tofsee | f81c9417f0c21103d7dcf90a0d061944c5af2b3cb29f43e87d8649958ea84877

General

Target

2025-01-30_151f608fcbf07aad716fe5bc95e45766_mafia.exe
Size

12.5MB
MD5

151f608fcbf07aad716fe5bc95e45766
SHA1

4180eead80294e8ec941f2e364ee8cc3fdcac541
SHA256

f81c9417f0c21103d7dcf90a0d061944c5af2b3cb29f43e87d8649958ea84877
SHA512

5cee7d48bc720821b875daf04b7e0714ab223bd1bcf441b456c24ac459f5636a0e06d0b95edd4696e248851962255f5c081608e0c3261175d2439fd6e30df11b
SSDEEP

393216:RXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXb:h

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
232	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\zxmonvbt\ImagePath = "C:\\Windows\\SysWOW64\\zxmonvbt\\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	2025-01-30_151f608fcbf07aad716fe5bc95e45766_mafia.exe

Deletes itself 1 IoCs

pid	Process
404	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4744	rnffcrqe.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4744 set thread context of 404	4744	rnffcrqe.exe	93

Launches sc.exe 3 IoCs

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

pid	Process
4228	sc.exe
4884	sc.exe
3560	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	2025-01-30_151f608fcbf07aad716fe5bc95e45766_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	rnffcrqe.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	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 1376 wrote to memory of 5040	1376	2025-01-30_151f608fcbf07aad716fe5bc95e45766_mafia.exe	82
PID 1376 wrote to memory of 5040	1376	2025-01-30_151f608fcbf07aad716fe5bc95e45766_mafia.exe	82
PID 1376 wrote to memory of 5040	1376	2025-01-30_151f608fcbf07aad716fe5bc95e45766_mafia.exe	82
PID 1376 wrote to memory of 1676	1376	2025-01-30_151f608fcbf07aad716fe5bc95e45766_mafia.exe	84
PID 1376 wrote to memory of 1676	1376	2025-01-30_151f608fcbf07aad716fe5bc95e45766_mafia.exe	84
PID 1376 wrote to memory of 1676	1376	2025-01-30_151f608fcbf07aad716fe5bc95e45766_mafia.exe	84
PID 1376 wrote to memory of 4884	1376	2025-01-30_151f608fcbf07aad716fe5bc95e45766_mafia.exe	86
PID 1376 wrote to memory of 4884	1376	2025-01-30_151f608fcbf07aad716fe5bc95e45766_mafia.exe	86
PID 1376 wrote to memory of 4884	1376	2025-01-30_151f608fcbf07aad716fe5bc95e45766_mafia.exe	86
PID 1376 wrote to memory of 3560	1376	2025-01-30_151f608fcbf07aad716fe5bc95e45766_mafia.exe	88
PID 1376 wrote to memory of 3560	1376	2025-01-30_151f608fcbf07aad716fe5bc95e45766_mafia.exe	88
PID 1376 wrote to memory of 3560	1376	2025-01-30_151f608fcbf07aad716fe5bc95e45766_mafia.exe	88
PID 1376 wrote to memory of 4228	1376	2025-01-30_151f608fcbf07aad716fe5bc95e45766_mafia.exe	90
PID 1376 wrote to memory of 4228	1376	2025-01-30_151f608fcbf07aad716fe5bc95e45766_mafia.exe	90
PID 1376 wrote to memory of 4228	1376	2025-01-30_151f608fcbf07aad716fe5bc95e45766_mafia.exe	90
PID 4744 wrote to memory of 404	4744	rnffcrqe.exe	93
PID 4744 wrote to memory of 404	4744	rnffcrqe.exe	93
PID 4744 wrote to memory of 404	4744	rnffcrqe.exe	93
PID 4744 wrote to memory of 404	4744	rnffcrqe.exe	93
PID 4744 wrote to memory of 404	4744	rnffcrqe.exe	93
PID 1376 wrote to memory of 232	1376	2025-01-30_151f608fcbf07aad716fe5bc95e45766_mafia.exe	94
PID 1376 wrote to memory of 232	1376	2025-01-30_151f608fcbf07aad716fe5bc95e45766_mafia.exe	94
PID 1376 wrote to memory of 232	1376	2025-01-30_151f608fcbf07aad716fe5bc95e45766_mafia.exe	94

C:\Users\Admin\AppData\Local\Temp\2025-01-30_151f608fcbf07aad716fe5bc95e45766_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-30_151f608fcbf07aad716fe5bc95e45766_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1376
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zxmonvbt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5040
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rnffcrqe.exe" C:\Windows\SysWOW64\zxmonvbt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1676
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create zxmonvbt binPath= "C:\Windows\SysWOW64\zxmonvbt\rnffcrqe.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-30_151f608fcbf07aad716fe5bc95e45766_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4884
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description zxmonvbt "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3560
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start zxmonvbt
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4228
- 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:232

C:\Windows\SysWOW64\zxmonvbt\rnffcrqe.exe
C:\Windows\SysWOW64\zxmonvbt\rnffcrqe.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-30_151f608fcbf07aad716fe5bc95e45766_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4744
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:404

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
11.6MB

MD5
6c89823337e92bd9eccabee71f75702c

SHA1
c9ffbe0c5333b960b7bb45062965aa8766639f22

SHA256
92cdbe4552452625edb1e8e9c0ac8a85518894755b3fdbef4d850b14d7bf2d57

SHA512
16e9f7de64424512dbba616ee1ef82e5544ecf5f7729fa206c486c101f3017338c9a1eed5a4e6f8b2263bd624ae882a3969ed1f757df13a0cd16f97e96cc9072

Download Submit
memory/404-12-0x0000000001230000-0x0000000001245000-memory.dmp

Filesize
84KB

Download
memory/404-22-0x0000000001230000-0x0000000001245000-memory.dmp

Filesize
84KB

Download
memory/404-21-0x0000000001230000-0x0000000001245000-memory.dmp

Filesize
84KB

Download
memory/404-14-0x0000000001230000-0x0000000001245000-memory.dmp

Filesize
84KB

Download
memory/404-20-0x0000000001230000-0x0000000001245000-memory.dmp

Filesize
84KB

Download
memory/1376-2-0x00000000004A0000-0x00000000004B3000-memory.dmp

Filesize
76KB

Download
memory/1376-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1376-1-0x0000000000580000-0x0000000000680000-memory.dmp

Filesize
1024KB

Download
memory/1376-19-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1376-18-0x00000000004A0000-0x00000000004B3000-memory.dmp

Filesize
76KB

Download
memory/1376-17-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4744-9-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4744-16-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4744-10-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4744-8-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads