tofsee | 95829a10f0e9545aad05bdc05e8cc23a78789aec86a2e280e343721fd9ad0014

General

Target

8a464a50bc9eb0ccbcae6b9268bb6c30.exe
Size

12.2MB
MD5

8a464a50bc9eb0ccbcae6b9268bb6c30
SHA1

56971bd6026dc018efd0e32e44a4731b0b1c906f
SHA256

95829a10f0e9545aad05bdc05e8cc23a78789aec86a2e280e343721fd9ad0014
SHA512

5b3b034abd6d5304ffe774fac5a2255b4f57d926b197c9d0c2d07656db2bfc160e17b3b4d764a069eea6b06e343d003b032364f22f7749ee7061b1a05b29449a
SSDEEP

6144:X+rWO2zeSPDjMXMH7Ll4aFpWVqIwUAP97GEwHrG2+e1x2:X+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

456 netsh.exe

pid	process
456	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\wfpddxc\ImagePath = "C:\\Windows\\SysWOW64\\wfpddxc\\xgyxgswn.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

8a464a50bc9eb0ccbcae6b9268bb6c30.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	8a464a50bc9eb0ccbcae6b9268bb6c30.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2592 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

xgyxgswn.exe

pid process

1852 xgyxgswn.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

xgyxgswn.exe

description pid process target process

PID 1852 set thread context of 2592 1852 xgyxgswn.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

1572 sc.exe
4760 sc.exe
4320 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2592	svchost.exe

pid	process
1852	xgyxgswn.exe

description	pid	process	target process
PID 1852 set thread context of 2592	1852	xgyxgswn.exe	svchost.exe

pid	process
1572	sc.exe
4760	sc.exe
4320	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 23 IoCs

Processes:

8a464a50bc9eb0ccbcae6b9268bb6c30.exexgyxgswn.exe

description	pid	process	target process
PID 2364 wrote to memory of 1528	2364	8a464a50bc9eb0ccbcae6b9268bb6c30.exe	cmd.exe
PID 2364 wrote to memory of 1528	2364	8a464a50bc9eb0ccbcae6b9268bb6c30.exe	cmd.exe
PID 2364 wrote to memory of 1528	2364	8a464a50bc9eb0ccbcae6b9268bb6c30.exe	cmd.exe
PID 2364 wrote to memory of 1204	2364	8a464a50bc9eb0ccbcae6b9268bb6c30.exe	cmd.exe
PID 2364 wrote to memory of 1204	2364	8a464a50bc9eb0ccbcae6b9268bb6c30.exe	cmd.exe
PID 2364 wrote to memory of 1204	2364	8a464a50bc9eb0ccbcae6b9268bb6c30.exe	cmd.exe
PID 2364 wrote to memory of 1572	2364	8a464a50bc9eb0ccbcae6b9268bb6c30.exe	sc.exe
PID 2364 wrote to memory of 1572	2364	8a464a50bc9eb0ccbcae6b9268bb6c30.exe	sc.exe
PID 2364 wrote to memory of 1572	2364	8a464a50bc9eb0ccbcae6b9268bb6c30.exe	sc.exe
PID 2364 wrote to memory of 4760	2364	8a464a50bc9eb0ccbcae6b9268bb6c30.exe	sc.exe
PID 2364 wrote to memory of 4760	2364	8a464a50bc9eb0ccbcae6b9268bb6c30.exe	sc.exe
PID 2364 wrote to memory of 4760	2364	8a464a50bc9eb0ccbcae6b9268bb6c30.exe	sc.exe
PID 2364 wrote to memory of 4320	2364	8a464a50bc9eb0ccbcae6b9268bb6c30.exe	sc.exe
PID 2364 wrote to memory of 4320	2364	8a464a50bc9eb0ccbcae6b9268bb6c30.exe	sc.exe
PID 2364 wrote to memory of 4320	2364	8a464a50bc9eb0ccbcae6b9268bb6c30.exe	sc.exe
PID 2364 wrote to memory of 456	2364	8a464a50bc9eb0ccbcae6b9268bb6c30.exe	netsh.exe
PID 2364 wrote to memory of 456	2364	8a464a50bc9eb0ccbcae6b9268bb6c30.exe	netsh.exe
PID 2364 wrote to memory of 456	2364	8a464a50bc9eb0ccbcae6b9268bb6c30.exe	netsh.exe
PID 1852 wrote to memory of 2592	1852	xgyxgswn.exe	svchost.exe
PID 1852 wrote to memory of 2592	1852	xgyxgswn.exe	svchost.exe
PID 1852 wrote to memory of 2592	1852	xgyxgswn.exe	svchost.exe
PID 1852 wrote to memory of 2592	1852	xgyxgswn.exe	svchost.exe
PID 1852 wrote to memory of 2592	1852	xgyxgswn.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\8a464a50bc9eb0ccbcae6b9268bb6c30.exe
"C:\Users\Admin\AppData\Local\Temp\8a464a50bc9eb0ccbcae6b9268bb6c30.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2364

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wfpddxc\
2⤵
PID:1528

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xgyxgswn.exe" C:\Windows\SysWOW64\wfpddxc\
2⤵
PID:1204

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create wfpddxc binPath= "C:\Windows\SysWOW64\wfpddxc\xgyxgswn.exe /d\"C:\Users\Admin\AppData\Local\Temp\8a464a50bc9eb0ccbcae6b9268bb6c30.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:1572

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description wfpddxc "wifi internet conection"
2⤵
- Launches sc.exe
PID:4760

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start wfpddxc
2⤵
- Launches sc.exe
PID:4320

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:456

C:\Windows\SysWOW64\wfpddxc\xgyxgswn.exe
C:\Windows\SysWOW64\wfpddxc\xgyxgswn.exe /d"C:\Users\Admin\AppData\Local\Temp\8a464a50bc9eb0ccbcae6b9268bb6c30.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1852

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:2592

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\xgyxgswn.exe
Filesize
11.1MB

MD5
08cc9f24143b66a6057a3522947a159b

SHA1
400658f6a77d6fe55df6665a9a724ea36b7d6a26

SHA256
89c77757fd149278843af89c193101f9b21699db0ed25b5dd97893250e4bb5a1

SHA512
3ef63a823eb8c9cc7a2d1c2e4f8f0bd63153a1d2c27a091c91bca632499d4a83979bd13cafc957f29114ff5d3bba3ddb88b105f6c121bfb4ac5bacc20db4dd7c

Download Submit
memory/1852-9-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/1852-14-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/2364-1-0x0000000000640000-0x0000000000740000-memory.dmp

Filesize
1024KB

Download
memory/2364-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2364-7-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2364-6-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/2592-10-0x0000000000140000-0x0000000000155000-memory.dmp

Filesize
84KB

Download
memory/2592-13-0x0000000000140000-0x0000000000155000-memory.dmp

Filesize
84KB

Download
memory/2592-15-0x0000000000140000-0x0000000000155000-memory.dmp

Filesize
84KB

Download
memory/2592-17-0x0000000000140000-0x0000000000155000-memory.dmp

Filesize
84KB

Download
memory/2592-18-0x0000000000140000-0x0000000000155000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads