tofsee | 9fc0dbdf5dccc389e47958cb38df30d6690ee4e06e8deec63ead62ddb273776f

General

Target

2025-02-01_4395d1bbc05ca36dccb62e2484276394_mafia.exe
Size

11.2MB
MD5

4395d1bbc05ca36dccb62e2484276394
SHA1

2528c32df15e7d76e77bf836a6c4e76511bcfa9b
SHA256

9fc0dbdf5dccc389e47958cb38df30d6690ee4e06e8deec63ead62ddb273776f
SHA512

f8b4b76eda8a1d9f1c1e6bb0b4ba7098e0183165489e97ffe980496c6bcb833cb93e39a7e0eb33dece0e3709843784be1841c987a4c5c4df042caf523a30b694
SSDEEP

24576:sEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZT:pfot

Score

10^/10

tofsee defense_evasion discovery execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

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
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
868	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\hkfokevg\ImagePath = "C:\\Windows\\SysWOW64\\hkfokevg\\usbclhws.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-1-5-21-805940606-1861219160-370298170-1000\Control Panel\International\Geo\Nation	2025-02-01_4395d1bbc05ca36dccb62e2484276394_mafia.exe

Deletes itself 1 IoCs

pid	Process
4488	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4736	usbclhws.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4736 set thread context of 4488	4736	usbclhws.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
1532	sc.exe
2452	sc.exe
2448	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
540	3108	WerFault.exe	82
2656	4736	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	2025-02-01_4395d1bbc05ca36dccb62e2484276394_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	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	usbclhws.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3108 wrote to memory of 1832	3108	2025-02-01_4395d1bbc05ca36dccb62e2484276394_mafia.exe	86
PID 3108 wrote to memory of 1832	3108	2025-02-01_4395d1bbc05ca36dccb62e2484276394_mafia.exe	86
PID 3108 wrote to memory of 1832	3108	2025-02-01_4395d1bbc05ca36dccb62e2484276394_mafia.exe	86
PID 3108 wrote to memory of 5108	3108	2025-02-01_4395d1bbc05ca36dccb62e2484276394_mafia.exe	88
PID 3108 wrote to memory of 5108	3108	2025-02-01_4395d1bbc05ca36dccb62e2484276394_mafia.exe	88
PID 3108 wrote to memory of 5108	3108	2025-02-01_4395d1bbc05ca36dccb62e2484276394_mafia.exe	88
PID 3108 wrote to memory of 1532	3108	2025-02-01_4395d1bbc05ca36dccb62e2484276394_mafia.exe	90
PID 3108 wrote to memory of 1532	3108	2025-02-01_4395d1bbc05ca36dccb62e2484276394_mafia.exe	90
PID 3108 wrote to memory of 1532	3108	2025-02-01_4395d1bbc05ca36dccb62e2484276394_mafia.exe	90
PID 3108 wrote to memory of 2452	3108	2025-02-01_4395d1bbc05ca36dccb62e2484276394_mafia.exe	92
PID 3108 wrote to memory of 2452	3108	2025-02-01_4395d1bbc05ca36dccb62e2484276394_mafia.exe	92
PID 3108 wrote to memory of 2452	3108	2025-02-01_4395d1bbc05ca36dccb62e2484276394_mafia.exe	92
PID 3108 wrote to memory of 2448	3108	2025-02-01_4395d1bbc05ca36dccb62e2484276394_mafia.exe	94
PID 3108 wrote to memory of 2448	3108	2025-02-01_4395d1bbc05ca36dccb62e2484276394_mafia.exe	94
PID 3108 wrote to memory of 2448	3108	2025-02-01_4395d1bbc05ca36dccb62e2484276394_mafia.exe	94
PID 3108 wrote to memory of 868	3108	2025-02-01_4395d1bbc05ca36dccb62e2484276394_mafia.exe	97
PID 3108 wrote to memory of 868	3108	2025-02-01_4395d1bbc05ca36dccb62e2484276394_mafia.exe	97
PID 3108 wrote to memory of 868	3108	2025-02-01_4395d1bbc05ca36dccb62e2484276394_mafia.exe	97
PID 4736 wrote to memory of 4488	4736	usbclhws.exe	102
PID 4736 wrote to memory of 4488	4736	usbclhws.exe	102
PID 4736 wrote to memory of 4488	4736	usbclhws.exe	102
PID 4736 wrote to memory of 4488	4736	usbclhws.exe	102
PID 4736 wrote to memory of 4488	4736	usbclhws.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-02-01_4395d1bbc05ca36dccb62e2484276394_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_4395d1bbc05ca36dccb62e2484276394_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3108
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hkfokevg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1832
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\usbclhws.exe" C:\Windows\SysWOW64\hkfokevg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5108
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create hkfokevg binPath= "C:\Windows\SysWOW64\hkfokevg\usbclhws.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_4395d1bbc05ca36dccb62e2484276394_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1532
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description hkfokevg "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2452
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start hkfokevg
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2448
- 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:868
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3108 -s 1196
  2⤵
  - Program crash
  PID:540

C:\Windows\SysWOW64\hkfokevg\usbclhws.exe
C:\Windows\SysWOW64\hkfokevg\usbclhws.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_4395d1bbc05ca36dccb62e2484276394_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4736
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4488
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4736 -s 512
  2⤵
  - Program crash
  PID:2656

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3108 -ip 3108
1⤵
PID:4340

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4736 -ip 4736
1⤵
PID:1196

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\usbclhws.exe

Filesize
13.9MB

MD5
65ed9b35225187447fa749b092486b93

SHA1
1aca980934bd0b3750fef633f267f6ca01dfcf6e

SHA256
03b8efbf6647f08f730bda9796de1d2282ed4262ec078800f096188856061459

SHA512
23e28a0e97bb3801a4b54fa951459e98139972e59387ea2174cdaba790939f16581737f129c6de96cdc2835526c6cdd40e5933b22090b893e13a18ea093803eb

Download Submit
memory/3108-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3108-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3108-2-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/3108-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3108-8-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/3108-1-0x00000000005C0000-0x00000000006C0000-memory.dmp

Filesize
1024KB

Download
memory/4488-14-0x0000000001220000-0x0000000001235000-memory.dmp

Filesize
84KB

Download
memory/4488-16-0x0000000001220000-0x0000000001235000-memory.dmp

Filesize
84KB

Download
memory/4488-17-0x0000000001220000-0x0000000001235000-memory.dmp

Filesize
84KB

Download
memory/4736-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4736-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4736-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4736-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads