tofsee | 254c7a5fc2f5a45a64374fb0f5a9eb834b6cc510e30cec6e1687a20a1a9a7157

General

Target

2025-02-01_f3a44bc30cb52a1f91e730cb059fedfa_mafia.exe
Size

13.9MB
MD5

f3a44bc30cb52a1f91e730cb059fedfa
SHA1

444732a85e3b065fc972fbcbeced19092c6c2fa2
SHA256

254c7a5fc2f5a45a64374fb0f5a9eb834b6cc510e30cec6e1687a20a1a9a7157
SHA512

07405001adc94099dd607fedc8ca11daeb7b859563269b5868332929cb887ff03c75194ac21d38704603748a751b92f7408a296e924a48c088f36fe7445217b4
SSDEEP

24576:NpomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttn:noo

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
3480	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\hjjcdtde\ImagePath = "C:\\Windows\\SysWOW64\\hjjcdtde\\rnffcrqe.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-1-5-21-2436272344-4274332273-444425594-1000\Control Panel\International\Geo\Nation	2025-02-01_f3a44bc30cb52a1f91e730cb059fedfa_mafia.exe

Deletes itself 1 IoCs

pid	Process
4080	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4156	rnffcrqe.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4156 set thread context of 4080	4156	rnffcrqe.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
2872	sc.exe
3456	sc.exe
5096	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
576	868	WerFault.exe	82
1672	4156	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_f3a44bc30cb52a1f91e730cb059fedfa_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	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	rnffcrqe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 868 wrote to memory of 2348	868	2025-02-01_f3a44bc30cb52a1f91e730cb059fedfa_mafia.exe	86
PID 868 wrote to memory of 2348	868	2025-02-01_f3a44bc30cb52a1f91e730cb059fedfa_mafia.exe	86
PID 868 wrote to memory of 2348	868	2025-02-01_f3a44bc30cb52a1f91e730cb059fedfa_mafia.exe	86
PID 868 wrote to memory of 2476	868	2025-02-01_f3a44bc30cb52a1f91e730cb059fedfa_mafia.exe	88
PID 868 wrote to memory of 2476	868	2025-02-01_f3a44bc30cb52a1f91e730cb059fedfa_mafia.exe	88
PID 868 wrote to memory of 2476	868	2025-02-01_f3a44bc30cb52a1f91e730cb059fedfa_mafia.exe	88
PID 868 wrote to memory of 2872	868	2025-02-01_f3a44bc30cb52a1f91e730cb059fedfa_mafia.exe	90
PID 868 wrote to memory of 2872	868	2025-02-01_f3a44bc30cb52a1f91e730cb059fedfa_mafia.exe	90
PID 868 wrote to memory of 2872	868	2025-02-01_f3a44bc30cb52a1f91e730cb059fedfa_mafia.exe	90
PID 868 wrote to memory of 3456	868	2025-02-01_f3a44bc30cb52a1f91e730cb059fedfa_mafia.exe	92
PID 868 wrote to memory of 3456	868	2025-02-01_f3a44bc30cb52a1f91e730cb059fedfa_mafia.exe	92
PID 868 wrote to memory of 3456	868	2025-02-01_f3a44bc30cb52a1f91e730cb059fedfa_mafia.exe	92
PID 868 wrote to memory of 5096	868	2025-02-01_f3a44bc30cb52a1f91e730cb059fedfa_mafia.exe	94
PID 868 wrote to memory of 5096	868	2025-02-01_f3a44bc30cb52a1f91e730cb059fedfa_mafia.exe	94
PID 868 wrote to memory of 5096	868	2025-02-01_f3a44bc30cb52a1f91e730cb059fedfa_mafia.exe	94
PID 868 wrote to memory of 3480	868	2025-02-01_f3a44bc30cb52a1f91e730cb059fedfa_mafia.exe	97
PID 868 wrote to memory of 3480	868	2025-02-01_f3a44bc30cb52a1f91e730cb059fedfa_mafia.exe	97
PID 868 wrote to memory of 3480	868	2025-02-01_f3a44bc30cb52a1f91e730cb059fedfa_mafia.exe	97
PID 4156 wrote to memory of 4080	4156	rnffcrqe.exe	102
PID 4156 wrote to memory of 4080	4156	rnffcrqe.exe	102
PID 4156 wrote to memory of 4080	4156	rnffcrqe.exe	102
PID 4156 wrote to memory of 4080	4156	rnffcrqe.exe	102
PID 4156 wrote to memory of 4080	4156	rnffcrqe.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-02-01_f3a44bc30cb52a1f91e730cb059fedfa_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_f3a44bc30cb52a1f91e730cb059fedfa_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:868
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hjjcdtde\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2348
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rnffcrqe.exe" C:\Windows\SysWOW64\hjjcdtde\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2476
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create hjjcdtde binPath= "C:\Windows\SysWOW64\hjjcdtde\rnffcrqe.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_f3a44bc30cb52a1f91e730cb059fedfa_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2872
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description hjjcdtde "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3456
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start hjjcdtde
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5096
- 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:3480
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 868 -s 1332
  2⤵
  - Program crash
  PID:576

C:\Windows\SysWOW64\hjjcdtde\rnffcrqe.exe
C:\Windows\SysWOW64\hjjcdtde\rnffcrqe.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_f3a44bc30cb52a1f91e730cb059fedfa_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4156
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4080
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4156 -s 512
  2⤵
  - Program crash
  PID:1672

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 868 -ip 868
1⤵
PID:2104

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4156 -ip 4156
1⤵
PID:4884

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\rnffcrqe.exe

Filesize
11.0MB

MD5
aaf5efa5d210b030df576013892751d5

SHA1
e36ebf9bce0b08061f3b37f75f974fe9b3b90277

SHA256
156eed58835eb587f232bd3c3417520cf5cced8d368fd2303b7eb6082c8c14f1

SHA512
2ab205a76a1805397837ef6b72d801a31cb0bb8de5c578b394d34638d0c5fd1a291f9f1ee5b26828e52ad5248e6a735fea61a69b3e01b16ee162c30f0007c2ed

Download Submit
memory/868-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/868-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/868-2-0x00000000004B0000-0x00000000004C3000-memory.dmp

Filesize
76KB

Download
memory/868-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/868-8-0x00000000004B0000-0x00000000004C3000-memory.dmp

Filesize
76KB

Download
memory/868-1-0x00000000006A0000-0x00000000007A0000-memory.dmp

Filesize
1024KB

Download
memory/4080-16-0x0000000000560000-0x0000000000575000-memory.dmp

Filesize
84KB

Download
memory/4080-14-0x0000000000560000-0x0000000000575000-memory.dmp

Filesize
84KB

Download
memory/4080-17-0x0000000000560000-0x0000000000575000-memory.dmp

Filesize
84KB

Download
memory/4156-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4156-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4156-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4156-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads