb90c59bcc36ae1
SSDEEP

98304:iK0aDa8rBdN8pzAQzPoWStomErjBqoDuf5URO:iK0Ia8NPatPplpjBD2

Score

10^/10

glupteba metasploit backdoor discovery dropper evasion loader persistence privilege_escalation rootkit trojan

Malware Config

Extracted

Family

metasploit

Version

windows/single_exec

Signatures

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

Glupteba payload 20 IoCs

resource	yara_rule
behavioral2/memory/4952-1-0x0000000005770000-0x0000000006012000-memory.dmp	family_glupteba
behavioral2/memory/4952-2-0x0000000000400000-0x0000000000CBD000-memory.dmp	family_glupteba
behavioral2/memory/4952-5-0x0000000005770000-0x0000000006012000-memory.dmp	family_glupteba
behavioral2/memory/4952-6-0x0000000000400000-0x0000000000CBD000-memory.dmp	family_glupteba
behavioral2/memory/4952-3-0x0000000000400000-0x0000000002F6A000-memory.dmp	family_glupteba
behavioral2/memory/3788-10-0x0000000000400000-0x0000000002F6A000-memory.dmp	family_glupteba
behavioral2/memory/3396-12-0x0000000000400000-0x0000000002F6A000-memory.dmp	family_glupteba
behavioral2/memory/3396-18-0x0000000000400000-0x0000000002F6A000-memory.dmp	family_glupteba
behavioral2/memory/3396-19-0x0000000000400000-0x0000000002F6A000-memory.dmp	family_glupteba
behavioral2/memory/3396-20-0x0000000000400000-0x0000000002F6A000-memory.dmp	family_glupteba
behavioral2/memory/3396-21-0x0000000000400000-0x0000000002F6A000-memory.dmp	family_glupteba
behavioral2/memory/3396-22-0x0000000000400000-0x0000000002F6A000-memory.dmp	family_glupteba
behavioral2/memory/3396-23-0x0000000000400000-0x0000000002F6A000-memory.dmp	family_glupteba
behavioral2/memory/3396-24-0x0000000000400000-0x0000000002F6A000-memory.dmp	family_glupteba
behavioral2/memory/3396-25-0x0000000000400000-0x0000000002F6A000-memory.dmp	family_glupteba
behavioral2/memory/3396-26-0x0000000000400000-0x0000000002F6A000-memory.dmp	family_glupteba
behavioral2/memory/3396-27-0x0000000000400000-0x0000000002F6A000-memory.dmp	family_glupteba
behavioral2/memory/3396-28-0x0000000000400000-0x0000000002F6A000-memory.dmp	family_glupteba
behavioral2/memory/3396-29-0x0000000000400000-0x0000000002F6A000-memory.dmp	family_glupteba
behavioral2/memory/3396-30-0x0000000000400000-0x0000000002F6A000-memory.dmp	family_glupteba

MetaSploit
Detected malicious payload which is part of the Metasploit Framework, likely generated with msfvenom or similar.
trojan backdoor metasploit
Metasploit family
metasploit

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
1444	netsh.exe

Executes dropped EXE 2 IoCs

pid	Process
3396	csrss.exe
4352	injector.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ThrobbingFire = "\"C:\\Windows\\rss\\csrss.exe\""	JaffaCakes118_26a65aa0e5d7c739892c48cea02f44ee26260a239d043ec12a055f063306814a.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
52	raw.githubusercontent.com
53	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_26a65aa0e5d7c739892c48cea02f44ee26260a239d043ec12a055f063306814a.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\rss	JaffaCakes118_26a65aa0e5d7c739892c48cea02f44ee26260a239d043ec12a055f063306814a.exe
File created	C:\Windows\rss\csrss.exe	JaffaCakes118_26a65aa0e5d7c739892c48cea02f44ee26260a239d043ec12a055f063306814a.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_26a65aa0e5d7c739892c48cea02f44ee26260a239d043ec12a055f063306814a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_26a65aa0e5d7c739892c48cea02f44ee26260a239d043ec12a055f063306814a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrss.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,-572 = "China Standard Time"	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1891 = "Russia TZ 3 Daylight Time"	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\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)"	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-112 = "Eastern Standard Time"	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-111 = "Eastern Daylight Time"	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2342 = "Haiti Standard Time"	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1822 = "Russia TZ 1 Standard Time"	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-621 = "Korea Daylight Time"	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-364 = "Middle East Daylight Time"	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1931 = "Russia TZ 11 Daylight Time"	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-512 = "Central Asia Standard Time"	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-435 = "Georgian Standard Time"	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-982 = "Kamchatka Standard Time"	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-392 = "Arab Standard Time"	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1021 = "Bangladesh Daylight Time"	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-351 = "FLE Daylight Time"	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-372 = "Jerusalem Standard Time"	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2161 = "Altai Daylight Time"	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-222 = "Alaskan Standard Time"	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2612 = "Bougainville Standard Time"	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-411 = "E. Africa Daylight Time"	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1722 = "Libya Standard Time"	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-891 = "Morocco Daylight Time"	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1932 = "Russia TZ 11 Standard Time"	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-382 = "South Africa Standard Time"	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-632 = "Tokyo Standard Time"	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-232 = "Hawaiian Standard Time"	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2872 = "Magallanes Standard Time"	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-562 = "SE Asia Standard Time"	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2162 = "Altai Standard Time"	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1972 = "Belarus Standard Time"	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2532 = "Chatham Islands Standard Time"	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-751 = "Tonga Daylight Time"	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1041 = "Ulaanbaatar Daylight Time"	csrss.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,-671 = "AUS Eastern Daylight Time"	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1801 = "Line Islands Daylight Time"	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-752 = "Tonga Standard Time"	csrss.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,-241 = "Samoa Daylight Time"	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-532 = "Sri Lanka Standard Time"	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-601 = "Taipei Daylight Time"	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-291 = "Central European Daylight Time"	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-214 = "Pacific Daylight Time (Mexico)"	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	csrss.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,-2771 = "Omsk Daylight Time"	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-431 = "Iran Daylight Time"	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2512 = "Lord Howe Standard Time"	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-501 = "Nepal Daylight Time"	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2141 = "Transbaikal Daylight Time"	csrss.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,-2571 = "Turks and Caicos Daylight Time"	csrss.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
3292	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4952	JaffaCakes118_26a65aa0e5d7c739892c48cea02f44ee26260a239d043ec12a055f063306814a.exe
4952	JaffaCakes118_26a65aa0e5d7c739892c48cea02f44ee26260a239d043ec12a055f063306814a.exe
3788	JaffaCakes118_26a65aa0e5d7c739892c48cea02f44ee26260a239d043ec12a055f063306814a.exe
3788	JaffaCakes118_26a65aa0e5d7c739892c48cea02f44ee26260a239d043ec12a055f063306814a.exe
3788	JaffaCakes118_26a65aa0e5d7c739892c48cea02f44ee26260a239d043ec12a055f063306814a.exe
3788	JaffaCakes118_26a65aa0e5d7c739892c48cea02f44ee26260a239d043ec12a055f063306814a.exe
3788	JaffaCakes118_26a65aa0e5d7c739892c48cea02f44ee26260a239d043ec12a055f063306814a.exe
3788	JaffaCakes118_26a65aa0e5d7c739892c48cea02f44ee26260a239d043ec12a055f063306814a.exe
3788	JaffaCakes118_26a65aa0e5d7c739892c48cea02f44ee26260a239d043ec12a055f063306814a.exe
3788	JaffaCakes118_26a65aa0e5d7c739892c48cea02f44ee26260a239d043ec12a055f063306814a.exe
3788	JaffaCakes118_26a65aa0e5d7c739892c48cea02f44ee26260a239d043ec12a055f063306814a.exe
3788	JaffaCakes118_26a65aa0e5d7c739892c48cea02f44ee26260a239d043ec12a055f063306814a.exe
3396	csrss.exe
3396	csrss.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe
4352	injector.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4952	JaffaCakes118_26a65aa0e5d7c739892c48cea02f44ee26260a239d043ec12a055f063306814a.exe
Token: SeImpersonatePrivilege	4952	JaffaCakes118_26a65aa0e5d7c739892c48cea02f44ee26260a239d043ec12a055f063306814a.exe
Token: SeSystemEnvironmentPrivilege	3396	csrss.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3788 wrote to memory of 2936	3788	JaffaCakes118_26a65aa0e5d7c739892c48cea02f44ee26260a239d043ec12a055f063306814a.exe	87
PID 3788 wrote to memory of 2936	3788	JaffaCakes118_26a65aa0e5d7c739892c48cea02f44ee26260a239d043ec12a055f063306814a.exe	87
PID 2936 wrote to memory of 1444	2936	cmd.exe	89
PID 2936 wrote to memory of 1444	2936	cmd.exe	89
PID 3788 wrote to memory of 3396	3788	JaffaCakes118_26a65aa0e5d7c739892c48cea02f44ee26260a239d043ec12a055f063306814a.exe	93
PID 3788 wrote to memory of 3396	3788	JaffaCakes118_26a65aa0e5d7c739892c48cea02f44ee26260a239d043ec12a055f063306814a.exe	93
PID 3788 wrote to memory of 3396	3788	JaffaCakes118_26a65aa0e5d7c739892c48cea02f44ee26260a239d043ec12a055f063306814a.exe	93
PID 3396 wrote to memory of 4352	3396	csrss.exe	106
PID 3396 wrote to memory of 4352	3396	csrss.exe	106

