tofsee | 34a44b3c1fe0d03bab32a58e994ce71b84e312911cf22704b94bd6e9dcea01ad

General

Target

2025-02-01_84d420f021fcac98773615ee5ef02e16_mafia.exe
Size

10.4MB
MD5

84d420f021fcac98773615ee5ef02e16
SHA1

6026658871dfc560b5c8f4e63df9bd143a9e3148
SHA256

34a44b3c1fe0d03bab32a58e994ce71b84e312911cf22704b94bd6e9dcea01ad
SHA512

ba03146887876314d068ec2592a396f019e14ebaa173624b539e6daa38d462e5534f96dcacdd9920600733f0cf0ee3eff6149be38061af0d7b30c29f34d5728e
SSDEEP

196608:AyXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX3:VXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXH

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
3700	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\nsqesqtb\ImagePath = "C:\\Windows\\SysWOW64\\nsqesqtb\\bsayidky.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	2025-02-01_84d420f021fcac98773615ee5ef02e16_mafia.exe

Deletes itself 1 IoCs

pid	Process
2336	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4740	bsayidky.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4740 set thread context of 2336	4740	bsayidky.exe	97

Launches sc.exe 3 IoCs

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

pid	Process
2788	sc.exe
1600	sc.exe
4140	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

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	bsayidky.exe
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	2025-02-01_84d420f021fcac98773615ee5ef02e16_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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2268 wrote to memory of 2592	2268	2025-02-01_84d420f021fcac98773615ee5ef02e16_mafia.exe	86
PID 2268 wrote to memory of 2592	2268	2025-02-01_84d420f021fcac98773615ee5ef02e16_mafia.exe	86
PID 2268 wrote to memory of 2592	2268	2025-02-01_84d420f021fcac98773615ee5ef02e16_mafia.exe	86
PID 2268 wrote to memory of 2920	2268	2025-02-01_84d420f021fcac98773615ee5ef02e16_mafia.exe	88
PID 2268 wrote to memory of 2920	2268	2025-02-01_84d420f021fcac98773615ee5ef02e16_mafia.exe	88
PID 2268 wrote to memory of 2920	2268	2025-02-01_84d420f021fcac98773615ee5ef02e16_mafia.exe	88
PID 2268 wrote to memory of 2788	2268	2025-02-01_84d420f021fcac98773615ee5ef02e16_mafia.exe	90
PID 2268 wrote to memory of 2788	2268	2025-02-01_84d420f021fcac98773615ee5ef02e16_mafia.exe	90
PID 2268 wrote to memory of 2788	2268	2025-02-01_84d420f021fcac98773615ee5ef02e16_mafia.exe	90
PID 2268 wrote to memory of 1600	2268	2025-02-01_84d420f021fcac98773615ee5ef02e16_mafia.exe	92
PID 2268 wrote to memory of 1600	2268	2025-02-01_84d420f021fcac98773615ee5ef02e16_mafia.exe	92
PID 2268 wrote to memory of 1600	2268	2025-02-01_84d420f021fcac98773615ee5ef02e16_mafia.exe	92
PID 2268 wrote to memory of 4140	2268	2025-02-01_84d420f021fcac98773615ee5ef02e16_mafia.exe	94
PID 2268 wrote to memory of 4140	2268	2025-02-01_84d420f021fcac98773615ee5ef02e16_mafia.exe	94
PID 2268 wrote to memory of 4140	2268	2025-02-01_84d420f021fcac98773615ee5ef02e16_mafia.exe	94
PID 4740 wrote to memory of 2336	4740	bsayidky.exe	97
PID 4740 wrote to memory of 2336	4740	bsayidky.exe	97
PID 4740 wrote to memory of 2336	4740	bsayidky.exe	97
PID 4740 wrote to memory of 2336	4740	bsayidky.exe	97
PID 4740 wrote to memory of 2336	4740	bsayidky.exe	97
PID 2268 wrote to memory of 3700	2268	2025-02-01_84d420f021fcac98773615ee5ef02e16_mafia.exe	98
PID 2268 wrote to memory of 3700	2268	2025-02-01_84d420f021fcac98773615ee5ef02e16_mafia.exe	98
PID 2268 wrote to memory of 3700	2268	2025-02-01_84d420f021fcac98773615ee5ef02e16_mafia.exe	98

C:\Users\Admin\AppData\Local\Temp\2025-02-01_84d420f021fcac98773615ee5ef02e16_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_84d420f021fcac98773615ee5ef02e16_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2268
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nsqesqtb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2592
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bsayidky.exe" C:\Windows\SysWOW64\nsqesqtb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2920
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nsqesqtb binPath= "C:\Windows\SysWOW64\nsqesqtb\bsayidky.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_84d420f021fcac98773615ee5ef02e16_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2788
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nsqesqtb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1600
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nsqesqtb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4140
- 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:3700

C:\Windows\SysWOW64\nsqesqtb\bsayidky.exe
C:\Windows\SysWOW64\nsqesqtb\bsayidky.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_84d420f021fcac98773615ee5ef02e16_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4740
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2336

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\bsayidky.exe

Filesize
10.0MB

MD5
f727ae6d0fdf87c44fe430625a1e4c94

SHA1
9d86862a4753a701d30345de677b78c7d1c242c2

SHA256
054998d8a83c4adce209441b11a9bfa78f306d3aaa13e1c27f16e726d3b0fe0c

SHA512
abcac99baa15ecea0b052b961c914683ac9f2d6e208463660df086b9d45dd1eb30cf8419d6fb07eca7e550db8448141d99a2d73b10f86ad24b8770a5b42d32ca

Download Submit
memory/2268-18-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2268-2-0x0000000000570000-0x0000000000583000-memory.dmp

Filesize
76KB

Download
memory/2268-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2268-1-0x00000000006F0000-0x00000000007F0000-memory.dmp

Filesize
1024KB

Download
memory/2268-17-0x0000000000570000-0x0000000000583000-memory.dmp

Filesize
76KB

Download
memory/2268-16-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2336-19-0x0000000000C40000-0x0000000000C55000-memory.dmp

Filesize
84KB

Download
memory/2336-21-0x0000000000C40000-0x0000000000C55000-memory.dmp

Filesize
84KB

Download
memory/2336-10-0x0000000000C40000-0x0000000000C55000-memory.dmp

Filesize
84KB

Download
memory/2336-13-0x0000000000C40000-0x0000000000C55000-memory.dmp

Filesize
84KB

Download
memory/2336-20-0x0000000000C40000-0x0000000000C55000-memory.dmp

Filesize
84KB

Download
memory/4740-9-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4740-15-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4740-8-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads