tofsee | 364ae9c5cdf3bf4e477155a84d1a18d43c74074891819cff85d9741ad5a9f5c3

General

Target

JaffaCakes118_364ae9c5cdf3bf4e477155a84d1a18d43c74074891819cff85d9741ad5a9f5c3.exe
Size

295KB
MD5

bf217862842c46b8757f366e820a86f0
SHA1

8a0f595178acd3e2ccda4c7d50d18cd76aa8eb2e
SHA256

364ae9c5cdf3bf4e477155a84d1a18d43c74074891819cff85d9741ad5a9f5c3
SHA512

357b54ce1b33dcaa7df998154cb8c0d0507d23b350428f2377f6c68be05f07af117fa3d4b460f9874da5acee4eb5805d0e58b7ae0faf41af64f348c275a2a02b
SSDEEP

6144:tEPes46o9a0hKGJXjasSXuZet0yy8coHPk85Gm:tG46o9a8JXGsSXuZet0yy8c185z

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
3492	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\vjgewayr\ImagePath = "C:\\Windows\\SysWOW64\\vjgewayr\\cvgwhexq.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	JaffaCakes118_364ae9c5cdf3bf4e477155a84d1a18d43c74074891819cff85d9741ad5a9f5c3.exe

Deletes itself 1 IoCs

pid	Process
2932	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1496	cvgwhexq.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1496 set thread context of 2932	1496	cvgwhexq.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
1120	sc.exe
4148	sc.exe
3004	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
2820	3996	WerFault.exe	81
4424	1496	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	JaffaCakes118_364ae9c5cdf3bf4e477155a84d1a18d43c74074891819cff85d9741ad5a9f5c3.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cvgwhexq.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3996 wrote to memory of 784	3996	JaffaCakes118_364ae9c5cdf3bf4e477155a84d1a18d43c74074891819cff85d9741ad5a9f5c3.exe	82
PID 3996 wrote to memory of 784	3996	JaffaCakes118_364ae9c5cdf3bf4e477155a84d1a18d43c74074891819cff85d9741ad5a9f5c3.exe	82
PID 3996 wrote to memory of 784	3996	JaffaCakes118_364ae9c5cdf3bf4e477155a84d1a18d43c74074891819cff85d9741ad5a9f5c3.exe	82
PID 3996 wrote to memory of 2660	3996	JaffaCakes118_364ae9c5cdf3bf4e477155a84d1a18d43c74074891819cff85d9741ad5a9f5c3.exe	84
PID 3996 wrote to memory of 2660	3996	JaffaCakes118_364ae9c5cdf3bf4e477155a84d1a18d43c74074891819cff85d9741ad5a9f5c3.exe	84
PID 3996 wrote to memory of 2660	3996	JaffaCakes118_364ae9c5cdf3bf4e477155a84d1a18d43c74074891819cff85d9741ad5a9f5c3.exe	84
PID 3996 wrote to memory of 1120	3996	JaffaCakes118_364ae9c5cdf3bf4e477155a84d1a18d43c74074891819cff85d9741ad5a9f5c3.exe	86
PID 3996 wrote to memory of 1120	3996	JaffaCakes118_364ae9c5cdf3bf4e477155a84d1a18d43c74074891819cff85d9741ad5a9f5c3.exe	86
PID 3996 wrote to memory of 1120	3996	JaffaCakes118_364ae9c5cdf3bf4e477155a84d1a18d43c74074891819cff85d9741ad5a9f5c3.exe	86
PID 3996 wrote to memory of 4148	3996	JaffaCakes118_364ae9c5cdf3bf4e477155a84d1a18d43c74074891819cff85d9741ad5a9f5c3.exe	88
PID 3996 wrote to memory of 4148	3996	JaffaCakes118_364ae9c5cdf3bf4e477155a84d1a18d43c74074891819cff85d9741ad5a9f5c3.exe	88
PID 3996 wrote to memory of 4148	3996	JaffaCakes118_364ae9c5cdf3bf4e477155a84d1a18d43c74074891819cff85d9741ad5a9f5c3.exe	88
PID 3996 wrote to memory of 3004	3996	JaffaCakes118_364ae9c5cdf3bf4e477155a84d1a18d43c74074891819cff85d9741ad5a9f5c3.exe	90
PID 3996 wrote to memory of 3004	3996	JaffaCakes118_364ae9c5cdf3bf4e477155a84d1a18d43c74074891819cff85d9741ad5a9f5c3.exe	90
PID 3996 wrote to memory of 3004	3996	JaffaCakes118_364ae9c5cdf3bf4e477155a84d1a18d43c74074891819cff85d9741ad5a9f5c3.exe	90
PID 3996 wrote to memory of 3492	3996	JaffaCakes118_364ae9c5cdf3bf4e477155a84d1a18d43c74074891819cff85d9741ad5a9f5c3.exe	93
PID 3996 wrote to memory of 3492	3996	JaffaCakes118_364ae9c5cdf3bf4e477155a84d1a18d43c74074891819cff85d9741ad5a9f5c3.exe	93
PID 3996 wrote to memory of 3492	3996	JaffaCakes118_364ae9c5cdf3bf4e477155a84d1a18d43c74074891819cff85d9741ad5a9f5c3.exe	93
PID 1496 wrote to memory of 2932	1496	cvgwhexq.exe	98
PID 1496 wrote to memory of 2932	1496	cvgwhexq.exe	98
PID 1496 wrote to memory of 2932	1496	cvgwhexq.exe	98
PID 1496 wrote to memory of 2932	1496	cvgwhexq.exe	98
PID 1496 wrote to memory of 2932	1496	cvgwhexq.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_364ae9c5cdf3bf4e477155a84d1a18d43c74074891819cff85d9741ad5a9f5c3.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_364ae9c5cdf3bf4e477155a84d1a18d43c74074891819cff85d9741ad5a9f5c3.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3996
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vjgewayr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:784
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cvgwhexq.exe" C:\Windows\SysWOW64\vjgewayr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2660
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create vjgewayr binPath= "C:\Windows\SysWOW64\vjgewayr\cvgwhexq.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_364ae9c5cdf3bf4e477155a84d1a18d43c74074891819cff85d9741ad5a9f5c3.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1120
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description vjgewayr "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4148
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start vjgewayr
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3004
- 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:3492
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3996 -s 796
  2⤵
  - Program crash
  PID:2820

C:\Windows\SysWOW64\vjgewayr\cvgwhexq.exe
C:\Windows\SysWOW64\vjgewayr\cvgwhexq.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_364ae9c5cdf3bf4e477155a84d1a18d43c74074891819cff85d9741ad5a9f5c3.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1496
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2932
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1496 -s 512
  2⤵
  - Program crash
  PID:4424

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3996 -ip 3996
1⤵
PID:1336

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 1496 -ip 1496
1⤵
PID:3892

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\cvgwhexq.exe

Filesize
12.4MB

MD5
d4c12221e36349a131c1451f124353af

SHA1
037126b7243780f675922f8d91d4b253d877d04f

SHA256
38e450f8a886cd95ca1da3aaa2eb10fb5455193e092bde69cef51afb95c65ae6

SHA512
7425d34aa27ab4d4910d318cb79e6e3806944721776b609f39f68b50ca166a82db884fec980823022c7c3d156c0aa3e40f6f310e8c4519205ebeec932d480948

Download Submit
memory/1496-15-0x0000000000400000-0x0000000001C00000-memory.dmp

Filesize
24.0MB

Download
memory/2932-11-0x0000000000610000-0x0000000000625000-memory.dmp

Filesize
84KB

Download
memory/2932-13-0x0000000000610000-0x0000000000625000-memory.dmp

Filesize
84KB

Download
memory/2932-14-0x0000000000610000-0x0000000000625000-memory.dmp

Filesize
84KB

Download
memory/3996-1-0x0000000001D50000-0x0000000001E50000-memory.dmp

Filesize
1024KB

Download
memory/3996-2-0x0000000003810000-0x0000000003823000-memory.dmp

Filesize
76KB

Download
memory/3996-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3996-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3996-8-0x0000000003810000-0x0000000003823000-memory.dmp

Filesize
76KB

Download
memory/3996-7-0x0000000000400000-0x0000000001C00000-memory.dmp

Filesize
24.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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