tofsee | 9b7c1f5476a36a29a7f81df68c5aeea0782382ac62ee693c193a00339b79fedd

General

Target

2025-01-29_b4abb9b0e7781757b18e88bb6af706f8_mafia.exe
Size

11.8MB
MD5

b4abb9b0e7781757b18e88bb6af706f8
SHA1

339f0b399c0a05a0c3c18c6745a0208bfffc0728
SHA256

9b7c1f5476a36a29a7f81df68c5aeea0782382ac62ee693c193a00339b79fedd
SHA512

b1eb49b3fbeda25640084a8bb01961b39fc5e883ad2b0006ee7345f37e725fdb4e4031c09cf1643fd79032dd2af6790eb40cea4ead49092d8128e1f40a6a367d
SSDEEP

196608:GyXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX3:rXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXH

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
220	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\mwkmjujf\ImagePath = "C:\\Windows\\SysWOW64\\mwkmjujf\\rnffcrqe.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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	2025-01-29_b4abb9b0e7781757b18e88bb6af706f8_mafia.exe

Deletes itself 1 IoCs

pid	Process
2896	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2024	rnffcrqe.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2024 set thread context of 2896	2024	rnffcrqe.exe	93

Launches sc.exe 3 IoCs

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

pid	Process
836	sc.exe
3636	sc.exe
3020	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-29_b4abb9b0e7781757b18e88bb6af706f8_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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rnffcrqe.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 5060 wrote to memory of 3600	5060	2025-01-29_b4abb9b0e7781757b18e88bb6af706f8_mafia.exe	82
PID 5060 wrote to memory of 3600	5060	2025-01-29_b4abb9b0e7781757b18e88bb6af706f8_mafia.exe	82
PID 5060 wrote to memory of 3600	5060	2025-01-29_b4abb9b0e7781757b18e88bb6af706f8_mafia.exe	82
PID 5060 wrote to memory of 1336	5060	2025-01-29_b4abb9b0e7781757b18e88bb6af706f8_mafia.exe	84
PID 5060 wrote to memory of 1336	5060	2025-01-29_b4abb9b0e7781757b18e88bb6af706f8_mafia.exe	84
PID 5060 wrote to memory of 1336	5060	2025-01-29_b4abb9b0e7781757b18e88bb6af706f8_mafia.exe	84
PID 5060 wrote to memory of 836	5060	2025-01-29_b4abb9b0e7781757b18e88bb6af706f8_mafia.exe	86
PID 5060 wrote to memory of 836	5060	2025-01-29_b4abb9b0e7781757b18e88bb6af706f8_mafia.exe	86
PID 5060 wrote to memory of 836	5060	2025-01-29_b4abb9b0e7781757b18e88bb6af706f8_mafia.exe	86
PID 5060 wrote to memory of 3636	5060	2025-01-29_b4abb9b0e7781757b18e88bb6af706f8_mafia.exe	88
PID 5060 wrote to memory of 3636	5060	2025-01-29_b4abb9b0e7781757b18e88bb6af706f8_mafia.exe	88
PID 5060 wrote to memory of 3636	5060	2025-01-29_b4abb9b0e7781757b18e88bb6af706f8_mafia.exe	88
PID 5060 wrote to memory of 3020	5060	2025-01-29_b4abb9b0e7781757b18e88bb6af706f8_mafia.exe	90
PID 5060 wrote to memory of 3020	5060	2025-01-29_b4abb9b0e7781757b18e88bb6af706f8_mafia.exe	90
PID 5060 wrote to memory of 3020	5060	2025-01-29_b4abb9b0e7781757b18e88bb6af706f8_mafia.exe	90
PID 2024 wrote to memory of 2896	2024	rnffcrqe.exe	93
PID 2024 wrote to memory of 2896	2024	rnffcrqe.exe	93
PID 2024 wrote to memory of 2896	2024	rnffcrqe.exe	93
PID 2024 wrote to memory of 2896	2024	rnffcrqe.exe	93
PID 2024 wrote to memory of 2896	2024	rnffcrqe.exe	93
PID 5060 wrote to memory of 220	5060	2025-01-29_b4abb9b0e7781757b18e88bb6af706f8_mafia.exe	94
PID 5060 wrote to memory of 220	5060	2025-01-29_b4abb9b0e7781757b18e88bb6af706f8_mafia.exe	94
PID 5060 wrote to memory of 220	5060	2025-01-29_b4abb9b0e7781757b18e88bb6af706f8_mafia.exe	94

C:\Users\Admin\AppData\Local\Temp\2025-01-29_b4abb9b0e7781757b18e88bb6af706f8_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-29_b4abb9b0e7781757b18e88bb6af706f8_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5060
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mwkmjujf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3600
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rnffcrqe.exe" C:\Windows\SysWOW64\mwkmjujf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1336
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mwkmjujf binPath= "C:\Windows\SysWOW64\mwkmjujf\rnffcrqe.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-29_b4abb9b0e7781757b18e88bb6af706f8_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:836
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mwkmjujf "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3636
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mwkmjujf
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3020
- 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:220

C:\Windows\SysWOW64\mwkmjujf\rnffcrqe.exe
C:\Windows\SysWOW64\mwkmjujf\rnffcrqe.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-29_b4abb9b0e7781757b18e88bb6af706f8_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2024
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2896

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\rnffcrqe.exe

Filesize
12.5MB

MD5
cdf6691f9acb932affd7efbe0f87c67b

SHA1
6eef017fc547bf10e160edb2c353c8c38f7cb2f6

SHA256
c622452a6ef4332517517de6d958dc47b9f9a6fe902cac7ab04482ab94f00a18

SHA512
b94d846d568150a5b00156710ef62f3c7d05e31572114f89cb2d28dbd2337d6e37e1a556f778122d82e279b67c6c2738d9245d095af813147da30de3bb2690f5

Download Submit
memory/2024-14-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2024-10-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2024-8-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2024-9-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2896-16-0x0000000000AA0000-0x0000000000AB5000-memory.dmp

Filesize
84KB

Download
memory/2896-11-0x0000000000AA0000-0x0000000000AB5000-memory.dmp

Filesize
84KB

Download
memory/2896-21-0x0000000000AA0000-0x0000000000AB5000-memory.dmp

Filesize
84KB

Download
memory/2896-22-0x0000000000AA0000-0x0000000000AB5000-memory.dmp

Filesize
84KB

Download
memory/2896-23-0x0000000000AA0000-0x0000000000AB5000-memory.dmp

Filesize
84KB

Download
memory/5060-2-0x0000000000570000-0x0000000000583000-memory.dmp

Filesize
76KB

Download
memory/5060-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5060-17-0x0000000000690000-0x0000000000790000-memory.dmp

Filesize
1024KB

Download
memory/5060-1-0x0000000000690000-0x0000000000790000-memory.dmp

Filesize
1024KB

Download
memory/5060-18-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/5060-20-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5060-19-0x0000000000570000-0x0000000000583000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads