tofsee | cdf608f60357488ef40b0977e2f39dba1f9180bc7a6f338b4500c7935faab9b3

Analysis

max time kernel
143s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
10-01-2025 15:57

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General

Target

2025-01-10_9e52058daec83a315865f8c90795d4c8_mafia.exe
Size

13.7MB
MD5

9e52058daec83a315865f8c90795d4c8
SHA1

a8cdaaeac7c10726f06d7ea25eb60964203cc39d
SHA256

cdf608f60357488ef40b0977e2f39dba1f9180bc7a6f338b4500c7935faab9b3
SHA512

1372a2124528d8dade2c23ffb21443d20c84a42b142b42c3262607aff8cd20ebc68410665b294c5db3c685914bfd6733fb9e1a32a39c7efd4f4573c3c95c11db
SSDEEP

24576:66WdLQkyQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQo:zWdLQk

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

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

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\mfbvrmma = "0"	svchost.exe

Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2312	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\mfbvrmma\ImagePath = "C:\\Windows\\SysWOW64\\mfbvrmma\\uuvgbcai.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2800	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2996	uuvgbcai.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2996 set thread context of 2800	2996	uuvgbcai.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2376	sc.exe
2860	sc.exe
2760	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	uuvgbcai.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	2025-01-10_9e52058daec83a315865f8c90795d4c8_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

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2356 wrote to memory of 2372	2356	2025-01-10_9e52058daec83a315865f8c90795d4c8_mafia.exe	30
PID 2356 wrote to memory of 2372	2356	2025-01-10_9e52058daec83a315865f8c90795d4c8_mafia.exe	30
PID 2356 wrote to memory of 2372	2356	2025-01-10_9e52058daec83a315865f8c90795d4c8_mafia.exe	30
PID 2356 wrote to memory of 2372	2356	2025-01-10_9e52058daec83a315865f8c90795d4c8_mafia.exe	30
PID 2356 wrote to memory of 2056	2356	2025-01-10_9e52058daec83a315865f8c90795d4c8_mafia.exe	32
PID 2356 wrote to memory of 2056	2356	2025-01-10_9e52058daec83a315865f8c90795d4c8_mafia.exe	32
PID 2356 wrote to memory of 2056	2356	2025-01-10_9e52058daec83a315865f8c90795d4c8_mafia.exe	32
PID 2356 wrote to memory of 2056	2356	2025-01-10_9e52058daec83a315865f8c90795d4c8_mafia.exe	32
PID 2356 wrote to memory of 2376	2356	2025-01-10_9e52058daec83a315865f8c90795d4c8_mafia.exe	34
PID 2356 wrote to memory of 2376	2356	2025-01-10_9e52058daec83a315865f8c90795d4c8_mafia.exe	34
PID 2356 wrote to memory of 2376	2356	2025-01-10_9e52058daec83a315865f8c90795d4c8_mafia.exe	34
PID 2356 wrote to memory of 2376	2356	2025-01-10_9e52058daec83a315865f8c90795d4c8_mafia.exe	34
PID 2356 wrote to memory of 2860	2356	2025-01-10_9e52058daec83a315865f8c90795d4c8_mafia.exe	36
PID 2356 wrote to memory of 2860	2356	2025-01-10_9e52058daec83a315865f8c90795d4c8_mafia.exe	36
PID 2356 wrote to memory of 2860	2356	2025-01-10_9e52058daec83a315865f8c90795d4c8_mafia.exe	36
PID 2356 wrote to memory of 2860	2356	2025-01-10_9e52058daec83a315865f8c90795d4c8_mafia.exe	36
PID 2356 wrote to memory of 2760	2356	2025-01-10_9e52058daec83a315865f8c90795d4c8_mafia.exe	38
PID 2356 wrote to memory of 2760	2356	2025-01-10_9e52058daec83a315865f8c90795d4c8_mafia.exe	38
PID 2356 wrote to memory of 2760	2356	2025-01-10_9e52058daec83a315865f8c90795d4c8_mafia.exe	38
PID 2356 wrote to memory of 2760	2356	2025-01-10_9e52058daec83a315865f8c90795d4c8_mafia.exe	38
PID 2356 wrote to memory of 2312	2356	2025-01-10_9e52058daec83a315865f8c90795d4c8_mafia.exe	41
PID 2356 wrote to memory of 2312	2356	2025-01-10_9e52058daec83a315865f8c90795d4c8_mafia.exe	41
PID 2356 wrote to memory of 2312	2356	2025-01-10_9e52058daec83a315865f8c90795d4c8_mafia.exe	41
PID 2356 wrote to memory of 2312	2356	2025-01-10_9e52058daec83a315865f8c90795d4c8_mafia.exe	41
PID 2996 wrote to memory of 2800	2996	uuvgbcai.exe	43
PID 2996 wrote to memory of 2800	2996	uuvgbcai.exe	43
PID 2996 wrote to memory of 2800	2996	uuvgbcai.exe	43
PID 2996 wrote to memory of 2800	2996	uuvgbcai.exe	43
PID 2996 wrote to memory of 2800	2996	uuvgbcai.exe	43
PID 2996 wrote to memory of 2800	2996	uuvgbcai.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-01-10_9e52058daec83a315865f8c90795d4c8_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-10_9e52058daec83a315865f8c90795d4c8_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2356
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mfbvrmma\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2372
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\uuvgbcai.exe" C:\Windows\SysWOW64\mfbvrmma\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2056
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mfbvrmma binPath= "C:\Windows\SysWOW64\mfbvrmma\uuvgbcai.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-10_9e52058daec83a315865f8c90795d4c8_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2376
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mfbvrmma "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2860
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mfbvrmma
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2760
- 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:2312

C:\Windows\SysWOW64\mfbvrmma\uuvgbcai.exe
C:\Windows\SysWOW64\mfbvrmma\uuvgbcai.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-10_9e52058daec83a315865f8c90795d4c8_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2996
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2800

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\uuvgbcai.exe

Filesize
14.1MB

MD5
9da290c096c7a961d9e45b092e14fc4d

SHA1
639cbddfaddefafb549b7241e100cdd4c9fedb27

SHA256
854f50a2d4a6ada7ae92eab917f9d65b9f8663eeaa90b0b801863b3e4e624423

SHA512
76c960bb83651e70cffb4e736670b650e3d1362a6461e268913b7036e071823edf6070a5f567feb055899534fa793d6aa11a9dc60d98d6427b9a406c558e489f

Download Submit
memory/2356-7-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2356-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2356-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2356-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2356-8-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2356-1-0x0000000000290000-0x0000000000390000-memory.dmp

Filesize
1024KB

Download
memory/2800-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2800-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2800-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2800-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2800-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2996-15-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads