tofsee | cd2ed79a77da92a3dffddabf2825cb5bc3f373a0d58da2117b42163bb7e154bb

General

Target

2025-02-02_a7c716f5d936c9276944313d870ed67e_mafia.exe
Size

14.0MB
MD5

a7c716f5d936c9276944313d870ed67e
SHA1

896af91856ec814cb4be69d5e81ad86d91626a62
SHA256

cd2ed79a77da92a3dffddabf2825cb5bc3f373a0d58da2117b42163bb7e154bb
SHA512

c1371b705a83346eb4d1e8dbac89e9b42748b4d4233f9a8b5b001ab24ab874d02ce5977d29515912eb82e293629c98654cbafb08ae411808375442a77330d593
SSDEEP

24576:+6WdLQkyQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQo:vWdLQk

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
4124	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\zxclrleq\ImagePath = "C:\\Windows\\SysWOW64\\zxclrleq\\gaarclce.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-1-5-21-4174397412-4125106315-2776226590-1000\Control Panel\International\Geo\Nation	2025-02-02_a7c716f5d936c9276944313d870ed67e_mafia.exe

Deletes itself 1 IoCs

pid	Process
2796	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4444	gaarclce.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4444 set thread context of 2796	4444	gaarclce.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
3856	sc.exe
4484	sc.exe
2740	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
3716	2540	WerFault.exe	82
3580	4444	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	2025-02-02_a7c716f5d936c9276944313d870ed67e_mafia.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gaarclce.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 2540 wrote to memory of 4324	2540	2025-02-02_a7c716f5d936c9276944313d870ed67e_mafia.exe	86
PID 2540 wrote to memory of 4324	2540	2025-02-02_a7c716f5d936c9276944313d870ed67e_mafia.exe	86
PID 2540 wrote to memory of 4324	2540	2025-02-02_a7c716f5d936c9276944313d870ed67e_mafia.exe	86
PID 2540 wrote to memory of 4048	2540	2025-02-02_a7c716f5d936c9276944313d870ed67e_mafia.exe	88
PID 2540 wrote to memory of 4048	2540	2025-02-02_a7c716f5d936c9276944313d870ed67e_mafia.exe	88
PID 2540 wrote to memory of 4048	2540	2025-02-02_a7c716f5d936c9276944313d870ed67e_mafia.exe	88
PID 2540 wrote to memory of 3856	2540	2025-02-02_a7c716f5d936c9276944313d870ed67e_mafia.exe	90
PID 2540 wrote to memory of 3856	2540	2025-02-02_a7c716f5d936c9276944313d870ed67e_mafia.exe	90
PID 2540 wrote to memory of 3856	2540	2025-02-02_a7c716f5d936c9276944313d870ed67e_mafia.exe	90
PID 2540 wrote to memory of 4484	2540	2025-02-02_a7c716f5d936c9276944313d870ed67e_mafia.exe	92
PID 2540 wrote to memory of 4484	2540	2025-02-02_a7c716f5d936c9276944313d870ed67e_mafia.exe	92
PID 2540 wrote to memory of 4484	2540	2025-02-02_a7c716f5d936c9276944313d870ed67e_mafia.exe	92
PID 2540 wrote to memory of 2740	2540	2025-02-02_a7c716f5d936c9276944313d870ed67e_mafia.exe	94
PID 2540 wrote to memory of 2740	2540	2025-02-02_a7c716f5d936c9276944313d870ed67e_mafia.exe	94
PID 2540 wrote to memory of 2740	2540	2025-02-02_a7c716f5d936c9276944313d870ed67e_mafia.exe	94
PID 2540 wrote to memory of 4124	2540	2025-02-02_a7c716f5d936c9276944313d870ed67e_mafia.exe	97
PID 2540 wrote to memory of 4124	2540	2025-02-02_a7c716f5d936c9276944313d870ed67e_mafia.exe	97
PID 2540 wrote to memory of 4124	2540	2025-02-02_a7c716f5d936c9276944313d870ed67e_mafia.exe	97
PID 4444 wrote to memory of 2796	4444	gaarclce.exe	102
PID 4444 wrote to memory of 2796	4444	gaarclce.exe	102
PID 4444 wrote to memory of 2796	4444	gaarclce.exe	102
PID 4444 wrote to memory of 2796	4444	gaarclce.exe	102
PID 4444 wrote to memory of 2796	4444	gaarclce.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-02-02_a7c716f5d936c9276944313d870ed67e_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-02_a7c716f5d936c9276944313d870ed67e_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2540
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zxclrleq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4324
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gaarclce.exe" C:\Windows\SysWOW64\zxclrleq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4048
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create zxclrleq binPath= "C:\Windows\SysWOW64\zxclrleq\gaarclce.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-02_a7c716f5d936c9276944313d870ed67e_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3856
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description zxclrleq "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4484
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start zxclrleq
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2740
- 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:4124
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2540 -s 1040
  2⤵
  - Program crash
  PID:3716

C:\Windows\SysWOW64\zxclrleq\gaarclce.exe
C:\Windows\SysWOW64\zxclrleq\gaarclce.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-02_a7c716f5d936c9276944313d870ed67e_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4444
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2796
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4444 -s 528
  2⤵
  - Program crash
  PID:3580

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2540 -ip 2540
1⤵
PID:3132

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4444 -ip 4444
1⤵
PID:2712

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\gaarclce.exe

Filesize
11.9MB

MD5
f3abc6fc8c7378e6a917cced97b89c41

SHA1
6930203fa5a364358cf7a5930b8b64532ddad7e6

SHA256
172c06bc95a7dc4cf4fdd0a96d86acac5b0bb6d56793cd420e50fdc099461604

SHA512
e40c1512634cc33db7556f4b67c997ecff4ed64245c7b5937470f46c5de761b76f4abb9db581e875181f31a4a8aa02983c3bfcd373a91974208667df54730a68

Download Submit
memory/2540-8-0x0000000000580000-0x0000000000593000-memory.dmp

Filesize
76KB

Download
memory/2540-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2540-2-0x0000000000580000-0x0000000000593000-memory.dmp

Filesize
76KB

Download
memory/2540-7-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2540-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2540-1-0x00000000005B0000-0x00000000006B0000-memory.dmp

Filesize
1024KB

Download
memory/2796-14-0x0000000000F00000-0x0000000000F15000-memory.dmp

Filesize
84KB

Download
memory/2796-16-0x0000000000F00000-0x0000000000F15000-memory.dmp

Filesize
84KB

Download
memory/2796-17-0x0000000000F00000-0x0000000000F15000-memory.dmp

Filesize
84KB

Download
memory/4444-11-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4444-12-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4444-13-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4444-18-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads