tofsee | 5cef4a944d765e8174b066cf8141284a903cac39f8599c705e3591a5b32822be

General

Target

2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe
Size

12.5MB
MD5

b66d44938c2394f1cb57e53646b2462d
SHA1

e15dfebc9e91b04811f437dc6c794ac95dd138fa
SHA256

5cef4a944d765e8174b066cf8141284a903cac39f8599c705e3591a5b32822be
SHA512

eecdd062db81a76dd728f6fb691ca165e96cd9214db8190b47a1a1048b5991f7aa9e95cf00af7757b140af4d1b0869f305c3a65cfb2fc1055da9b080ed7e1c9c
SSDEEP

393216:RXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXm:0

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
3112	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\knvzdvux\ImagePath = "C:\\Windows\\SysWOW64\\knvzdvux\\ltimzxgg.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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe

Deletes itself 1 IoCs

pid	Process
3888	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4132	ltimzxgg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4132 set thread context of 3888	4132	ltimzxgg.exe	94

Launches sc.exe 3 IoCs

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

pid	Process
3136	sc.exe
2216	sc.exe
3168	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ltimzxgg.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	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3132 wrote to memory of 3088	3132	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	83
PID 3132 wrote to memory of 3088	3132	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	83
PID 3132 wrote to memory of 3088	3132	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	83
PID 3132 wrote to memory of 708	3132	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	85
PID 3132 wrote to memory of 708	3132	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	85
PID 3132 wrote to memory of 708	3132	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	85
PID 3132 wrote to memory of 3136	3132	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	87
PID 3132 wrote to memory of 3136	3132	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	87
PID 3132 wrote to memory of 3136	3132	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	87
PID 3132 wrote to memory of 2216	3132	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	89
PID 3132 wrote to memory of 2216	3132	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	89
PID 3132 wrote to memory of 2216	3132	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	89
PID 3132 wrote to memory of 3168	3132	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	91
PID 3132 wrote to memory of 3168	3132	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	91
PID 3132 wrote to memory of 3168	3132	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	91
PID 4132 wrote to memory of 3888	4132	ltimzxgg.exe	94
PID 4132 wrote to memory of 3888	4132	ltimzxgg.exe	94
PID 4132 wrote to memory of 3888	4132	ltimzxgg.exe	94
PID 4132 wrote to memory of 3888	4132	ltimzxgg.exe	94
PID 4132 wrote to memory of 3888	4132	ltimzxgg.exe	94
PID 3132 wrote to memory of 3112	3132	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	95
PID 3132 wrote to memory of 3112	3132	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	95
PID 3132 wrote to memory of 3112	3132	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	95

C:\Users\Admin\AppData\Local\Temp\2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3132
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\knvzdvux\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3088
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ltimzxgg.exe" C:\Windows\SysWOW64\knvzdvux\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:708
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create knvzdvux binPath= "C:\Windows\SysWOW64\knvzdvux\ltimzxgg.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3136
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description knvzdvux "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2216
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start knvzdvux
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3168
- 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:3112

C:\Windows\SysWOW64\knvzdvux\ltimzxgg.exe
C:\Windows\SysWOW64\knvzdvux\ltimzxgg.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4132
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3888

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\ltimzxgg.exe

Filesize
10.6MB

MD5
899921e0b2c6293274fd61304afbb2bd

SHA1
031545a257dd5a97ec9a8e2337b0d3f31b83d610

SHA256
2f45feaf95706bc5e76e01fc1ace463333203e50a97ff7a48c6e4127df529403

SHA512
5cf6ff2ec228e689512ad7d8185a11ae573495de7a9bef9562add1ff3484562daa527f24cad2a22ff12be12136685fe1486208a755853f23940f4c4f36dd095d

Download Submit
memory/3132-16-0x00000000001E0000-0x00000000001F3000-memory.dmp

Filesize
76KB

Download
memory/3132-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3132-2-0x00000000001E0000-0x00000000001F3000-memory.dmp

Filesize
76KB

Download
memory/3132-17-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3132-1-0x00000000005B0000-0x00000000006B0000-memory.dmp

Filesize
1024KB

Download
memory/3132-15-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3888-9-0x0000000000730000-0x0000000000745000-memory.dmp

Filesize
84KB

Download
memory/3888-12-0x0000000000730000-0x0000000000745000-memory.dmp

Filesize
84KB

Download
memory/3888-18-0x0000000000730000-0x0000000000745000-memory.dmp

Filesize
84KB

Download
memory/3888-19-0x0000000000730000-0x0000000000745000-memory.dmp

Filesize
84KB

Download
memory/3888-20-0x0000000000730000-0x0000000000745000-memory.dmp

Filesize
84KB

Download
memory/4132-8-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4132-14-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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