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_26a65aa0e5d7c739892c48cea02f44ee26260a239d043ec12a055f063306814a.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_26a65aa0e5d7c739892c48cea02f44ee26260a239d043ec12a055f063306814a.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4952
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_26a65aa0e5d7c739892c48cea02f44ee26260a239d043ec12a055f063306814a.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_26a65aa0e5d7c739892c48cea02f44ee26260a239d043ec12a055f063306814a.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
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3788
- - 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:2936
  - - 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:1444
- - C:\Windows\rss\csrss.exe
    C:\Windows\rss\csrss.exe /305-305
    3⤵
    - Executes dropped EXE
    - 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:3396
  - - 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:3292
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:4316
  - - 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:4352

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
4.2MB

MD5
e23fd7bf9a33361915102817749fd480

SHA1
5625e757fbfe8e555cb33ccb752b25eb93cba144

SHA256
26a65aa0e5d7c739892c48cea02f44ee26260a239d043ec12a055f063306814a

SHA512
da621425e3987b028520efdff6dea7cebab9a02c6185b06056dc5df7aac7058d35989e56bf2e1bf3465249fcea6c3742715713b404bd4671dcb90c59bcc36ae1

Download Submit
memory/3396-25-0x0000000000400000-0x0000000002F6A000-memory.dmp

Filesize
43.4MB

Download
memory/3396-12-0x0000000000400000-0x0000000002F6A000-memory.dmp

Filesize
43.4MB

Download
memory/3396-20-0x0000000000400000-0x0000000002F6A000-memory.dmp

Filesize
43.4MB

Download
memory/3396-19-0x0000000000400000-0x0000000002F6A000-memory.dmp

Filesize
43.4MB

Download
memory/3396-29-0x0000000000400000-0x0000000002F6A000-memory.dmp

Filesize
43.4MB

Download
memory/3396-28-0x0000000000400000-0x0000000002F6A000-memory.dmp

Filesize
43.4MB

Download
memory/3396-23-0x0000000000400000-0x0000000002F6A000-memory.dmp

Filesize
43.4MB

Download
memory/3396-24-0x0000000000400000-0x0000000002F6A000-memory.dmp

Filesize
43.4MB

Download
memory/3396-21-0x0000000000400000-0x0000000002F6A000-memory.dmp

Filesize
43.4MB

Download
memory/3396-18-0x0000000000400000-0x0000000002F6A000-memory.dmp

Filesize
43.4MB

Download
memory/3396-30-0x0000000000400000-0x0000000002F6A000-memory.dmp

Filesize
43.4MB

Download
memory/3396-27-0x0000000000400000-0x0000000002F6A000-memory.dmp

Filesize
43.4MB

Download
memory/3396-26-0x0000000000400000-0x0000000002F6A000-memory.dmp

Filesize
43.4MB

Download
memory/3396-22-0x0000000000400000-0x0000000002F6A000-memory.dmp

Filesize
43.4MB

Download
memory/3788-10-0x0000000000400000-0x0000000002F6A000-memory.dmp

Filesize
43.4MB

Download
memory/4952-5-0x0000000005770000-0x0000000006012000-memory.dmp

Filesize
8.6MB

Download
memory/4952-0-0x0000000005360000-0x000000000576F000-memory.dmp

Filesize
4.1MB

Download
memory/4952-1-0x0000000005770000-0x0000000006012000-memory.dmp

Filesize
8.6MB

Download
memory/4952-4-0x0000000005360000-0x000000000576F000-memory.dmp

Filesize
4.1MB

Download
memory/4952-2-0x0000000000400000-0x0000000000CBD000-memory.dmp

Filesize
8.7MB

Download
memory/4952-3-0x0000000000400000-0x0000000002F6A000-memory.dmp

Filesize
43.4MB

Download
memory/4952-6-0x0000000000400000-0x0000000000CBD000-memory.dmp

Filesize
8.7MB

Download