tofsee | 04594d5a85f6667c27f9667295841af5f9893f20e74ddd23dc156d63b7aa95cd

General

Target

04594d5a85f6667c27f9667295841af5f9893f20e74ddd23dc156d63b7aa95cd.exe
Size

14.9MB
MD5

f757a10679f8aedd434b42cbf4bd0059
SHA1

2225607c93de06054c8321c098f192de5314f5c4
SHA256

04594d5a85f6667c27f9667295841af5f9893f20e74ddd23dc156d63b7aa95cd
SHA512

da964e6fdfd5a17b3733abae3bd94d33d1662a728c1441ed7fc04aa0415f3105b1897e2b6e644d855680e08d4498a3b57c16f8a0892f7a7e79159eb8903c5e91
SSDEEP

49152:FkHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHl:y

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

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\mnsbtkii = "0"	svchost.exe

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

Processes:

netsh.exe

pid process

2780 netsh.exe

pid	process
2780	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\mnsbtkii\ImagePath = "C:\\Windows\\SysWOW64\\mnsbtkii\\npjyuqmd.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2344 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

npjyuqmd.exe

pid process

2588 npjyuqmd.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

npjyuqmd.exe

description pid process target process

PID 2588 set thread context of 2344 2588 npjyuqmd.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

2680 sc.exe
2740 sc.exe
2880 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2344	svchost.exe

pid	process
2588	npjyuqmd.exe

description	pid	process	target process
PID 2588 set thread context of 2344	2588	npjyuqmd.exe	svchost.exe

pid	process
2680	sc.exe
2740	sc.exe
2880	sc.exe

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

Processes:

netsh.exe

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

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

Processes:

cmd.execmd.exesc.exenetsh.exesvchost.exe04594d5a85f6667c27f9667295841af5f9893f20e74ddd23dc156d63b7aa95cd.exesc.exesc.exenpjyuqmd.exe

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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	04594d5a85f6667c27f9667295841af5f9893f20e74ddd23dc156d63b7aa95cd.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	npjyuqmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

04594d5a85f6667c27f9667295841af5f9893f20e74ddd23dc156d63b7aa95cd.exenpjyuqmd.exe

description	pid	process	target process
PID 3024 wrote to memory of 2648	3024	04594d5a85f6667c27f9667295841af5f9893f20e74ddd23dc156d63b7aa95cd.exe	cmd.exe
PID 3024 wrote to memory of 2648	3024	04594d5a85f6667c27f9667295841af5f9893f20e74ddd23dc156d63b7aa95cd.exe	cmd.exe
PID 3024 wrote to memory of 2648	3024	04594d5a85f6667c27f9667295841af5f9893f20e74ddd23dc156d63b7aa95cd.exe	cmd.exe
PID 3024 wrote to memory of 2648	3024	04594d5a85f6667c27f9667295841af5f9893f20e74ddd23dc156d63b7aa95cd.exe	cmd.exe
PID 3024 wrote to memory of 2752	3024	04594d5a85f6667c27f9667295841af5f9893f20e74ddd23dc156d63b7aa95cd.exe	cmd.exe
PID 3024 wrote to memory of 2752	3024	04594d5a85f6667c27f9667295841af5f9893f20e74ddd23dc156d63b7aa95cd.exe	cmd.exe
PID 3024 wrote to memory of 2752	3024	04594d5a85f6667c27f9667295841af5f9893f20e74ddd23dc156d63b7aa95cd.exe	cmd.exe
PID 3024 wrote to memory of 2752	3024	04594d5a85f6667c27f9667295841af5f9893f20e74ddd23dc156d63b7aa95cd.exe	cmd.exe
PID 3024 wrote to memory of 2740	3024	04594d5a85f6667c27f9667295841af5f9893f20e74ddd23dc156d63b7aa95cd.exe	sc.exe
PID 3024 wrote to memory of 2740	3024	04594d5a85f6667c27f9667295841af5f9893f20e74ddd23dc156d63b7aa95cd.exe	sc.exe
PID 3024 wrote to memory of 2740	3024	04594d5a85f6667c27f9667295841af5f9893f20e74ddd23dc156d63b7aa95cd.exe	sc.exe
PID 3024 wrote to memory of 2740	3024	04594d5a85f6667c27f9667295841af5f9893f20e74ddd23dc156d63b7aa95cd.exe	sc.exe
PID 3024 wrote to memory of 2880	3024	04594d5a85f6667c27f9667295841af5f9893f20e74ddd23dc156d63b7aa95cd.exe	sc.exe
PID 3024 wrote to memory of 2880	3024	04594d5a85f6667c27f9667295841af5f9893f20e74ddd23dc156d63b7aa95cd.exe	sc.exe
PID 3024 wrote to memory of 2880	3024	04594d5a85f6667c27f9667295841af5f9893f20e74ddd23dc156d63b7aa95cd.exe	sc.exe
PID 3024 wrote to memory of 2880	3024	04594d5a85f6667c27f9667295841af5f9893f20e74ddd23dc156d63b7aa95cd.exe	sc.exe
PID 3024 wrote to memory of 2680	3024	04594d5a85f6667c27f9667295841af5f9893f20e74ddd23dc156d63b7aa95cd.exe	sc.exe
PID 3024 wrote to memory of 2680	3024	04594d5a85f6667c27f9667295841af5f9893f20e74ddd23dc156d63b7aa95cd.exe	sc.exe
PID 3024 wrote to memory of 2680	3024	04594d5a85f6667c27f9667295841af5f9893f20e74ddd23dc156d63b7aa95cd.exe	sc.exe
PID 3024 wrote to memory of 2680	3024	04594d5a85f6667c27f9667295841af5f9893f20e74ddd23dc156d63b7aa95cd.exe	sc.exe
PID 3024 wrote to memory of 2780	3024	04594d5a85f6667c27f9667295841af5f9893f20e74ddd23dc156d63b7aa95cd.exe	netsh.exe
PID 3024 wrote to memory of 2780	3024	04594d5a85f6667c27f9667295841af5f9893f20e74ddd23dc156d63b7aa95cd.exe	netsh.exe
PID 3024 wrote to memory of 2780	3024	04594d5a85f6667c27f9667295841af5f9893f20e74ddd23dc156d63b7aa95cd.exe	netsh.exe
PID 3024 wrote to memory of 2780	3024	04594d5a85f6667c27f9667295841af5f9893f20e74ddd23dc156d63b7aa95cd.exe	netsh.exe
PID 2588 wrote to memory of 2344	2588	npjyuqmd.exe	svchost.exe
PID 2588 wrote to memory of 2344	2588	npjyuqmd.exe	svchost.exe
PID 2588 wrote to memory of 2344	2588	npjyuqmd.exe	svchost.exe
PID 2588 wrote to memory of 2344	2588	npjyuqmd.exe	svchost.exe
PID 2588 wrote to memory of 2344	2588	npjyuqmd.exe	svchost.exe
PID 2588 wrote to memory of 2344	2588	npjyuqmd.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\04594d5a85f6667c27f9667295841af5f9893f20e74ddd23dc156d63b7aa95cd.exe
"C:\Users\Admin\AppData\Local\Temp\04594d5a85f6667c27f9667295841af5f9893f20e74ddd23dc156d63b7aa95cd.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3024
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mnsbtkii\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2648
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\npjyuqmd.exe" C:\Windows\SysWOW64\mnsbtkii\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2752
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mnsbtkii binPath= "C:\Windows\SysWOW64\mnsbtkii\npjyuqmd.exe /d\"C:\Users\Admin\AppData\Local\Temp\04594d5a85f6667c27f9667295841af5f9893f20e74ddd23dc156d63b7aa95cd.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2740
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mnsbtkii "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2880
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mnsbtkii
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2680
- 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:2780

C:\Windows\SysWOW64\mnsbtkii\npjyuqmd.exe
C:\Windows\SysWOW64\mnsbtkii\npjyuqmd.exe /d"C:\Users\Admin\AppData\Local\Temp\04594d5a85f6667c27f9667295841af5f9893f20e74ddd23dc156d63b7aa95cd.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2588
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2344

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

2

T1562

Disable or Modify System Firewall

1

T1562.004

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

1

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\npjyuqmd.exe

Filesize
11.4MB

MD5
f28874bb646319a5f795f8ddea93995a

SHA1
c8c8b9b105789cc118fb096bfd678a927d66995d

SHA256
e09e5c1b577cabc2308d8b446a37ab3156d3c137fc98add493a3953e8743c311

SHA512
621877313d523279383440a278971ddb091f0cfd56dadac9f94b2c4d5df2ff5a802120b9a47236f36e93cc0876035797fbc125d9170128081af07dba151a3a8f

Download Submit
memory/2344-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2344-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2344-12-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2344-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2344-19-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2588-16-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/3024-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3024-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/3024-8-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/3024-10-0x0000000000910000-0x0000000000A10000-memory.dmp

Filesize
1024KB

Download
memory/3024-11-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3024-9-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/3024-1-0x0000000000910000-0x0000000000A10000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads