tofsee | 5872b45919be05e0cbfcc6937b2b61995edb68686cf32fe7fd10a961f1ec0506

General

Target

2025-02-01_1a047daff0e921593e326997912f54c3_mafia.exe
Size

14.5MB
MD5

1a047daff0e921593e326997912f54c3
SHA1

dafe70cbcda2cf2ac5604b2012e35736e71d50c3
SHA256

5872b45919be05e0cbfcc6937b2b61995edb68686cf32fe7fd10a961f1ec0506
SHA512

0a6acb0e0bcda3a340791b6cadbdb02a5b8019b5f104ab424dcb61054969ba11ee7b88d1f450062065c2e21f08919b6a703c57b1ba9ba1ce305db9dda14d6dd3
SSDEEP

393216:8XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX3:

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
2304	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\fuauzjyd\ImagePath = "C:\\Windows\\SysWOW64\\fuauzjyd\\pcolerwg.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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	2025-02-01_1a047daff0e921593e326997912f54c3_mafia.exe

Deletes itself 1 IoCs

pid	Process
4996	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1712	pcolerwg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1712 set thread context of 4996	1712	pcolerwg.exe	93

Launches sc.exe 3 IoCs

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

pid	Process
2844	sc.exe
4060	sc.exe
2452	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

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	2025-02-01_1a047daff0e921593e326997912f54c3_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	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	pcolerwg.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4204 wrote to memory of 1988	4204	2025-02-01_1a047daff0e921593e326997912f54c3_mafia.exe	82
PID 4204 wrote to memory of 1988	4204	2025-02-01_1a047daff0e921593e326997912f54c3_mafia.exe	82
PID 4204 wrote to memory of 1988	4204	2025-02-01_1a047daff0e921593e326997912f54c3_mafia.exe	82
PID 4204 wrote to memory of 3652	4204	2025-02-01_1a047daff0e921593e326997912f54c3_mafia.exe	84
PID 4204 wrote to memory of 3652	4204	2025-02-01_1a047daff0e921593e326997912f54c3_mafia.exe	84
PID 4204 wrote to memory of 3652	4204	2025-02-01_1a047daff0e921593e326997912f54c3_mafia.exe	84
PID 4204 wrote to memory of 2844	4204	2025-02-01_1a047daff0e921593e326997912f54c3_mafia.exe	86
PID 4204 wrote to memory of 2844	4204	2025-02-01_1a047daff0e921593e326997912f54c3_mafia.exe	86
PID 4204 wrote to memory of 2844	4204	2025-02-01_1a047daff0e921593e326997912f54c3_mafia.exe	86
PID 4204 wrote to memory of 4060	4204	2025-02-01_1a047daff0e921593e326997912f54c3_mafia.exe	88
PID 4204 wrote to memory of 4060	4204	2025-02-01_1a047daff0e921593e326997912f54c3_mafia.exe	88
PID 4204 wrote to memory of 4060	4204	2025-02-01_1a047daff0e921593e326997912f54c3_mafia.exe	88
PID 4204 wrote to memory of 2452	4204	2025-02-01_1a047daff0e921593e326997912f54c3_mafia.exe	90
PID 4204 wrote to memory of 2452	4204	2025-02-01_1a047daff0e921593e326997912f54c3_mafia.exe	90
PID 4204 wrote to memory of 2452	4204	2025-02-01_1a047daff0e921593e326997912f54c3_mafia.exe	90
PID 1712 wrote to memory of 4996	1712	pcolerwg.exe	93
PID 1712 wrote to memory of 4996	1712	pcolerwg.exe	93
PID 1712 wrote to memory of 4996	1712	pcolerwg.exe	93
PID 1712 wrote to memory of 4996	1712	pcolerwg.exe	93
PID 1712 wrote to memory of 4996	1712	pcolerwg.exe	93
PID 4204 wrote to memory of 2304	4204	2025-02-01_1a047daff0e921593e326997912f54c3_mafia.exe	94
PID 4204 wrote to memory of 2304	4204	2025-02-01_1a047daff0e921593e326997912f54c3_mafia.exe	94
PID 4204 wrote to memory of 2304	4204	2025-02-01_1a047daff0e921593e326997912f54c3_mafia.exe	94

C:\Users\Admin\AppData\Local\Temp\2025-02-01_1a047daff0e921593e326997912f54c3_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_1a047daff0e921593e326997912f54c3_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4204
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fuauzjyd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1988
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pcolerwg.exe" C:\Windows\SysWOW64\fuauzjyd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3652
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fuauzjyd binPath= "C:\Windows\SysWOW64\fuauzjyd\pcolerwg.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_1a047daff0e921593e326997912f54c3_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2844
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fuauzjyd "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4060
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fuauzjyd
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2452
- 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:2304

C:\Windows\SysWOW64\fuauzjyd\pcolerwg.exe
C:\Windows\SysWOW64\fuauzjyd\pcolerwg.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_1a047daff0e921593e326997912f54c3_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1712
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4996

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\pcolerwg.exe

Filesize
14.0MB

MD5
f48daf291ea87dc02b85df0ebe171d5d

SHA1
9060dc98577b7d74d5329218b610e8a102d92661

SHA256
ede93d56daebfcf323e61a2251b7feec84ba071ebf03cf6fe182b0b1af3da05f

SHA512
f9118ae414585966b9ca07fe7be5cd0834d2a3127b96466d39592248a8e3faeda24bd8992a57bcc8497753795676a833f005d7275adc2b52c42d33a25b4f6507

Download Submit
memory/1712-16-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/1712-8-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/1712-10-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/1712-9-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4204-19-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4204-2-0x00000000001E0000-0x00000000001F3000-memory.dmp

Filesize
76KB

Download
memory/4204-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4204-18-0x00000000001E0000-0x00000000001F3000-memory.dmp

Filesize
76KB

Download
memory/4204-1-0x0000000000650000-0x0000000000750000-memory.dmp

Filesize
1024KB

Download
memory/4204-17-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4996-14-0x0000000001000000-0x0000000001015000-memory.dmp

Filesize
84KB

Download
memory/4996-11-0x0000000001000000-0x0000000001015000-memory.dmp

Filesize
84KB

Download
memory/4996-20-0x0000000001000000-0x0000000001015000-memory.dmp

Filesize
84KB

Download
memory/4996-21-0x0000000001000000-0x0000000001015000-memory.dmp

Filesize
84KB

Download
memory/4996-22-0x0000000001000000-0x0000000001015000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads