tofsee | 2d09b4467fcf47fe6e2f95ea3af4b5dffe0522d87c1cbbe85bbe71ba81d7f628

General

Target

977f60bb46c98f4fece2c317fc17c504.exe
Size

14.2MB
MD5

977f60bb46c98f4fece2c317fc17c504
SHA1

d246ad0209ed7041b0ee9004b36a4bad0513d876
SHA256

2d09b4467fcf47fe6e2f95ea3af4b5dffe0522d87c1cbbe85bbe71ba81d7f628
SHA512

4104422354bce5a50c08dda09529ddaef96fde520a84cf5f3c2ebfec794dfd1ba0c3ae0c7483ca6aef9c104f389db07793e05f0b1905a0fe7d03609c01677a39

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Creates new service(s) 1 TTPs
persistence

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

vxlmaiku.exe

pid process

996 vxlmaiku.exe
Modifies Windows Firewall 1 TTPs
evasion

Modify Existing Service
T1031
Suspicious use of SetThreadContext 1 IoCs

Processes:

vxlmaiku.exe

description pid process target process

PID 996 set thread context of 1164 996 vxlmaiku.exe svchost.exe
Launches sc.exe
Sc.exe is a Windows utlilty to control services on the system.

pid	process
996	vxlmaiku.exe

description	pid	process	target process
PID 996 set thread context of 1164	996	vxlmaiku.exe	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

977f60bb46c98f4fece2c317fc17c504.exevxlmaiku.exe

description	pid	process	target process
PID 4688 wrote to memory of 492	4688	977f60bb46c98f4fece2c317fc17c504.exe	cmd.exe
PID 4688 wrote to memory of 492	4688	977f60bb46c98f4fece2c317fc17c504.exe	cmd.exe
PID 4688 wrote to memory of 492	4688	977f60bb46c98f4fece2c317fc17c504.exe	cmd.exe
PID 4688 wrote to memory of 4108	4688	977f60bb46c98f4fece2c317fc17c504.exe	cmd.exe
PID 4688 wrote to memory of 4108	4688	977f60bb46c98f4fece2c317fc17c504.exe	cmd.exe
PID 4688 wrote to memory of 4108	4688	977f60bb46c98f4fece2c317fc17c504.exe	cmd.exe
PID 4688 wrote to memory of 3808	4688	977f60bb46c98f4fece2c317fc17c504.exe	sc.exe
PID 4688 wrote to memory of 3808	4688	977f60bb46c98f4fece2c317fc17c504.exe	sc.exe
PID 4688 wrote to memory of 3808	4688	977f60bb46c98f4fece2c317fc17c504.exe	sc.exe
PID 4688 wrote to memory of 4240	4688	977f60bb46c98f4fece2c317fc17c504.exe	sc.exe
PID 4688 wrote to memory of 4240	4688	977f60bb46c98f4fece2c317fc17c504.exe	sc.exe
PID 4688 wrote to memory of 4240	4688	977f60bb46c98f4fece2c317fc17c504.exe	sc.exe
PID 4688 wrote to memory of 636	4688	977f60bb46c98f4fece2c317fc17c504.exe	sc.exe
PID 4688 wrote to memory of 636	4688	977f60bb46c98f4fece2c317fc17c504.exe	sc.exe
PID 4688 wrote to memory of 636	4688	977f60bb46c98f4fece2c317fc17c504.exe	sc.exe
PID 4688 wrote to memory of 992	4688	977f60bb46c98f4fece2c317fc17c504.exe	netsh.exe
PID 4688 wrote to memory of 992	4688	977f60bb46c98f4fece2c317fc17c504.exe	netsh.exe
PID 4688 wrote to memory of 992	4688	977f60bb46c98f4fece2c317fc17c504.exe	netsh.exe
PID 996 wrote to memory of 1164	996	vxlmaiku.exe	svchost.exe
PID 996 wrote to memory of 1164	996	vxlmaiku.exe	svchost.exe
PID 996 wrote to memory of 1164	996	vxlmaiku.exe	svchost.exe
PID 996 wrote to memory of 1164	996	vxlmaiku.exe	svchost.exe
PID 996 wrote to memory of 1164	996	vxlmaiku.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\977f60bb46c98f4fece2c317fc17c504.exe
"C:\Users\Admin\AppData\Local\Temp\977f60bb46c98f4fece2c317fc17c504.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4688

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rzxpbtpk\
2⤵
PID:492

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vxlmaiku.exe" C:\Windows\SysWOW64\rzxpbtpk\
2⤵
PID:4108

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create rzxpbtpk binPath= "C:\Windows\SysWOW64\rzxpbtpk\vxlmaiku.exe /d\"C:\Users\Admin\AppData\Local\Temp\977f60bb46c98f4fece2c317fc17c504.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
PID:3808

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description rzxpbtpk "wifi internet conection"
2⤵
PID:4240

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start rzxpbtpk
2⤵
PID:636

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⤵
PID:992

C:\Windows\SysWOW64\rzxpbtpk\vxlmaiku.exe
C:\Windows\SysWOW64\rzxpbtpk\vxlmaiku.exe /d"C:\Users\Admin\AppData\Local\Temp\977f60bb46c98f4fece2c317fc17c504.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:996

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
PID:1164

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

New Service

1

T1050

Modify Existing Service

1

T1031

Privilege Escalation

New Service

1

T1050

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\vxlmaiku.exe
MD5
28234ae45dc5bc28da0f4294f21df217

SHA1
99ef252a789bf8f72428227ef647b3be72207d60

SHA256
5f29586f0fc6214e7100a5a0ec0fc4c5567441b7d8ded66e746f9016ead0a738

SHA512
c127e879ecc3f926f32a5828bc47bb3b901a04e8316506f495cadd65de5dbc7240e131d8feba98d566df4de41269714e50c3a9234256a361fe5fb22905f00748

Download Submit
C:\Windows\SysWOW64\rzxpbtpk\vxlmaiku.exe
MD5
28234ae45dc5bc28da0f4294f21df217

SHA1
99ef252a789bf8f72428227ef647b3be72207d60

SHA256
5f29586f0fc6214e7100a5a0ec0fc4c5567441b7d8ded66e746f9016ead0a738

SHA512
c127e879ecc3f926f32a5828bc47bb3b901a04e8316506f495cadd65de5dbc7240e131d8feba98d566df4de41269714e50c3a9234256a361fe5fb22905f00748

Download Submit
memory/492-2-0x0000000000000000-mapping.dmp

Download
memory/636-7-0x0000000000000000-mapping.dmp

Download
memory/992-8-0x0000000000000000-mapping.dmp

Download
memory/1164-10-0x0000000000DA0000-0x0000000000DB5000-memory.dmp

Filesize
84KB

Download
memory/1164-11-0x0000000000DA9A6B-mapping.dmp

Download
memory/3808-5-0x0000000000000000-mapping.dmp

Download
memory/4108-3-0x0000000000000000-mapping.dmp

Download
memory/4240-6-0x0000000000000000-mapping.dmp

Download

Analysis

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