tofsee | 4691b2fd4ae32c2e070e45a44ddf3ffe2a75df9c997c34fd8f0aaa8b25911305

General

Target

2025-02-01_bdfff05dd7ad370dd82adf8c9fd8bc94_mafia.exe
Size

14.3MB
MD5

bdfff05dd7ad370dd82adf8c9fd8bc94
SHA1

2b4a6cef5342cdc9925bd36acecb2e0ba55be21b
SHA256

4691b2fd4ae32c2e070e45a44ddf3ffe2a75df9c997c34fd8f0aaa8b25911305
SHA512

55a6fedebea9b742eef125823381d201606566571cea225ccc5ea1bbbc5c74655a330303ec63ac8bdbdf0355ecbbfe1e11c9640f411b7a2aea96a0baf5fb7629
SSDEEP

49152:hqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPn:hqtYc3

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
3452	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\bmvrvnyv\ImagePath = "C:\\Windows\\SysWOW64\\bmvrvnyv\\tphhetsg.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-1-5-21-805940606-1861219160-370298170-1000\Control Panel\International\Geo\Nation	2025-02-01_bdfff05dd7ad370dd82adf8c9fd8bc94_mafia.exe

Deletes itself 1 IoCs

pid	Process
4572	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2916	tphhetsg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2916 set thread context of 4572	2916	tphhetsg.exe	97

Launches sc.exe 3 IoCs

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

pid	Process
1284	sc.exe
3684	sc.exe
2052	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
3204	2916	WerFault.exe	96
3356	3796	WerFault.exe	83

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	svchost.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-01_bdfff05dd7ad370dd82adf8c9fd8bc94_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tphhetsg.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3796 wrote to memory of 1068	3796	2025-02-01_bdfff05dd7ad370dd82adf8c9fd8bc94_mafia.exe	86
PID 3796 wrote to memory of 1068	3796	2025-02-01_bdfff05dd7ad370dd82adf8c9fd8bc94_mafia.exe	86
PID 3796 wrote to memory of 1068	3796	2025-02-01_bdfff05dd7ad370dd82adf8c9fd8bc94_mafia.exe	86
PID 3796 wrote to memory of 320	3796	2025-02-01_bdfff05dd7ad370dd82adf8c9fd8bc94_mafia.exe	88
PID 3796 wrote to memory of 320	3796	2025-02-01_bdfff05dd7ad370dd82adf8c9fd8bc94_mafia.exe	88
PID 3796 wrote to memory of 320	3796	2025-02-01_bdfff05dd7ad370dd82adf8c9fd8bc94_mafia.exe	88
PID 3796 wrote to memory of 1284	3796	2025-02-01_bdfff05dd7ad370dd82adf8c9fd8bc94_mafia.exe	90
PID 3796 wrote to memory of 1284	3796	2025-02-01_bdfff05dd7ad370dd82adf8c9fd8bc94_mafia.exe	90
PID 3796 wrote to memory of 1284	3796	2025-02-01_bdfff05dd7ad370dd82adf8c9fd8bc94_mafia.exe	90
PID 3796 wrote to memory of 3684	3796	2025-02-01_bdfff05dd7ad370dd82adf8c9fd8bc94_mafia.exe	92
PID 3796 wrote to memory of 3684	3796	2025-02-01_bdfff05dd7ad370dd82adf8c9fd8bc94_mafia.exe	92
PID 3796 wrote to memory of 3684	3796	2025-02-01_bdfff05dd7ad370dd82adf8c9fd8bc94_mafia.exe	92
PID 3796 wrote to memory of 2052	3796	2025-02-01_bdfff05dd7ad370dd82adf8c9fd8bc94_mafia.exe	94
PID 3796 wrote to memory of 2052	3796	2025-02-01_bdfff05dd7ad370dd82adf8c9fd8bc94_mafia.exe	94
PID 3796 wrote to memory of 2052	3796	2025-02-01_bdfff05dd7ad370dd82adf8c9fd8bc94_mafia.exe	94
PID 2916 wrote to memory of 4572	2916	tphhetsg.exe	97
PID 2916 wrote to memory of 4572	2916	tphhetsg.exe	97
PID 2916 wrote to memory of 4572	2916	tphhetsg.exe	97
PID 2916 wrote to memory of 4572	2916	tphhetsg.exe	97
PID 2916 wrote to memory of 4572	2916	tphhetsg.exe	97
PID 3796 wrote to memory of 3452	3796	2025-02-01_bdfff05dd7ad370dd82adf8c9fd8bc94_mafia.exe	99
PID 3796 wrote to memory of 3452	3796	2025-02-01_bdfff05dd7ad370dd82adf8c9fd8bc94_mafia.exe	99
PID 3796 wrote to memory of 3452	3796	2025-02-01_bdfff05dd7ad370dd82adf8c9fd8bc94_mafia.exe	99

C:\Users\Admin\AppData\Local\Temp\2025-02-01_bdfff05dd7ad370dd82adf8c9fd8bc94_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_bdfff05dd7ad370dd82adf8c9fd8bc94_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3796
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bmvrvnyv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1068
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tphhetsg.exe" C:\Windows\SysWOW64\bmvrvnyv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:320
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bmvrvnyv binPath= "C:\Windows\SysWOW64\bmvrvnyv\tphhetsg.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_bdfff05dd7ad370dd82adf8c9fd8bc94_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1284
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bmvrvnyv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3684
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bmvrvnyv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2052
- 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:3452
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3796 -s 1272
  2⤵
  - Program crash
  PID:3356

C:\Windows\SysWOW64\bmvrvnyv\tphhetsg.exe
C:\Windows\SysWOW64\bmvrvnyv\tphhetsg.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_bdfff05dd7ad370dd82adf8c9fd8bc94_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2916
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4572
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2916 -s 508
  2⤵
  - Program crash
  PID:3204

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2916 -ip 2916
1⤵
PID:4816

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 3796 -ip 3796
1⤵
PID:3736

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tphhetsg.exe

Filesize
11.0MB

MD5
ce1d703ddf4fa438fbb93c9473578a71

SHA1
8bb244e49588139f57e090a795654701e57c6da1

SHA256
537dbeebe9b285a5174f1c3f1ca3b1096d57865d06d08a6c044c41347039eb83

SHA512
f26c125f538bce872909e4b243f4c3dd68d9231a260d42167202be9a8426aad7e4fd5eb8cfdb0ff2f16c4abe41bfb04b748be70619a990828caf1f8500fc9a90

Download Submit
memory/2916-10-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/3796-1-0x0000000002E80000-0x0000000002F80000-memory.dmp

Filesize
1024KB

Download
memory/3796-2-0x00000000001E0000-0x00000000001F3000-memory.dmp

Filesize
76KB

Download
memory/3796-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3796-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3796-12-0x00000000001E0000-0x00000000001F3000-memory.dmp

Filesize
76KB

Download
memory/3796-11-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/4572-8-0x0000000000140000-0x0000000000155000-memory.dmp

Filesize
84KB

Download
memory/4572-14-0x0000000000140000-0x0000000000155000-memory.dmp

Filesize
84KB

Download
memory/4572-15-0x0000000000140000-0x0000000000155000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads