tofsee | 6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02

General

Target

6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe
Size

255KB
MD5

508f7fb1894f6b62f1be00a2f1c44599
SHA1

6249464295b0424bb74726ea8148878cfb295692
SHA256

6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02
SHA512

eba6d8b0d73abff9955d7025cef7c53221a2dba3667ff199a87d3edec62e781440820026432f73e1b20353f95ab9b315b7c9d9388f2655705889ceda75d7c2ca
SSDEEP

6144:iorUJvgpuP4t0XrOyc79RAU5SJu9WPBshHviRpHFO:iq64puP4tMzyRAU5Mu9WWhHvm6

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
3700	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\yqtynwmq\ImagePath = "C:\\Windows\\SysWOW64\\yqtynwmq\\adwecemw.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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe

Deletes itself 1 IoCs

pid	Process
4044	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1612	adwecemw.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1612 set thread context of 4044	1612	adwecemw.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
2224	sc.exe
1628	sc.exe
4236	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
1572	2644	WerFault.exe	81
4996	1612	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	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.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	adwecemw.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2644 wrote to memory of 4744	2644	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	82
PID 2644 wrote to memory of 4744	2644	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	82
PID 2644 wrote to memory of 4744	2644	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	82
PID 2644 wrote to memory of 444	2644	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	84
PID 2644 wrote to memory of 444	2644	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	84
PID 2644 wrote to memory of 444	2644	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	84
PID 2644 wrote to memory of 2224	2644	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	86
PID 2644 wrote to memory of 2224	2644	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	86
PID 2644 wrote to memory of 2224	2644	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	86
PID 2644 wrote to memory of 1628	2644	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	88
PID 2644 wrote to memory of 1628	2644	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	88
PID 2644 wrote to memory of 1628	2644	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	88
PID 2644 wrote to memory of 4236	2644	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	90
PID 2644 wrote to memory of 4236	2644	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	90
PID 2644 wrote to memory of 4236	2644	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	90
PID 2644 wrote to memory of 3700	2644	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	93
PID 2644 wrote to memory of 3700	2644	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	93
PID 2644 wrote to memory of 3700	2644	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	93
PID 1612 wrote to memory of 4044	1612	adwecemw.exe	98
PID 1612 wrote to memory of 4044	1612	adwecemw.exe	98
PID 1612 wrote to memory of 4044	1612	adwecemw.exe	98
PID 1612 wrote to memory of 4044	1612	adwecemw.exe	98
PID 1612 wrote to memory of 4044	1612	adwecemw.exe	98

C:\Users\Admin\AppData\Local\Temp\6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe
"C:\Users\Admin\AppData\Local\Temp\6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2644
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yqtynwmq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4744
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\adwecemw.exe" C:\Windows\SysWOW64\yqtynwmq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:444
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create yqtynwmq binPath= "C:\Windows\SysWOW64\yqtynwmq\adwecemw.exe /d\"C:\Users\Admin\AppData\Local\Temp\6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2224
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description yqtynwmq "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1628
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start yqtynwmq
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4236
- 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:3700
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2644 -s 1048
  2⤵
  - Program crash
  PID:1572

C:\Windows\SysWOW64\yqtynwmq\adwecemw.exe
C:\Windows\SysWOW64\yqtynwmq\adwecemw.exe /d"C:\Users\Admin\AppData\Local\Temp\6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1612
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4044
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1612 -s 524
  2⤵
  - Program crash
  PID:4996

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2644 -ip 2644
1⤵
PID:5052

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 1612 -ip 1612
1⤵
PID:4040

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\adwecemw.exe

Filesize
12.8MB

MD5
7b4d053e70369894fe1d8a0ea54183a3

SHA1
dfcc741fba2f4ad3472c6ceadef994a977dab122

SHA256
fec7bd2bbda42156c269c7e079f50d50e99b5a2c4fedd1435f602f6eb5cd8e2c

SHA512
11369dbc956fef11f1a29cadb5f8ce3cf66f639c5cfe26c549726172f39afa48369a233a7539d5fac3da86beebaa12f49d995c7111fd84d9fefcb960546ad80d

Download Submit
memory/1612-12-0x0000000000400000-0x000000000086F000-memory.dmp

Filesize
4.4MB

Download
memory/1612-15-0x0000000000400000-0x000000000086F000-memory.dmp

Filesize
4.4MB

Download
memory/2644-1-0x0000000000B50000-0x0000000000C50000-memory.dmp

Filesize
1024KB

Download
memory/2644-2-0x0000000000B00000-0x0000000000B13000-memory.dmp

Filesize
76KB

Download
memory/2644-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2644-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2644-9-0x0000000000B00000-0x0000000000B13000-memory.dmp

Filesize
76KB

Download
memory/2644-8-0x0000000000400000-0x000000000086F000-memory.dmp

Filesize
4.4MB

Download
memory/4044-14-0x0000000001280000-0x0000000001295000-memory.dmp

Filesize
84KB

Download
memory/4044-11-0x0000000001280000-0x0000000001295000-memory.dmp

Filesize
84KB

Download
memory/4044-16-0x0000000001280000-0x0000000001295000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads