tofsee | e3692685f9a728e0daeea23f159484fd1009bf615126d51a29440dcf53ab0d42

General

Target

JaffaCakes118_e3692685f9a728e0daeea23f159484fd1009bf615126d51a29440dcf53ab0d42.exe
Size

184KB
MD5

31fc0122636001e76cca65cd85d28a7f
SHA1

9e42a8fb0214134f7312068cbfa4a1f663b629c2
SHA256

e3692685f9a728e0daeea23f159484fd1009bf615126d51a29440dcf53ab0d42
SHA512

5e0527691f54fc26e683fcf692d637678bc57aece088502ce24d2f3430eb908c50f36c99f8f423eaadbbd574ee1a4b6e7e157ebe346160adba6c2237094e9314
SSDEEP

3072:nkmEokfyW/Sshyd6OCbefqGKIti4KrTWssUPZPwTns9MUjYAYeL9hgC:n8okaW/SshhQijKiZrT3jPCUjmev

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
Tofsee family
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

pid	Process
2948	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\yatqnjcw\ImagePath = "C:\\Windows\\SysWOW64\\yatqnjcw\\ykfcjiiw.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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	JaffaCakes118_e3692685f9a728e0daeea23f159484fd1009bf615126d51a29440dcf53ab0d42.exe

Deletes itself 1 IoCs

pid	Process
2872	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3452	ykfcjiiw.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3452 set thread context of 2872	3452	ykfcjiiw.exe	98

Launches sc.exe 3 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
2204	sc.exe
2480	sc.exe
3620	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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

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

pid	pid_target	Process	procid_target
2200	3312	WerFault.exe	81
3588	3452	WerFault.exe	92

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ykfcjiiw.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_e3692685f9a728e0daeea23f159484fd1009bf615126d51a29440dcf53ab0d42.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3312 wrote to memory of 3860	3312	JaffaCakes118_e3692685f9a728e0daeea23f159484fd1009bf615126d51a29440dcf53ab0d42.exe	82
PID 3312 wrote to memory of 3860	3312	JaffaCakes118_e3692685f9a728e0daeea23f159484fd1009bf615126d51a29440dcf53ab0d42.exe	82
PID 3312 wrote to memory of 3860	3312	JaffaCakes118_e3692685f9a728e0daeea23f159484fd1009bf615126d51a29440dcf53ab0d42.exe	82
PID 3312 wrote to memory of 4500	3312	JaffaCakes118_e3692685f9a728e0daeea23f159484fd1009bf615126d51a29440dcf53ab0d42.exe	84
PID 3312 wrote to memory of 4500	3312	JaffaCakes118_e3692685f9a728e0daeea23f159484fd1009bf615126d51a29440dcf53ab0d42.exe	84
PID 3312 wrote to memory of 4500	3312	JaffaCakes118_e3692685f9a728e0daeea23f159484fd1009bf615126d51a29440dcf53ab0d42.exe	84
PID 3312 wrote to memory of 2204	3312	JaffaCakes118_e3692685f9a728e0daeea23f159484fd1009bf615126d51a29440dcf53ab0d42.exe	86
PID 3312 wrote to memory of 2204	3312	JaffaCakes118_e3692685f9a728e0daeea23f159484fd1009bf615126d51a29440dcf53ab0d42.exe	86
PID 3312 wrote to memory of 2204	3312	JaffaCakes118_e3692685f9a728e0daeea23f159484fd1009bf615126d51a29440dcf53ab0d42.exe	86
PID 3312 wrote to memory of 2480	3312	JaffaCakes118_e3692685f9a728e0daeea23f159484fd1009bf615126d51a29440dcf53ab0d42.exe	88
PID 3312 wrote to memory of 2480	3312	JaffaCakes118_e3692685f9a728e0daeea23f159484fd1009bf615126d51a29440dcf53ab0d42.exe	88
PID 3312 wrote to memory of 2480	3312	JaffaCakes118_e3692685f9a728e0daeea23f159484fd1009bf615126d51a29440dcf53ab0d42.exe	88
PID 3312 wrote to memory of 3620	3312	JaffaCakes118_e3692685f9a728e0daeea23f159484fd1009bf615126d51a29440dcf53ab0d42.exe	90
PID 3312 wrote to memory of 3620	3312	JaffaCakes118_e3692685f9a728e0daeea23f159484fd1009bf615126d51a29440dcf53ab0d42.exe	90
PID 3312 wrote to memory of 3620	3312	JaffaCakes118_e3692685f9a728e0daeea23f159484fd1009bf615126d51a29440dcf53ab0d42.exe	90
PID 3312 wrote to memory of 2948	3312	JaffaCakes118_e3692685f9a728e0daeea23f159484fd1009bf615126d51a29440dcf53ab0d42.exe	93
PID 3312 wrote to memory of 2948	3312	JaffaCakes118_e3692685f9a728e0daeea23f159484fd1009bf615126d51a29440dcf53ab0d42.exe	93
PID 3312 wrote to memory of 2948	3312	JaffaCakes118_e3692685f9a728e0daeea23f159484fd1009bf615126d51a29440dcf53ab0d42.exe	93
PID 3452 wrote to memory of 2872	3452	ykfcjiiw.exe	98
PID 3452 wrote to memory of 2872	3452	ykfcjiiw.exe	98
PID 3452 wrote to memory of 2872	3452	ykfcjiiw.exe	98
PID 3452 wrote to memory of 2872	3452	ykfcjiiw.exe	98
PID 3452 wrote to memory of 2872	3452	ykfcjiiw.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e3692685f9a728e0daeea23f159484fd1009bf615126d51a29440dcf53ab0d42.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e3692685f9a728e0daeea23f159484fd1009bf615126d51a29440dcf53ab0d42.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3312
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yatqnjcw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3860
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ykfcjiiw.exe" C:\Windows\SysWOW64\yatqnjcw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4500
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create yatqnjcw binPath= "C:\Windows\SysWOW64\yatqnjcw\ykfcjiiw.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e3692685f9a728e0daeea23f159484fd1009bf615126d51a29440dcf53ab0d42.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2204
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description yatqnjcw "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2480
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start yatqnjcw
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3620
- 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:2948
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3312 -s 1220
  2⤵
  - Program crash
  PID:2200

C:\Windows\SysWOW64\yatqnjcw\ykfcjiiw.exe
C:\Windows\SysWOW64\yatqnjcw\ykfcjiiw.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e3692685f9a728e0daeea23f159484fd1009bf615126d51a29440dcf53ab0d42.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3452
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2872
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3452 -s 552
  2⤵
  - Program crash
  PID:3588

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3312 -ip 3312
1⤵
PID:2008

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3452 -ip 3452
1⤵
PID:3040

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\ykfcjiiw.exe

Filesize
14.7MB

MD5
ac39783adc712463588c1a17ebf1dfcd

SHA1
55fde0fb78d15a2c7ce37360c85186ecd97912a1

SHA256
c6ce25dbc26800453adc4325a24afda5f2145c41caa74056bb5bba1d8b0faf91

SHA512
faa7b5d0ef24d274e82bf5faae1b2228984b3055583c4fb44d41d8aec057a446989d0287387de8817794e53a107f8c7d33f84f8cceab279c8ad4377354fc161d

Download Submit
memory/2872-14-0x00000000008C0000-0x00000000008D5000-memory.dmp

Filesize
84KB

Download
memory/2872-17-0x00000000008C0000-0x00000000008D5000-memory.dmp

Filesize
84KB

Download
memory/2872-16-0x00000000008C0000-0x00000000008D5000-memory.dmp

Filesize
84KB

Download
memory/3312-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3312-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3312-1-0x0000000000630000-0x0000000000730000-memory.dmp

Filesize
1024KB

Download
memory/3312-8-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/3312-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3312-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3452-11-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/3452-12-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/3452-13-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/3452-19-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads