tofsee | cc8125d8df82f9a50e6dbb64c79ca62280c1c54e34d49be178d79547ee78e832

General

Target

2025-02-02_fd6a280e5fff87a9f918e9ef3d084213_mafia.exe
Size

13.8MB
MD5

fd6a280e5fff87a9f918e9ef3d084213
SHA1

ba66a7db8fd8907d793460708329f71f84e9af15
SHA256

cc8125d8df82f9a50e6dbb64c79ca62280c1c54e34d49be178d79547ee78e832
SHA512

b00cf8e2483f6b27d5463d9b86db53707e8d1568192df6b4b13ede7ca16bae50793e091a5996aeeeb7459481d09962ec43b94d1717b80d14d8e8049bc9a72547
SSDEEP

24576:l6WdLQkyQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQf:kWdLQk

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
2020	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\ivergqnw\ImagePath = "C:\\Windows\\SysWOW64\\ivergqnw\\xtllixwk.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-1-5-21-2089655958-977706906-1981639424-1000\Control Panel\International\Geo\Nation	2025-02-02_fd6a280e5fff87a9f918e9ef3d084213_mafia.exe

Deletes itself 1 IoCs

pid	Process
8	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4848	xtllixwk.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4848 set thread context of 8	4848	xtllixwk.exe	105

Launches sc.exe 3 IoCs

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

pid	Process
4532	sc.exe
4996	sc.exe
4844	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2352	1904	WerFault.exe	82
3308	4848	WerFault.exe	99

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	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	xtllixwk.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-02_fd6a280e5fff87a9f918e9ef3d084213_mafia.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1904 wrote to memory of 3160	1904	2025-02-02_fd6a280e5fff87a9f918e9ef3d084213_mafia.exe	89
PID 1904 wrote to memory of 3160	1904	2025-02-02_fd6a280e5fff87a9f918e9ef3d084213_mafia.exe	89
PID 1904 wrote to memory of 3160	1904	2025-02-02_fd6a280e5fff87a9f918e9ef3d084213_mafia.exe	89
PID 1904 wrote to memory of 1512	1904	2025-02-02_fd6a280e5fff87a9f918e9ef3d084213_mafia.exe	91
PID 1904 wrote to memory of 1512	1904	2025-02-02_fd6a280e5fff87a9f918e9ef3d084213_mafia.exe	91
PID 1904 wrote to memory of 1512	1904	2025-02-02_fd6a280e5fff87a9f918e9ef3d084213_mafia.exe	91
PID 1904 wrote to memory of 4532	1904	2025-02-02_fd6a280e5fff87a9f918e9ef3d084213_mafia.exe	93
PID 1904 wrote to memory of 4532	1904	2025-02-02_fd6a280e5fff87a9f918e9ef3d084213_mafia.exe	93
PID 1904 wrote to memory of 4532	1904	2025-02-02_fd6a280e5fff87a9f918e9ef3d084213_mafia.exe	93
PID 1904 wrote to memory of 4996	1904	2025-02-02_fd6a280e5fff87a9f918e9ef3d084213_mafia.exe	95
PID 1904 wrote to memory of 4996	1904	2025-02-02_fd6a280e5fff87a9f918e9ef3d084213_mafia.exe	95
PID 1904 wrote to memory of 4996	1904	2025-02-02_fd6a280e5fff87a9f918e9ef3d084213_mafia.exe	95
PID 1904 wrote to memory of 4844	1904	2025-02-02_fd6a280e5fff87a9f918e9ef3d084213_mafia.exe	97
PID 1904 wrote to memory of 4844	1904	2025-02-02_fd6a280e5fff87a9f918e9ef3d084213_mafia.exe	97
PID 1904 wrote to memory of 4844	1904	2025-02-02_fd6a280e5fff87a9f918e9ef3d084213_mafia.exe	97
PID 1904 wrote to memory of 2020	1904	2025-02-02_fd6a280e5fff87a9f918e9ef3d084213_mafia.exe	100
PID 1904 wrote to memory of 2020	1904	2025-02-02_fd6a280e5fff87a9f918e9ef3d084213_mafia.exe	100
PID 1904 wrote to memory of 2020	1904	2025-02-02_fd6a280e5fff87a9f918e9ef3d084213_mafia.exe	100
PID 4848 wrote to memory of 8	4848	xtllixwk.exe	105
PID 4848 wrote to memory of 8	4848	xtllixwk.exe	105
PID 4848 wrote to memory of 8	4848	xtllixwk.exe	105
PID 4848 wrote to memory of 8	4848	xtllixwk.exe	105
PID 4848 wrote to memory of 8	4848	xtllixwk.exe	105

C:\Users\Admin\AppData\Local\Temp\2025-02-02_fd6a280e5fff87a9f918e9ef3d084213_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-02_fd6a280e5fff87a9f918e9ef3d084213_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1904
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ivergqnw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3160
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xtllixwk.exe" C:\Windows\SysWOW64\ivergqnw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1512
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ivergqnw binPath= "C:\Windows\SysWOW64\ivergqnw\xtllixwk.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-02_fd6a280e5fff87a9f918e9ef3d084213_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4532
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ivergqnw "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4996
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ivergqnw
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4844
- 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:2020
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1904 -s 660
  2⤵
  - Program crash
  PID:2352

C:\Windows\SysWOW64\ivergqnw\xtllixwk.exe
C:\Windows\SysWOW64\ivergqnw\xtllixwk.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-02_fd6a280e5fff87a9f918e9ef3d084213_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4848
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:8
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4848 -s 560
  2⤵
  - Program crash
  PID:3308

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 1904 -ip 1904
1⤵
PID:1212

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 4848 -ip 4848
1⤵
PID:1484

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\xtllixwk.exe

Filesize
13.9MB

MD5
f16580d48c63b3e508977f9e10e18606

SHA1
4b3d57d5cd3811d01cd15615104c13cdea95f8fc

SHA256
25ca63b24a03f4baccf74d6036a2460981a3ea73f2c789de367176f6c93d3120

SHA512
912dae5eb45283fa6a4a7f840041ca18e4476d51dd9601c1cfb03d27a110e139c0db855865da9e44c7d1f394a9465f13e261911c9638e7b066680f69d08fed05

Download Submit
memory/8-14-0x0000000000980000-0x0000000000995000-memory.dmp

Filesize
84KB

Download
memory/8-17-0x0000000000980000-0x0000000000995000-memory.dmp

Filesize
84KB

Download
memory/8-16-0x0000000000980000-0x0000000000995000-memory.dmp

Filesize
84KB

Download
memory/1904-8-0x0000000000770000-0x0000000000783000-memory.dmp

Filesize
76KB

Download
memory/1904-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1904-1-0x0000000000820000-0x0000000000920000-memory.dmp

Filesize
1024KB

Download
memory/1904-7-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/1904-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1904-2-0x0000000000770000-0x0000000000783000-memory.dmp

Filesize
76KB

Download
memory/4848-12-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4848-11-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4848-13-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4848-19-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads