tofsee | 4bf62ba46395dc870ed3ec3ed2c0ec4589ceb8cd9d07bc002baa9f3b196f20ab

General

Target

2025-01-31_38e7992204b4ed4f58fe205bb8da7f3f_mafia.exe
Size

11.0MB
MD5

38e7992204b4ed4f58fe205bb8da7f3f
SHA1

9f84dae5021806ea9b1cbbe70b485d140b47201f
SHA256

4bf62ba46395dc870ed3ec3ed2c0ec4589ceb8cd9d07bc002baa9f3b196f20ab
SHA512

5696c9c8aea89bd4a23bce623dbaceb31796bda3a4095443ef245c8b508e1b371f2dfe37b7e50f13e82473ae4755d1008e7ab8e340945eba95178e9206a5804d
SSDEEP

3072:sLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:JOMdRQr7OB0ypmMXnl8XEPM3noSWOC

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
900	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\tfocqxlk\ImagePath = "C:\\Windows\\SysWOW64\\tfocqxlk\\tbquhfoo.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-1-5-21-805940606-1861219160-370298170-1000\Control Panel\International\Geo\Nation	2025-01-31_38e7992204b4ed4f58fe205bb8da7f3f_mafia.exe

Deletes itself 1 IoCs

pid	Process
640	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4952	tbquhfoo.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4952 set thread context of 640	4952	tbquhfoo.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
1456	sc.exe
2388	sc.exe
4104	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
3264	5096	WerFault.exe	82
3528	4952	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	2025-01-31_38e7992204b4ed4f58fe205bb8da7f3f_mafia.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tbquhfoo.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 5096 wrote to memory of 2020	5096	2025-01-31_38e7992204b4ed4f58fe205bb8da7f3f_mafia.exe	86
PID 5096 wrote to memory of 2020	5096	2025-01-31_38e7992204b4ed4f58fe205bb8da7f3f_mafia.exe	86
PID 5096 wrote to memory of 2020	5096	2025-01-31_38e7992204b4ed4f58fe205bb8da7f3f_mafia.exe	86
PID 5096 wrote to memory of 4540	5096	2025-01-31_38e7992204b4ed4f58fe205bb8da7f3f_mafia.exe	88
PID 5096 wrote to memory of 4540	5096	2025-01-31_38e7992204b4ed4f58fe205bb8da7f3f_mafia.exe	88
PID 5096 wrote to memory of 4540	5096	2025-01-31_38e7992204b4ed4f58fe205bb8da7f3f_mafia.exe	88
PID 5096 wrote to memory of 1456	5096	2025-01-31_38e7992204b4ed4f58fe205bb8da7f3f_mafia.exe	90
PID 5096 wrote to memory of 1456	5096	2025-01-31_38e7992204b4ed4f58fe205bb8da7f3f_mafia.exe	90
PID 5096 wrote to memory of 1456	5096	2025-01-31_38e7992204b4ed4f58fe205bb8da7f3f_mafia.exe	90
PID 5096 wrote to memory of 2388	5096	2025-01-31_38e7992204b4ed4f58fe205bb8da7f3f_mafia.exe	92
PID 5096 wrote to memory of 2388	5096	2025-01-31_38e7992204b4ed4f58fe205bb8da7f3f_mafia.exe	92
PID 5096 wrote to memory of 2388	5096	2025-01-31_38e7992204b4ed4f58fe205bb8da7f3f_mafia.exe	92
PID 5096 wrote to memory of 4104	5096	2025-01-31_38e7992204b4ed4f58fe205bb8da7f3f_mafia.exe	94
PID 5096 wrote to memory of 4104	5096	2025-01-31_38e7992204b4ed4f58fe205bb8da7f3f_mafia.exe	94
PID 5096 wrote to memory of 4104	5096	2025-01-31_38e7992204b4ed4f58fe205bb8da7f3f_mafia.exe	94
PID 5096 wrote to memory of 900	5096	2025-01-31_38e7992204b4ed4f58fe205bb8da7f3f_mafia.exe	97
PID 5096 wrote to memory of 900	5096	2025-01-31_38e7992204b4ed4f58fe205bb8da7f3f_mafia.exe	97
PID 5096 wrote to memory of 900	5096	2025-01-31_38e7992204b4ed4f58fe205bb8da7f3f_mafia.exe	97
PID 4952 wrote to memory of 640	4952	tbquhfoo.exe	102
PID 4952 wrote to memory of 640	4952	tbquhfoo.exe	102
PID 4952 wrote to memory of 640	4952	tbquhfoo.exe	102
PID 4952 wrote to memory of 640	4952	tbquhfoo.exe	102
PID 4952 wrote to memory of 640	4952	tbquhfoo.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-01-31_38e7992204b4ed4f58fe205bb8da7f3f_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-31_38e7992204b4ed4f58fe205bb8da7f3f_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5096
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tfocqxlk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2020
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tbquhfoo.exe" C:\Windows\SysWOW64\tfocqxlk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4540
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create tfocqxlk binPath= "C:\Windows\SysWOW64\tfocqxlk\tbquhfoo.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-31_38e7992204b4ed4f58fe205bb8da7f3f_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1456
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description tfocqxlk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2388
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start tfocqxlk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4104
- 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:900
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5096 -s 1340
  2⤵
  - Program crash
  PID:3264

C:\Windows\SysWOW64\tfocqxlk\tbquhfoo.exe
C:\Windows\SysWOW64\tfocqxlk\tbquhfoo.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-31_38e7992204b4ed4f58fe205bb8da7f3f_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4952
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:640
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4952 -s 512
  2⤵
  - Program crash
  PID:3528

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 5096 -ip 5096
1⤵
PID:1784

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 4952 -ip 4952
1⤵
PID:1432

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\tbquhfoo.exe

Filesize
11.1MB

MD5
ff2b5cf63ed98453da0d6e2165dd25f0

SHA1
691581c096c31b2eef6fcd0f5b54d8be6388b1cd

SHA256
6e7f5102a275cfd584ab402f0f0ecf000418b60ec9b81056141bd05dafdf92d9

SHA512
f923daaf46ccdffcd3698bf37297f2c7d3ede2ebfe6cb918af96dc68094f775c46e42d519d31c9c7a5c99c13a07f8633e14922ead93116502321540db0d42a65

Download Submit
memory/640-14-0x0000000000280000-0x0000000000295000-memory.dmp

Filesize
84KB

Download
memory/640-17-0x0000000000280000-0x0000000000295000-memory.dmp

Filesize
84KB

Download
memory/640-16-0x0000000000280000-0x0000000000295000-memory.dmp

Filesize
84KB

Download
memory/4952-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4952-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4952-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4952-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/5096-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5096-8-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/5096-1-0x0000000000610000-0x0000000000710000-memory.dmp

Filesize
1024KB

Download
memory/5096-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/5096-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5096-2-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads