tofsee | a4e60bc819b34498ee0bc166ca990715c9f22405ef3dc5c0b2bdb4b198edf4ea

General

Target

698c5db0fb2b17b229422cd0bfc82b13_JaffaCakes118.exe
Size

10.7MB
MD5

698c5db0fb2b17b229422cd0bfc82b13
SHA1

3df1dddb160039ce0fc4977c15894e2f52e45da2
SHA256

a4e60bc819b34498ee0bc166ca990715c9f22405ef3dc5c0b2bdb4b198edf4ea
SHA512

1d129ce8aacb4c3aac039eb70b8e81a668c648ba881fa27dfa8486288aca77f4c439736f4212e21a59153864e4d820b628cf5035d1e27c6a4cbfc28068c5fe23
SSDEEP

196608:Q3qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqv:Q

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002
Modifies Windows Firewall 2 TTPs 1 IoCs
evasion

Windows Service
T1543.003

Disable or Modify System Firewall
T1562.004

Processes:

netsh.exe

pid process

2628 netsh.exe

pid	process
2628	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\hiielfff\ImagePath = "C:\\Windows\\SysWOW64\\hiielfff\\jylhtslx.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

698c5db0fb2b17b229422cd0bfc82b13_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-464762018-485119342-1613148473-1000\Control Panel\International\Geo\Nation	698c5db0fb2b17b229422cd0bfc82b13_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

756 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

jylhtslx.exe

pid process

3352 jylhtslx.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

jylhtslx.exe

description pid process target process

PID 3352 set thread context of 756 3352 jylhtslx.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

3348 sc.exe
1572 sc.exe
1452 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
756	svchost.exe

pid	process
3352	jylhtslx.exe

description	pid	process	target process
PID 3352 set thread context of 756	3352	jylhtslx.exe	svchost.exe

pid	process
3348	sc.exe
1572	sc.exe
1452	sc.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

Processes:

netsh.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

3288 4276 WerFault.exe 698c5db0fb2b17b229422cd0bfc82b13_JaffaCakes118.exe
1624 3352 WerFault.exe jylhtslx.exe

pid	pid_target	process	target process
3288	4276	WerFault.exe	698c5db0fb2b17b229422cd0bfc82b13_JaffaCakes118.exe
1624	3352	WerFault.exe	jylhtslx.exe

System Location Discovery: System Language Discovery 1 TTPs 9 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

Processes:

cmd.exesc.exejylhtslx.exesc.exenetsh.exesvchost.exe698c5db0fb2b17b229422cd0bfc82b13_JaffaCakes118.execmd.exesc.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jylhtslx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	698c5db0fb2b17b229422cd0bfc82b13_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

698c5db0fb2b17b229422cd0bfc82b13_JaffaCakes118.exejylhtslx.exe

description	pid	process	target process
PID 4276 wrote to memory of 5112	4276	698c5db0fb2b17b229422cd0bfc82b13_JaffaCakes118.exe	cmd.exe
PID 4276 wrote to memory of 5112	4276	698c5db0fb2b17b229422cd0bfc82b13_JaffaCakes118.exe	cmd.exe
PID 4276 wrote to memory of 5112	4276	698c5db0fb2b17b229422cd0bfc82b13_JaffaCakes118.exe	cmd.exe
PID 4276 wrote to memory of 5084	4276	698c5db0fb2b17b229422cd0bfc82b13_JaffaCakes118.exe	cmd.exe
PID 4276 wrote to memory of 5084	4276	698c5db0fb2b17b229422cd0bfc82b13_JaffaCakes118.exe	cmd.exe
PID 4276 wrote to memory of 5084	4276	698c5db0fb2b17b229422cd0bfc82b13_JaffaCakes118.exe	cmd.exe
PID 4276 wrote to memory of 3348	4276	698c5db0fb2b17b229422cd0bfc82b13_JaffaCakes118.exe	sc.exe
PID 4276 wrote to memory of 3348	4276	698c5db0fb2b17b229422cd0bfc82b13_JaffaCakes118.exe	sc.exe
PID 4276 wrote to memory of 3348	4276	698c5db0fb2b17b229422cd0bfc82b13_JaffaCakes118.exe	sc.exe
PID 4276 wrote to memory of 1572	4276	698c5db0fb2b17b229422cd0bfc82b13_JaffaCakes118.exe	sc.exe
PID 4276 wrote to memory of 1572	4276	698c5db0fb2b17b229422cd0bfc82b13_JaffaCakes118.exe	sc.exe
PID 4276 wrote to memory of 1572	4276	698c5db0fb2b17b229422cd0bfc82b13_JaffaCakes118.exe	sc.exe
PID 4276 wrote to memory of 1452	4276	698c5db0fb2b17b229422cd0bfc82b13_JaffaCakes118.exe	sc.exe
PID 4276 wrote to memory of 1452	4276	698c5db0fb2b17b229422cd0bfc82b13_JaffaCakes118.exe	sc.exe
PID 4276 wrote to memory of 1452	4276	698c5db0fb2b17b229422cd0bfc82b13_JaffaCakes118.exe	sc.exe
PID 4276 wrote to memory of 2628	4276	698c5db0fb2b17b229422cd0bfc82b13_JaffaCakes118.exe	netsh.exe
PID 4276 wrote to memory of 2628	4276	698c5db0fb2b17b229422cd0bfc82b13_JaffaCakes118.exe	netsh.exe
PID 4276 wrote to memory of 2628	4276	698c5db0fb2b17b229422cd0bfc82b13_JaffaCakes118.exe	netsh.exe
PID 3352 wrote to memory of 756	3352	jylhtslx.exe	svchost.exe
PID 3352 wrote to memory of 756	3352	jylhtslx.exe	svchost.exe
PID 3352 wrote to memory of 756	3352	jylhtslx.exe	svchost.exe
PID 3352 wrote to memory of 756	3352	jylhtslx.exe	svchost.exe
PID 3352 wrote to memory of 756	3352	jylhtslx.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\698c5db0fb2b17b229422cd0bfc82b13_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\698c5db0fb2b17b229422cd0bfc82b13_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4276

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hiielfff\
2⤵
- System Location Discovery: System Language Discovery
PID:5112

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jylhtslx.exe" C:\Windows\SysWOW64\hiielfff\
2⤵
- System Location Discovery: System Language Discovery
PID:5084

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create hiielfff binPath= "C:\Windows\SysWOW64\hiielfff\jylhtslx.exe /d\"C:\Users\Admin\AppData\Local\Temp\698c5db0fb2b17b229422cd0bfc82b13_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:3348

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description hiielfff "wifi internet conection"
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:1572

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start hiielfff
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:1452

C:\Windows\SysWOW64\netsh.exe
"C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
2⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
PID:2628

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4276 -s 1216
2⤵
- Program crash
PID:3288

C:\Windows\SysWOW64\hiielfff\jylhtslx.exe
C:\Windows\SysWOW64\hiielfff\jylhtslx.exe /d"C:\Users\Admin\AppData\Local\Temp\698c5db0fb2b17b229422cd0bfc82b13_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3352

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
- System Location Discovery: System Language Discovery
PID:756

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3352 -s 516
2⤵
- Program crash
PID:1624

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4276 -ip 4276
1⤵
PID:2200

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 3352 -ip 3352
1⤵
PID:5080

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\jylhtslx.exe
Filesize
10.4MB

MD5
238e098ae1b17e702fe178f9451b7c2f

SHA1
a35faae62e33102b9dc2aca14301bca578071177

SHA256
69c8e95149d8b132948f5258d29f85c9e758f242750e5648ff08059dd5129403

SHA512
6eefc3fa82a2b24845305a1fbd0dc4d7281cff8b290319a47c6c1d35b162308f0c8261d70f7102379967ee7ce7e861a464356c8c04fe07c6cc4d64e76c156bf7

Download Submit
memory/756-13-0x0000000000900000-0x0000000000915000-memory.dmp

Filesize
84KB

Download
memory/756-15-0x0000000000900000-0x0000000000915000-memory.dmp

Filesize
84KB

Download
memory/756-16-0x0000000000900000-0x0000000000915000-memory.dmp

Filesize
84KB

Download
memory/3352-11-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/3352-12-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/3352-17-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/4276-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4276-2-0x0000000000880000-0x0000000000893000-memory.dmp

Filesize
76KB

Download
memory/4276-8-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/4276-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4276-9-0x0000000000880000-0x0000000000893000-memory.dmp

Filesize
76KB

Download
memory/4276-1-0x00000000008B0000-0x00000000009B0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads