tofsee | da14cd2e1f896bcd043fce50c512500fa036a68be25bf744dbed94c78e971b87

General

Target

JaffaCakes118_da14cd2e1f896bcd043fce50c512500fa036a68be25bf744dbed94c78e971b87.exe
Size

254KB
MD5

e69ff98ea2f9d45fc961b31e8225dfff
SHA1

0e30d3b1d5a120bef7d9ac10ec847c31dde82765
SHA256

da14cd2e1f896bcd043fce50c512500fa036a68be25bf744dbed94c78e971b87
SHA512

62d10ec5ba321c2f04587a1a4255e1c2395557ce46a39866823b807f4a7062c6bb7309c77bb82e08b89526e3fdce157b9d1df25c540d0e2ef3276e09be43bf58
SSDEEP

3072:v0Dpf7yqdUqSSWixrhMMp5JvpmzI5RjRMF7wgBdOXCMueDbhacvPhEwrV56I/:YS3iIMpbpmz0jiFTdOXJu01dvZRN/

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.ru

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
3344	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\ctclyjut\ImagePath = "C:\\Windows\\SysWOW64\\ctclyjut\\yujjovbs.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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	JaffaCakes118_da14cd2e1f896bcd043fce50c512500fa036a68be25bf744dbed94c78e971b87.exe

Deletes itself 1 IoCs

pid	Process
3732	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3360	yujjovbs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3360 set thread context of 3732	3360	yujjovbs.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
3316	sc.exe
1004	sc.exe
1892	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
3016	4540	WerFault.exe	81
4424	3360	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	sc.exe
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	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	yujjovbs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_da14cd2e1f896bcd043fce50c512500fa036a68be25bf744dbed94c78e971b87.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4540 wrote to memory of 3208	4540	JaffaCakes118_da14cd2e1f896bcd043fce50c512500fa036a68be25bf744dbed94c78e971b87.exe	82
PID 4540 wrote to memory of 3208	4540	JaffaCakes118_da14cd2e1f896bcd043fce50c512500fa036a68be25bf744dbed94c78e971b87.exe	82
PID 4540 wrote to memory of 3208	4540	JaffaCakes118_da14cd2e1f896bcd043fce50c512500fa036a68be25bf744dbed94c78e971b87.exe	82
PID 4540 wrote to memory of 3396	4540	JaffaCakes118_da14cd2e1f896bcd043fce50c512500fa036a68be25bf744dbed94c78e971b87.exe	84
PID 4540 wrote to memory of 3396	4540	JaffaCakes118_da14cd2e1f896bcd043fce50c512500fa036a68be25bf744dbed94c78e971b87.exe	84
PID 4540 wrote to memory of 3396	4540	JaffaCakes118_da14cd2e1f896bcd043fce50c512500fa036a68be25bf744dbed94c78e971b87.exe	84
PID 4540 wrote to memory of 3316	4540	JaffaCakes118_da14cd2e1f896bcd043fce50c512500fa036a68be25bf744dbed94c78e971b87.exe	86
PID 4540 wrote to memory of 3316	4540	JaffaCakes118_da14cd2e1f896bcd043fce50c512500fa036a68be25bf744dbed94c78e971b87.exe	86
PID 4540 wrote to memory of 3316	4540	JaffaCakes118_da14cd2e1f896bcd043fce50c512500fa036a68be25bf744dbed94c78e971b87.exe	86
PID 4540 wrote to memory of 1004	4540	JaffaCakes118_da14cd2e1f896bcd043fce50c512500fa036a68be25bf744dbed94c78e971b87.exe	88
PID 4540 wrote to memory of 1004	4540	JaffaCakes118_da14cd2e1f896bcd043fce50c512500fa036a68be25bf744dbed94c78e971b87.exe	88
PID 4540 wrote to memory of 1004	4540	JaffaCakes118_da14cd2e1f896bcd043fce50c512500fa036a68be25bf744dbed94c78e971b87.exe	88
PID 4540 wrote to memory of 1892	4540	JaffaCakes118_da14cd2e1f896bcd043fce50c512500fa036a68be25bf744dbed94c78e971b87.exe	90
PID 4540 wrote to memory of 1892	4540	JaffaCakes118_da14cd2e1f896bcd043fce50c512500fa036a68be25bf744dbed94c78e971b87.exe	90
PID 4540 wrote to memory of 1892	4540	JaffaCakes118_da14cd2e1f896bcd043fce50c512500fa036a68be25bf744dbed94c78e971b87.exe	90
PID 4540 wrote to memory of 3344	4540	JaffaCakes118_da14cd2e1f896bcd043fce50c512500fa036a68be25bf744dbed94c78e971b87.exe	93
PID 4540 wrote to memory of 3344	4540	JaffaCakes118_da14cd2e1f896bcd043fce50c512500fa036a68be25bf744dbed94c78e971b87.exe	93
PID 4540 wrote to memory of 3344	4540	JaffaCakes118_da14cd2e1f896bcd043fce50c512500fa036a68be25bf744dbed94c78e971b87.exe	93
PID 3360 wrote to memory of 3732	3360	yujjovbs.exe	98
PID 3360 wrote to memory of 3732	3360	yujjovbs.exe	98
PID 3360 wrote to memory of 3732	3360	yujjovbs.exe	98
PID 3360 wrote to memory of 3732	3360	yujjovbs.exe	98
PID 3360 wrote to memory of 3732	3360	yujjovbs.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_da14cd2e1f896bcd043fce50c512500fa036a68be25bf744dbed94c78e971b87.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_da14cd2e1f896bcd043fce50c512500fa036a68be25bf744dbed94c78e971b87.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4540
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ctclyjut\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3208
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\yujjovbs.exe" C:\Windows\SysWOW64\ctclyjut\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3396
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ctclyjut binPath= "C:\Windows\SysWOW64\ctclyjut\yujjovbs.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_da14cd2e1f896bcd043fce50c512500fa036a68be25bf744dbed94c78e971b87.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3316
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ctclyjut "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1004
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ctclyjut
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1892
- 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:3344
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4540 -s 896
  2⤵
  - Program crash
  PID:3016

C:\Windows\SysWOW64\ctclyjut\yujjovbs.exe
C:\Windows\SysWOW64\ctclyjut\yujjovbs.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_da14cd2e1f896bcd043fce50c512500fa036a68be25bf744dbed94c78e971b87.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3360
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3732
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3360 -s 528
  2⤵
  - Program crash
  PID:4424

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4540 -ip 4540
1⤵
PID:2408

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 3360 -ip 3360
1⤵
PID:1136

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\yujjovbs.exe

Filesize
12.9MB

MD5
b93b165c0fdd4d09b16e37f8255c0ce3

SHA1
681f912ecd9f3d08b39247012eaaf81e682ccb05

SHA256
403b8b5abba9895e472f3bd461f21c2f2845eb06a35be2a74f0ab7aa8be4b31b

SHA512
b9a9d913e9a1ce3d6b4950e36b3dff193e6c60a1e934b76dd8c08677cfbc6788e683fab117495f17cf2e94818ff62d81521daf6a98dafd7d6b879c6213cf67ef

Download Submit
memory/3360-15-0x0000000000400000-0x0000000001085000-memory.dmp

Filesize
12.5MB

Download
memory/3732-11-0x0000000000D90000-0x0000000000DA5000-memory.dmp

Filesize
84KB

Download
memory/3732-13-0x0000000000D90000-0x0000000000DA5000-memory.dmp

Filesize
84KB

Download
memory/3732-14-0x0000000000D90000-0x0000000000DA5000-memory.dmp

Filesize
84KB

Download
memory/4540-1-0x00000000012C0000-0x00000000013C0000-memory.dmp

Filesize
1024KB

Download
memory/4540-2-0x00000000011F0000-0x0000000001203000-memory.dmp

Filesize
76KB

Download
memory/4540-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4540-8-0x00000000011F0000-0x0000000001203000-memory.dmp

Filesize
76KB

Download
memory/4540-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4540-7-0x0000000000400000-0x0000000001085000-memory.dmp

Filesize
12.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads