tofsee | 76354adc38ca087cde5e61c9249486df3d2d01939587740c0dbc836b97383ad7

General

Target

daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe
Size

12.4MB
MD5

daa374c245a6a97a5f8c9f6dc178f6ea
SHA1

641a53f516c870ceb2c078482aec3cea8eca0937
SHA256

76354adc38ca087cde5e61c9249486df3d2d01939587740c0dbc836b97383ad7
SHA512

d9bbfe065875bd4f21419a94e50b632c82142527713f7b2098fba0a62ae033e9fe704c9cc66dd03a002c39b3c8ccbceaca15533d2ce5ed44aaa4f9da1e26f3e6
SSDEEP

393216:9YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYn:

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

4164 netsh.exe

pid	process
4164	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\pbnoikak\ImagePath = "C:\\Windows\\SysWOW64\\pbnoikak\\fvvvkbhz.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:

daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

4776 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

fvvvkbhz.exe

pid process

764 fvvvkbhz.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

fvvvkbhz.exe

description pid process target process

PID 764 set thread context of 4776 764 fvvvkbhz.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

1928 sc.exe
2136 sc.exe
1528 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4776	svchost.exe

pid	process
764	fvvvkbhz.exe

description	pid	process	target process
PID 764 set thread context of 4776	764	fvvvkbhz.exe	svchost.exe

pid	process
1928	sc.exe
2136	sc.exe
1528	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

4528 3148 WerFault.exe daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe
3736 764 WerFault.exe fvvvkbhz.exe

pid	pid_target	process	target process
4528	3148	WerFault.exe	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe
3736	764	WerFault.exe	fvvvkbhz.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.exefvvvkbhz.exesvchost.exedaa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.execmd.exesc.exenetsh.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	fvvvkbhz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	daa374c245a6a97a5f8c9f6dc178f6ea_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	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exefvvvkbhz.exe

description	pid	process	target process
PID 3148 wrote to memory of 4836	3148	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	cmd.exe
PID 3148 wrote to memory of 4836	3148	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	cmd.exe
PID 3148 wrote to memory of 4836	3148	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	cmd.exe
PID 3148 wrote to memory of 2968	3148	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	cmd.exe
PID 3148 wrote to memory of 2968	3148	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	cmd.exe
PID 3148 wrote to memory of 2968	3148	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	cmd.exe
PID 3148 wrote to memory of 1928	3148	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	sc.exe
PID 3148 wrote to memory of 1928	3148	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	sc.exe
PID 3148 wrote to memory of 1928	3148	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	sc.exe
PID 3148 wrote to memory of 2136	3148	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	sc.exe
PID 3148 wrote to memory of 2136	3148	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	sc.exe
PID 3148 wrote to memory of 2136	3148	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	sc.exe
PID 3148 wrote to memory of 1528	3148	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	sc.exe
PID 3148 wrote to memory of 1528	3148	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	sc.exe
PID 3148 wrote to memory of 1528	3148	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	sc.exe
PID 3148 wrote to memory of 4164	3148	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	netsh.exe
PID 3148 wrote to memory of 4164	3148	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	netsh.exe
PID 3148 wrote to memory of 4164	3148	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	netsh.exe
PID 764 wrote to memory of 4776	764	fvvvkbhz.exe	svchost.exe
PID 764 wrote to memory of 4776	764	fvvvkbhz.exe	svchost.exe
PID 764 wrote to memory of 4776	764	fvvvkbhz.exe	svchost.exe
PID 764 wrote to memory of 4776	764	fvvvkbhz.exe	svchost.exe
PID 764 wrote to memory of 4776	764	fvvvkbhz.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3148
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pbnoikak\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4836
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fvvvkbhz.exe" C:\Windows\SysWOW64\pbnoikak\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2968
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create pbnoikak binPath= "C:\Windows\SysWOW64\pbnoikak\fvvvkbhz.exe /d\"C:\Users\Admin\AppData\Local\Temp\daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1928
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description pbnoikak "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2136
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start pbnoikak
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1528
- 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:4164
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3148 -s 660
  2⤵
  - Program crash
  PID:4528

C:\Windows\SysWOW64\pbnoikak\fvvvkbhz.exe
C:\Windows\SysWOW64\pbnoikak\fvvvkbhz.exe /d"C:\Users\Admin\AppData\Local\Temp\daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:764
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4776
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 764 -s 512
  2⤵
  - Program crash
  PID:3736

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3148 -ip 3148
1⤵
PID:4928

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 764 -ip 764
1⤵
PID:4892

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\fvvvkbhz.exe

Filesize
14.7MB

MD5
3452b3c9a247144577218c82ebc464c1

SHA1
1e132f92e328b640b98c9800dd270f188452d9ed

SHA256
8ed46ecb7fdaca575c25b93361e3c0243ba634359715077e34b088700949c53f

SHA512
22e36bc065dd0e3f0497b7aa266c5fe1c892bba2feb4f1ae0c01a80b039b40e75cab71867f9e8e3e4d06fd0985d04a15040b9a4c6fabd4e6401fd9d89df7cd2d

Download Submit
memory/764-13-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/764-12-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/764-11-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/764-18-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/3148-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3148-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3148-8-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/3148-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3148-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3148-1-0x0000000000580000-0x0000000000680000-memory.dmp

Filesize
1024KB

Download
memory/4776-14-0x0000000000F20000-0x0000000000F35000-memory.dmp

Filesize
84KB

Download
memory/4776-16-0x0000000000F20000-0x0000000000F35000-memory.dmp

Filesize
84KB

Download
memory/4776-17-0x0000000000F20000-0x0000000000F35000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads