tofsee | 3295a2f21d311fdbd67e14f850711290348c2dab2083679e8d7e889baa0d8bf8

General

Target

2025-02-08_074e365383f494618e0f56f7efcc316a_mafia.exe
Size

12.3MB
MD5

074e365383f494618e0f56f7efcc316a
SHA1

de7f3408490d1ca2afd42485eff47471e07afcc4
SHA256

3295a2f21d311fdbd67e14f850711290348c2dab2083679e8d7e889baa0d8bf8
SHA512

bb26fb53bc011db066600df8f6498efbe0dbf3896ad14c9bbb3a50aa734c27c3b4a32338448e377a14ddad2dbf13ea4a92a6543cf7ac5ee0532e0482e307a962
SSDEEP

24576:ypomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttP:Woo

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
2296	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\iibtgrew\ImagePath = "C:\\Windows\\SysWOW64\\iibtgrew\\clfkcbws.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-1-5-21-194335498-2604837297-537231065-1000\Control Panel\International\Geo\Nation	2025-02-08_074e365383f494618e0f56f7efcc316a_mafia.exe

Deletes itself 1 IoCs

pid	Process
4500	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4052	clfkcbws.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4052 set thread context of 4500	4052	clfkcbws.exe	107

Launches sc.exe 3 IoCs

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

pid	Process
448	sc.exe
1708	sc.exe
2572	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
2540	1240	WerFault.exe	87
4508	4052	WerFault.exe	104

System Location Discovery: System Language Discovery 1 TTPs 10 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	netsh.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-08_074e365383f494618e0f56f7efcc316a_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	clfkcbws.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MicrosoftEdgeUpdate.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
452	MicrosoftEdgeUpdate.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1240 wrote to memory of 1628	1240	2025-02-08_074e365383f494618e0f56f7efcc316a_mafia.exe	91
PID 1240 wrote to memory of 1628	1240	2025-02-08_074e365383f494618e0f56f7efcc316a_mafia.exe	91
PID 1240 wrote to memory of 1628	1240	2025-02-08_074e365383f494618e0f56f7efcc316a_mafia.exe	91
PID 1240 wrote to memory of 4064	1240	2025-02-08_074e365383f494618e0f56f7efcc316a_mafia.exe	93
PID 1240 wrote to memory of 4064	1240	2025-02-08_074e365383f494618e0f56f7efcc316a_mafia.exe	93
PID 1240 wrote to memory of 4064	1240	2025-02-08_074e365383f494618e0f56f7efcc316a_mafia.exe	93
PID 1240 wrote to memory of 448	1240	2025-02-08_074e365383f494618e0f56f7efcc316a_mafia.exe	95
PID 1240 wrote to memory of 448	1240	2025-02-08_074e365383f494618e0f56f7efcc316a_mafia.exe	95
PID 1240 wrote to memory of 448	1240	2025-02-08_074e365383f494618e0f56f7efcc316a_mafia.exe	95
PID 1240 wrote to memory of 1708	1240	2025-02-08_074e365383f494618e0f56f7efcc316a_mafia.exe	97
PID 1240 wrote to memory of 1708	1240	2025-02-08_074e365383f494618e0f56f7efcc316a_mafia.exe	97
PID 1240 wrote to memory of 1708	1240	2025-02-08_074e365383f494618e0f56f7efcc316a_mafia.exe	97
PID 1240 wrote to memory of 2572	1240	2025-02-08_074e365383f494618e0f56f7efcc316a_mafia.exe	99
PID 1240 wrote to memory of 2572	1240	2025-02-08_074e365383f494618e0f56f7efcc316a_mafia.exe	99
PID 1240 wrote to memory of 2572	1240	2025-02-08_074e365383f494618e0f56f7efcc316a_mafia.exe	99
PID 1240 wrote to memory of 2296	1240	2025-02-08_074e365383f494618e0f56f7efcc316a_mafia.exe	101
PID 1240 wrote to memory of 2296	1240	2025-02-08_074e365383f494618e0f56f7efcc316a_mafia.exe	101
PID 1240 wrote to memory of 2296	1240	2025-02-08_074e365383f494618e0f56f7efcc316a_mafia.exe	101
PID 4052 wrote to memory of 4500	4052	clfkcbws.exe	107
PID 4052 wrote to memory of 4500	4052	clfkcbws.exe	107
PID 4052 wrote to memory of 4500	4052	clfkcbws.exe	107
PID 4052 wrote to memory of 4500	4052	clfkcbws.exe	107
PID 4052 wrote to memory of 4500	4052	clfkcbws.exe	107

C:\Users\Admin\AppData\Local\Temp\2025-02-08_074e365383f494618e0f56f7efcc316a_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-08_074e365383f494618e0f56f7efcc316a_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1240
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\iibtgrew\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1628
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\clfkcbws.exe" C:\Windows\SysWOW64\iibtgrew\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4064
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create iibtgrew binPath= "C:\Windows\SysWOW64\iibtgrew\clfkcbws.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-08_074e365383f494618e0f56f7efcc316a_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:448
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description iibtgrew "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1708
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start iibtgrew
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2572
- 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:2296
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1240 -s 1036
  2⤵
  - Program crash
  PID:2540

C:\Windows\SysWOW64\iibtgrew\clfkcbws.exe
C:\Windows\SysWOW64\iibtgrew\clfkcbws.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-08_074e365383f494618e0f56f7efcc316a_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4052
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4500
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4052 -s 520
  2⤵
  - Program crash
  PID:4508

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1240 -ip 1240
1⤵
PID:2708

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4052 -ip 4052
1⤵
PID:856

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIxIiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDcxNzgiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxOTY4MDM3MTAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1NDAwMjM0ODYyIi8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:452

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

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
11.7MB

MD5
3a12f8453659bd4fda5b73ff5fda9977

SHA1
d5e2c36a015f9fa026b8789efff8d41443809b13

SHA256
483e9fd5b3b504cd3771b980fbab791586e6417a97136dcdab6d76a5ab4b789f

SHA512
370ed17e856385547e4e4ff52c7fbca6cb1fffbd14733b1d0c2b5f9b3df9bc2ce08bdc12adc60491cb7f87c3edfe6852a7c7dcce3ab186ebbc5c8fc718b391a5

Download Submit
memory/1240-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1240-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1240-2-0x0000000000670000-0x0000000000683000-memory.dmp

Filesize
76KB

Download
memory/1240-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1240-8-0x0000000000670000-0x0000000000683000-memory.dmp

Filesize
76KB

Download
memory/1240-1-0x00000000007C0000-0x00000000008C0000-memory.dmp

Filesize
1024KB

Download
memory/4052-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4052-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4052-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4052-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4500-16-0x0000000000F40000-0x0000000000F55000-memory.dmp

Filesize
84KB

Download
memory/4500-14-0x0000000000F40000-0x0000000000F55000-memory.dmp

Filesize
84KB

Download
memory/4500-17-0x0000000000F40000-0x0000000000F55000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads