tofsee | 77c4f8d22224f19fe811c10c45c71dad6ff55c2b65d2cec7ccd35a94cc63285c

General

Target

2024-06-24_9b9054b8fa3af489629b5d432c7293bb_mafia.exe
Size

10.8MB
MD5

9b9054b8fa3af489629b5d432c7293bb
SHA1

908b4692abe5046dbd8634922d75da4d50dd0756
SHA256

77c4f8d22224f19fe811c10c45c71dad6ff55c2b65d2cec7ccd35a94cc63285c
SHA512

2b2cb1c2bb5adf7e1590e229dcb39ddca20bbc0fe7d45c48ff432af3d842d8dbaeb053a768e855c1b6d2a74b300c87814b485d4fd5598f5e43071ee5ef5999b3
SSDEEP

6144:I+rWO2zeSPDjMXMH7Ll4aFpWVqIwUAP97GEwHrG2+e1x2:I+r1IeSXMXc7LlxWV4Ug97GZ+ej

Score

10^/10

tofsee evasion 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

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\sxkjuksl = "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

Processes:

netsh.exe

pid process

2476 netsh.exe

pid	process
2476	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\sxkjuksl\ImagePath = "C:\\Windows\\SysWOW64\\sxkjuksl\\nsffihxc.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

3032 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

nsffihxc.exe

pid process

2708 nsffihxc.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

nsffihxc.exe

description pid process target process

PID 2708 set thread context of 3032 2708 nsffihxc.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

2852 sc.exe
2560 sc.exe
2660 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3032	svchost.exe

pid	process
2708	nsffihxc.exe

description	pid	process	target process
PID 2708 set thread context of 3032	2708	nsffihxc.exe	svchost.exe

pid	process
2852	sc.exe
2560	sc.exe
2660	sc.exe

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

Processes:

netsh.exe

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

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

2024-06-24_9b9054b8fa3af489629b5d432c7293bb_mafia.exensffihxc.exe

description	pid	process	target process
PID 2356 wrote to memory of 804	2356	2024-06-24_9b9054b8fa3af489629b5d432c7293bb_mafia.exe	cmd.exe
PID 2356 wrote to memory of 804	2356	2024-06-24_9b9054b8fa3af489629b5d432c7293bb_mafia.exe	cmd.exe
PID 2356 wrote to memory of 804	2356	2024-06-24_9b9054b8fa3af489629b5d432c7293bb_mafia.exe	cmd.exe
PID 2356 wrote to memory of 804	2356	2024-06-24_9b9054b8fa3af489629b5d432c7293bb_mafia.exe	cmd.exe
PID 2356 wrote to memory of 2212	2356	2024-06-24_9b9054b8fa3af489629b5d432c7293bb_mafia.exe	cmd.exe
PID 2356 wrote to memory of 2212	2356	2024-06-24_9b9054b8fa3af489629b5d432c7293bb_mafia.exe	cmd.exe
PID 2356 wrote to memory of 2212	2356	2024-06-24_9b9054b8fa3af489629b5d432c7293bb_mafia.exe	cmd.exe
PID 2356 wrote to memory of 2212	2356	2024-06-24_9b9054b8fa3af489629b5d432c7293bb_mafia.exe	cmd.exe
PID 2356 wrote to memory of 2852	2356	2024-06-24_9b9054b8fa3af489629b5d432c7293bb_mafia.exe	sc.exe
PID 2356 wrote to memory of 2852	2356	2024-06-24_9b9054b8fa3af489629b5d432c7293bb_mafia.exe	sc.exe
PID 2356 wrote to memory of 2852	2356	2024-06-24_9b9054b8fa3af489629b5d432c7293bb_mafia.exe	sc.exe
PID 2356 wrote to memory of 2852	2356	2024-06-24_9b9054b8fa3af489629b5d432c7293bb_mafia.exe	sc.exe
PID 2356 wrote to memory of 2560	2356	2024-06-24_9b9054b8fa3af489629b5d432c7293bb_mafia.exe	sc.exe
PID 2356 wrote to memory of 2560	2356	2024-06-24_9b9054b8fa3af489629b5d432c7293bb_mafia.exe	sc.exe
PID 2356 wrote to memory of 2560	2356	2024-06-24_9b9054b8fa3af489629b5d432c7293bb_mafia.exe	sc.exe
PID 2356 wrote to memory of 2560	2356	2024-06-24_9b9054b8fa3af489629b5d432c7293bb_mafia.exe	sc.exe
PID 2356 wrote to memory of 2660	2356	2024-06-24_9b9054b8fa3af489629b5d432c7293bb_mafia.exe	sc.exe
PID 2356 wrote to memory of 2660	2356	2024-06-24_9b9054b8fa3af489629b5d432c7293bb_mafia.exe	sc.exe
PID 2356 wrote to memory of 2660	2356	2024-06-24_9b9054b8fa3af489629b5d432c7293bb_mafia.exe	sc.exe
PID 2356 wrote to memory of 2660	2356	2024-06-24_9b9054b8fa3af489629b5d432c7293bb_mafia.exe	sc.exe
PID 2708 wrote to memory of 3032	2708	nsffihxc.exe	svchost.exe
PID 2708 wrote to memory of 3032	2708	nsffihxc.exe	svchost.exe
PID 2708 wrote to memory of 3032	2708	nsffihxc.exe	svchost.exe
PID 2708 wrote to memory of 3032	2708	nsffihxc.exe	svchost.exe
PID 2708 wrote to memory of 3032	2708	nsffihxc.exe	svchost.exe
PID 2708 wrote to memory of 3032	2708	nsffihxc.exe	svchost.exe
PID 2356 wrote to memory of 2476	2356	2024-06-24_9b9054b8fa3af489629b5d432c7293bb_mafia.exe	netsh.exe
PID 2356 wrote to memory of 2476	2356	2024-06-24_9b9054b8fa3af489629b5d432c7293bb_mafia.exe	netsh.exe
PID 2356 wrote to memory of 2476	2356	2024-06-24_9b9054b8fa3af489629b5d432c7293bb_mafia.exe	netsh.exe
PID 2356 wrote to memory of 2476	2356	2024-06-24_9b9054b8fa3af489629b5d432c7293bb_mafia.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\2024-06-24_9b9054b8fa3af489629b5d432c7293bb_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-24_9b9054b8fa3af489629b5d432c7293bb_mafia.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2356

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\sxkjuksl\
2⤵
PID:804

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nsffihxc.exe" C:\Windows\SysWOW64\sxkjuksl\
2⤵
PID:2212

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create sxkjuksl binPath= "C:\Windows\SysWOW64\sxkjuksl\nsffihxc.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-06-24_9b9054b8fa3af489629b5d432c7293bb_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:2852

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description sxkjuksl "wifi internet conection"
2⤵
- Launches sc.exe
PID:2560

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start sxkjuksl
2⤵
- Launches sc.exe
PID:2660

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
PID:2476

C:\Windows\SysWOW64\sxkjuksl\nsffihxc.exe
C:\Windows\SysWOW64\sxkjuksl\nsffihxc.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-06-24_9b9054b8fa3af489629b5d432c7293bb_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2708

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:3032

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

2

T1562

Disable or Modify System Firewall

1

T1562.004

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
11.9MB

MD5
a94e7fb39c94cf739f7f30e41b991656

SHA1
669698957263d55426b069855e1f3c7deb9130cc

SHA256
1104747a656d8b243d940cdbafaf67a19bc7e893a9cacffa5ee5348aa9679172

SHA512
d6284d359f2ef2819769d374901aec311c7c8a9be460081aa9ec08db0bd02436897fc4d018c26b4912e29d8da8b9e0e83435b0dbfb9d29e7cc774a5600cc2474

Download Submit
memory/2356-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2356-1-0x0000000000620000-0x0000000000720000-memory.dmp

Filesize
1024KB

Download
memory/2356-14-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2356-13-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/2708-11-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/3032-7-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3032-10-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3032-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3032-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3032-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads