tofsee | 4d83294566e99f0fe97b104ecf6f7acc1db4ef3b354d71d28f098cbaae919606

General

Target

4d83294566e99f0fe97b104ecf6f7acc1db4ef3b354d71d28f098cbaae919606.exe
Size

11.6MB
MD5

855fb8e778ba661c134f1978e5585f9b
SHA1

861477ea63f73f1031c4580b1a181c67b6222726
SHA256

4d83294566e99f0fe97b104ecf6f7acc1db4ef3b354d71d28f098cbaae919606
SHA512

d1780f4524fce67bdcf795d4c1a359480ff18eb3bedb17d8cca69ef0092a6a70e9206632471e14839842ec79c7c5cff0da3d594e94d5a8981cfcf4d863992670
SSDEEP

196608:6MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMQ:6MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMQ

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
232	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\xucikhbs\ImagePath = "C:\\Windows\\SysWOW64\\xucikhbs\\ngrhspib.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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	4d83294566e99f0fe97b104ecf6f7acc1db4ef3b354d71d28f098cbaae919606.exe

Deletes itself 1 IoCs

pid	Process
5116	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3716	ngrhspib.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3716 set thread context of 5116	3716	ngrhspib.exe	110

Launches sc.exe 3 IoCs

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

pid	Process
2832	sc.exe
3184	sc.exe
1944	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
1676	1376	WerFault.exe	82
768	3716	WerFault.exe	101

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	4d83294566e99f0fe97b104ecf6f7acc1db4ef3b354d71d28f098cbaae919606.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	ngrhspib.exe
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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1376 wrote to memory of 2644	1376	4d83294566e99f0fe97b104ecf6f7acc1db4ef3b354d71d28f098cbaae919606.exe	86
PID 1376 wrote to memory of 2644	1376	4d83294566e99f0fe97b104ecf6f7acc1db4ef3b354d71d28f098cbaae919606.exe	86
PID 1376 wrote to memory of 2644	1376	4d83294566e99f0fe97b104ecf6f7acc1db4ef3b354d71d28f098cbaae919606.exe	86
PID 1376 wrote to memory of 1824	1376	4d83294566e99f0fe97b104ecf6f7acc1db4ef3b354d71d28f098cbaae919606.exe	93
PID 1376 wrote to memory of 1824	1376	4d83294566e99f0fe97b104ecf6f7acc1db4ef3b354d71d28f098cbaae919606.exe	93
PID 1376 wrote to memory of 1824	1376	4d83294566e99f0fe97b104ecf6f7acc1db4ef3b354d71d28f098cbaae919606.exe	93
PID 1376 wrote to memory of 3184	1376	4d83294566e99f0fe97b104ecf6f7acc1db4ef3b354d71d28f098cbaae919606.exe	95
PID 1376 wrote to memory of 3184	1376	4d83294566e99f0fe97b104ecf6f7acc1db4ef3b354d71d28f098cbaae919606.exe	95
PID 1376 wrote to memory of 3184	1376	4d83294566e99f0fe97b104ecf6f7acc1db4ef3b354d71d28f098cbaae919606.exe	95
PID 1376 wrote to memory of 1944	1376	4d83294566e99f0fe97b104ecf6f7acc1db4ef3b354d71d28f098cbaae919606.exe	97
PID 1376 wrote to memory of 1944	1376	4d83294566e99f0fe97b104ecf6f7acc1db4ef3b354d71d28f098cbaae919606.exe	97
PID 1376 wrote to memory of 1944	1376	4d83294566e99f0fe97b104ecf6f7acc1db4ef3b354d71d28f098cbaae919606.exe	97
PID 1376 wrote to memory of 2832	1376	4d83294566e99f0fe97b104ecf6f7acc1db4ef3b354d71d28f098cbaae919606.exe	99
PID 1376 wrote to memory of 2832	1376	4d83294566e99f0fe97b104ecf6f7acc1db4ef3b354d71d28f098cbaae919606.exe	99
PID 1376 wrote to memory of 2832	1376	4d83294566e99f0fe97b104ecf6f7acc1db4ef3b354d71d28f098cbaae919606.exe	99
PID 1376 wrote to memory of 232	1376	4d83294566e99f0fe97b104ecf6f7acc1db4ef3b354d71d28f098cbaae919606.exe	102
PID 1376 wrote to memory of 232	1376	4d83294566e99f0fe97b104ecf6f7acc1db4ef3b354d71d28f098cbaae919606.exe	102
PID 1376 wrote to memory of 232	1376	4d83294566e99f0fe97b104ecf6f7acc1db4ef3b354d71d28f098cbaae919606.exe	102
PID 3716 wrote to memory of 5116	3716	ngrhspib.exe	110
PID 3716 wrote to memory of 5116	3716	ngrhspib.exe	110
PID 3716 wrote to memory of 5116	3716	ngrhspib.exe	110
PID 3716 wrote to memory of 5116	3716	ngrhspib.exe	110
PID 3716 wrote to memory of 5116	3716	ngrhspib.exe	110

C:\Users\Admin\AppData\Local\Temp\4d83294566e99f0fe97b104ecf6f7acc1db4ef3b354d71d28f098cbaae919606.exe
"C:\Users\Admin\AppData\Local\Temp\4d83294566e99f0fe97b104ecf6f7acc1db4ef3b354d71d28f098cbaae919606.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1376
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xucikhbs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2644
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ngrhspib.exe" C:\Windows\SysWOW64\xucikhbs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1824
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create xucikhbs binPath= "C:\Windows\SysWOW64\xucikhbs\ngrhspib.exe /d\"C:\Users\Admin\AppData\Local\Temp\4d83294566e99f0fe97b104ecf6f7acc1db4ef3b354d71d28f098cbaae919606.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3184
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description xucikhbs "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1944
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start xucikhbs
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2832
- 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:232
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1376 -s 680
  2⤵
  - Program crash
  PID:1676

C:\Windows\SysWOW64\xucikhbs\ngrhspib.exe
C:\Windows\SysWOW64\xucikhbs\ngrhspib.exe /d"C:\Users\Admin\AppData\Local\Temp\4d83294566e99f0fe97b104ecf6f7acc1db4ef3b354d71d28f098cbaae919606.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3716
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:5116
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3716 -s 528
  2⤵
  - Program crash
  PID:768

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1376 -ip 1376
1⤵
PID:1620

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 3716 -ip 3716
1⤵
PID:3232

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\ngrhspib.exe

Filesize
11.0MB

MD5
817fb1828a9219e4af4de8b700f7b1e8

SHA1
4c1c245f149ba8f9dafb4da90ceaa91a3462e27f

SHA256
0014453f664833a40616df209f04593c323fd95636a5578eb462db6042c5c7cd

SHA512
e55cc26ad421b50bcc831567aba569efd61456c6f0230f45934fc00b9919741c99e3fab222a8ce1135c338caf79da43feb9e75497e0852bc07833c923b745faf

Download Submit
memory/1376-0-0x00000000031B0000-0x00000000031BD000-memory.dmp

Filesize
52KB

Download
memory/1376-1-0x00000000031C0000-0x00000000031D3000-memory.dmp

Filesize
76KB

Download
memory/1376-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1376-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1376-8-0x00000000031C0000-0x00000000031D3000-memory.dmp

Filesize
76KB

Download
memory/1376-7-0x00000000031B0000-0x00000000031BD000-memory.dmp

Filesize
52KB

Download
memory/1376-6-0x0000000000400000-0x0000000002F05000-memory.dmp

Filesize
43.0MB

Download
memory/3716-14-0x0000000000400000-0x0000000002F05000-memory.dmp

Filesize
43.0MB

Download
memory/5116-10-0x0000000000CA0000-0x0000000000CB5000-memory.dmp

Filesize
84KB

Download
memory/5116-12-0x0000000000CA0000-0x0000000000CB5000-memory.dmp

Filesize
84KB

Download
memory/5116-13-0x0000000000CA0000-0x0000000000CB5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads