tofsee | 402a3777f66fdbaeb66e90ed00599e675cafc44c2c078d58fee1f8fcbecc5d18

General

Target

JaffaCakes118_b44a3920729601ec0f77816cf7a82a59.exe
Size

11.5MB
MD5

b44a3920729601ec0f77816cf7a82a59
SHA1

e72af38f7b6f03d9aae89e5f6be27f3fb48d9b7e
SHA256

402a3777f66fdbaeb66e90ed00599e675cafc44c2c078d58fee1f8fcbecc5d18
SHA512

86de0528f5cef140f79e4098739b3d5aae084878db66d39e83100fbcafbf2b9f681f7c9221dcc06152d7db9e00b69daaf5480bd34b85769d14430d6588539a09
SSDEEP

49152:DkHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHn:

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
4608	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\fabkwdkw\ImagePath = "C:\\Windows\\SysWOW64\\fabkwdkw\\yaujfbxo.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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	JaffaCakes118_b44a3920729601ec0f77816cf7a82a59.exe

Deletes itself 1 IoCs

pid	Process
4284	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3964	yaujfbxo.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3964 set thread context of 4284	3964	yaujfbxo.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
4876	sc.exe
2356	sc.exe
1824	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
4548	5064	WerFault.exe	82
4568	3964	WerFault.exe	94

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	yaujfbxo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_b44a3920729601ec0f77816cf7a82a59.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 5064 wrote to memory of 4404	5064	JaffaCakes118_b44a3920729601ec0f77816cf7a82a59.exe	83
PID 5064 wrote to memory of 4404	5064	JaffaCakes118_b44a3920729601ec0f77816cf7a82a59.exe	83
PID 5064 wrote to memory of 4404	5064	JaffaCakes118_b44a3920729601ec0f77816cf7a82a59.exe	83
PID 5064 wrote to memory of 4800	5064	JaffaCakes118_b44a3920729601ec0f77816cf7a82a59.exe	85
PID 5064 wrote to memory of 4800	5064	JaffaCakes118_b44a3920729601ec0f77816cf7a82a59.exe	85
PID 5064 wrote to memory of 4800	5064	JaffaCakes118_b44a3920729601ec0f77816cf7a82a59.exe	85
PID 5064 wrote to memory of 1824	5064	JaffaCakes118_b44a3920729601ec0f77816cf7a82a59.exe	88
PID 5064 wrote to memory of 1824	5064	JaffaCakes118_b44a3920729601ec0f77816cf7a82a59.exe	88
PID 5064 wrote to memory of 1824	5064	JaffaCakes118_b44a3920729601ec0f77816cf7a82a59.exe	88
PID 5064 wrote to memory of 4876	5064	JaffaCakes118_b44a3920729601ec0f77816cf7a82a59.exe	90
PID 5064 wrote to memory of 4876	5064	JaffaCakes118_b44a3920729601ec0f77816cf7a82a59.exe	90
PID 5064 wrote to memory of 4876	5064	JaffaCakes118_b44a3920729601ec0f77816cf7a82a59.exe	90
PID 5064 wrote to memory of 2356	5064	JaffaCakes118_b44a3920729601ec0f77816cf7a82a59.exe	92
PID 5064 wrote to memory of 2356	5064	JaffaCakes118_b44a3920729601ec0f77816cf7a82a59.exe	92
PID 5064 wrote to memory of 2356	5064	JaffaCakes118_b44a3920729601ec0f77816cf7a82a59.exe	92
PID 5064 wrote to memory of 4608	5064	JaffaCakes118_b44a3920729601ec0f77816cf7a82a59.exe	95
PID 5064 wrote to memory of 4608	5064	JaffaCakes118_b44a3920729601ec0f77816cf7a82a59.exe	95
PID 5064 wrote to memory of 4608	5064	JaffaCakes118_b44a3920729601ec0f77816cf7a82a59.exe	95
PID 3964 wrote to memory of 4284	3964	yaujfbxo.exe	102
PID 3964 wrote to memory of 4284	3964	yaujfbxo.exe	102
PID 3964 wrote to memory of 4284	3964	yaujfbxo.exe	102
PID 3964 wrote to memory of 4284	3964	yaujfbxo.exe	102
PID 3964 wrote to memory of 4284	3964	yaujfbxo.exe	102

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b44a3920729601ec0f77816cf7a82a59.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b44a3920729601ec0f77816cf7a82a59.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5064
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fabkwdkw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4404
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\yaujfbxo.exe" C:\Windows\SysWOW64\fabkwdkw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4800
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fabkwdkw binPath= "C:\Windows\SysWOW64\fabkwdkw\yaujfbxo.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b44a3920729601ec0f77816cf7a82a59.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1824
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fabkwdkw "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4876
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fabkwdkw
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2356
- 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:4608
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5064 -s 576
  2⤵
  - Program crash
  PID:4548

C:\Windows\SysWOW64\fabkwdkw\yaujfbxo.exe
C:\Windows\SysWOW64\fabkwdkw\yaujfbxo.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b44a3920729601ec0f77816cf7a82a59.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3964
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4284
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3964 -s 532
  2⤵
  - Program crash
  PID:4568

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 5064 -ip 5064
1⤵
PID:1800

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 3964 -ip 3964
1⤵
PID:1212

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\yaujfbxo.exe

Filesize
10.3MB

MD5
e0e284def670672861504e185a4489b9

SHA1
2a85e854b9bcd5affb5d72f58b808f6e8cf72d8b

SHA256
b0277dd6339f27c54dab2641f33281f2f6cec66345b9d18e57a3171c49c7c28c

SHA512
f2366b31384c459f5532585e3ab7645385c93349ff9e429e79db1b3a13b300887438a63f79883f5eaa42073dbd1129ff311c0bfb1a86235bfd340a6b68b089f9

Download Submit
memory/3964-11-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/3964-17-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/4284-12-0x0000000000570000-0x0000000000585000-memory.dmp

Filesize
84KB

Download
memory/4284-14-0x0000000000570000-0x0000000000585000-memory.dmp

Filesize
84KB

Download
memory/4284-15-0x0000000000570000-0x0000000000585000-memory.dmp

Filesize
84KB

Download
memory/5064-1-0x00000000009C0000-0x0000000000AC0000-memory.dmp

Filesize
1024KB

Download
memory/5064-2-0x00000000024D0000-0x00000000024E3000-memory.dmp

Filesize
76KB

Download
memory/5064-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5064-8-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/5064-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5064-9-0x00000000024D0000-0x00000000024E3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads