tofsee | 17aabdec054b5a9968a906ff9060a0d02eacb6ad4554d592e42db785eabafa79

General

Target

0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe
Size

13.6MB
MD5

0901ad2e62bd77a5a7bcf823d00c3950
SHA1

5774b58084266028ca060d3cfede4227f1436858
SHA256

17aabdec054b5a9968a906ff9060a0d02eacb6ad4554d592e42db785eabafa79
SHA512

5c1ed73accb0aa99a45f50d0ec3f1a23459e2dafb31932394706f990c64d7f9608f01ff8f990dd594e1f526f59822ad788da2b010a667ccbc438e53c63ee80c3
SSDEEP

24576:6BNzDipfYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYf:6BZi

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

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

4072 netsh.exe

pid	process
4072	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\vgobvgor\ImagePath = "C:\\Windows\\SysWOW64\\vgobvgor\\tvozgocs.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:

0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

4420 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

tvozgocs.exe

pid process

2700 tvozgocs.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

tvozgocs.exe

description pid process target process

PID 2700 set thread context of 4420 2700 tvozgocs.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

452 sc.exe
2372 sc.exe
2128 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4420	svchost.exe

pid	process
2700	tvozgocs.exe

description	pid	process	target process
PID 2700 set thread context of 4420	2700	tvozgocs.exe	svchost.exe

pid	process
452	sc.exe
2372	sc.exe
2128	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

2352 3536 WerFault.exe 0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe
3516 2700 WerFault.exe tvozgocs.exe

pid	pid_target	process	target process
2352	3536	WerFault.exe	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe
3516	2700	WerFault.exe	tvozgocs.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:

netsh.exetvozgocs.exesvchost.execmd.exesc.exesc.exe0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.execmd.exesc.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tvozgocs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	0901ad2e62bd77a5a7bcf823d00c3950_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:

0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exetvozgocs.exe

description	pid	process	target process
PID 3536 wrote to memory of 3224	3536	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	cmd.exe
PID 3536 wrote to memory of 3224	3536	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	cmd.exe
PID 3536 wrote to memory of 3224	3536	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	cmd.exe
PID 3536 wrote to memory of 4392	3536	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	cmd.exe
PID 3536 wrote to memory of 4392	3536	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	cmd.exe
PID 3536 wrote to memory of 4392	3536	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	cmd.exe
PID 3536 wrote to memory of 452	3536	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	sc.exe
PID 3536 wrote to memory of 452	3536	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	sc.exe
PID 3536 wrote to memory of 452	3536	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	sc.exe
PID 3536 wrote to memory of 2372	3536	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	sc.exe
PID 3536 wrote to memory of 2372	3536	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	sc.exe
PID 3536 wrote to memory of 2372	3536	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	sc.exe
PID 3536 wrote to memory of 2128	3536	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	sc.exe
PID 3536 wrote to memory of 2128	3536	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	sc.exe
PID 3536 wrote to memory of 2128	3536	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	sc.exe
PID 3536 wrote to memory of 4072	3536	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	netsh.exe
PID 3536 wrote to memory of 4072	3536	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	netsh.exe
PID 3536 wrote to memory of 4072	3536	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	netsh.exe
PID 2700 wrote to memory of 4420	2700	tvozgocs.exe	svchost.exe
PID 2700 wrote to memory of 4420	2700	tvozgocs.exe	svchost.exe
PID 2700 wrote to memory of 4420	2700	tvozgocs.exe	svchost.exe
PID 2700 wrote to memory of 4420	2700	tvozgocs.exe	svchost.exe
PID 2700 wrote to memory of 4420	2700	tvozgocs.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3536
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vgobvgor\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3224
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tvozgocs.exe" C:\Windows\SysWOW64\vgobvgor\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4392
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create vgobvgor binPath= "C:\Windows\SysWOW64\vgobvgor\tvozgocs.exe /d\"C:\Users\Admin\AppData\Local\Temp\0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:452
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description vgobvgor "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2372
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start vgobvgor
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2128
- 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:4072
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3536 -s 1216
  2⤵
  - Program crash
  PID:2352

C:\Windows\SysWOW64\vgobvgor\tvozgocs.exe
C:\Windows\SysWOW64\vgobvgor\tvozgocs.exe /d"C:\Users\Admin\AppData\Local\Temp\0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2700
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4420
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2700 -s 524
  2⤵
  - Program crash
  PID:3516

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3536 -ip 3536
1⤵
PID:4532

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 2700 -ip 2700
1⤵
PID:2164

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\tvozgocs.exe

Filesize
12.0MB

MD5
5fb5ccdeb66f848af007162ac3933383

SHA1
e75eb03e7cdd42b9cd56839b5fbd9722e51f779a

SHA256
6fa04728c94d0664760bca9743a93dc4e86238105233b79a7478e73bc7b6282b

SHA512
a55fa313f6b94cb0126a20fcfbaa91dba646c08796ac1dffab85185b4e9a0c49dd225f2b7d42cb260eee35a3c832fb89af59d8be4bc8377dbc31074990f0fefb

Download Submit
memory/2700-15-0x0000000000400000-0x0000000002FAD000-memory.dmp

Filesize
43.7MB

Download
memory/3536-1-0x00000000031F0000-0x00000000032F0000-memory.dmp

Filesize
1024KB

Download
memory/3536-2-0x0000000003150000-0x0000000003163000-memory.dmp

Filesize
76KB

Download
memory/3536-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3536-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3536-8-0x0000000003150000-0x0000000003163000-memory.dmp

Filesize
76KB

Download
memory/3536-7-0x0000000000400000-0x0000000002FAD000-memory.dmp

Filesize
43.7MB

Download
memory/4420-11-0x00000000007B0000-0x00000000007C5000-memory.dmp

Filesize
84KB

Download
memory/4420-13-0x00000000007B0000-0x00000000007C5000-memory.dmp

Filesize
84KB

Download
memory/4420-14-0x00000000007B0000-0x00000000007C5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads