tofsee | fb2fa847a71466bb96ed80e586855c44b9522a61be554bc3baeac519fb1b97fc

General

Target

2025-02-02_1705f6e9eef537fcdde2eb5f74100873_mafia.exe
Size

14.9MB
MD5

1705f6e9eef537fcdde2eb5f74100873
SHA1

63351f6c99df692f9d2a06e7b810df741a356f42
SHA256

fb2fa847a71466bb96ed80e586855c44b9522a61be554bc3baeac519fb1b97fc
SHA512

e1fffcc34e20fccc99d246280eba2d009916d1370d7d32105689f84771f1f1e427e71711ecc1e3bc1efe0464d4a32c98e4fa82317b1c9c030bb28170517909bb
SSDEEP

24576:bEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZf:ofot

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
2140	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\xigrppst\ImagePath = "C:\\Windows\\SysWOW64\\xigrppst\\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-1-5-21-1412605595-2147700071-3468511006-1000\Control Panel\International\Geo\Nation	2025-02-02_1705f6e9eef537fcdde2eb5f74100873_mafia.exe

Deletes itself 1 IoCs

pid	Process
1844	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1132	rnffcrqe.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1132 set thread context of 1844	1132	rnffcrqe.exe	106

Launches sc.exe 3 IoCs

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

pid	Process
3044	sc.exe
4972	sc.exe
3548	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
2888	1496	WerFault.exe	82
4448	1132	WerFault.exe	99

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rnffcrqe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-02_1705f6e9eef537fcdde2eb5f74100873_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1496 wrote to memory of 2360	1496	2025-02-02_1705f6e9eef537fcdde2eb5f74100873_mafia.exe	89
PID 1496 wrote to memory of 2360	1496	2025-02-02_1705f6e9eef537fcdde2eb5f74100873_mafia.exe	89
PID 1496 wrote to memory of 2360	1496	2025-02-02_1705f6e9eef537fcdde2eb5f74100873_mafia.exe	89
PID 1496 wrote to memory of 1668	1496	2025-02-02_1705f6e9eef537fcdde2eb5f74100873_mafia.exe	91
PID 1496 wrote to memory of 1668	1496	2025-02-02_1705f6e9eef537fcdde2eb5f74100873_mafia.exe	91
PID 1496 wrote to memory of 1668	1496	2025-02-02_1705f6e9eef537fcdde2eb5f74100873_mafia.exe	91
PID 1496 wrote to memory of 3044	1496	2025-02-02_1705f6e9eef537fcdde2eb5f74100873_mafia.exe	93
PID 1496 wrote to memory of 3044	1496	2025-02-02_1705f6e9eef537fcdde2eb5f74100873_mafia.exe	93
PID 1496 wrote to memory of 3044	1496	2025-02-02_1705f6e9eef537fcdde2eb5f74100873_mafia.exe	93
PID 1496 wrote to memory of 4972	1496	2025-02-02_1705f6e9eef537fcdde2eb5f74100873_mafia.exe	95
PID 1496 wrote to memory of 4972	1496	2025-02-02_1705f6e9eef537fcdde2eb5f74100873_mafia.exe	95
PID 1496 wrote to memory of 4972	1496	2025-02-02_1705f6e9eef537fcdde2eb5f74100873_mafia.exe	95
PID 1496 wrote to memory of 3548	1496	2025-02-02_1705f6e9eef537fcdde2eb5f74100873_mafia.exe	97
PID 1496 wrote to memory of 3548	1496	2025-02-02_1705f6e9eef537fcdde2eb5f74100873_mafia.exe	97
PID 1496 wrote to memory of 3548	1496	2025-02-02_1705f6e9eef537fcdde2eb5f74100873_mafia.exe	97
PID 1496 wrote to memory of 2140	1496	2025-02-02_1705f6e9eef537fcdde2eb5f74100873_mafia.exe	100
PID 1496 wrote to memory of 2140	1496	2025-02-02_1705f6e9eef537fcdde2eb5f74100873_mafia.exe	100
PID 1496 wrote to memory of 2140	1496	2025-02-02_1705f6e9eef537fcdde2eb5f74100873_mafia.exe	100
PID 1132 wrote to memory of 1844	1132	rnffcrqe.exe	106
PID 1132 wrote to memory of 1844	1132	rnffcrqe.exe	106
PID 1132 wrote to memory of 1844	1132	rnffcrqe.exe	106
PID 1132 wrote to memory of 1844	1132	rnffcrqe.exe	106
PID 1132 wrote to memory of 1844	1132	rnffcrqe.exe	106

C:\Users\Admin\AppData\Local\Temp\2025-02-02_1705f6e9eef537fcdde2eb5f74100873_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-02_1705f6e9eef537fcdde2eb5f74100873_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1496
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xigrppst\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2360
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rnffcrqe.exe" C:\Windows\SysWOW64\xigrppst\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1668
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create xigrppst binPath= "C:\Windows\SysWOW64\xigrppst\rnffcrqe.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-02_1705f6e9eef537fcdde2eb5f74100873_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3044
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description xigrppst "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4972
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start xigrppst
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3548
- 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:2140
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1496 -s 1044
  2⤵
  - Program crash
  PID:2888

C:\Windows\SysWOW64\xigrppst\rnffcrqe.exe
C:\Windows\SysWOW64\xigrppst\rnffcrqe.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-02_1705f6e9eef537fcdde2eb5f74100873_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1132
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1844
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1132 -s 560
  2⤵
  - Program crash
  PID:4448

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 1496 -ip 1496
1⤵
PID:4232

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 1132 -ip 1132
1⤵
PID:348

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
13.8MB

MD5
a81a1033a94e62a49fdd733d9a0a8b73

SHA1
ac5e31d09d2acb9953b1c47b2b922e143b3d573a

SHA256
749448262a266c8890431a1a356c630e39bf76ba1298f6fa3927c3788b6fbd70

SHA512
6d7b4e67882b9da7e8fc4bc7c4cbc07b32e59ed2c3f2c03262bc4aa6a357e8fc4de2065fc9d344cc29ef587e5f929e9fd4d1a88205cc9d768c5d0a6a40dcdaa5

Download Submit
memory/1132-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1132-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1132-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1132-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1496-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1496-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/1496-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1496-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1496-8-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/1496-1-0x0000000000640000-0x0000000000740000-memory.dmp

Filesize
1024KB

Download
memory/1844-14-0x0000000000FB0000-0x0000000000FC5000-memory.dmp

Filesize
84KB

Download
memory/1844-16-0x0000000000FB0000-0x0000000000FC5000-memory.dmp

Filesize
84KB

Download
memory/1844-17-0x0000000000FB0000-0x0000000000FC5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads