tofsee | edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20

General

Target

edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe
Size

13.3MB
MD5

57163e49f6f67475836d3d49abab1a6f
SHA1

b11e58b16d751db535317a0aacca97c20ae7ba25
SHA256

edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20
SHA512

32f162b0b70ad5efe95974078d446d836cb7665db344a93295e7fc2f4a738f661ea79c67ac7ea30ace95d5834ef6f491f5b291f0e5072ff8c43e6545957bc256
SSDEEP

49152:f1m333333333333333333333333333333333333333333333333333333333333w:l

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
3000	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\fmvesnjw\ImagePath = "C:\\Windows\\SysWOW64\\fmvesnjw\\anwtuzly.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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe

Deletes itself 1 IoCs

pid	Process
3888	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4308	anwtuzly.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4308 set thread context of 3888	4308	anwtuzly.exe	107

Launches sc.exe 3 IoCs

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

pid	Process
1016	sc.exe
1888	sc.exe
2812	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 2 IoCs

pid	pid_target	Process	procid_target
1400	1652	WerFault.exe	82
2204	4308	WerFault.exe	100

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	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	anwtuzly.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1652 wrote to memory of 3908	1652	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	83
PID 1652 wrote to memory of 3908	1652	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	83
PID 1652 wrote to memory of 3908	1652	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	83
PID 1652 wrote to memory of 3896	1652	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	87
PID 1652 wrote to memory of 3896	1652	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	87
PID 1652 wrote to memory of 3896	1652	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	87
PID 1652 wrote to memory of 1016	1652	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	90
PID 1652 wrote to memory of 1016	1652	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	90
PID 1652 wrote to memory of 1016	1652	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	90
PID 1652 wrote to memory of 1888	1652	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	96
PID 1652 wrote to memory of 1888	1652	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	96
PID 1652 wrote to memory of 1888	1652	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	96
PID 1652 wrote to memory of 2812	1652	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	98
PID 1652 wrote to memory of 2812	1652	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	98
PID 1652 wrote to memory of 2812	1652	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	98
PID 1652 wrote to memory of 3000	1652	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	101
PID 1652 wrote to memory of 3000	1652	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	101
PID 1652 wrote to memory of 3000	1652	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	101
PID 4308 wrote to memory of 3888	4308	anwtuzly.exe	107
PID 4308 wrote to memory of 3888	4308	anwtuzly.exe	107
PID 4308 wrote to memory of 3888	4308	anwtuzly.exe	107
PID 4308 wrote to memory of 3888	4308	anwtuzly.exe	107
PID 4308 wrote to memory of 3888	4308	anwtuzly.exe	107

C:\Users\Admin\AppData\Local\Temp\edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe
"C:\Users\Admin\AppData\Local\Temp\edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1652
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fmvesnjw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3908
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\anwtuzly.exe" C:\Windows\SysWOW64\fmvesnjw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3896
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fmvesnjw binPath= "C:\Windows\SysWOW64\fmvesnjw\anwtuzly.exe /d\"C:\Users\Admin\AppData\Local\Temp\edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1016
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fmvesnjw "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1888
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fmvesnjw
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2812
- 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:3000
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1652 -s 1188
  2⤵
  - Program crash
  PID:1400

C:\Windows\SysWOW64\fmvesnjw\anwtuzly.exe
C:\Windows\SysWOW64\fmvesnjw\anwtuzly.exe /d"C:\Users\Admin\AppData\Local\Temp\edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4308
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3888
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4308 -s 536
  2⤵
  - Program crash
  PID:2204

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1652 -ip 1652
1⤵
PID:2324

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 4308 -ip 4308
1⤵
PID:2672

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\anwtuzly.exe

Filesize
13.4MB

MD5
c73056d8185c66ef307f8643500ec376

SHA1
8c47114d3f382b630a50d29b1d9233c5c1c2968d

SHA256
06d05c50de8cdc18829b401061e67eaf322f20b4abdff1133b75539d272b90bd

SHA512
c2642e3de74d3842513388b5999811cc313b9242a802c43b42287f7377784c4bffde5f102faa2cb31e78cbbd79a53a4f13beee4bb81b64e509ada0033585b1a3

Download Submit
memory/1652-1-0x00000000019B0000-0x0000000001AB0000-memory.dmp

Filesize
1024KB

Download
memory/1652-2-0x0000000001960000-0x0000000001973000-memory.dmp

Filesize
76KB

Download
memory/1652-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1652-9-0x0000000001960000-0x0000000001973000-memory.dmp

Filesize
76KB

Download
memory/1652-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1652-8-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/3888-11-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/3888-13-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/3888-15-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/4308-14-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/4308-17-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads