tofsee | c2462031e9c2f156f9a89c27320d0036edb3427cae1e0cb21bf0ae4f471ea096

General

Target

2025-01-31_b971953fa94f09aaf4a08b85ee7eeb12_mafia.exe
Size

10.3MB
MD5

b971953fa94f09aaf4a08b85ee7eeb12
SHA1

3b90a0643cdae964cc19eef84b1ab54caa5e43cb
SHA256

c2462031e9c2f156f9a89c27320d0036edb3427cae1e0cb21bf0ae4f471ea096
SHA512

5f3ece8f8c90a6bd18df664bcbf9575dbe41b74351d910d4e62a68640f0555e5bdb9921b8a96ee9f929f269aa2aebe9c45a1cab8ec333cbfd4056bd31f247fda
SSDEEP

3072:QLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:tOMdRQr7OB0ypmMXnl8XEPM3noSWOC

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
2508	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\bpfzseex\ImagePath = "C:\\Windows\\SysWOW64\\bpfzseex\\cbprfcdv.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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	2025-01-31_b971953fa94f09aaf4a08b85ee7eeb12_mafia.exe

Deletes itself 1 IoCs

pid	Process
2832	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4232	cbprfcdv.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4232 set thread context of 2832	4232	cbprfcdv.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
1984	sc.exe
2984	sc.exe
3308	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
1052	1080	WerFault.exe	81
2856	4232	WerFault.exe	92

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	2025-01-31_b971953fa94f09aaf4a08b85ee7eeb12_mafia.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	cbprfcdv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1080 wrote to memory of 4732	1080	2025-01-31_b971953fa94f09aaf4a08b85ee7eeb12_mafia.exe	82
PID 1080 wrote to memory of 4732	1080	2025-01-31_b971953fa94f09aaf4a08b85ee7eeb12_mafia.exe	82
PID 1080 wrote to memory of 4732	1080	2025-01-31_b971953fa94f09aaf4a08b85ee7eeb12_mafia.exe	82
PID 1080 wrote to memory of 4144	1080	2025-01-31_b971953fa94f09aaf4a08b85ee7eeb12_mafia.exe	84
PID 1080 wrote to memory of 4144	1080	2025-01-31_b971953fa94f09aaf4a08b85ee7eeb12_mafia.exe	84
PID 1080 wrote to memory of 4144	1080	2025-01-31_b971953fa94f09aaf4a08b85ee7eeb12_mafia.exe	84
PID 1080 wrote to memory of 1984	1080	2025-01-31_b971953fa94f09aaf4a08b85ee7eeb12_mafia.exe	86
PID 1080 wrote to memory of 1984	1080	2025-01-31_b971953fa94f09aaf4a08b85ee7eeb12_mafia.exe	86
PID 1080 wrote to memory of 1984	1080	2025-01-31_b971953fa94f09aaf4a08b85ee7eeb12_mafia.exe	86
PID 1080 wrote to memory of 2984	1080	2025-01-31_b971953fa94f09aaf4a08b85ee7eeb12_mafia.exe	88
PID 1080 wrote to memory of 2984	1080	2025-01-31_b971953fa94f09aaf4a08b85ee7eeb12_mafia.exe	88
PID 1080 wrote to memory of 2984	1080	2025-01-31_b971953fa94f09aaf4a08b85ee7eeb12_mafia.exe	88
PID 1080 wrote to memory of 3308	1080	2025-01-31_b971953fa94f09aaf4a08b85ee7eeb12_mafia.exe	90
PID 1080 wrote to memory of 3308	1080	2025-01-31_b971953fa94f09aaf4a08b85ee7eeb12_mafia.exe	90
PID 1080 wrote to memory of 3308	1080	2025-01-31_b971953fa94f09aaf4a08b85ee7eeb12_mafia.exe	90
PID 1080 wrote to memory of 2508	1080	2025-01-31_b971953fa94f09aaf4a08b85ee7eeb12_mafia.exe	93
PID 1080 wrote to memory of 2508	1080	2025-01-31_b971953fa94f09aaf4a08b85ee7eeb12_mafia.exe	93
PID 1080 wrote to memory of 2508	1080	2025-01-31_b971953fa94f09aaf4a08b85ee7eeb12_mafia.exe	93
PID 4232 wrote to memory of 2832	4232	cbprfcdv.exe	98
PID 4232 wrote to memory of 2832	4232	cbprfcdv.exe	98
PID 4232 wrote to memory of 2832	4232	cbprfcdv.exe	98
PID 4232 wrote to memory of 2832	4232	cbprfcdv.exe	98
PID 4232 wrote to memory of 2832	4232	cbprfcdv.exe	98

C:\Users\Admin\AppData\Local\Temp\2025-01-31_b971953fa94f09aaf4a08b85ee7eeb12_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-31_b971953fa94f09aaf4a08b85ee7eeb12_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1080
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bpfzseex\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4732
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cbprfcdv.exe" C:\Windows\SysWOW64\bpfzseex\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4144
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bpfzseex binPath= "C:\Windows\SysWOW64\bpfzseex\cbprfcdv.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-31_b971953fa94f09aaf4a08b85ee7eeb12_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1984
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bpfzseex "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2984
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bpfzseex
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3308
- 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:2508
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1080 -s 1232
  2⤵
  - Program crash
  PID:1052

C:\Windows\SysWOW64\bpfzseex\cbprfcdv.exe
C:\Windows\SysWOW64\bpfzseex\cbprfcdv.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-31_b971953fa94f09aaf4a08b85ee7eeb12_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4232
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2832
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4232 -s 508
  2⤵
  - Program crash
  PID:2856

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1080 -ip 1080
1⤵
PID:1840

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 4232 -ip 4232
1⤵
PID:3664

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\cbprfcdv.exe

Filesize
12.0MB

MD5
5fc1e67a696a018c6c78f497ef41ba3a

SHA1
56332777fdaca06148e734c2943fa726081c6215

SHA256
d6c2e18d1b0fc18e4c4eabcb2f3d9b0deb5ec7239fe441e9951ae7db75f1d086

SHA512
b2f6c27ae657a6b086d1362bae2998261a25897453cc4e7a184bb3ce56a5133c3e977fd51d015743e44141e43c3eee1d8cd2549aacfa9da1c5fb36d1e2159f6c

Download Submit
memory/1080-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1080-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1080-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/1080-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1080-8-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/1080-1-0x00000000007E0000-0x00000000008E0000-memory.dmp

Filesize
1024KB

Download
memory/2832-14-0x0000000000F30000-0x0000000000F45000-memory.dmp

Filesize
84KB

Download
memory/2832-16-0x0000000000F30000-0x0000000000F45000-memory.dmp

Filesize
84KB

Download
memory/2832-17-0x0000000000F30000-0x0000000000F45000-memory.dmp

Filesize
84KB

Download
memory/4232-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4232-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4232-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4232-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads