tofsee | 628ccd4dbfe7d2d629dfa55028be82a83abc8708d0d21cd00609127dd719f49c

General

Target

2025-01-31_f93f3801be196209284d88bed8c0d70b_mafia.exe
Size

10.4MB
MD5

f93f3801be196209284d88bed8c0d70b
SHA1

21e4996492e96ac8741405f3a75af90a3cc9bc37
SHA256

628ccd4dbfe7d2d629dfa55028be82a83abc8708d0d21cd00609127dd719f49c
SHA512

102ec908e9622d1ea43a5b5fff4ccc1c5c9851ca30d538bdd1f644fea2ed8dcd1a4d8a284bbf55e2f59706476f5ad3640e7a4f58d49191e3d611dcd7ee3a767b
SSDEEP

6144:wLQ1p/2p5e+D2jFHO+iZoy6u9FlfrXEz9NQNQNQNQNQNQNQNQNQNQNQNQNQNQNQ1:lTYe+D2jFu+iZoUFhAz

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
3312	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\wfdzeng\ImagePath = "C:\\Windows\\SysWOW64\\wfdzeng\\bnmalvdx.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-1-5-21-1412605595-2147700071-3468511006-1000\Control Panel\International\Geo\Nation	2025-01-31_f93f3801be196209284d88bed8c0d70b_mafia.exe

Deletes itself 1 IoCs

pid	Process
4728	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3264	bnmalvdx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3264 set thread context of 4728	3264	bnmalvdx.exe	99

Launches sc.exe 3 IoCs

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

pid	Process
1992	sc.exe
2848	sc.exe
4636	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
3596	3264	WerFault.exe	96
3600	4172	WerFault.exe	82

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_f93f3801be196209284d88bed8c0d70b_mafia.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bnmalvdx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4172 wrote to memory of 3340	4172	2025-01-31_f93f3801be196209284d88bed8c0d70b_mafia.exe	86
PID 4172 wrote to memory of 3340	4172	2025-01-31_f93f3801be196209284d88bed8c0d70b_mafia.exe	86
PID 4172 wrote to memory of 3340	4172	2025-01-31_f93f3801be196209284d88bed8c0d70b_mafia.exe	86
PID 4172 wrote to memory of 2388	4172	2025-01-31_f93f3801be196209284d88bed8c0d70b_mafia.exe	88
PID 4172 wrote to memory of 2388	4172	2025-01-31_f93f3801be196209284d88bed8c0d70b_mafia.exe	88
PID 4172 wrote to memory of 2388	4172	2025-01-31_f93f3801be196209284d88bed8c0d70b_mafia.exe	88
PID 4172 wrote to memory of 4636	4172	2025-01-31_f93f3801be196209284d88bed8c0d70b_mafia.exe	90
PID 4172 wrote to memory of 4636	4172	2025-01-31_f93f3801be196209284d88bed8c0d70b_mafia.exe	90
PID 4172 wrote to memory of 4636	4172	2025-01-31_f93f3801be196209284d88bed8c0d70b_mafia.exe	90
PID 4172 wrote to memory of 1992	4172	2025-01-31_f93f3801be196209284d88bed8c0d70b_mafia.exe	92
PID 4172 wrote to memory of 1992	4172	2025-01-31_f93f3801be196209284d88bed8c0d70b_mafia.exe	92
PID 4172 wrote to memory of 1992	4172	2025-01-31_f93f3801be196209284d88bed8c0d70b_mafia.exe	92
PID 4172 wrote to memory of 2848	4172	2025-01-31_f93f3801be196209284d88bed8c0d70b_mafia.exe	94
PID 4172 wrote to memory of 2848	4172	2025-01-31_f93f3801be196209284d88bed8c0d70b_mafia.exe	94
PID 4172 wrote to memory of 2848	4172	2025-01-31_f93f3801be196209284d88bed8c0d70b_mafia.exe	94
PID 4172 wrote to memory of 3312	4172	2025-01-31_f93f3801be196209284d88bed8c0d70b_mafia.exe	97
PID 4172 wrote to memory of 3312	4172	2025-01-31_f93f3801be196209284d88bed8c0d70b_mafia.exe	97
PID 4172 wrote to memory of 3312	4172	2025-01-31_f93f3801be196209284d88bed8c0d70b_mafia.exe	97
PID 3264 wrote to memory of 4728	3264	bnmalvdx.exe	99
PID 3264 wrote to memory of 4728	3264	bnmalvdx.exe	99
PID 3264 wrote to memory of 4728	3264	bnmalvdx.exe	99
PID 3264 wrote to memory of 4728	3264	bnmalvdx.exe	99
PID 3264 wrote to memory of 4728	3264	bnmalvdx.exe	99

C:\Users\Admin\AppData\Local\Temp\2025-01-31_f93f3801be196209284d88bed8c0d70b_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-31_f93f3801be196209284d88bed8c0d70b_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4172
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wfdzeng\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3340
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bnmalvdx.exe" C:\Windows\SysWOW64\wfdzeng\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2388
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create wfdzeng binPath= "C:\Windows\SysWOW64\wfdzeng\bnmalvdx.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-31_f93f3801be196209284d88bed8c0d70b_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4636
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description wfdzeng "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1992
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start wfdzeng
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2848
- 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:3312
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4172 -s 1272
  2⤵
  - Program crash
  PID:3600

C:\Windows\SysWOW64\wfdzeng\bnmalvdx.exe
C:\Windows\SysWOW64\wfdzeng\bnmalvdx.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-31_f93f3801be196209284d88bed8c0d70b_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3264
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4728
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3264 -s 516
  2⤵
  - Program crash
  PID:3596

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 3264 -ip 3264
1⤵
PID:1000

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4172 -ip 4172
1⤵
PID:468

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
13.7MB

MD5
cf10793631bbd08b067dd3913b70a8c1

SHA1
410344594997de9680ed6ff20edba2e4e0533623

SHA256
032685ed0d53d610fecc3157da90edc34f4a0fdaf2a104d2a2f3ee5f32fab970

SHA512
dd023d9b2c62f529ddcfb652a0d181ade43ec71804a7da98b643615f5c83e879287ba96951ca4ea460bae55b2cdd1aa7b9a4af1e04b90d1be173f07c1b437200

Download Submit
memory/3264-8-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/3264-13-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/3264-19-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/3264-9-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/4172-15-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/4172-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4172-1-0x00000000005C0000-0x00000000006C0000-memory.dmp

Filesize
1024KB

Download
memory/4172-17-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4172-2-0x00000000005A0000-0x00000000005B3000-memory.dmp

Filesize
76KB

Download
memory/4172-16-0x00000000005A0000-0x00000000005B3000-memory.dmp

Filesize
76KB

Download
memory/4728-10-0x0000000000930000-0x0000000000945000-memory.dmp

Filesize
84KB

Download
memory/4728-14-0x0000000000930000-0x0000000000945000-memory.dmp

Filesize
84KB

Download
memory/4728-20-0x0000000000930000-0x0000000000945000-memory.dmp

Filesize
84KB

Download
memory/4728-21-0x0000000000930000-0x0000000000945000-memory.dmp

Filesize
84KB

Download
memory/4728-22-0x0000000000930000-0x0000000000945000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads