tofsee | 8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61

General

Target

8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe
Size

13.9MB
MD5

79dc2160ea73f5a008c5a7b25fb1f1ec
SHA1

329fd850c1dd7541b67ff9b76d532645549a69e0
SHA256

8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61
SHA512

02554429e5526535d1e82feb39b24f88a4bd068355a46efe3b335a57bd417276d4ae8d976a28bb26913c37d55ccb90898c0b115057d1e3924eb795b76db3bb6e
SSDEEP

49152:2yzapZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZy:2CF

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
2664	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\jpuxqube\ImagePath = "C:\\Windows\\SysWOW64\\jpuxqube\\xtiinuar.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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe

Deletes itself 1 IoCs

pid	Process
5064	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1812	xtiinuar.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1812 set thread context of 5064	1812	xtiinuar.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
3640	sc.exe
4796	sc.exe
1128	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
1816	4740	WerFault.exe	81
4076	1812	WerFault.exe	96

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	xtiinuar.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4740 wrote to memory of 2492	4740	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	82
PID 4740 wrote to memory of 2492	4740	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	82
PID 4740 wrote to memory of 2492	4740	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	82
PID 4740 wrote to memory of 4392	4740	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	84
PID 4740 wrote to memory of 4392	4740	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	84
PID 4740 wrote to memory of 4392	4740	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	84
PID 4740 wrote to memory of 3640	4740	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	88
PID 4740 wrote to memory of 3640	4740	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	88
PID 4740 wrote to memory of 3640	4740	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	88
PID 4740 wrote to memory of 4796	4740	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	90
PID 4740 wrote to memory of 4796	4740	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	90
PID 4740 wrote to memory of 4796	4740	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	90
PID 4740 wrote to memory of 1128	4740	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	93
PID 4740 wrote to memory of 1128	4740	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	93
PID 4740 wrote to memory of 1128	4740	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	93
PID 4740 wrote to memory of 2664	4740	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	97
PID 4740 wrote to memory of 2664	4740	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	97
PID 4740 wrote to memory of 2664	4740	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	97
PID 1812 wrote to memory of 5064	1812	xtiinuar.exe	102
PID 1812 wrote to memory of 5064	1812	xtiinuar.exe	102
PID 1812 wrote to memory of 5064	1812	xtiinuar.exe	102
PID 1812 wrote to memory of 5064	1812	xtiinuar.exe	102
PID 1812 wrote to memory of 5064	1812	xtiinuar.exe	102

C:\Users\Admin\AppData\Local\Temp\8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe
"C:\Users\Admin\AppData\Local\Temp\8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4740
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jpuxqube\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2492
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xtiinuar.exe" C:\Windows\SysWOW64\jpuxqube\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4392
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create jpuxqube binPath= "C:\Windows\SysWOW64\jpuxqube\xtiinuar.exe /d\"C:\Users\Admin\AppData\Local\Temp\8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3640
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description jpuxqube "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4796
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start jpuxqube
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1128
- 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:2664
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4740 -s 672
  2⤵
  - Program crash
  PID:1816

C:\Windows\SysWOW64\jpuxqube\xtiinuar.exe
C:\Windows\SysWOW64\jpuxqube\xtiinuar.exe /d"C:\Users\Admin\AppData\Local\Temp\8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1812
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:5064
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1812 -s 520
  2⤵
  - Program crash
  PID:4076

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4740 -ip 4740
1⤵
PID:432

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1812 -ip 1812
1⤵
PID:3488

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\xtiinuar.exe

Filesize
10.3MB

MD5
67dccd7a451f57fe264d231d2b3fdad8

SHA1
0ab30d959633e70899c205209451fc357165cac8

SHA256
e1ff9f98a22eed77d8dd9151c26d208b26f4e90c3781b4686a03d158e6a4e76f

SHA512
cf658bc1ddd2febe845fe95bfd08f36ad4080ba2af17d118954da4b1e716777db9df80c55b3decc564978c612fd0d4a4548cfcb5b9bda23a8905d68f4efbb952

Download Submit
memory/1812-14-0x0000000000400000-0x00000000016BD000-memory.dmp

Filesize
18.7MB

Download
memory/1812-17-0x0000000000400000-0x00000000016BD000-memory.dmp

Filesize
18.7MB

Download
memory/4740-1-0x0000000001860000-0x0000000001960000-memory.dmp

Filesize
1024KB

Download
memory/4740-2-0x0000000003400000-0x0000000003413000-memory.dmp

Filesize
76KB

Download
memory/4740-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4740-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4740-9-0x0000000003400000-0x0000000003413000-memory.dmp

Filesize
76KB

Download
memory/4740-8-0x0000000000400000-0x00000000016BD000-memory.dmp

Filesize
18.7MB

Download
memory/5064-11-0x0000000000880000-0x0000000000895000-memory.dmp

Filesize
84KB

Download
memory/5064-13-0x0000000000880000-0x0000000000895000-memory.dmp

Filesize
84KB

Download
memory/5064-15-0x0000000000880000-0x0000000000895000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads