tofsee | 883cc9bf50bf97f0328766207a93f19f3bba89a18a4799414e483dd8356ceeac

General

Target

2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe
Size

12.2MB
MD5

7cf8ec2969bb20da7965ea75c471f824
SHA1

adffd7dbf8606465218beb8cec9062b142719f6b
SHA256

883cc9bf50bf97f0328766207a93f19f3bba89a18a4799414e483dd8356ceeac
SHA512

1dcc26bb097ef87713512bfab1ca4993b636e0d49a46150e199446aad168c7a3a7010298ebf8a541de0a18114a82f6ca254db82ba413cbbe075d2a8794039799
SSDEEP

393216:JXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXH:

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
2768	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\vperlrwk\ImagePath = "C:\\Windows\\SysWOW64\\vperlrwk\\kwvjuemg.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	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe

Deletes itself 1 IoCs

pid	Process
1644	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1184	kwvjuemg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1184 set thread context of 1644	1184	kwvjuemg.exe	93

Launches sc.exe 3 IoCs

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

pid	Process
1840	sc.exe
2904	sc.exe
4616	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\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	kwvjuemg.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3080 wrote to memory of 1032	3080	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	82
PID 3080 wrote to memory of 1032	3080	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	82
PID 3080 wrote to memory of 1032	3080	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	82
PID 3080 wrote to memory of 4716	3080	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	84
PID 3080 wrote to memory of 4716	3080	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	84
PID 3080 wrote to memory of 4716	3080	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	84
PID 3080 wrote to memory of 1840	3080	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	86
PID 3080 wrote to memory of 1840	3080	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	86
PID 3080 wrote to memory of 1840	3080	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	86
PID 3080 wrote to memory of 2904	3080	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	88
PID 3080 wrote to memory of 2904	3080	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	88
PID 3080 wrote to memory of 2904	3080	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	88
PID 3080 wrote to memory of 4616	3080	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	90
PID 3080 wrote to memory of 4616	3080	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	90
PID 3080 wrote to memory of 4616	3080	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	90
PID 1184 wrote to memory of 1644	1184	kwvjuemg.exe	93
PID 1184 wrote to memory of 1644	1184	kwvjuemg.exe	93
PID 1184 wrote to memory of 1644	1184	kwvjuemg.exe	93
PID 1184 wrote to memory of 1644	1184	kwvjuemg.exe	93
PID 1184 wrote to memory of 1644	1184	kwvjuemg.exe	93
PID 3080 wrote to memory of 2768	3080	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	94
PID 3080 wrote to memory of 2768	3080	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	94
PID 3080 wrote to memory of 2768	3080	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	94

C:\Users\Admin\AppData\Local\Temp\2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3080
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vperlrwk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1032
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kwvjuemg.exe" C:\Windows\SysWOW64\vperlrwk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4716
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create vperlrwk binPath= "C:\Windows\SysWOW64\vperlrwk\kwvjuemg.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1840
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description vperlrwk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2904
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start vperlrwk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4616
- 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:2768

C:\Windows\SysWOW64\vperlrwk\kwvjuemg.exe
C:\Windows\SysWOW64\vperlrwk\kwvjuemg.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1184
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1644

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\kwvjuemg.exe

Filesize
10.7MB

MD5
4c368de16a0e3d17a734cfbe9298cae9

SHA1
8666b6a691701221e542c0094f90dcd3f6d6dc77

SHA256
12e297feef42a7e586c7c05780f4274707b35cf6a2290b4b37394d6100d28546

SHA512
53efac46bc1e4b01d7ff0bf592239addbd55cf944d2ef9c9db3dc7f8b8f246a8f47fff18bd484e8a7e7ca020cae0918dca644f0dff6ab54fe57b310d8c87e014

Download Submit
memory/1184-8-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/1184-10-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/1184-12-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/1184-9-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/1644-15-0x0000000000950000-0x0000000000965000-memory.dmp

Filesize
84KB

Download
memory/1644-11-0x0000000000950000-0x0000000000965000-memory.dmp

Filesize
84KB

Download
memory/1644-19-0x0000000000950000-0x0000000000965000-memory.dmp

Filesize
84KB

Download
memory/1644-20-0x0000000000950000-0x0000000000965000-memory.dmp

Filesize
84KB

Download
memory/1644-21-0x0000000000950000-0x0000000000965000-memory.dmp

Filesize
84KB

Download
memory/3080-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3080-1-0x0000000000720000-0x0000000000820000-memory.dmp

Filesize
1024KB

Download
memory/3080-2-0x0000000000570000-0x0000000000583000-memory.dmp

Filesize
76KB

Download
memory/3080-18-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3080-16-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3080-17-0x0000000000570000-0x0000000000583000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads