tofsee | 5500b8a4b2bc75d90f9a81116726d643dbd0822b2dbcab9fc18dd584abdccaa7

Analysis

max time kernel
144s
max time network
130s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
01-02-2025 20:07

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General

Target

2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe
Size

10.9MB
MD5

3e00badf3dad2fe1c427f9dcbd3af132
SHA1

2c24740612b6898181e04cd18417c3e5a826a416
SHA256

5500b8a4b2bc75d90f9a81116726d643dbd0822b2dbcab9fc18dd584abdccaa7
SHA512

5147431e831baf236db10c2a3d6e3d299444a76af2f74d1da17a5837be509931bb487fd6a240b30b02bf971efbdd9c1c0e9dc2a0279c335c85309132c87773c4
SSDEEP

24576:x6WdLQkyQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQI:YWdLQk

Score

10^/10

tofsee defense_evasion discovery execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

43.231.4.7

lazystax.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

defense_evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\bqpwtsey = "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

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2684	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\bqpwtsey\ImagePath = "C:\\Windows\\SysWOW64\\bqpwtsey\\nemkupwk.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2692	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2664	nemkupwk.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2664 set thread context of 2692	2664	nemkupwk.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2832	sc.exe
2156	sc.exe
2672	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

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.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	nemkupwk.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1996 wrote to memory of 2300	1996	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	31
PID 1996 wrote to memory of 2300	1996	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	31
PID 1996 wrote to memory of 2300	1996	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	31
PID 1996 wrote to memory of 2300	1996	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	31
PID 1996 wrote to memory of 2920	1996	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	33
PID 1996 wrote to memory of 2920	1996	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	33
PID 1996 wrote to memory of 2920	1996	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	33
PID 1996 wrote to memory of 2920	1996	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	33
PID 1996 wrote to memory of 2156	1996	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	35
PID 1996 wrote to memory of 2156	1996	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	35
PID 1996 wrote to memory of 2156	1996	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	35
PID 1996 wrote to memory of 2156	1996	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	35
PID 1996 wrote to memory of 2672	1996	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	37
PID 1996 wrote to memory of 2672	1996	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	37
PID 1996 wrote to memory of 2672	1996	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	37
PID 1996 wrote to memory of 2672	1996	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	37
PID 1996 wrote to memory of 2832	1996	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	39
PID 1996 wrote to memory of 2832	1996	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	39
PID 1996 wrote to memory of 2832	1996	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	39
PID 1996 wrote to memory of 2832	1996	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	39
PID 1996 wrote to memory of 2684	1996	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	41
PID 1996 wrote to memory of 2684	1996	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	41
PID 1996 wrote to memory of 2684	1996	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	41
PID 1996 wrote to memory of 2684	1996	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	41
PID 2664 wrote to memory of 2692	2664	nemkupwk.exe	44
PID 2664 wrote to memory of 2692	2664	nemkupwk.exe	44
PID 2664 wrote to memory of 2692	2664	nemkupwk.exe	44
PID 2664 wrote to memory of 2692	2664	nemkupwk.exe	44
PID 2664 wrote to memory of 2692	2664	nemkupwk.exe	44
PID 2664 wrote to memory of 2692	2664	nemkupwk.exe	44

C:\Users\Admin\AppData\Local\Temp\2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1996
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bqpwtsey\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2300
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nemkupwk.exe" C:\Windows\SysWOW64\bqpwtsey\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2920
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bqpwtsey binPath= "C:\Windows\SysWOW64\bqpwtsey\nemkupwk.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2156
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bqpwtsey "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2672
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bqpwtsey
  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:2684

C:\Windows\SysWOW64\bqpwtsey\nemkupwk.exe
C:\Windows\SysWOW64\bqpwtsey\nemkupwk.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2664
- 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:2692

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\nemkupwk.exe

Filesize
10.8MB

MD5
0b0898906722a8ee2e825c771e04c58b

SHA1
fbc3dbba047a25c6a476c1d9b93740417672713b

SHA256
49d42155dea8413440aa2a382adc1a37c1f6148c7b1e6815de214e0753116e7e

SHA512
5fb50a23a87fec07d34148e226cab417c38e51c7911e971142db29b8035db4dcfe60a592cad0259ed02fe84785e9465ec53b0dbccc6b5b6549ee90ffe9a7d8e3

Download Submit
memory/1996-7-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1996-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1996-1-0x00000000002F0000-0x00000000003F0000-memory.dmp

Filesize
1024KB

Download
memory/1996-6-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/1996-8-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1996-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2664-16-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2692-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2692-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2692-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2692-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2692-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads