tofsee | 56014682e7b9dbd55ad1fe084c3539d0e38484365326eb4d1980984240c0c987

General

Target

2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe
Size

10.6MB
MD5

e836dbc909322a908071b5ef1cd29664
SHA1

f09b1592658eaafd025b0e1e9f9c8a0f7f4c78cf
SHA256

56014682e7b9dbd55ad1fe084c3539d0e38484365326eb4d1980984240c0c987
SHA512

167503ea073ae8c7120e8af0dac25e462373d338fe799c8162d07e406b9571e07ad7e6518c7498fc2227badebebf504bb5168828d9199d106350f46fb6f36c20
SSDEEP

49152:qqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPn:qqtYc3

Score

10^/10

tofsee discovery evasion 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

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
436	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\extcsxyt\ImagePath = "C:\\Windows\\SysWOW64\\extcsxyt\\lffwhqhj.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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe

Deletes itself 1 IoCs

pid	Process
2692	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3716	lffwhqhj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3716 set thread context of 2692	3716	lffwhqhj.exe	93

Launches sc.exe 3 IoCs

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

pid	Process
3832	sc.exe
3404	sc.exe
996	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
2612	3716	WerFault.exe	92
2408	2332	WerFault.exe	81

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	lffwhqhj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-09_e836dbc909322a908071b5ef1cd29664_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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2332 wrote to memory of 232	2332	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	82
PID 2332 wrote to memory of 232	2332	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	82
PID 2332 wrote to memory of 232	2332	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	82
PID 2332 wrote to memory of 1472	2332	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	84
PID 2332 wrote to memory of 1472	2332	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	84
PID 2332 wrote to memory of 1472	2332	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	84
PID 2332 wrote to memory of 3832	2332	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	86
PID 2332 wrote to memory of 3832	2332	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	86
PID 2332 wrote to memory of 3832	2332	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	86
PID 2332 wrote to memory of 3404	2332	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	88
PID 2332 wrote to memory of 3404	2332	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	88
PID 2332 wrote to memory of 3404	2332	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	88
PID 2332 wrote to memory of 996	2332	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	90
PID 2332 wrote to memory of 996	2332	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	90
PID 2332 wrote to memory of 996	2332	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	90
PID 3716 wrote to memory of 2692	3716	lffwhqhj.exe	93
PID 3716 wrote to memory of 2692	3716	lffwhqhj.exe	93
PID 3716 wrote to memory of 2692	3716	lffwhqhj.exe	93
PID 3716 wrote to memory of 2692	3716	lffwhqhj.exe	93
PID 3716 wrote to memory of 2692	3716	lffwhqhj.exe	93
PID 2332 wrote to memory of 436	2332	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	95
PID 2332 wrote to memory of 436	2332	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	95
PID 2332 wrote to memory of 436	2332	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	95

C:\Users\Admin\AppData\Local\Temp\2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2332
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\extcsxyt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:232
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\lffwhqhj.exe" C:\Windows\SysWOW64\extcsxyt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1472
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create extcsxyt binPath= "C:\Windows\SysWOW64\extcsxyt\lffwhqhj.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3832
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description extcsxyt "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3404
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start extcsxyt
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:996
- 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:436
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2332 -s 596
  2⤵
  - Program crash
  PID:2408

C:\Windows\SysWOW64\extcsxyt\lffwhqhj.exe
C:\Windows\SysWOW64\extcsxyt\lffwhqhj.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3716
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2692
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3716 -s 532
  2⤵
  - Program crash
  PID:2612

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3716 -ip 3716
1⤵
PID:1984

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 2332 -ip 2332
1⤵
PID:3060

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\lffwhqhj.exe

Filesize
14.5MB

MD5
2249cef1333eff73514f42adad7ea019

SHA1
775d2a02ca747114f0d30692ed77d880dc7d755d

SHA256
89eead8658c825bdcb6f4ea1b7fc47658fb6b96d906d266068a8a2e9f61cf2e1

SHA512
c0e99990e8718a9e906e142e72a5b0ba2dcdc367f88f5f9300a021e28a614d3cec5e40c6c411bea08a4b6692e8b82d399e32ccdebe13eda705ea6ac7b9f7abca

Download Submit
memory/2332-1-0x0000000002E30000-0x0000000002F30000-memory.dmp

Filesize
1024KB

Download
memory/2332-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2332-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2332-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2332-12-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2332-11-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/2692-8-0x00000000007D0000-0x00000000007E5000-memory.dmp

Filesize
84KB

Download
memory/2692-14-0x00000000007D0000-0x00000000007E5000-memory.dmp

Filesize
84KB

Download
memory/2692-15-0x00000000007D0000-0x00000000007E5000-memory.dmp

Filesize
84KB

Download
memory/3716-10-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads