tofsee | 740fe2c8e4dd0b8d589b35781d97b36d73e919742553910eab419f314bbd2650

General

Target

adbd70490450994bf9c1055a86213eaa_JaffaCakes118.exe
Size

11.5MB
MD5

adbd70490450994bf9c1055a86213eaa
SHA1

232eb1058e2bca78dc7fddd7218329b4a5e7638c
SHA256

740fe2c8e4dd0b8d589b35781d97b36d73e919742553910eab419f314bbd2650
SHA512

107e9c49de8eddb0681d81b9bedd82aa79e3a940e7929a40aa6473d7225fcaeaf48e82f9bcff50c3d95adb6d6d9216a17d7274f49bbf7d708e932cbcb8221526
SSDEEP

12288:TvSzTpTpTpTpTpTpTpTpTpTpTpTpTpTpTpTpTpTpTpTpTpTpTpTpTpTpTpTpTpTt:2z

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
4140	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\pofxkqsn\ImagePath = "C:\\Windows\\SysWOW64\\pofxkqsn\\vtiuokvl.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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	adbd70490450994bf9c1055a86213eaa_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
4932	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4908	vtiuokvl.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4908 set thread context of 4932	4908	vtiuokvl.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
2380	sc.exe
1600	sc.exe
4172	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4728	2524	WerFault.exe	81
812	4908	WerFault.exe	96

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	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vtiuokvl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	adbd70490450994bf9c1055a86213eaa_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2524 wrote to memory of 4644	2524	adbd70490450994bf9c1055a86213eaa_JaffaCakes118.exe	84
PID 2524 wrote to memory of 4644	2524	adbd70490450994bf9c1055a86213eaa_JaffaCakes118.exe	84
PID 2524 wrote to memory of 4644	2524	adbd70490450994bf9c1055a86213eaa_JaffaCakes118.exe	84
PID 2524 wrote to memory of 1144	2524	adbd70490450994bf9c1055a86213eaa_JaffaCakes118.exe	88
PID 2524 wrote to memory of 1144	2524	adbd70490450994bf9c1055a86213eaa_JaffaCakes118.exe	88
PID 2524 wrote to memory of 1144	2524	adbd70490450994bf9c1055a86213eaa_JaffaCakes118.exe	88
PID 2524 wrote to memory of 2380	2524	adbd70490450994bf9c1055a86213eaa_JaffaCakes118.exe	90
PID 2524 wrote to memory of 2380	2524	adbd70490450994bf9c1055a86213eaa_JaffaCakes118.exe	90
PID 2524 wrote to memory of 2380	2524	adbd70490450994bf9c1055a86213eaa_JaffaCakes118.exe	90
PID 2524 wrote to memory of 1600	2524	adbd70490450994bf9c1055a86213eaa_JaffaCakes118.exe	92
PID 2524 wrote to memory of 1600	2524	adbd70490450994bf9c1055a86213eaa_JaffaCakes118.exe	92
PID 2524 wrote to memory of 1600	2524	adbd70490450994bf9c1055a86213eaa_JaffaCakes118.exe	92
PID 2524 wrote to memory of 4172	2524	adbd70490450994bf9c1055a86213eaa_JaffaCakes118.exe	94
PID 2524 wrote to memory of 4172	2524	adbd70490450994bf9c1055a86213eaa_JaffaCakes118.exe	94
PID 2524 wrote to memory of 4172	2524	adbd70490450994bf9c1055a86213eaa_JaffaCakes118.exe	94
PID 2524 wrote to memory of 4140	2524	adbd70490450994bf9c1055a86213eaa_JaffaCakes118.exe	97
PID 2524 wrote to memory of 4140	2524	adbd70490450994bf9c1055a86213eaa_JaffaCakes118.exe	97
PID 2524 wrote to memory of 4140	2524	adbd70490450994bf9c1055a86213eaa_JaffaCakes118.exe	97
PID 4908 wrote to memory of 4932	4908	vtiuokvl.exe	103
PID 4908 wrote to memory of 4932	4908	vtiuokvl.exe	103
PID 4908 wrote to memory of 4932	4908	vtiuokvl.exe	103
PID 4908 wrote to memory of 4932	4908	vtiuokvl.exe	103
PID 4908 wrote to memory of 4932	4908	vtiuokvl.exe	103

C:\Users\Admin\AppData\Local\Temp\adbd70490450994bf9c1055a86213eaa_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\adbd70490450994bf9c1055a86213eaa_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2524
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pofxkqsn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4644
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vtiuokvl.exe" C:\Windows\SysWOW64\pofxkqsn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1144
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create pofxkqsn binPath= "C:\Windows\SysWOW64\pofxkqsn\vtiuokvl.exe /d\"C:\Users\Admin\AppData\Local\Temp\adbd70490450994bf9c1055a86213eaa_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2380
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description pofxkqsn "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1600
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start pofxkqsn
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4172
- 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:4140
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2524 -s 1236
  2⤵
  - Program crash
  PID:4728

C:\Windows\SysWOW64\pofxkqsn\vtiuokvl.exe
C:\Windows\SysWOW64\pofxkqsn\vtiuokvl.exe /d"C:\Users\Admin\AppData\Local\Temp\adbd70490450994bf9c1055a86213eaa_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4908
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4932
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4908 -s 512
  2⤵
  - Program crash
  PID:812

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2524 -ip 2524
1⤵
PID:1956

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4908 -ip 4908
1⤵
PID:1028

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\vtiuokvl.exe

Filesize
14.2MB

MD5
663cf3b9fc476c47ff9fc1c154749721

SHA1
0ff9126154f5458b2c9e2e319d200d32f0278eec

SHA256
fca2ca17a48c8f84328af42027710430472c6144ec1ea052abbb47ba51441b01

SHA512
9500ae2defe1d1d8fd9f89d595a3abe1fbbf084f48f89bcd473c6c03db854035ca48168e2f18b441f87bb2213a94434b256a3f695aeb80c6b1f589da2885f938

Download Submit
memory/2524-9-0x0000000002200000-0x0000000002213000-memory.dmp

Filesize
76KB

Download
memory/2524-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2524-2-0x0000000002200000-0x0000000002213000-memory.dmp

Filesize
76KB

Download
memory/2524-8-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/2524-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2524-1-0x0000000000760000-0x0000000000860000-memory.dmp

Filesize
1024KB

Download
memory/4908-11-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/4908-13-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/4908-12-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/4908-18-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/4932-14-0x00000000006E0000-0x00000000006F5000-memory.dmp

Filesize
84KB

Download
memory/4932-16-0x00000000006E0000-0x00000000006F5000-memory.dmp

Filesize
84KB

Download
memory/4932-17-0x00000000006E0000-0x00000000006F5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads