tofsee | 051741d8d6d134d515aebb60981557c501937354b3bc3d297afdea28133f024b

General

Target

2025-01-27_e6f0c5a7a20632b4c2a1c905d5e95fe3_mafia.exe
Size

12.6MB
MD5

e6f0c5a7a20632b4c2a1c905d5e95fe3
SHA1

7baff6380cde2b027fc67807648bd6ddd524b49d
SHA256

051741d8d6d134d515aebb60981557c501937354b3bc3d297afdea28133f024b
SHA512

8a92a92e7639346073f0955f22bf2a21a693490e01c6ed15e18e1079ece64eb31b4ad9489fbb96927585905884bc2b056044e186cd41f2c53077abcd35077085
SSDEEP

24576:eEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZf:3fot

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
4540	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\wyqljkg\ImagePath = "C:\\Windows\\SysWOW64\\wyqljkg\\wjvslydn.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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	2025-01-27_e6f0c5a7a20632b4c2a1c905d5e95fe3_mafia.exe

Deletes itself 1 IoCs

pid	Process
4700	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3384	wjvslydn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3384 set thread context of 4700	3384	wjvslydn.exe	108

Launches sc.exe 3 IoCs

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

pid	Process
3700	sc.exe
2132	sc.exe
3668	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
4084	4884	WerFault.exe	82
4460	3384	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	2025-01-27_e6f0c5a7a20632b4c2a1c905d5e95fe3_mafia.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	wjvslydn.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4884 wrote to memory of 1804	4884	2025-01-27_e6f0c5a7a20632b4c2a1c905d5e95fe3_mafia.exe	84
PID 4884 wrote to memory of 1804	4884	2025-01-27_e6f0c5a7a20632b4c2a1c905d5e95fe3_mafia.exe	84
PID 4884 wrote to memory of 1804	4884	2025-01-27_e6f0c5a7a20632b4c2a1c905d5e95fe3_mafia.exe	84
PID 4884 wrote to memory of 2108	4884	2025-01-27_e6f0c5a7a20632b4c2a1c905d5e95fe3_mafia.exe	86
PID 4884 wrote to memory of 2108	4884	2025-01-27_e6f0c5a7a20632b4c2a1c905d5e95fe3_mafia.exe	86
PID 4884 wrote to memory of 2108	4884	2025-01-27_e6f0c5a7a20632b4c2a1c905d5e95fe3_mafia.exe	86
PID 4884 wrote to memory of 2132	4884	2025-01-27_e6f0c5a7a20632b4c2a1c905d5e95fe3_mafia.exe	88
PID 4884 wrote to memory of 2132	4884	2025-01-27_e6f0c5a7a20632b4c2a1c905d5e95fe3_mafia.exe	88
PID 4884 wrote to memory of 2132	4884	2025-01-27_e6f0c5a7a20632b4c2a1c905d5e95fe3_mafia.exe	88
PID 4884 wrote to memory of 3668	4884	2025-01-27_e6f0c5a7a20632b4c2a1c905d5e95fe3_mafia.exe	92
PID 4884 wrote to memory of 3668	4884	2025-01-27_e6f0c5a7a20632b4c2a1c905d5e95fe3_mafia.exe	92
PID 4884 wrote to memory of 3668	4884	2025-01-27_e6f0c5a7a20632b4c2a1c905d5e95fe3_mafia.exe	92
PID 4884 wrote to memory of 3700	4884	2025-01-27_e6f0c5a7a20632b4c2a1c905d5e95fe3_mafia.exe	94
PID 4884 wrote to memory of 3700	4884	2025-01-27_e6f0c5a7a20632b4c2a1c905d5e95fe3_mafia.exe	94
PID 4884 wrote to memory of 3700	4884	2025-01-27_e6f0c5a7a20632b4c2a1c905d5e95fe3_mafia.exe	94
PID 4884 wrote to memory of 4540	4884	2025-01-27_e6f0c5a7a20632b4c2a1c905d5e95fe3_mafia.exe	99
PID 4884 wrote to memory of 4540	4884	2025-01-27_e6f0c5a7a20632b4c2a1c905d5e95fe3_mafia.exe	99
PID 4884 wrote to memory of 4540	4884	2025-01-27_e6f0c5a7a20632b4c2a1c905d5e95fe3_mafia.exe	99
PID 3384 wrote to memory of 4700	3384	wjvslydn.exe	108
PID 3384 wrote to memory of 4700	3384	wjvslydn.exe	108
PID 3384 wrote to memory of 4700	3384	wjvslydn.exe	108
PID 3384 wrote to memory of 4700	3384	wjvslydn.exe	108
PID 3384 wrote to memory of 4700	3384	wjvslydn.exe	108

C:\Users\Admin\AppData\Local\Temp\2025-01-27_e6f0c5a7a20632b4c2a1c905d5e95fe3_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-27_e6f0c5a7a20632b4c2a1c905d5e95fe3_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4884
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wyqljkg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1804
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wjvslydn.exe" C:\Windows\SysWOW64\wyqljkg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2108
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create wyqljkg binPath= "C:\Windows\SysWOW64\wyqljkg\wjvslydn.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-27_e6f0c5a7a20632b4c2a1c905d5e95fe3_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2132
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description wyqljkg "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3668
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start wyqljkg
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3700
- 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:4540
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4884 -s 868
  2⤵
  - Program crash
  PID:4084

C:\Windows\SysWOW64\wyqljkg\wjvslydn.exe
C:\Windows\SysWOW64\wyqljkg\wjvslydn.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-27_e6f0c5a7a20632b4c2a1c905d5e95fe3_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3384
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4700
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3384 -s 512
  2⤵
  - Program crash
  PID:4460

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4884 -ip 4884
1⤵
PID:3608

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3384 -ip 3384
1⤵
PID:2272

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\wjvslydn.exe

Filesize
14.6MB

MD5
eaaa33fba165a45395a43fc7ec05b1bc

SHA1
4ab77efaa1c8ad37cd8c605fb684d467f06d0db4

SHA256
14eb214a2f3fb3385fdc544cfeda6fbcccab2af6728b58683f53a597b9260e6d

SHA512
7d01895d08632def6e9d8bdbdedee9853be716c03b20be6b296ad1141c442d461d5f5c83fc4ef7def960bb6cf357d8848d3148ee38c4af60bc53fd3dac625e14

Download Submit
memory/3384-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3384-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3384-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3384-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4700-14-0x0000000000970000-0x0000000000985000-memory.dmp

Filesize
84KB

Download
memory/4700-16-0x0000000000970000-0x0000000000985000-memory.dmp

Filesize
84KB

Download
memory/4700-17-0x0000000000970000-0x0000000000985000-memory.dmp

Filesize
84KB

Download
memory/4884-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4884-1-0x00000000004C0000-0x00000000005C0000-memory.dmp

Filesize
1024KB

Download
memory/4884-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4884-8-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/4884-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4884-2-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads