tofsee | 883771ee998fe89c30f4b5284c2854d27c56ff4d34c98e855f5b5a73a3e78457

General

Target

2024-06-18_992a29bba201120c4ae8af079d8eca14_mafia.exe
Size

12.7MB
MD5

992a29bba201120c4ae8af079d8eca14
SHA1

890ba9fff55e43d866f2f5a259805e04fd1b3625
SHA256

883771ee998fe89c30f4b5284c2854d27c56ff4d34c98e855f5b5a73a3e78457
SHA512

e7c48cce1f0a1a13de9f61c56250157e1350f487e1d17e675203e45b6ad209820c8b9980dc730f350746d07a0b5c2791404bfa783c74816af98b31355829fb2a
SSDEEP

6144:y+rWO2zeSPDjMXMH7Ll4aFpWVqIwUAP97GEwHrG2+e1x2:y+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
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

2512 netsh.exe

pid	process
2512	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\aolrwsmw\ImagePath = "C:\\Windows\\SysWOW64\\aolrwsmw\\knvvtrve.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2796 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

knvvtrve.exe

pid process

2548 knvvtrve.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

knvvtrve.exe

description pid process target process

PID 2548 set thread context of 2796 2548 knvvtrve.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

2616 sc.exe
2668 sc.exe
2808 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2796	svchost.exe

pid	process
2548	knvvtrve.exe

description	pid	process	target process
PID 2548 set thread context of 2796	2548	knvvtrve.exe	svchost.exe

pid	process
2616	sc.exe
2668	sc.exe
2808	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:

2024-06-18_992a29bba201120c4ae8af079d8eca14_mafia.exeknvvtrve.exe

description	pid	process	target process
PID 1088 wrote to memory of 2296	1088	2024-06-18_992a29bba201120c4ae8af079d8eca14_mafia.exe	cmd.exe
PID 1088 wrote to memory of 2296	1088	2024-06-18_992a29bba201120c4ae8af079d8eca14_mafia.exe	cmd.exe
PID 1088 wrote to memory of 2296	1088	2024-06-18_992a29bba201120c4ae8af079d8eca14_mafia.exe	cmd.exe
PID 1088 wrote to memory of 2296	1088	2024-06-18_992a29bba201120c4ae8af079d8eca14_mafia.exe	cmd.exe
PID 1088 wrote to memory of 2812	1088	2024-06-18_992a29bba201120c4ae8af079d8eca14_mafia.exe	cmd.exe
PID 1088 wrote to memory of 2812	1088	2024-06-18_992a29bba201120c4ae8af079d8eca14_mafia.exe	cmd.exe
PID 1088 wrote to memory of 2812	1088	2024-06-18_992a29bba201120c4ae8af079d8eca14_mafia.exe	cmd.exe
PID 1088 wrote to memory of 2812	1088	2024-06-18_992a29bba201120c4ae8af079d8eca14_mafia.exe	cmd.exe
PID 1088 wrote to memory of 2616	1088	2024-06-18_992a29bba201120c4ae8af079d8eca14_mafia.exe	sc.exe
PID 1088 wrote to memory of 2616	1088	2024-06-18_992a29bba201120c4ae8af079d8eca14_mafia.exe	sc.exe
PID 1088 wrote to memory of 2616	1088	2024-06-18_992a29bba201120c4ae8af079d8eca14_mafia.exe	sc.exe
PID 1088 wrote to memory of 2616	1088	2024-06-18_992a29bba201120c4ae8af079d8eca14_mafia.exe	sc.exe
PID 1088 wrote to memory of 2668	1088	2024-06-18_992a29bba201120c4ae8af079d8eca14_mafia.exe	sc.exe
PID 1088 wrote to memory of 2668	1088	2024-06-18_992a29bba201120c4ae8af079d8eca14_mafia.exe	sc.exe
PID 1088 wrote to memory of 2668	1088	2024-06-18_992a29bba201120c4ae8af079d8eca14_mafia.exe	sc.exe
PID 1088 wrote to memory of 2668	1088	2024-06-18_992a29bba201120c4ae8af079d8eca14_mafia.exe	sc.exe
PID 1088 wrote to memory of 2808	1088	2024-06-18_992a29bba201120c4ae8af079d8eca14_mafia.exe	sc.exe
PID 1088 wrote to memory of 2808	1088	2024-06-18_992a29bba201120c4ae8af079d8eca14_mafia.exe	sc.exe
PID 1088 wrote to memory of 2808	1088	2024-06-18_992a29bba201120c4ae8af079d8eca14_mafia.exe	sc.exe
PID 1088 wrote to memory of 2808	1088	2024-06-18_992a29bba201120c4ae8af079d8eca14_mafia.exe	sc.exe
PID 2548 wrote to memory of 2796	2548	knvvtrve.exe	svchost.exe
PID 2548 wrote to memory of 2796	2548	knvvtrve.exe	svchost.exe
PID 2548 wrote to memory of 2796	2548	knvvtrve.exe	svchost.exe
PID 2548 wrote to memory of 2796	2548	knvvtrve.exe	svchost.exe
PID 2548 wrote to memory of 2796	2548	knvvtrve.exe	svchost.exe
PID 2548 wrote to memory of 2796	2548	knvvtrve.exe	svchost.exe
PID 1088 wrote to memory of 2512	1088	2024-06-18_992a29bba201120c4ae8af079d8eca14_mafia.exe	netsh.exe
PID 1088 wrote to memory of 2512	1088	2024-06-18_992a29bba201120c4ae8af079d8eca14_mafia.exe	netsh.exe
PID 1088 wrote to memory of 2512	1088	2024-06-18_992a29bba201120c4ae8af079d8eca14_mafia.exe	netsh.exe
PID 1088 wrote to memory of 2512	1088	2024-06-18_992a29bba201120c4ae8af079d8eca14_mafia.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\2024-06-18_992a29bba201120c4ae8af079d8eca14_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-18_992a29bba201120c4ae8af079d8eca14_mafia.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1088

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\aolrwsmw\
2⤵
PID:2296

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\knvvtrve.exe" C:\Windows\SysWOW64\aolrwsmw\
2⤵
PID:2812

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create aolrwsmw binPath= "C:\Windows\SysWOW64\aolrwsmw\knvvtrve.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-06-18_992a29bba201120c4ae8af079d8eca14_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:2616

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description aolrwsmw "wifi internet conection"
2⤵
- Launches sc.exe
PID:2668

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start aolrwsmw
2⤵
- Launches sc.exe
PID:2808

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:2512

C:\Windows\SysWOW64\aolrwsmw\knvvtrve.exe
C:\Windows\SysWOW64\aolrwsmw\knvvtrve.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-06-18_992a29bba201120c4ae8af079d8eca14_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2548

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:2796

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

1

T1562

Disable or Modify System Firewall

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\knvvtrve.exe

Filesize
12.8MB

MD5
706931955c4d4aaadeacb5dbccb8c20f

SHA1
21cc0cdb718049d062eff810d34c47819b3d58dd

SHA256
47c4d01d127354a1220e5e32cf43bc194785c2966c515cefbed35061f780b208

SHA512
f96dd0b9f56559af4fcea9aebf8a300dad4dd6a722c4cd02b2eea2a972c82fb32f6d9d6142ba7f6b5558aaadb03088b12b02a0f1bd4ffba2455ad946538af4d1

Download Submit
memory/1088-1-0x0000000000630000-0x0000000000730000-memory.dmp

Filesize
1024KB

Download
memory/1088-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1088-13-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/1088-14-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2548-11-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/2796-7-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/2796-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2796-10-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/2796-15-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/2796-16-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads