tofsee | 725942837d07ecacfd205166ae30d8286620d8f3ccbcc9a76b03c32ec0db9e51

General

Target

JaffaCakes118_5a9ef809fc37070083a115aa190ef1f1.exe
Size

10.0MB
MD5

5a9ef809fc37070083a115aa190ef1f1
SHA1

521c99511375bf9e2e2895885426fc61ead1dd1a
SHA256

725942837d07ecacfd205166ae30d8286620d8f3ccbcc9a76b03c32ec0db9e51
SHA512

155c9dd52fd34d2d54661ab6c8094dbe4ea2022dbb582ec7c4032950c5b07c446a3cde4169ea66d5c38bd8876a3d71577c54cffbb14dfe324568c437f92548cc
SSDEEP

12288:XExmZ6o10cbFU5tFU5tFU5tFU5tFU5tFU5tFU5tFU5tFU5tFU5tFU5tFU5tFU5ts:XEx27

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
2060	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\ejqyabqs\ImagePath = "C:\\Windows\\SysWOW64\\ejqyabqs\\cfygegoy.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_5a9ef809fc37070083a115aa190ef1f1.exe

Deletes itself 1 IoCs

pid	Process
2944	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4656	cfygegoy.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4656 set thread context of 2944	4656	cfygegoy.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
4468	sc.exe
2404	sc.exe
4188	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3272	3860	WerFault.exe	81

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	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	cfygegoy.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_5a9ef809fc37070083a115aa190ef1f1.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3860 wrote to memory of 3732	3860	JaffaCakes118_5a9ef809fc37070083a115aa190ef1f1.exe	82
PID 3860 wrote to memory of 3732	3860	JaffaCakes118_5a9ef809fc37070083a115aa190ef1f1.exe	82
PID 3860 wrote to memory of 3732	3860	JaffaCakes118_5a9ef809fc37070083a115aa190ef1f1.exe	82
PID 3860 wrote to memory of 4372	3860	JaffaCakes118_5a9ef809fc37070083a115aa190ef1f1.exe	84
PID 3860 wrote to memory of 4372	3860	JaffaCakes118_5a9ef809fc37070083a115aa190ef1f1.exe	84
PID 3860 wrote to memory of 4372	3860	JaffaCakes118_5a9ef809fc37070083a115aa190ef1f1.exe	84
PID 3860 wrote to memory of 4468	3860	JaffaCakes118_5a9ef809fc37070083a115aa190ef1f1.exe	86
PID 3860 wrote to memory of 4468	3860	JaffaCakes118_5a9ef809fc37070083a115aa190ef1f1.exe	86
PID 3860 wrote to memory of 4468	3860	JaffaCakes118_5a9ef809fc37070083a115aa190ef1f1.exe	86
PID 3860 wrote to memory of 2404	3860	JaffaCakes118_5a9ef809fc37070083a115aa190ef1f1.exe	88
PID 3860 wrote to memory of 2404	3860	JaffaCakes118_5a9ef809fc37070083a115aa190ef1f1.exe	88
PID 3860 wrote to memory of 2404	3860	JaffaCakes118_5a9ef809fc37070083a115aa190ef1f1.exe	88
PID 3860 wrote to memory of 4188	3860	JaffaCakes118_5a9ef809fc37070083a115aa190ef1f1.exe	90
PID 3860 wrote to memory of 4188	3860	JaffaCakes118_5a9ef809fc37070083a115aa190ef1f1.exe	90
PID 3860 wrote to memory of 4188	3860	JaffaCakes118_5a9ef809fc37070083a115aa190ef1f1.exe	90
PID 3860 wrote to memory of 2060	3860	JaffaCakes118_5a9ef809fc37070083a115aa190ef1f1.exe	93
PID 3860 wrote to memory of 2060	3860	JaffaCakes118_5a9ef809fc37070083a115aa190ef1f1.exe	93
PID 3860 wrote to memory of 2060	3860	JaffaCakes118_5a9ef809fc37070083a115aa190ef1f1.exe	93
PID 4656 wrote to memory of 2944	4656	cfygegoy.exe	98
PID 4656 wrote to memory of 2944	4656	cfygegoy.exe	98
PID 4656 wrote to memory of 2944	4656	cfygegoy.exe	98
PID 4656 wrote to memory of 2944	4656	cfygegoy.exe	98
PID 4656 wrote to memory of 2944	4656	cfygegoy.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5a9ef809fc37070083a115aa190ef1f1.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5a9ef809fc37070083a115aa190ef1f1.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3860
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ejqyabqs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3732
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cfygegoy.exe" C:\Windows\SysWOW64\ejqyabqs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4372
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ejqyabqs binPath= "C:\Windows\SysWOW64\ejqyabqs\cfygegoy.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5a9ef809fc37070083a115aa190ef1f1.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4468
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ejqyabqs "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2404
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ejqyabqs
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4188
- 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:2060
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3860 -s 596
  2⤵
  - Program crash
  PID:3272

C:\Windows\SysWOW64\ejqyabqs\cfygegoy.exe
C:\Windows\SysWOW64\ejqyabqs\cfygegoy.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5a9ef809fc37070083a115aa190ef1f1.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4656
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2944

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3860 -ip 3860
1⤵
PID:4280

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\cfygegoy.exe

Filesize
13.0MB

MD5
bdf2a5e518cdf16cf0d8ab7716a2df5a

SHA1
66bd85093f0c79fe48158fd050f66e132f46d627

SHA256
0fda833e6b6ad2f58356624d367252cadbd3d2dfcf11f140b6c5a2a9950e41cc

SHA512
333b85b3a9db30769a0fd3068c1635ac8fddd9d0476862a11536ee6e965d59f3f5a8e3e2e91e6398e3a5f2e39a4a89069b0a13dcd472ce052b3d2c352cf99090

Download Submit
memory/2944-11-0x0000000000D70000-0x0000000000D85000-memory.dmp

Filesize
84KB

Download
memory/2944-14-0x0000000000D70000-0x0000000000D85000-memory.dmp

Filesize
84KB

Download
memory/2944-15-0x0000000000D70000-0x0000000000D85000-memory.dmp

Filesize
84KB

Download
memory/3860-1-0x0000000002DB0000-0x0000000002EB0000-memory.dmp

Filesize
1024KB

Download
memory/3860-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3860-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3860-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3860-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3860-8-0x0000000000400000-0x0000000002B75000-memory.dmp

Filesize
39.5MB

Download
memory/4656-12-0x0000000000400000-0x0000000002B75000-memory.dmp

Filesize
39.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads