tofsee | 57505cf98c89236e3365f9c9087630b641f32d69d6e7184fe1e5c12093b3d9c0

General

Target

JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe
Size

13.1MB
MD5

a18891ac4c86dc5662155b36d349f1d4
SHA1

bead486f2e55ddb197c14cbb8d53c9152ae6442e
SHA256

57505cf98c89236e3365f9c9087630b641f32d69d6e7184fe1e5c12093b3d9c0
SHA512

032785a8ff2dac819839617454e8b10312f00202efb289698eeb2ebf9507429b30923e9414c12abcfd2e8862d9bbd3bf2a97590cc816701e5a8dba3ced08d6dc
SSDEEP

393216:4555555555555555555555555555555555555555555555555555555555555557:45555555555555555555555555555557

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
1180	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\cnyezzjs\ImagePath = "C:\\Windows\\SysWOW64\\cnyezzjs\\spafdnkh.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_a18891ac4c86dc5662155b36d349f1d4.exe

Deletes itself 1 IoCs

pid	Process
4800	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1168	spafdnkh.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1168 set thread context of 4800	1168	spafdnkh.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
4556	sc.exe
640	sc.exe
1524	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
376	4856	WerFault.exe	81
1508	1168	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	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	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	spafdnkh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4856 wrote to memory of 384	4856	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	82
PID 4856 wrote to memory of 384	4856	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	82
PID 4856 wrote to memory of 384	4856	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	82
PID 4856 wrote to memory of 4404	4856	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	84
PID 4856 wrote to memory of 4404	4856	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	84
PID 4856 wrote to memory of 4404	4856	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	84
PID 4856 wrote to memory of 4556	4856	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	86
PID 4856 wrote to memory of 4556	4856	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	86
PID 4856 wrote to memory of 4556	4856	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	86
PID 4856 wrote to memory of 640	4856	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	88
PID 4856 wrote to memory of 640	4856	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	88
PID 4856 wrote to memory of 640	4856	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	88
PID 4856 wrote to memory of 1524	4856	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	90
PID 4856 wrote to memory of 1524	4856	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	90
PID 4856 wrote to memory of 1524	4856	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	90
PID 4856 wrote to memory of 1180	4856	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	93
PID 4856 wrote to memory of 1180	4856	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	93
PID 4856 wrote to memory of 1180	4856	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	93
PID 1168 wrote to memory of 4800	1168	spafdnkh.exe	98
PID 1168 wrote to memory of 4800	1168	spafdnkh.exe	98
PID 1168 wrote to memory of 4800	1168	spafdnkh.exe	98
PID 1168 wrote to memory of 4800	1168	spafdnkh.exe	98
PID 1168 wrote to memory of 4800	1168	spafdnkh.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4856
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cnyezzjs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:384
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\spafdnkh.exe" C:\Windows\SysWOW64\cnyezzjs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4404
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create cnyezzjs binPath= "C:\Windows\SysWOW64\cnyezzjs\spafdnkh.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4556
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description cnyezzjs "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:640
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start cnyezzjs
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1524
- 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:1180
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4856 -s 1044
  2⤵
  - Program crash
  PID:376

C:\Windows\SysWOW64\cnyezzjs\spafdnkh.exe
C:\Windows\SysWOW64\cnyezzjs\spafdnkh.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1168
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4800
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1168 -s 516
  2⤵
  - Program crash
  PID:1508

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4856 -ip 4856
1⤵
PID:1440

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 1168 -ip 1168
1⤵
PID:4996

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\spafdnkh.exe

Filesize
12.6MB

MD5
6a5fa1cda940355c489b90619a4a0c4e

SHA1
f77e58a1090ce836b93a92ce44db340c70b3d3b6

SHA256
66eae4148a9672f3c2d827ff0c4816d185ce64e9ef71c5f15f44d178baa3b880

SHA512
36f706a4de596fd03603bebdb6235dedeabf70eab4a8f8a98cf8051ca019394e7b9ae746ae9f88eb99173e40075bf8e2b5583481f94a559380084b69e8dafd94

Download Submit
memory/1168-11-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1168-12-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1168-13-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1168-18-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4800-14-0x0000000000180000-0x0000000000195000-memory.dmp

Filesize
84KB

Download
memory/4800-16-0x0000000000180000-0x0000000000195000-memory.dmp

Filesize
84KB

Download
memory/4800-17-0x0000000000180000-0x0000000000195000-memory.dmp

Filesize
84KB

Download
memory/4856-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4856-2-0x0000000002200000-0x0000000002213000-memory.dmp

Filesize
76KB

Download
memory/4856-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4856-9-0x0000000002200000-0x0000000002213000-memory.dmp

Filesize
76KB

Download
memory/4856-8-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4856-1-0x0000000000600000-0x0000000000700000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads