tofsee | 55a8d96b35183d73004d67690ddf5f91a29b044b1ad4669afa6e0fd16198775a

General

Target

2025-02-03_0d14ff3fe3c0ea2c9fc194e8364499bc_mafia.exe
Size

10.7MB
MD5

0d14ff3fe3c0ea2c9fc194e8364499bc
SHA1

e9288930dff1c6f786aaf1797937caf4b31ce455
SHA256

55a8d96b35183d73004d67690ddf5f91a29b044b1ad4669afa6e0fd16198775a
SHA512

7a71ba516df0ec64384620049ddd05896707c3ec5a18bf0f82e5d15db2a916e0166fc122c3386b0025c4191c092c68da3999c27b84e8655b22c4f4dd7af4807e
SSDEEP

6144:zLQ1p/2p5e+D2jFHO+iZoy6u9FlfrXEz9NQNQNQNQNQNQNQNQNQNQNQNQNQNQNQF:ITYe+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
2808	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\abmstfkn\ImagePath = "C:\\Windows\\SysWOW64\\abmstfkn\\cflfufqw.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-1-5-21-1121399784-3202166597-3503557106-1000\Control Panel\International\Geo\Nation	2025-02-03_0d14ff3fe3c0ea2c9fc194e8364499bc_mafia.exe

Deletes itself 1 IoCs

pid	Process
1576	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4012	cflfufqw.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4012 set thread context of 1576	4012	cflfufqw.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
2516	sc.exe
1860	sc.exe
1452	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
744	4012	WerFault.exe	99
548	3648	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	cmd.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	2025-02-03_0d14ff3fe3c0ea2c9fc194e8364499bc_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cflfufqw.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3648 wrote to memory of 4900	3648	2025-02-03_0d14ff3fe3c0ea2c9fc194e8364499bc_mafia.exe	87
PID 3648 wrote to memory of 4900	3648	2025-02-03_0d14ff3fe3c0ea2c9fc194e8364499bc_mafia.exe	87
PID 3648 wrote to memory of 4900	3648	2025-02-03_0d14ff3fe3c0ea2c9fc194e8364499bc_mafia.exe	87
PID 3648 wrote to memory of 3564	3648	2025-02-03_0d14ff3fe3c0ea2c9fc194e8364499bc_mafia.exe	89
PID 3648 wrote to memory of 3564	3648	2025-02-03_0d14ff3fe3c0ea2c9fc194e8364499bc_mafia.exe	89
PID 3648 wrote to memory of 3564	3648	2025-02-03_0d14ff3fe3c0ea2c9fc194e8364499bc_mafia.exe	89
PID 3648 wrote to memory of 1452	3648	2025-02-03_0d14ff3fe3c0ea2c9fc194e8364499bc_mafia.exe	92
PID 3648 wrote to memory of 1452	3648	2025-02-03_0d14ff3fe3c0ea2c9fc194e8364499bc_mafia.exe	92
PID 3648 wrote to memory of 1452	3648	2025-02-03_0d14ff3fe3c0ea2c9fc194e8364499bc_mafia.exe	92
PID 3648 wrote to memory of 2516	3648	2025-02-03_0d14ff3fe3c0ea2c9fc194e8364499bc_mafia.exe	95
PID 3648 wrote to memory of 2516	3648	2025-02-03_0d14ff3fe3c0ea2c9fc194e8364499bc_mafia.exe	95
PID 3648 wrote to memory of 2516	3648	2025-02-03_0d14ff3fe3c0ea2c9fc194e8364499bc_mafia.exe	95
PID 3648 wrote to memory of 1860	3648	2025-02-03_0d14ff3fe3c0ea2c9fc194e8364499bc_mafia.exe	97
PID 3648 wrote to memory of 1860	3648	2025-02-03_0d14ff3fe3c0ea2c9fc194e8364499bc_mafia.exe	97
PID 3648 wrote to memory of 1860	3648	2025-02-03_0d14ff3fe3c0ea2c9fc194e8364499bc_mafia.exe	97
PID 3648 wrote to memory of 2808	3648	2025-02-03_0d14ff3fe3c0ea2c9fc194e8364499bc_mafia.exe	100
PID 3648 wrote to memory of 2808	3648	2025-02-03_0d14ff3fe3c0ea2c9fc194e8364499bc_mafia.exe	100
PID 3648 wrote to memory of 2808	3648	2025-02-03_0d14ff3fe3c0ea2c9fc194e8364499bc_mafia.exe	100
PID 4012 wrote to memory of 1576	4012	cflfufqw.exe	103
PID 4012 wrote to memory of 1576	4012	cflfufqw.exe	103
PID 4012 wrote to memory of 1576	4012	cflfufqw.exe	103
PID 4012 wrote to memory of 1576	4012	cflfufqw.exe	103
PID 4012 wrote to memory of 1576	4012	cflfufqw.exe	103

C:\Users\Admin\AppData\Local\Temp\2025-02-03_0d14ff3fe3c0ea2c9fc194e8364499bc_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-03_0d14ff3fe3c0ea2c9fc194e8364499bc_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3648
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\abmstfkn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4900
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cflfufqw.exe" C:\Windows\SysWOW64\abmstfkn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3564
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create abmstfkn binPath= "C:\Windows\SysWOW64\abmstfkn\cflfufqw.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-03_0d14ff3fe3c0ea2c9fc194e8364499bc_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1452
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description abmstfkn "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2516
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start abmstfkn
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1860
- 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:2808
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3648 -s 1044
  2⤵
  - Program crash
  PID:548

C:\Windows\SysWOW64\abmstfkn\cflfufqw.exe
C:\Windows\SysWOW64\abmstfkn\cflfufqw.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-03_0d14ff3fe3c0ea2c9fc194e8364499bc_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4012
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1576
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4012 -s 516
  2⤵
  - Program crash
  PID:744

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3648 -ip 3648
1⤵
PID:3340

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4012 -ip 4012
1⤵
PID:3944

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\cflfufqw.exe

Filesize
14.5MB

MD5
37a8f425225752425a50cd4dd3d2c0cf

SHA1
9419c7f3b9ab5f01be871a0c9dda406aa3c0484a

SHA256
344ba7d8bace8e48d2782867a8e62ca6bb48652b57d76cf446174f794c7b037f

SHA512
e7d015c19dc4340e1a9fb8133e3e2340bdabe4563d5226add2ffed0b33094471e3994806a83437bf7a81bf119a78e8dc2be518dc69a21234a0535e1fcf46db4e

Download Submit
memory/1576-12-0x0000000000D90000-0x0000000000DA5000-memory.dmp

Filesize
84KB

Download
memory/1576-9-0x0000000000D90000-0x0000000000DA5000-memory.dmp

Filesize
84KB

Download
memory/1576-18-0x0000000000D90000-0x0000000000DA5000-memory.dmp

Filesize
84KB

Download
memory/1576-19-0x0000000000D90000-0x0000000000DA5000-memory.dmp

Filesize
84KB

Download
memory/1576-20-0x0000000000D90000-0x0000000000DA5000-memory.dmp

Filesize
84KB

Download
memory/3648-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3648-2-0x0000000000510000-0x0000000000523000-memory.dmp

Filesize
76KB

Download
memory/3648-1-0x00000000005D0000-0x00000000006D0000-memory.dmp

Filesize
1024KB

Download
memory/3648-15-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/3648-17-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3648-16-0x0000000000510000-0x0000000000523000-memory.dmp

Filesize
76KB

Download
memory/4012-8-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/4012-14-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads