tofsee | 02c394db4c8a4ca4e1d4a6c06285233de8c74079e4908caa151921936df67598

Analysis

max time kernel
144s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
06-02-2025 14:44

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General

Target

2025-02-06_5c8dd9bde13889f4abc1f3e62a14e1ad_mafia.exe
Size

12.8MB
MD5

5c8dd9bde13889f4abc1f3e62a14e1ad
SHA1

59306df44642a5d7b1d7341739dbb298d189cfe0
SHA256

02c394db4c8a4ca4e1d4a6c06285233de8c74079e4908caa151921936df67598
SHA512

ceb0d0a38d0b3291edd580e57976d6186498f496a7c6758aeae5f6126e01183741bb561bc09759eee7ed097ccf0093b90c44d00ee250b9ba9af60c9e3e1e91eb
SSDEEP

24576:PEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZr:MfotF

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\uttkwnws = "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
2636	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\uttkwnws\ImagePath = "C:\\Windows\\SysWOW64\\uttkwnws\\rielcbfj.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2860	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2632	rielcbfj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2632 set thread context of 2860	2632	rielcbfj.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2848	sc.exe
2620	sc.exe
2196	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-06_5c8dd9bde13889f4abc1f3e62a14e1ad_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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rielcbfj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1088 wrote to memory of 2792	1088	2025-02-06_5c8dd9bde13889f4abc1f3e62a14e1ad_mafia.exe	30
PID 1088 wrote to memory of 2792	1088	2025-02-06_5c8dd9bde13889f4abc1f3e62a14e1ad_mafia.exe	30
PID 1088 wrote to memory of 2792	1088	2025-02-06_5c8dd9bde13889f4abc1f3e62a14e1ad_mafia.exe	30
PID 1088 wrote to memory of 2792	1088	2025-02-06_5c8dd9bde13889f4abc1f3e62a14e1ad_mafia.exe	30
PID 1088 wrote to memory of 2736	1088	2025-02-06_5c8dd9bde13889f4abc1f3e62a14e1ad_mafia.exe	32
PID 1088 wrote to memory of 2736	1088	2025-02-06_5c8dd9bde13889f4abc1f3e62a14e1ad_mafia.exe	32
PID 1088 wrote to memory of 2736	1088	2025-02-06_5c8dd9bde13889f4abc1f3e62a14e1ad_mafia.exe	32
PID 1088 wrote to memory of 2736	1088	2025-02-06_5c8dd9bde13889f4abc1f3e62a14e1ad_mafia.exe	32
PID 1088 wrote to memory of 2848	1088	2025-02-06_5c8dd9bde13889f4abc1f3e62a14e1ad_mafia.exe	34
PID 1088 wrote to memory of 2848	1088	2025-02-06_5c8dd9bde13889f4abc1f3e62a14e1ad_mafia.exe	34
PID 1088 wrote to memory of 2848	1088	2025-02-06_5c8dd9bde13889f4abc1f3e62a14e1ad_mafia.exe	34
PID 1088 wrote to memory of 2848	1088	2025-02-06_5c8dd9bde13889f4abc1f3e62a14e1ad_mafia.exe	34
PID 1088 wrote to memory of 2620	1088	2025-02-06_5c8dd9bde13889f4abc1f3e62a14e1ad_mafia.exe	36
PID 1088 wrote to memory of 2620	1088	2025-02-06_5c8dd9bde13889f4abc1f3e62a14e1ad_mafia.exe	36
PID 1088 wrote to memory of 2620	1088	2025-02-06_5c8dd9bde13889f4abc1f3e62a14e1ad_mafia.exe	36
PID 1088 wrote to memory of 2620	1088	2025-02-06_5c8dd9bde13889f4abc1f3e62a14e1ad_mafia.exe	36
PID 1088 wrote to memory of 2196	1088	2025-02-06_5c8dd9bde13889f4abc1f3e62a14e1ad_mafia.exe	38
PID 1088 wrote to memory of 2196	1088	2025-02-06_5c8dd9bde13889f4abc1f3e62a14e1ad_mafia.exe	38
PID 1088 wrote to memory of 2196	1088	2025-02-06_5c8dd9bde13889f4abc1f3e62a14e1ad_mafia.exe	38
PID 1088 wrote to memory of 2196	1088	2025-02-06_5c8dd9bde13889f4abc1f3e62a14e1ad_mafia.exe	38
PID 2632 wrote to memory of 2860	2632	rielcbfj.exe	41
PID 2632 wrote to memory of 2860	2632	rielcbfj.exe	41
PID 2632 wrote to memory of 2860	2632	rielcbfj.exe	41
PID 2632 wrote to memory of 2860	2632	rielcbfj.exe	41
PID 2632 wrote to memory of 2860	2632	rielcbfj.exe	41
PID 2632 wrote to memory of 2860	2632	rielcbfj.exe	41
PID 1088 wrote to memory of 2636	1088	2025-02-06_5c8dd9bde13889f4abc1f3e62a14e1ad_mafia.exe	42
PID 1088 wrote to memory of 2636	1088	2025-02-06_5c8dd9bde13889f4abc1f3e62a14e1ad_mafia.exe	42
PID 1088 wrote to memory of 2636	1088	2025-02-06_5c8dd9bde13889f4abc1f3e62a14e1ad_mafia.exe	42
PID 1088 wrote to memory of 2636	1088	2025-02-06_5c8dd9bde13889f4abc1f3e62a14e1ad_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-02-06_5c8dd9bde13889f4abc1f3e62a14e1ad_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-06_5c8dd9bde13889f4abc1f3e62a14e1ad_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1088
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\uttkwnws\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2792
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rielcbfj.exe" C:\Windows\SysWOW64\uttkwnws\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2736
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create uttkwnws binPath= "C:\Windows\SysWOW64\uttkwnws\rielcbfj.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-06_5c8dd9bde13889f4abc1f3e62a14e1ad_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2848
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description uttkwnws "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2620
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start uttkwnws
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2196
- 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:2636

C:\Windows\SysWOW64\uttkwnws\rielcbfj.exe
C:\Windows\SysWOW64\uttkwnws\rielcbfj.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-06_5c8dd9bde13889f4abc1f3e62a14e1ad_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2632
- 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:2860

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\rielcbfj.exe

Filesize
10.2MB

MD5
d83ada77a6b10d23f0c2e5257c1c5183

SHA1
afa1ba2e7dd341ec255a52f1e679e54a3795d42b

SHA256
31257bf70834868a1f9759dfb881c41c0be5e8c2a8ec1fe404578bf926613ce3

SHA512
44d2f387d03112a104fbcbaa0ba3aab60e854ea292bff70410099e8dd265d4d9218f9f6cc95633f3681f594ab74072823cad4498d80ee3e631c739e0497c25d5

Download Submit
memory/1088-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1088-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1088-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1088-14-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1088-1-0x00000000004C0000-0x00000000005C0000-memory.dmp

Filesize
1024KB

Download
memory/1088-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2632-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2860-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2860-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2860-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2860-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2860-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads