tofsee | 277f281214a01778ea5c17962dba15c395a92a4e9e54c63c97439d2e11336688

General

Target

11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe
Size

14.7MB
MD5

11442e761c4488c3e4e1d1176ec8ee45
SHA1

5b8927c26a6b5795a7e8f85ac1edfc8293960b27
SHA256

277f281214a01778ea5c17962dba15c395a92a4e9e54c63c97439d2e11336688
SHA512

7248eb6ab35462704a316090fbbf70bbfd202f75062166e3659820cd009343334a9dd4bf00b640ab0f9bdbf35085abc1295ec5ce78e5485984646b3a864b203a
SSDEEP

196608:JX6666666666666666666666666666666666666666666666666666666666666y:J

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

2412 netsh.exe

pid	process
2412	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\dnrdrlyb\ImagePath = "C:\\Windows\\SysWOW64\\dnrdrlyb\\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:

11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1368 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

fvvvkbhz.exe

pid process

1240 fvvvkbhz.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

fvvvkbhz.exe

description pid process target process

PID 1240 set thread context of 1368 1240 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

1832 sc.exe
2176 sc.exe
3696 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1368	svchost.exe

pid	process
1240	fvvvkbhz.exe

description	pid	process	target process
PID 1240 set thread context of 1368	1240	fvvvkbhz.exe	svchost.exe

pid	process
1832	sc.exe
2176	sc.exe
3696	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

1428 5064 WerFault.exe 11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe
736 1240 WerFault.exe fvvvkbhz.exe

pid	pid_target	process	target process
1428	5064	WerFault.exe	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe
736	1240	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:

sc.exesvchost.execmd.execmd.exesc.exesc.exenetsh.exefvvvkbhz.exe11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.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	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	fvvvkbhz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exefvvvkbhz.exe

description	pid	process	target process
PID 5064 wrote to memory of 3004	5064	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	cmd.exe
PID 5064 wrote to memory of 3004	5064	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	cmd.exe
PID 5064 wrote to memory of 3004	5064	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	cmd.exe
PID 5064 wrote to memory of 2876	5064	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	cmd.exe
PID 5064 wrote to memory of 2876	5064	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	cmd.exe
PID 5064 wrote to memory of 2876	5064	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	cmd.exe
PID 5064 wrote to memory of 1832	5064	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	sc.exe
PID 5064 wrote to memory of 1832	5064	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	sc.exe
PID 5064 wrote to memory of 1832	5064	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	sc.exe
PID 5064 wrote to memory of 2176	5064	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	sc.exe
PID 5064 wrote to memory of 2176	5064	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	sc.exe
PID 5064 wrote to memory of 2176	5064	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	sc.exe
PID 5064 wrote to memory of 3696	5064	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	sc.exe
PID 5064 wrote to memory of 3696	5064	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	sc.exe
PID 5064 wrote to memory of 3696	5064	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	sc.exe
PID 5064 wrote to memory of 2412	5064	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	netsh.exe
PID 5064 wrote to memory of 2412	5064	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	netsh.exe
PID 5064 wrote to memory of 2412	5064	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	netsh.exe
PID 1240 wrote to memory of 1368	1240	fvvvkbhz.exe	svchost.exe
PID 1240 wrote to memory of 1368	1240	fvvvkbhz.exe	svchost.exe
PID 1240 wrote to memory of 1368	1240	fvvvkbhz.exe	svchost.exe
PID 1240 wrote to memory of 1368	1240	fvvvkbhz.exe	svchost.exe
PID 1240 wrote to memory of 1368	1240	fvvvkbhz.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5064

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dnrdrlyb\
2⤵
- System Location Discovery: System Language Discovery
PID:3004

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fvvvkbhz.exe" C:\Windows\SysWOW64\dnrdrlyb\
2⤵
- System Location Discovery: System Language Discovery
PID:2876

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create dnrdrlyb binPath= "C:\Windows\SysWOW64\dnrdrlyb\fvvvkbhz.exe /d\"C:\Users\Admin\AppData\Local\Temp\11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:1832

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description dnrdrlyb "wifi internet conection"
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:2176

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start dnrdrlyb
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:3696

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:2412

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 5064 -s 1036
2⤵
- Program crash
PID:1428

C:\Windows\SysWOW64\dnrdrlyb\fvvvkbhz.exe
C:\Windows\SysWOW64\dnrdrlyb\fvvvkbhz.exe /d"C:\Users\Admin\AppData\Local\Temp\11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1240

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
- System Location Discovery: System Language Discovery
PID:1368

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1240 -s 512
2⤵
- Program crash
PID:736

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 5064 -ip 5064
1⤵
PID:2396

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 1240 -ip 1240
1⤵
PID:2020

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
10.6MB

MD5
b8742d862916ecb485b330f6e666b358

SHA1
67e24bff48dffa6834d2a434f3df8a0b91161f3d

SHA256
a07792e94fef9463e4e31411f9f2449c2fbd528e838569fe155644fab7414523

SHA512
84aa4751526bf1e1663a9dd2dfc733c10d66b667bd45629a95024974c8fe01126336485ab1d13893e83bec9a94bca07636042894269c8191f5457263f6918294

Download Submit
memory/1240-18-0x0000000000400000-0x000000000086F000-memory.dmp

Filesize
4.4MB

Download
memory/1240-8-0x0000000000400000-0x000000000086F000-memory.dmp

Filesize
4.4MB

Download
memory/1240-12-0x0000000000400000-0x000000000086F000-memory.dmp

Filesize
4.4MB

Download
memory/1368-15-0x0000000000DD0000-0x0000000000DE5000-memory.dmp

Filesize
84KB

Download
memory/1368-16-0x0000000000DD0000-0x0000000000DE5000-memory.dmp

Filesize
84KB

Download
memory/1368-13-0x0000000000DD0000-0x0000000000DE5000-memory.dmp

Filesize
84KB

Download
memory/5064-11-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5064-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/5064-10-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/5064-9-0x0000000000400000-0x000000000086F000-memory.dmp

Filesize
4.4MB

Download
memory/5064-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5064-1-0x0000000000B60000-0x0000000000C60000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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