tofsee | 91f1a926f468016df323494e05f10cd9599caace8a2763855317583a1304ec91

Analysis

max time kernel
149s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
02-02-2025 20:23

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General

Target

2025-02-02_70d5445aff643254820787e3d9d98fd7_mafia.exe
Size

13.3MB
MD5

70d5445aff643254820787e3d9d98fd7
SHA1

05a3e621f1ff47a109c7e96b93c51a7691ff122e
SHA256

91f1a926f468016df323494e05f10cd9599caace8a2763855317583a1304ec91
SHA512

669fee94508138f34d52478a40fb78ac8fd3994e991e30204b4edfd5160c21b87d77720079603a1548d79f91fb00e074dc38dd24da3a6b9a9ab2fd37e537b744
SSDEEP

393216:vXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXn:

Score

10^/10

tofsee defense_evasion discovery 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

defense_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\fzabumce = "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

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2632	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\fzabumce\ImagePath = "C:\\Windows\\SysWOW64\\fzabumce\\uuvgbcai.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2744	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2844	uuvgbcai.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2844 set thread context of 2744	2844	uuvgbcai.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
1232	sc.exe
2736	sc.exe
2344	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-02_70d5445aff643254820787e3d9d98fd7_mafia.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	uuvgbcai.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	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1804 wrote to memory of 2352	1804	2025-02-02_70d5445aff643254820787e3d9d98fd7_mafia.exe	30
PID 1804 wrote to memory of 2352	1804	2025-02-02_70d5445aff643254820787e3d9d98fd7_mafia.exe	30
PID 1804 wrote to memory of 2352	1804	2025-02-02_70d5445aff643254820787e3d9d98fd7_mafia.exe	30
PID 1804 wrote to memory of 2352	1804	2025-02-02_70d5445aff643254820787e3d9d98fd7_mafia.exe	30
PID 1804 wrote to memory of 2396	1804	2025-02-02_70d5445aff643254820787e3d9d98fd7_mafia.exe	32
PID 1804 wrote to memory of 2396	1804	2025-02-02_70d5445aff643254820787e3d9d98fd7_mafia.exe	32
PID 1804 wrote to memory of 2396	1804	2025-02-02_70d5445aff643254820787e3d9d98fd7_mafia.exe	32
PID 1804 wrote to memory of 2396	1804	2025-02-02_70d5445aff643254820787e3d9d98fd7_mafia.exe	32
PID 1804 wrote to memory of 1232	1804	2025-02-02_70d5445aff643254820787e3d9d98fd7_mafia.exe	34
PID 1804 wrote to memory of 1232	1804	2025-02-02_70d5445aff643254820787e3d9d98fd7_mafia.exe	34
PID 1804 wrote to memory of 1232	1804	2025-02-02_70d5445aff643254820787e3d9d98fd7_mafia.exe	34
PID 1804 wrote to memory of 1232	1804	2025-02-02_70d5445aff643254820787e3d9d98fd7_mafia.exe	34
PID 1804 wrote to memory of 2736	1804	2025-02-02_70d5445aff643254820787e3d9d98fd7_mafia.exe	36
PID 1804 wrote to memory of 2736	1804	2025-02-02_70d5445aff643254820787e3d9d98fd7_mafia.exe	36
PID 1804 wrote to memory of 2736	1804	2025-02-02_70d5445aff643254820787e3d9d98fd7_mafia.exe	36
PID 1804 wrote to memory of 2736	1804	2025-02-02_70d5445aff643254820787e3d9d98fd7_mafia.exe	36
PID 1804 wrote to memory of 2344	1804	2025-02-02_70d5445aff643254820787e3d9d98fd7_mafia.exe	38
PID 1804 wrote to memory of 2344	1804	2025-02-02_70d5445aff643254820787e3d9d98fd7_mafia.exe	38
PID 1804 wrote to memory of 2344	1804	2025-02-02_70d5445aff643254820787e3d9d98fd7_mafia.exe	38
PID 1804 wrote to memory of 2344	1804	2025-02-02_70d5445aff643254820787e3d9d98fd7_mafia.exe	38
PID 2844 wrote to memory of 2744	2844	uuvgbcai.exe	41
PID 2844 wrote to memory of 2744	2844	uuvgbcai.exe	41
PID 2844 wrote to memory of 2744	2844	uuvgbcai.exe	41
PID 2844 wrote to memory of 2744	2844	uuvgbcai.exe	41
PID 2844 wrote to memory of 2744	2844	uuvgbcai.exe	41
PID 2844 wrote to memory of 2744	2844	uuvgbcai.exe	41
PID 1804 wrote to memory of 2632	1804	2025-02-02_70d5445aff643254820787e3d9d98fd7_mafia.exe	42
PID 1804 wrote to memory of 2632	1804	2025-02-02_70d5445aff643254820787e3d9d98fd7_mafia.exe	42
PID 1804 wrote to memory of 2632	1804	2025-02-02_70d5445aff643254820787e3d9d98fd7_mafia.exe	42
PID 1804 wrote to memory of 2632	1804	2025-02-02_70d5445aff643254820787e3d9d98fd7_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-02-02_70d5445aff643254820787e3d9d98fd7_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-02_70d5445aff643254820787e3d9d98fd7_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1804
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fzabumce\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2352
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\uuvgbcai.exe" C:\Windows\SysWOW64\fzabumce\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2396
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fzabumce binPath= "C:\Windows\SysWOW64\fzabumce\uuvgbcai.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-02_70d5445aff643254820787e3d9d98fd7_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1232
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fzabumce "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2736
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fzabumce
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2344
- 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:2632

C:\Windows\SysWOW64\fzabumce\uuvgbcai.exe
C:\Windows\SysWOW64\fzabumce\uuvgbcai.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-02_70d5445aff643254820787e3d9d98fd7_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2844
- 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:2744

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
10.7MB

MD5
f45b1daa94d44cf275a507a2a7cf4594

SHA1
fea9a332a4bb10336ea663ca043d6886ba1095e3

SHA256
202bf825402f74e4592a0992503552f76a739ff1ba0b4dde765ae8dae317cf12

SHA512
8ae91b63247fb301595363af9d581329b2a17b3b5a36d82713dd41466b6e78741dc0e5cd0ad7e54a76b04fe79ef3a13b7ec4324b52946ddaae4d688435f0b7f9

Download Submit
memory/1804-1-0x0000000000550000-0x0000000000650000-memory.dmp

Filesize
1024KB

Download
memory/1804-3-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/1804-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1804-15-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/1804-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2744-8-0x00000000000F0000-0x0000000000105000-memory.dmp

Filesize
84KB

Download
memory/2744-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2744-11-0x00000000000F0000-0x0000000000105000-memory.dmp

Filesize
84KB

Download
memory/2744-17-0x00000000000F0000-0x0000000000105000-memory.dmp

Filesize
84KB

Download
memory/2744-18-0x00000000000F0000-0x0000000000105000-memory.dmp

Filesize
84KB

Download
memory/2844-13-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads