tofsee | 95a6da773a66bee3c82e02f1823fbf567bda773845b7f8a22fec24574c36d08f

General

Target

2025-01-25_fe2a6350634d4ec53d6940cabcdb6c70_mafia.exe
Size

11.7MB
MD5

fe2a6350634d4ec53d6940cabcdb6c70
SHA1

c5ca60481439fdcf3c189173861246fc3df51c2e
SHA256

95a6da773a66bee3c82e02f1823fbf567bda773845b7f8a22fec24574c36d08f
SHA512

7e5415bb6a9025394bd35fdab07cfd0eb7e88815263c1c7b4fe0cea621235444d0c3dc19090d00a8da8fdf1642e84a392b6d1e73efcb4006ced82d6dc361a171
SSDEEP

24576:06WdLQkyQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ/:ZWdLQk

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
684	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\yjzrdzts\ImagePath = "C:\\Windows\\SysWOW64\\yjzrdzts\\fsebuhmw.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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	2025-01-25_fe2a6350634d4ec53d6940cabcdb6c70_mafia.exe

Deletes itself 1 IoCs

pid	Process
1860	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
896	fsebuhmw.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 896 set thread context of 1860	896	fsebuhmw.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
3644	sc.exe
4172	sc.exe
2360	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
884	2960	WerFault.exe	82
1452	896	WerFault.exe	93

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	2025-01-25_fe2a6350634d4ec53d6940cabcdb6c70_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fsebuhmw.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2960 wrote to memory of 2052	2960	2025-01-25_fe2a6350634d4ec53d6940cabcdb6c70_mafia.exe	83
PID 2960 wrote to memory of 2052	2960	2025-01-25_fe2a6350634d4ec53d6940cabcdb6c70_mafia.exe	83
PID 2960 wrote to memory of 2052	2960	2025-01-25_fe2a6350634d4ec53d6940cabcdb6c70_mafia.exe	83
PID 2960 wrote to memory of 2168	2960	2025-01-25_fe2a6350634d4ec53d6940cabcdb6c70_mafia.exe	85
PID 2960 wrote to memory of 2168	2960	2025-01-25_fe2a6350634d4ec53d6940cabcdb6c70_mafia.exe	85
PID 2960 wrote to memory of 2168	2960	2025-01-25_fe2a6350634d4ec53d6940cabcdb6c70_mafia.exe	85
PID 2960 wrote to memory of 3644	2960	2025-01-25_fe2a6350634d4ec53d6940cabcdb6c70_mafia.exe	87
PID 2960 wrote to memory of 3644	2960	2025-01-25_fe2a6350634d4ec53d6940cabcdb6c70_mafia.exe	87
PID 2960 wrote to memory of 3644	2960	2025-01-25_fe2a6350634d4ec53d6940cabcdb6c70_mafia.exe	87
PID 2960 wrote to memory of 4172	2960	2025-01-25_fe2a6350634d4ec53d6940cabcdb6c70_mafia.exe	89
PID 2960 wrote to memory of 4172	2960	2025-01-25_fe2a6350634d4ec53d6940cabcdb6c70_mafia.exe	89
PID 2960 wrote to memory of 4172	2960	2025-01-25_fe2a6350634d4ec53d6940cabcdb6c70_mafia.exe	89
PID 2960 wrote to memory of 2360	2960	2025-01-25_fe2a6350634d4ec53d6940cabcdb6c70_mafia.exe	91
PID 2960 wrote to memory of 2360	2960	2025-01-25_fe2a6350634d4ec53d6940cabcdb6c70_mafia.exe	91
PID 2960 wrote to memory of 2360	2960	2025-01-25_fe2a6350634d4ec53d6940cabcdb6c70_mafia.exe	91
PID 2960 wrote to memory of 684	2960	2025-01-25_fe2a6350634d4ec53d6940cabcdb6c70_mafia.exe	94
PID 2960 wrote to memory of 684	2960	2025-01-25_fe2a6350634d4ec53d6940cabcdb6c70_mafia.exe	94
PID 2960 wrote to memory of 684	2960	2025-01-25_fe2a6350634d4ec53d6940cabcdb6c70_mafia.exe	94
PID 896 wrote to memory of 1860	896	fsebuhmw.exe	100
PID 896 wrote to memory of 1860	896	fsebuhmw.exe	100
PID 896 wrote to memory of 1860	896	fsebuhmw.exe	100
PID 896 wrote to memory of 1860	896	fsebuhmw.exe	100
PID 896 wrote to memory of 1860	896	fsebuhmw.exe	100

C:\Users\Admin\AppData\Local\Temp\2025-01-25_fe2a6350634d4ec53d6940cabcdb6c70_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-25_fe2a6350634d4ec53d6940cabcdb6c70_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2960
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yjzrdzts\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2052
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fsebuhmw.exe" C:\Windows\SysWOW64\yjzrdzts\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2168
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create yjzrdzts binPath= "C:\Windows\SysWOW64\yjzrdzts\fsebuhmw.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-25_fe2a6350634d4ec53d6940cabcdb6c70_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3644
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description yjzrdzts "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4172
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start yjzrdzts
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2360
- 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:684
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2960 -s 1044
  2⤵
  - Program crash
  PID:884

C:\Windows\SysWOW64\yjzrdzts\fsebuhmw.exe
C:\Windows\SysWOW64\yjzrdzts\fsebuhmw.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-25_fe2a6350634d4ec53d6940cabcdb6c70_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:896
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1860
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 896 -s 512
  2⤵
  - Program crash
  PID:1452

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 2960 -ip 2960
1⤵
PID:2132

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 896 -ip 896
1⤵
PID:2704

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\fsebuhmw.exe

Filesize
10.2MB

MD5
c06e20edcb67f24d5cb96a166aae33b8

SHA1
0c7bc98fa832625466a7e6aef2137066b0bafbb7

SHA256
2a4ba2b59354fd8bdd11429db1d4af4353768f861e994f127f13bb6361d3af9f

SHA512
eddcb799b2f35eb1ad25846dee832713b9ccc300809078073cbf8fffbbdd978c4738a3ab71ed5107d4162578917f38eb7bb1a3f8719733a1c07c0c3dafd01d96

Download Submit
memory/896-13-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/896-12-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/896-11-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/896-18-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/1860-14-0x0000000000370000-0x0000000000385000-memory.dmp

Filesize
84KB

Download
memory/1860-16-0x0000000000370000-0x0000000000385000-memory.dmp

Filesize
84KB

Download
memory/1860-17-0x0000000000370000-0x0000000000385000-memory.dmp

Filesize
84KB

Download
memory/2960-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2960-2-0x00000000004B0000-0x00000000004C3000-memory.dmp

Filesize
76KB

Download
memory/2960-8-0x00000000004B0000-0x00000000004C3000-memory.dmp

Filesize
76KB

Download
memory/2960-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2960-7-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2960-1-0x0000000000530000-0x0000000000630000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads