tofsee | 5500b8a4b2bc75d90f9a81116726d643dbd0822b2dbcab9fc18dd584abdccaa7

General

Target

2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe
Size

10.9MB
MD5

3e00badf3dad2fe1c427f9dcbd3af132
SHA1

2c24740612b6898181e04cd18417c3e5a826a416
SHA256

5500b8a4b2bc75d90f9a81116726d643dbd0822b2dbcab9fc18dd584abdccaa7
SHA512

5147431e831baf236db10c2a3d6e3d299444a76af2f74d1da17a5837be509931bb487fd6a240b30b02bf971efbdd9c1c0e9dc2a0279c335c85309132c87773c4
SSDEEP

24576:x6WdLQkyQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQI:YWdLQk

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
1684	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\ocrfwvdl\ImagePath = "C:\\Windows\\SysWOW64\\ocrfwvdl\\chrmgspr.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	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe

Deletes itself 1 IoCs

pid	Process
3092	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2420	chrmgspr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2420 set thread context of 3092	2420	chrmgspr.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
1672	sc.exe
824	sc.exe
4524	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3944	4076	WerFault.exe	83
3052	2420	WerFault.exe	94

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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chrmgspr.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4076 wrote to memory of 1556	4076	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	84
PID 4076 wrote to memory of 1556	4076	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	84
PID 4076 wrote to memory of 1556	4076	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	84
PID 4076 wrote to memory of 4992	4076	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	86
PID 4076 wrote to memory of 4992	4076	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	86
PID 4076 wrote to memory of 4992	4076	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	86
PID 4076 wrote to memory of 824	4076	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	88
PID 4076 wrote to memory of 824	4076	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	88
PID 4076 wrote to memory of 824	4076	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	88
PID 4076 wrote to memory of 4524	4076	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	90
PID 4076 wrote to memory of 4524	4076	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	90
PID 4076 wrote to memory of 4524	4076	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	90
PID 4076 wrote to memory of 1672	4076	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	92
PID 4076 wrote to memory of 1672	4076	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	92
PID 4076 wrote to memory of 1672	4076	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	92
PID 4076 wrote to memory of 1684	4076	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	95
PID 4076 wrote to memory of 1684	4076	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	95
PID 4076 wrote to memory of 1684	4076	2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe	95
PID 2420 wrote to memory of 3092	2420	chrmgspr.exe	100
PID 2420 wrote to memory of 3092	2420	chrmgspr.exe	100
PID 2420 wrote to memory of 3092	2420	chrmgspr.exe	100
PID 2420 wrote to memory of 3092	2420	chrmgspr.exe	100
PID 2420 wrote to memory of 3092	2420	chrmgspr.exe	100

C:\Users\Admin\AppData\Local\Temp\2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4076
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ocrfwvdl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1556
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\chrmgspr.exe" C:\Windows\SysWOW64\ocrfwvdl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4992
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ocrfwvdl binPath= "C:\Windows\SysWOW64\ocrfwvdl\chrmgspr.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:824
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ocrfwvdl "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4524
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ocrfwvdl
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1672
- 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:1684
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4076 -s 812
  2⤵
  - Program crash
  PID:3944

C:\Windows\SysWOW64\ocrfwvdl\chrmgspr.exe
C:\Windows\SysWOW64\ocrfwvdl\chrmgspr.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_3e00badf3dad2fe1c427f9dcbd3af132_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2420
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3092
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2420 -s 512
  2⤵
  - Program crash
  PID:3052

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4076 -ip 4076
1⤵
PID:3628

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2420 -ip 2420
1⤵
PID:3216

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\chrmgspr.exe

Filesize
12.7MB

MD5
a17ed6835c89c87c485c562eac592925

SHA1
f330393479a9f44864b0ea031bdd939cbd823dbf

SHA256
19770d0ef5063c046a7f3dc8175ddd4c6f83588728b6b5c000fac15aeeee7bbd

SHA512
1208ac4f66331ec856c3d3c7475a1826d72750c9aed908782f3e4f942e456d224b25f70d387b2eb058f03b458cac863ce8976bda27230188d5acf7e90b2d7019

Download Submit
memory/2420-13-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2420-12-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2420-11-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2420-18-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/3092-14-0x00000000012F0000-0x0000000001305000-memory.dmp

Filesize
84KB

Download
memory/3092-16-0x00000000012F0000-0x0000000001305000-memory.dmp

Filesize
84KB

Download
memory/3092-17-0x00000000012F0000-0x0000000001305000-memory.dmp

Filesize
84KB

Download
memory/4076-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4076-2-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/4076-7-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4076-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4076-8-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/4076-1-0x00000000004C0000-0x00000000005C0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads