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

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\vthblsl = "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

2916 netsh.exe

pid	process
2916	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\vthblsl\ImagePath = "C:\\Windows\\SysWOW64\\vthblsl\\kklwrsqy.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2640 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

kklwrsqy.exe

pid process

2832 kklwrsqy.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

kklwrsqy.exe

description pid process target process

PID 2832 set thread context of 2640 2832 kklwrsqy.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

1012 sc.exe
2268 sc.exe
2728 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2640	svchost.exe

pid	process
2832	kklwrsqy.exe

description	pid	process	target process
PID 2832 set thread context of 2640	2832	kklwrsqy.exe	svchost.exe

pid	process
1012	sc.exe
2268	sc.exe
2728	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

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:

kklwrsqy.exesvchost.execmd.exesc.exesc.exenetsh.exe0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.execmd.exesc.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	kklwrsqy.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	netsh.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 30 IoCs

Processes:

0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exekklwrsqy.exe

description	pid	process	target process
PID 1728 wrote to memory of 2528	1728	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	cmd.exe
PID 1728 wrote to memory of 2528	1728	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	cmd.exe
PID 1728 wrote to memory of 2528	1728	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	cmd.exe
PID 1728 wrote to memory of 2528	1728	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	cmd.exe
PID 1728 wrote to memory of 2040	1728	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	cmd.exe
PID 1728 wrote to memory of 2040	1728	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	cmd.exe
PID 1728 wrote to memory of 2040	1728	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	cmd.exe
PID 1728 wrote to memory of 2040	1728	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	cmd.exe
PID 1728 wrote to memory of 1012	1728	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	sc.exe
PID 1728 wrote to memory of 1012	1728	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	sc.exe
PID 1728 wrote to memory of 1012	1728	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	sc.exe
PID 1728 wrote to memory of 1012	1728	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	sc.exe
PID 1728 wrote to memory of 2268	1728	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	sc.exe
PID 1728 wrote to memory of 2268	1728	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	sc.exe
PID 1728 wrote to memory of 2268	1728	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	sc.exe
PID 1728 wrote to memory of 2268	1728	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	sc.exe
PID 1728 wrote to memory of 2728	1728	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	sc.exe
PID 1728 wrote to memory of 2728	1728	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	sc.exe
PID 1728 wrote to memory of 2728	1728	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	sc.exe
PID 1728 wrote to memory of 2728	1728	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	sc.exe
PID 1728 wrote to memory of 2916	1728	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	netsh.exe
PID 1728 wrote to memory of 2916	1728	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	netsh.exe
PID 1728 wrote to memory of 2916	1728	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	netsh.exe
PID 1728 wrote to memory of 2916	1728	0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe	netsh.exe
PID 2832 wrote to memory of 2640	2832	kklwrsqy.exe	svchost.exe
PID 2832 wrote to memory of 2640	2832	kklwrsqy.exe	svchost.exe
PID 2832 wrote to memory of 2640	2832	kklwrsqy.exe	svchost.exe
PID 2832 wrote to memory of 2640	2832	kklwrsqy.exe	svchost.exe
PID 2832 wrote to memory of 2640	2832	kklwrsqy.exe	svchost.exe
PID 2832 wrote to memory of 2640	2832	kklwrsqy.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\0901ad2e62bd77a5a7bcf823d00c3950_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1728

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vthblsl\
2⤵
- System Location Discovery: System Language Discovery
PID:2528

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kklwrsqy.exe" C:\Windows\SysWOW64\vthblsl\
2⤵
- System Location Discovery: System Language Discovery
PID:2040

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create vthblsl binPath= "C:\Windows\SysWOW64\vthblsl\kklwrsqy.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:1012

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description vthblsl "wifi internet conection"
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:2268

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start vthblsl
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:2728

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:2916

C:\Windows\SysWOW64\vthblsl\kklwrsqy.exe
C:\Windows\SysWOW64\vthblsl\kklwrsqy.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:2832

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:2640

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\kklwrsqy.exe

Filesize
13.1MB

MD5
579c7688917cdf6daf3efdaeb644464a

SHA1
b2d87041a319630071050c7d4c7b83a516d0fa34

SHA256
b2e74d62fa6d3f4fa123826685ee8e2714068bda858fb7a37cb21aaf48e2b2d6

SHA512
be5594f849043b80c02e29c45595b322f11b78da52dfcb89abcf172c863e218c487e44133e5960d1559b56bf4a5485b09ebbaf44f8ff95e2d2a44c89a2116d30

Download Submit
memory/1728-7-0x0000000000400000-0x0000000002FAD000-memory.dmp

Filesize
43.7MB

Download
memory/1728-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1728-2-0x00000000002A0000-0x00000000002B3000-memory.dmp

Filesize
76KB

Download
memory/1728-8-0x00000000002A0000-0x00000000002B3000-memory.dmp

Filesize
76KB

Download
memory/1728-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1728-1-0x0000000003020000-0x0000000003120000-memory.dmp

Filesize
1024KB

Download
memory/2640-16-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2640-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2640-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2640-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2640-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2832-17-0x0000000000400000-0x0000000002FAD000-memory.dmp

Filesize
43.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads