tofsee | 387da9f1c0db0a113e160f090cc338a0a0287185142260611399b23f0b7b3fa6

General

Target

2025-01-31_60c5a5e092b4cf3d120e3592142e6288_mafia.exe
Size

13.8MB
MD5

60c5a5e092b4cf3d120e3592142e6288
SHA1

e72d477b6c9e5ae53501b6ff712938245d0d444b
SHA256

387da9f1c0db0a113e160f090cc338a0a0287185142260611399b23f0b7b3fa6
SHA512

a1f6092002d96ded9a11bf767dcd780945f9214e0519d323f9c703a6764fa8d51a6d78cffe066709423800c547301a856112f89723739cb4033d66adc77d2608
SSDEEP

393216:2XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX3:

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
1500	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\gbvmirkd\ImagePath = "C:\\Windows\\SysWOW64\\gbvmirkd\\vmuscxes.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-1-5-21-4174397412-4125106315-2776226590-1000\Control Panel\International\Geo\Nation	2025-01-31_60c5a5e092b4cf3d120e3592142e6288_mafia.exe

Deletes itself 1 IoCs

pid	Process
3756	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3340	vmuscxes.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3340 set thread context of 3756	3340	vmuscxes.exe	99

Launches sc.exe 3 IoCs

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

pid	Process
4476	sc.exe
2288	sc.exe
2684	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	2025-01-31_60c5a5e092b4cf3d120e3592142e6288_mafia.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	svchost.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	vmuscxes.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3240 wrote to memory of 2444	3240	2025-01-31_60c5a5e092b4cf3d120e3592142e6288_mafia.exe	86
PID 3240 wrote to memory of 2444	3240	2025-01-31_60c5a5e092b4cf3d120e3592142e6288_mafia.exe	86
PID 3240 wrote to memory of 2444	3240	2025-01-31_60c5a5e092b4cf3d120e3592142e6288_mafia.exe	86
PID 3240 wrote to memory of 2928	3240	2025-01-31_60c5a5e092b4cf3d120e3592142e6288_mafia.exe	88
PID 3240 wrote to memory of 2928	3240	2025-01-31_60c5a5e092b4cf3d120e3592142e6288_mafia.exe	88
PID 3240 wrote to memory of 2928	3240	2025-01-31_60c5a5e092b4cf3d120e3592142e6288_mafia.exe	88
PID 3240 wrote to memory of 2288	3240	2025-01-31_60c5a5e092b4cf3d120e3592142e6288_mafia.exe	90
PID 3240 wrote to memory of 2288	3240	2025-01-31_60c5a5e092b4cf3d120e3592142e6288_mafia.exe	90
PID 3240 wrote to memory of 2288	3240	2025-01-31_60c5a5e092b4cf3d120e3592142e6288_mafia.exe	90
PID 3240 wrote to memory of 2684	3240	2025-01-31_60c5a5e092b4cf3d120e3592142e6288_mafia.exe	92
PID 3240 wrote to memory of 2684	3240	2025-01-31_60c5a5e092b4cf3d120e3592142e6288_mafia.exe	92
PID 3240 wrote to memory of 2684	3240	2025-01-31_60c5a5e092b4cf3d120e3592142e6288_mafia.exe	92
PID 3240 wrote to memory of 4476	3240	2025-01-31_60c5a5e092b4cf3d120e3592142e6288_mafia.exe	94
PID 3240 wrote to memory of 4476	3240	2025-01-31_60c5a5e092b4cf3d120e3592142e6288_mafia.exe	94
PID 3240 wrote to memory of 4476	3240	2025-01-31_60c5a5e092b4cf3d120e3592142e6288_mafia.exe	94
PID 3240 wrote to memory of 1500	3240	2025-01-31_60c5a5e092b4cf3d120e3592142e6288_mafia.exe	97
PID 3240 wrote to memory of 1500	3240	2025-01-31_60c5a5e092b4cf3d120e3592142e6288_mafia.exe	97
PID 3240 wrote to memory of 1500	3240	2025-01-31_60c5a5e092b4cf3d120e3592142e6288_mafia.exe	97
PID 3340 wrote to memory of 3756	3340	vmuscxes.exe	99
PID 3340 wrote to memory of 3756	3340	vmuscxes.exe	99
PID 3340 wrote to memory of 3756	3340	vmuscxes.exe	99
PID 3340 wrote to memory of 3756	3340	vmuscxes.exe	99
PID 3340 wrote to memory of 3756	3340	vmuscxes.exe	99

C:\Users\Admin\AppData\Local\Temp\2025-01-31_60c5a5e092b4cf3d120e3592142e6288_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-31_60c5a5e092b4cf3d120e3592142e6288_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3240
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gbvmirkd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2444
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vmuscxes.exe" C:\Windows\SysWOW64\gbvmirkd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2928
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create gbvmirkd binPath= "C:\Windows\SysWOW64\gbvmirkd\vmuscxes.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-31_60c5a5e092b4cf3d120e3592142e6288_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2288
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description gbvmirkd "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2684
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start gbvmirkd
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4476
- 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:1500

C:\Windows\SysWOW64\gbvmirkd\vmuscxes.exe
C:\Windows\SysWOW64\gbvmirkd\vmuscxes.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-31_60c5a5e092b4cf3d120e3592142e6288_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3340
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3756

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\vmuscxes.exe

Filesize
13.8MB

MD5
77175fa95c3cbb65b5d54f04968b4d5a

SHA1
3ce9643b70e58c5307f178b8c7992fb7765fe224

SHA256
8e4b898f5492f58fbd75e2d5467a88d847b31103e2f37b7e0d683e5741b2ff9a

SHA512
f582187a7c098a365650f8467667ec354646cc1ad9f5669a9169b53a426c9b993cf32294a0ea57e6fd08903e7515afd834a9c3ca1b758e487356830642cd059b

Download Submit
memory/3240-7-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3240-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3240-2-0x0000000000570000-0x0000000000583000-memory.dmp

Filesize
76KB

Download
memory/3240-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3240-8-0x0000000000570000-0x0000000000583000-memory.dmp

Filesize
76KB

Download
memory/3240-1-0x00000000007B0000-0x00000000008B0000-memory.dmp

Filesize
1024KB

Download
memory/3340-12-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3340-11-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3340-18-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3756-17-0x0000000000EE0000-0x0000000000EF5000-memory.dmp

Filesize
84KB

Download
memory/3756-19-0x0000000000EE0000-0x0000000000EF5000-memory.dmp

Filesize
84KB

Download
memory/3756-13-0x0000000000EE0000-0x0000000000EF5000-memory.dmp

Filesize
84KB

Download
memory/3756-20-0x0000000000EE0000-0x0000000000EF5000-memory.dmp

Filesize
84KB

Download
memory/3756-21-0x0000000000EE0000-0x0000000000EF5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads