tofsee | 7415fec52dfd7122aa4616a22fa1731a5c7039da44a3f073f75488c9f3d9f5e5

General

Target

2025-02-02_e5f1bb8c7a7ed1461b9a5ddfb21378be_mafia.exe
Size

14.1MB
MD5

e5f1bb8c7a7ed1461b9a5ddfb21378be
SHA1

e49416e4651f8ba468c2f8e8b67d49e1ad5de6a8
SHA256

7415fec52dfd7122aa4616a22fa1731a5c7039da44a3f073f75488c9f3d9f5e5
SHA512

56c3c99f2e7f209bb85d08795e3589a63409175bab7b149b7eca125426740c7be40b14f90f0539c49ca21dfd1e49cb92953022d7f06b73df5709dcddb18c8a00
SSDEEP

24576:3EfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ1:Ufot

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
3500	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\yhfqsmvu\ImagePath = "C:\\Windows\\SysWOW64\\yhfqsmvu\\ckzdqoxx.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-1-5-21-1121399784-3202166597-3503557106-1000\Control Panel\International\Geo\Nation	2025-02-02_e5f1bb8c7a7ed1461b9a5ddfb21378be_mafia.exe

Deletes itself 1 IoCs

pid	Process
4812	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1656	ckzdqoxx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1656 set thread context of 4812	1656	ckzdqoxx.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
2908	sc.exe
4996	sc.exe
2092	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
4784	4392	WerFault.exe	82
640	1656	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ckzdqoxx.exe
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	2025-02-02_e5f1bb8c7a7ed1461b9a5ddfb21378be_mafia.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4392 wrote to memory of 1412	4392	2025-02-02_e5f1bb8c7a7ed1461b9a5ddfb21378be_mafia.exe	86
PID 4392 wrote to memory of 1412	4392	2025-02-02_e5f1bb8c7a7ed1461b9a5ddfb21378be_mafia.exe	86
PID 4392 wrote to memory of 1412	4392	2025-02-02_e5f1bb8c7a7ed1461b9a5ddfb21378be_mafia.exe	86
PID 4392 wrote to memory of 3628	4392	2025-02-02_e5f1bb8c7a7ed1461b9a5ddfb21378be_mafia.exe	88
PID 4392 wrote to memory of 3628	4392	2025-02-02_e5f1bb8c7a7ed1461b9a5ddfb21378be_mafia.exe	88
PID 4392 wrote to memory of 3628	4392	2025-02-02_e5f1bb8c7a7ed1461b9a5ddfb21378be_mafia.exe	88
PID 4392 wrote to memory of 2908	4392	2025-02-02_e5f1bb8c7a7ed1461b9a5ddfb21378be_mafia.exe	90
PID 4392 wrote to memory of 2908	4392	2025-02-02_e5f1bb8c7a7ed1461b9a5ddfb21378be_mafia.exe	90
PID 4392 wrote to memory of 2908	4392	2025-02-02_e5f1bb8c7a7ed1461b9a5ddfb21378be_mafia.exe	90
PID 4392 wrote to memory of 4996	4392	2025-02-02_e5f1bb8c7a7ed1461b9a5ddfb21378be_mafia.exe	92
PID 4392 wrote to memory of 4996	4392	2025-02-02_e5f1bb8c7a7ed1461b9a5ddfb21378be_mafia.exe	92
PID 4392 wrote to memory of 4996	4392	2025-02-02_e5f1bb8c7a7ed1461b9a5ddfb21378be_mafia.exe	92
PID 4392 wrote to memory of 2092	4392	2025-02-02_e5f1bb8c7a7ed1461b9a5ddfb21378be_mafia.exe	94
PID 4392 wrote to memory of 2092	4392	2025-02-02_e5f1bb8c7a7ed1461b9a5ddfb21378be_mafia.exe	94
PID 4392 wrote to memory of 2092	4392	2025-02-02_e5f1bb8c7a7ed1461b9a5ddfb21378be_mafia.exe	94
PID 4392 wrote to memory of 3500	4392	2025-02-02_e5f1bb8c7a7ed1461b9a5ddfb21378be_mafia.exe	97
PID 4392 wrote to memory of 3500	4392	2025-02-02_e5f1bb8c7a7ed1461b9a5ddfb21378be_mafia.exe	97
PID 4392 wrote to memory of 3500	4392	2025-02-02_e5f1bb8c7a7ed1461b9a5ddfb21378be_mafia.exe	97
PID 1656 wrote to memory of 4812	1656	ckzdqoxx.exe	102
PID 1656 wrote to memory of 4812	1656	ckzdqoxx.exe	102
PID 1656 wrote to memory of 4812	1656	ckzdqoxx.exe	102
PID 1656 wrote to memory of 4812	1656	ckzdqoxx.exe	102
PID 1656 wrote to memory of 4812	1656	ckzdqoxx.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-02-02_e5f1bb8c7a7ed1461b9a5ddfb21378be_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-02_e5f1bb8c7a7ed1461b9a5ddfb21378be_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4392
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yhfqsmvu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1412
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ckzdqoxx.exe" C:\Windows\SysWOW64\yhfqsmvu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3628
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create yhfqsmvu binPath= "C:\Windows\SysWOW64\yhfqsmvu\ckzdqoxx.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-02_e5f1bb8c7a7ed1461b9a5ddfb21378be_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2908
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description yhfqsmvu "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4996
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start yhfqsmvu
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2092
- 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:3500
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4392 -s 1268
  2⤵
  - Program crash
  PID:4784

C:\Windows\SysWOW64\yhfqsmvu\ckzdqoxx.exe
C:\Windows\SysWOW64\yhfqsmvu\ckzdqoxx.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-02_e5f1bb8c7a7ed1461b9a5ddfb21378be_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1656
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4812
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1656 -s 532
  2⤵
  - Program crash
  PID:640

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4392 -ip 4392
1⤵
PID:432

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1656 -ip 1656
1⤵
PID:4980

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\ckzdqoxx.exe

Filesize
12.8MB

MD5
4c13e52d158078717a22160265cdf4a5

SHA1
823c6fdd861cbe0e694004e4ee9569cf7e46ca51

SHA256
c52e65602664d1504fecc9b38c392829ebbd2b26316cb87b1c534a9828483ff2

SHA512
ce97260b2b97ec5563c08a2d2b00e7ce3520aed35089fda0f1b7b2cc05a7c101b15cf780fffba0ff48c19ebf7b1f4e5670a0df23a4f405b7a5bbd9f1e0b43017

Download Submit
memory/1656-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1656-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1656-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1656-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4392-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4392-2-0x00000000001D0000-0x00000000001E3000-memory.dmp

Filesize
76KB

Download
memory/4392-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4392-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4392-8-0x00000000001D0000-0x00000000001E3000-memory.dmp

Filesize
76KB

Download
memory/4392-1-0x0000000000640000-0x0000000000740000-memory.dmp

Filesize
1024KB

Download
memory/4812-14-0x0000000000B20000-0x0000000000B35000-memory.dmp

Filesize
84KB

Download
memory/4812-16-0x0000000000B20000-0x0000000000B35000-memory.dmp

Filesize
84KB

Download
memory/4812-17-0x0000000000B20000-0x0000000000B35000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads