tofsee | 8fe7c06b85bc726f57b04921a0695f69520a4d639f6c718a1d2d6067d347cc67

General

Target

29c1e4e4482eb01936de16ff0e11041c_JaffaCakes118.exe
Size

12.8MB
MD5

29c1e4e4482eb01936de16ff0e11041c
SHA1

69838a4c24177c6702a8d89a5c3bd83760449aaa
SHA256

8fe7c06b85bc726f57b04921a0695f69520a4d639f6c718a1d2d6067d347cc67
SHA512

425d09859a89aa7cac0420be192d3c3bc33d12f50e08a81c2b3eabfad89809b734d5f56ae236e1b2123ec6f62a0704a0a30b0226718d27f690ab504d071d9275
SSDEEP

24576:3nrnTREWa7SX1TOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOu:RJa7M

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.6

lazystax.ru

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

952 netsh.exe

pid	process
952	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\ncencdid\ImagePath = "C:\\Windows\\SysWOW64\\ncencdid\\udsnzyfp.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:

29c1e4e4482eb01936de16ff0e11041c_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	29c1e4e4482eb01936de16ff0e11041c_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

4344 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

udsnzyfp.exe

pid process

4340 udsnzyfp.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

udsnzyfp.exe

description pid process target process

PID 4340 set thread context of 4344 4340 udsnzyfp.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

3480 sc.exe
4320 sc.exe
976 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4344	svchost.exe

pid	process
4340	udsnzyfp.exe

description	pid	process	target process
PID 4340 set thread context of 4344	4340	udsnzyfp.exe	svchost.exe

pid	process
3480	sc.exe
4320	sc.exe
976	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

412 3708 WerFault.exe 29c1e4e4482eb01936de16ff0e11041c_JaffaCakes118.exe
2996 4340 WerFault.exe udsnzyfp.exe

pid	pid_target	process	target process
412	3708	WerFault.exe	29c1e4e4482eb01936de16ff0e11041c_JaffaCakes118.exe
2996	4340	WerFault.exe	udsnzyfp.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.exesc.exenetsh.exesvchost.exe29c1e4e4482eb01936de16ff0e11041c_JaffaCakes118.execmd.exesc.exeudsnzyfp.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	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	29c1e4e4482eb01936de16ff0e11041c_JaffaCakes118.exe
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	udsnzyfp.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

29c1e4e4482eb01936de16ff0e11041c_JaffaCakes118.exeudsnzyfp.exe

description	pid	process	target process
PID 3708 wrote to memory of 1956	3708	29c1e4e4482eb01936de16ff0e11041c_JaffaCakes118.exe	cmd.exe
PID 3708 wrote to memory of 1956	3708	29c1e4e4482eb01936de16ff0e11041c_JaffaCakes118.exe	cmd.exe
PID 3708 wrote to memory of 1956	3708	29c1e4e4482eb01936de16ff0e11041c_JaffaCakes118.exe	cmd.exe
PID 3708 wrote to memory of 672	3708	29c1e4e4482eb01936de16ff0e11041c_JaffaCakes118.exe	cmd.exe
PID 3708 wrote to memory of 672	3708	29c1e4e4482eb01936de16ff0e11041c_JaffaCakes118.exe	cmd.exe
PID 3708 wrote to memory of 672	3708	29c1e4e4482eb01936de16ff0e11041c_JaffaCakes118.exe	cmd.exe
PID 3708 wrote to memory of 976	3708	29c1e4e4482eb01936de16ff0e11041c_JaffaCakes118.exe	sc.exe
PID 3708 wrote to memory of 976	3708	29c1e4e4482eb01936de16ff0e11041c_JaffaCakes118.exe	sc.exe
PID 3708 wrote to memory of 976	3708	29c1e4e4482eb01936de16ff0e11041c_JaffaCakes118.exe	sc.exe
PID 3708 wrote to memory of 3480	3708	29c1e4e4482eb01936de16ff0e11041c_JaffaCakes118.exe	sc.exe
PID 3708 wrote to memory of 3480	3708	29c1e4e4482eb01936de16ff0e11041c_JaffaCakes118.exe	sc.exe
PID 3708 wrote to memory of 3480	3708	29c1e4e4482eb01936de16ff0e11041c_JaffaCakes118.exe	sc.exe
PID 3708 wrote to memory of 4320	3708	29c1e4e4482eb01936de16ff0e11041c_JaffaCakes118.exe	sc.exe
PID 3708 wrote to memory of 4320	3708	29c1e4e4482eb01936de16ff0e11041c_JaffaCakes118.exe	sc.exe
PID 3708 wrote to memory of 4320	3708	29c1e4e4482eb01936de16ff0e11041c_JaffaCakes118.exe	sc.exe
PID 3708 wrote to memory of 952	3708	29c1e4e4482eb01936de16ff0e11041c_JaffaCakes118.exe	netsh.exe
PID 3708 wrote to memory of 952	3708	29c1e4e4482eb01936de16ff0e11041c_JaffaCakes118.exe	netsh.exe
PID 3708 wrote to memory of 952	3708	29c1e4e4482eb01936de16ff0e11041c_JaffaCakes118.exe	netsh.exe
PID 4340 wrote to memory of 4344	4340	udsnzyfp.exe	svchost.exe
PID 4340 wrote to memory of 4344	4340	udsnzyfp.exe	svchost.exe
PID 4340 wrote to memory of 4344	4340	udsnzyfp.exe	svchost.exe
PID 4340 wrote to memory of 4344	4340	udsnzyfp.exe	svchost.exe
PID 4340 wrote to memory of 4344	4340	udsnzyfp.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\29c1e4e4482eb01936de16ff0e11041c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\29c1e4e4482eb01936de16ff0e11041c_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3708

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ncencdid\
2⤵
- System Location Discovery: System Language Discovery
PID:1956

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\udsnzyfp.exe" C:\Windows\SysWOW64\ncencdid\
2⤵
- System Location Discovery: System Language Discovery
PID:672

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create ncencdid binPath= "C:\Windows\SysWOW64\ncencdid\udsnzyfp.exe /d\"C:\Users\Admin\AppData\Local\Temp\29c1e4e4482eb01936de16ff0e11041c_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:976

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description ncencdid "wifi internet conection"
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:3480

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start ncencdid
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:4320

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:952

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3708 -s 784
2⤵
- Program crash
PID:412

C:\Windows\SysWOW64\ncencdid\udsnzyfp.exe
C:\Windows\SysWOW64\ncencdid\udsnzyfp.exe /d"C:\Users\Admin\AppData\Local\Temp\29c1e4e4482eb01936de16ff0e11041c_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4340

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
- System Location Discovery: System Language Discovery
PID:4344

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4340 -s 560
2⤵
- Program crash
PID:2996

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3708 -ip 3708
1⤵
PID:2572

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4340 -ip 4340
1⤵
PID:2600

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\udsnzyfp.exe

Filesize
10.7MB

MD5
46b356f8bfc5146b77b78c46d220c58b

SHA1
72308cda488a9b189383ec4a8fa3faf2435b291e

SHA256
1b1be4f10db9ffebbddd56cd3a20cd3428b6555b9a03493f7fe081a46e8320aa

SHA512
dcd648f07deb82a19b68554c4eef4b13436bc97a913c36b7e764823a27ab7c2c1cdaad275c264bd5185b093fc8f88556b5b378c063f5e84c2371f1cc06777115

Download Submit
memory/3708-1-0x0000000000C60000-0x0000000000D60000-memory.dmp

Filesize
1024KB

Download
memory/3708-2-0x0000000002660000-0x0000000002673000-memory.dmp

Filesize
76KB

Download
memory/3708-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3708-8-0x0000000002660000-0x0000000002673000-memory.dmp

Filesize
76KB

Download
memory/3708-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3708-7-0x0000000000400000-0x00000000008F5000-memory.dmp

Filesize
5.0MB

Download
memory/4340-15-0x0000000000400000-0x00000000008F5000-memory.dmp

Filesize
5.0MB

Download
memory/4344-11-0x0000000000830000-0x0000000000845000-memory.dmp

Filesize
84KB

Download
memory/4344-13-0x0000000000830000-0x0000000000845000-memory.dmp

Filesize
84KB

Download
memory/4344-14-0x0000000000830000-0x0000000000845000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads