tofsee | 153625180da77e381c9dfaab2a933696c94bec49e898c0a3294b0180d568792d

General

Target

e8ed9b7f958491838d2b52374770643c_JaffaCakes118.exe
Size

13.9MB
MD5

e8ed9b7f958491838d2b52374770643c
SHA1

9980920c4ac6fd5310370dcc8c08ba36c08a8cb0
SHA256

153625180da77e381c9dfaab2a933696c94bec49e898c0a3294b0180d568792d
SHA512

0ab01fe58edb208ba742199584374e274ebff97e163dc1a1f5545a00de9351468aff085c6fb22055ce99f4bbe9e7829050a139e46bd9892f4bf96cc106510452
SSDEEP

12288:NZq+cdlGKSEdlGfxl5V/ZAMbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb7:Nk9dVcl5V/Z

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

716 netsh.exe

pid	process
716	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\shhsibgn\ImagePath = "C:\\Windows\\SysWOW64\\shhsibgn\\tnwgtwbn.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:

e8ed9b7f958491838d2b52374770643c_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation	e8ed9b7f958491838d2b52374770643c_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1604 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

tnwgtwbn.exe

pid process

3448 tnwgtwbn.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

tnwgtwbn.exe

description pid process target process

PID 3448 set thread context of 1604 3448 tnwgtwbn.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

5020 sc.exe
3732 sc.exe
3308 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1604	svchost.exe

pid	process
3448	tnwgtwbn.exe

description	pid	process	target process
PID 3448 set thread context of 1604	3448	tnwgtwbn.exe	svchost.exe

pid	process
5020	sc.exe
3732	sc.exe
3308	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

3372 3364 WerFault.exe e8ed9b7f958491838d2b52374770643c_JaffaCakes118.exe
3676 3448 WerFault.exe tnwgtwbn.exe

pid	pid_target	process	target process
3372	3364	WerFault.exe	e8ed9b7f958491838d2b52374770643c_JaffaCakes118.exe
3676	3448	WerFault.exe	tnwgtwbn.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:

e8ed9b7f958491838d2b52374770643c_JaffaCakes118.exesc.exesc.exenetsh.execmd.execmd.exesc.exetnwgtwbn.exesvchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e8ed9b7f958491838d2b52374770643c_JaffaCakes118.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	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	tnwgtwbn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

e8ed9b7f958491838d2b52374770643c_JaffaCakes118.exetnwgtwbn.exe

description	pid	process	target process
PID 3364 wrote to memory of 5280	3364	e8ed9b7f958491838d2b52374770643c_JaffaCakes118.exe	cmd.exe
PID 3364 wrote to memory of 5280	3364	e8ed9b7f958491838d2b52374770643c_JaffaCakes118.exe	cmd.exe
PID 3364 wrote to memory of 5280	3364	e8ed9b7f958491838d2b52374770643c_JaffaCakes118.exe	cmd.exe
PID 3364 wrote to memory of 5304	3364	e8ed9b7f958491838d2b52374770643c_JaffaCakes118.exe	cmd.exe
PID 3364 wrote to memory of 5304	3364	e8ed9b7f958491838d2b52374770643c_JaffaCakes118.exe	cmd.exe
PID 3364 wrote to memory of 5304	3364	e8ed9b7f958491838d2b52374770643c_JaffaCakes118.exe	cmd.exe
PID 3364 wrote to memory of 5020	3364	e8ed9b7f958491838d2b52374770643c_JaffaCakes118.exe	sc.exe
PID 3364 wrote to memory of 5020	3364	e8ed9b7f958491838d2b52374770643c_JaffaCakes118.exe	sc.exe
PID 3364 wrote to memory of 5020	3364	e8ed9b7f958491838d2b52374770643c_JaffaCakes118.exe	sc.exe
PID 3364 wrote to memory of 3732	3364	e8ed9b7f958491838d2b52374770643c_JaffaCakes118.exe	sc.exe
PID 3364 wrote to memory of 3732	3364	e8ed9b7f958491838d2b52374770643c_JaffaCakes118.exe	sc.exe
PID 3364 wrote to memory of 3732	3364	e8ed9b7f958491838d2b52374770643c_JaffaCakes118.exe	sc.exe
PID 3364 wrote to memory of 3308	3364	e8ed9b7f958491838d2b52374770643c_JaffaCakes118.exe	sc.exe
PID 3364 wrote to memory of 3308	3364	e8ed9b7f958491838d2b52374770643c_JaffaCakes118.exe	sc.exe
PID 3364 wrote to memory of 3308	3364	e8ed9b7f958491838d2b52374770643c_JaffaCakes118.exe	sc.exe
PID 3364 wrote to memory of 716	3364	e8ed9b7f958491838d2b52374770643c_JaffaCakes118.exe	netsh.exe
PID 3364 wrote to memory of 716	3364	e8ed9b7f958491838d2b52374770643c_JaffaCakes118.exe	netsh.exe
PID 3364 wrote to memory of 716	3364	e8ed9b7f958491838d2b52374770643c_JaffaCakes118.exe	netsh.exe
PID 3448 wrote to memory of 1604	3448	tnwgtwbn.exe	svchost.exe
PID 3448 wrote to memory of 1604	3448	tnwgtwbn.exe	svchost.exe
PID 3448 wrote to memory of 1604	3448	tnwgtwbn.exe	svchost.exe
PID 3448 wrote to memory of 1604	3448	tnwgtwbn.exe	svchost.exe
PID 3448 wrote to memory of 1604	3448	tnwgtwbn.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\e8ed9b7f958491838d2b52374770643c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e8ed9b7f958491838d2b52374770643c_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3364
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\shhsibgn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5280
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tnwgtwbn.exe" C:\Windows\SysWOW64\shhsibgn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5304
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create shhsibgn binPath= "C:\Windows\SysWOW64\shhsibgn\tnwgtwbn.exe /d\"C:\Users\Admin\AppData\Local\Temp\e8ed9b7f958491838d2b52374770643c_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5020
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description shhsibgn "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3732
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start shhsibgn
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3308
- 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:716
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3364 -s 1148
  2⤵
  - Program crash
  PID:3372

C:\Windows\SysWOW64\shhsibgn\tnwgtwbn.exe
C:\Windows\SysWOW64\shhsibgn\tnwgtwbn.exe /d"C:\Users\Admin\AppData\Local\Temp\e8ed9b7f958491838d2b52374770643c_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3448
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1604
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3448 -s 516
  2⤵
  - Program crash
  PID:3676

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3364 -ip 3364
1⤵
PID:1844

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 196 -p 3448 -ip 3448
1⤵
PID:3132

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\tnwgtwbn.exe

Filesize
14.6MB

MD5
bdb4544589098522cc94ddbd31e2de09

SHA1
f345442949fa4671da8defe684e0d71296b79dc0

SHA256
3b91c90302c661074896ea8cf573d31ba722d2276301658f15aaaa3b1347a05e

SHA512
6d31641856b4576179fc258151d3c2cdf299dec2c043d806c4e741b257ab4c768e875654c38d43afec2613a95aab7bbdc3d430013995ecbab979389a0a2a8e98

Download Submit
memory/1604-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1604-15-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1604-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3364-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3364-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3364-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3364-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3364-8-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3364-1-0x00000000005D0000-0x00000000006D0000-memory.dmp

Filesize
1024KB

Download
memory/3448-11-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3448-12-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3448-18-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads