tofsee | c5115b8da44355cfb8993ee6c2bb8d4503ed063a612b93369a1a252c3b0e43b2

General

Target

501269ab016ccab753cc21fc38002f10_JaffaCakes118.exe
Size

12.0MB
MD5

501269ab016ccab753cc21fc38002f10
SHA1

0401a4c62eac2e78fa22c2f087d19c2ae70dc245
SHA256

c5115b8da44355cfb8993ee6c2bb8d4503ed063a612b93369a1a252c3b0e43b2
SHA512

85e145151df1ff4003d68e6dbf91dd2a1ef30cf36b2080736ed6c1a314ecd7fafd1272e83d1a757fa7e77ec08bff57937d7370a4f1c036de5946bb8495df3ea0
SSDEEP

3072:uNoWIXVg044YmyJc/rY/2Woct6Mz+7L00vyLf9nQLWLIMcesvKeHTQzIaH/q99Q0:uNoWwy0jYBkE/vocLz+2QSLIBee8q9N

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

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\fuevqgbs = "0"	svchost.exe

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

2972 netsh.exe

pid	process
2972	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\fuevqgbs\ImagePath = "C:\\Windows\\SysWOW64\\fuevqgbs\\siiixoum.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2892 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

siiixoum.exe

pid process

2808 siiixoum.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

siiixoum.exe

description pid process target process

PID 2808 set thread context of 2892 2808 siiixoum.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

2932 sc.exe
1948 sc.exe
2440 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2892	svchost.exe

pid	process
2808	siiixoum.exe

description	pid	process	target process
PID 2808 set thread context of 2892	2808	siiixoum.exe	svchost.exe

pid	process
2932	sc.exe
1948	sc.exe
2440	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.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:

501269ab016ccab753cc21fc38002f10_JaffaCakes118.exenetsh.execmd.execmd.exesc.exesc.exesc.exesiiixoum.exesvchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	501269ab016ccab753cc21fc38002f10_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	siiixoum.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

501269ab016ccab753cc21fc38002f10_JaffaCakes118.exesiiixoum.exe

description	pid	process	target process
PID 3000 wrote to memory of 1384	3000	501269ab016ccab753cc21fc38002f10_JaffaCakes118.exe	cmd.exe
PID 3000 wrote to memory of 1384	3000	501269ab016ccab753cc21fc38002f10_JaffaCakes118.exe	cmd.exe
PID 3000 wrote to memory of 1384	3000	501269ab016ccab753cc21fc38002f10_JaffaCakes118.exe	cmd.exe
PID 3000 wrote to memory of 1384	3000	501269ab016ccab753cc21fc38002f10_JaffaCakes118.exe	cmd.exe
PID 3000 wrote to memory of 2384	3000	501269ab016ccab753cc21fc38002f10_JaffaCakes118.exe	cmd.exe
PID 3000 wrote to memory of 2384	3000	501269ab016ccab753cc21fc38002f10_JaffaCakes118.exe	cmd.exe
PID 3000 wrote to memory of 2384	3000	501269ab016ccab753cc21fc38002f10_JaffaCakes118.exe	cmd.exe
PID 3000 wrote to memory of 2384	3000	501269ab016ccab753cc21fc38002f10_JaffaCakes118.exe	cmd.exe
PID 3000 wrote to memory of 2932	3000	501269ab016ccab753cc21fc38002f10_JaffaCakes118.exe	sc.exe
PID 3000 wrote to memory of 2932	3000	501269ab016ccab753cc21fc38002f10_JaffaCakes118.exe	sc.exe
PID 3000 wrote to memory of 2932	3000	501269ab016ccab753cc21fc38002f10_JaffaCakes118.exe	sc.exe
PID 3000 wrote to memory of 2932	3000	501269ab016ccab753cc21fc38002f10_JaffaCakes118.exe	sc.exe
PID 3000 wrote to memory of 1948	3000	501269ab016ccab753cc21fc38002f10_JaffaCakes118.exe	sc.exe
PID 3000 wrote to memory of 1948	3000	501269ab016ccab753cc21fc38002f10_JaffaCakes118.exe	sc.exe
PID 3000 wrote to memory of 1948	3000	501269ab016ccab753cc21fc38002f10_JaffaCakes118.exe	sc.exe
PID 3000 wrote to memory of 1948	3000	501269ab016ccab753cc21fc38002f10_JaffaCakes118.exe	sc.exe
PID 3000 wrote to memory of 2440	3000	501269ab016ccab753cc21fc38002f10_JaffaCakes118.exe	sc.exe
PID 3000 wrote to memory of 2440	3000	501269ab016ccab753cc21fc38002f10_JaffaCakes118.exe	sc.exe
PID 3000 wrote to memory of 2440	3000	501269ab016ccab753cc21fc38002f10_JaffaCakes118.exe	sc.exe
PID 3000 wrote to memory of 2440	3000	501269ab016ccab753cc21fc38002f10_JaffaCakes118.exe	sc.exe
PID 3000 wrote to memory of 2972	3000	501269ab016ccab753cc21fc38002f10_JaffaCakes118.exe	netsh.exe
PID 3000 wrote to memory of 2972	3000	501269ab016ccab753cc21fc38002f10_JaffaCakes118.exe	netsh.exe
PID 3000 wrote to memory of 2972	3000	501269ab016ccab753cc21fc38002f10_JaffaCakes118.exe	netsh.exe
PID 3000 wrote to memory of 2972	3000	501269ab016ccab753cc21fc38002f10_JaffaCakes118.exe	netsh.exe
PID 2808 wrote to memory of 2892	2808	siiixoum.exe	svchost.exe
PID 2808 wrote to memory of 2892	2808	siiixoum.exe	svchost.exe
PID 2808 wrote to memory of 2892	2808	siiixoum.exe	svchost.exe
PID 2808 wrote to memory of 2892	2808	siiixoum.exe	svchost.exe
PID 2808 wrote to memory of 2892	2808	siiixoum.exe	svchost.exe
PID 2808 wrote to memory of 2892	2808	siiixoum.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\501269ab016ccab753cc21fc38002f10_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\501269ab016ccab753cc21fc38002f10_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3000

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fuevqgbs\
2⤵
- System Location Discovery: System Language Discovery
PID:1384

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\siiixoum.exe" C:\Windows\SysWOW64\fuevqgbs\
2⤵
- System Location Discovery: System Language Discovery
PID:2384

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create fuevqgbs binPath= "C:\Windows\SysWOW64\fuevqgbs\siiixoum.exe /d\"C:\Users\Admin\AppData\Local\Temp\501269ab016ccab753cc21fc38002f10_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:2932

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description fuevqgbs "wifi internet conection"
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:1948

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start fuevqgbs
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:2440

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:2972

C:\Windows\SysWOW64\fuevqgbs\siiixoum.exe
C:\Windows\SysWOW64\fuevqgbs\siiixoum.exe /d"C:\Users\Admin\AppData\Local\Temp\501269ab016ccab753cc21fc38002f10_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2808

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
- System Location Discovery: System Language Discovery
PID:2892

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

2

T1562

Disable or Modify System Firewall

1

T1562.004

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

1

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\siiixoum.exe

Filesize
10.2MB

MD5
e5d69aa6f3b340bcf3c1bc48eaee4b00

SHA1
5dce1910cc6b773d62ea08d8cc2d66ec9c61873a

SHA256
ce512874a209286ce3c762b6a2cad8c584af5bac06e0ed14b853ba9762327c5c

SHA512
7b1f3ea0a8b59695aeefee2d83c4c525649415994cb6caf64e61b0d48a3b509cbcbc8a65ff589a4a1ec4da83d4f35ff9a7998b33ffb63ee97528957e4a5ff943

Download Submit
memory/2808-17-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/2892-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2892-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2892-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2892-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2892-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3000-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3000-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/3000-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3000-8-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/3000-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/3000-1-0x0000000000290000-0x0000000000390000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads