tofsee | 4b473923cc919a95d186f942b64234135bdd394d807125b5bbe156880468cd1d

Analysis

max time kernel
144s
max time network
119s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
03-02-2025 10:54

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General

Target

2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe
Size

12.8MB
MD5

c3e93ca2e3da9a3312d9135707fe915c
SHA1

35f259f2b8460d68f3620c13cdb94fbb105b7897
SHA256

4b473923cc919a95d186f942b64234135bdd394d807125b5bbe156880468cd1d
SHA512

e4eafa3e69784456cb0d0fde4edbee2a933d05af833701e0c0e2f22e872396ae7306f2822996be883d187c0ca0017642596a888d1e1f42ca332feaee40791947
SSDEEP

24576:PEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZT:Mfotx

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\rrjhunaf = "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
3012	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\rrjhunaf\ImagePath = "C:\\Windows\\SysWOW64\\rrjhunaf\\xtllixwk.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2756	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2460	xtllixwk.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2460 set thread context of 2756	2460	xtllixwk.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2352	sc.exe
1700	sc.exe
2324	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

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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xtllixwk.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2708 wrote to memory of 2136	2708	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	30
PID 2708 wrote to memory of 2136	2708	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	30
PID 2708 wrote to memory of 2136	2708	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	30
PID 2708 wrote to memory of 2136	2708	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	30
PID 2708 wrote to memory of 2552	2708	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	32
PID 2708 wrote to memory of 2552	2708	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	32
PID 2708 wrote to memory of 2552	2708	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	32
PID 2708 wrote to memory of 2552	2708	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	32
PID 2708 wrote to memory of 2352	2708	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	34
PID 2708 wrote to memory of 2352	2708	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	34
PID 2708 wrote to memory of 2352	2708	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	34
PID 2708 wrote to memory of 2352	2708	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	34
PID 2708 wrote to memory of 1700	2708	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	36
PID 2708 wrote to memory of 1700	2708	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	36
PID 2708 wrote to memory of 1700	2708	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	36
PID 2708 wrote to memory of 1700	2708	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	36
PID 2708 wrote to memory of 2324	2708	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	38
PID 2708 wrote to memory of 2324	2708	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	38
PID 2708 wrote to memory of 2324	2708	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	38
PID 2708 wrote to memory of 2324	2708	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	38
PID 2460 wrote to memory of 2756	2460	xtllixwk.exe	41
PID 2460 wrote to memory of 2756	2460	xtllixwk.exe	41
PID 2460 wrote to memory of 2756	2460	xtllixwk.exe	41
PID 2460 wrote to memory of 2756	2460	xtllixwk.exe	41
PID 2460 wrote to memory of 2756	2460	xtllixwk.exe	41
PID 2460 wrote to memory of 2756	2460	xtllixwk.exe	41
PID 2708 wrote to memory of 3012	2708	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	42
PID 2708 wrote to memory of 3012	2708	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	42
PID 2708 wrote to memory of 3012	2708	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	42
PID 2708 wrote to memory of 3012	2708	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2708
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rrjhunaf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2136
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xtllixwk.exe" C:\Windows\SysWOW64\rrjhunaf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2552
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create rrjhunaf binPath= "C:\Windows\SysWOW64\rrjhunaf\xtllixwk.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2352
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description rrjhunaf "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1700
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start rrjhunaf
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2324
- 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:3012

C:\Windows\SysWOW64\rrjhunaf\xtllixwk.exe
C:\Windows\SysWOW64\rrjhunaf\xtllixwk.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2460
- 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:2756

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\xtllixwk.exe

Filesize
12.8MB

MD5
6499a27aa885c287577812ec686c1f4d

SHA1
cda7f0ae675b485cd40f2486fe7067d109e236d4

SHA256
b2cf060f110cd4d8df2a461ad4d23b23e46a2e038657976a72e3449a303bb874

SHA512
e652313aae00aaf9eb422cdb2a06e6019242a89ba9a43604ee2c667801fbd057317756bdcc7acd1df88d470ccfaabeef3cad43749e83642eb44490a5a3f8881e

Download Submit
memory/2460-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2708-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2708-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2708-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2708-14-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2708-1-0x0000000000600000-0x0000000000700000-memory.dmp

Filesize
1024KB

Download
memory/2708-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2756-8-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2756-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2756-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2756-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2756-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads