tofsee | ae94bcdff4c4db9cd6aaa662d87f6b3bc9b1de7a786156307c42aad4f4d72334

General

Target

ae94bcdff4c4db9cd6aaa662d87f6b3bc9b1de7a786156307c42aad4f4d72334.exe
Size

10.6MB
MD5

48d331a22042af3c46f4a5c5852fd973
SHA1

144c9fbab74bfa069d42f895d84cd0573d5e5582
SHA256

ae94bcdff4c4db9cd6aaa662d87f6b3bc9b1de7a786156307c42aad4f4d72334
SHA512

64d36047c7e0d92054eac6b44eae05ada08e7fb5febbb5a2ae6b7a07ebdc9bd31ebd0391b490957362d1c3727986591bdcb0598111967c4b94e1b895f8b71026
SSDEEP

6144:CKNDMp7tMWhHwXO3kyvzC0+9XFWYW///////////////////////////////////:CKNDMpOmHKcRv+0u

Score

10^/10

tofsee evasion execution persistence trojan

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

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\txlvpuih = "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

2752 netsh.exe

pid	process
2752	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\txlvpuih\ImagePath = "C:\\Windows\\SysWOW64\\txlvpuih\\vcfdeeui.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2508 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

vcfdeeui.exe

pid process

2720 vcfdeeui.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

vcfdeeui.exe

description pid process target process

PID 2720 set thread context of 2508 2720 vcfdeeui.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

2680 sc.exe
2120 sc.exe
2524 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2508	svchost.exe

pid	process
2720	vcfdeeui.exe

description	pid	process	target process
PID 2720 set thread context of 2508	2720	vcfdeeui.exe	svchost.exe

pid	process
2680	sc.exe
2120	sc.exe
2524	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

ae94bcdff4c4db9cd6aaa662d87f6b3bc9b1de7a786156307c42aad4f4d72334.exevcfdeeui.exe

description	pid	process	target process
PID 2084 wrote to memory of 2148	2084	ae94bcdff4c4db9cd6aaa662d87f6b3bc9b1de7a786156307c42aad4f4d72334.exe	cmd.exe
PID 2084 wrote to memory of 2148	2084	ae94bcdff4c4db9cd6aaa662d87f6b3bc9b1de7a786156307c42aad4f4d72334.exe	cmd.exe
PID 2084 wrote to memory of 2148	2084	ae94bcdff4c4db9cd6aaa662d87f6b3bc9b1de7a786156307c42aad4f4d72334.exe	cmd.exe
PID 2084 wrote to memory of 2148	2084	ae94bcdff4c4db9cd6aaa662d87f6b3bc9b1de7a786156307c42aad4f4d72334.exe	cmd.exe
PID 2084 wrote to memory of 2692	2084	ae94bcdff4c4db9cd6aaa662d87f6b3bc9b1de7a786156307c42aad4f4d72334.exe	cmd.exe
PID 2084 wrote to memory of 2692	2084	ae94bcdff4c4db9cd6aaa662d87f6b3bc9b1de7a786156307c42aad4f4d72334.exe	cmd.exe
PID 2084 wrote to memory of 2692	2084	ae94bcdff4c4db9cd6aaa662d87f6b3bc9b1de7a786156307c42aad4f4d72334.exe	cmd.exe
PID 2084 wrote to memory of 2692	2084	ae94bcdff4c4db9cd6aaa662d87f6b3bc9b1de7a786156307c42aad4f4d72334.exe	cmd.exe
PID 2084 wrote to memory of 2680	2084	ae94bcdff4c4db9cd6aaa662d87f6b3bc9b1de7a786156307c42aad4f4d72334.exe	sc.exe
PID 2084 wrote to memory of 2680	2084	ae94bcdff4c4db9cd6aaa662d87f6b3bc9b1de7a786156307c42aad4f4d72334.exe	sc.exe
PID 2084 wrote to memory of 2680	2084	ae94bcdff4c4db9cd6aaa662d87f6b3bc9b1de7a786156307c42aad4f4d72334.exe	sc.exe
PID 2084 wrote to memory of 2680	2084	ae94bcdff4c4db9cd6aaa662d87f6b3bc9b1de7a786156307c42aad4f4d72334.exe	sc.exe
PID 2084 wrote to memory of 2120	2084	ae94bcdff4c4db9cd6aaa662d87f6b3bc9b1de7a786156307c42aad4f4d72334.exe	sc.exe
PID 2084 wrote to memory of 2120	2084	ae94bcdff4c4db9cd6aaa662d87f6b3bc9b1de7a786156307c42aad4f4d72334.exe	sc.exe
PID 2084 wrote to memory of 2120	2084	ae94bcdff4c4db9cd6aaa662d87f6b3bc9b1de7a786156307c42aad4f4d72334.exe	sc.exe
PID 2084 wrote to memory of 2120	2084	ae94bcdff4c4db9cd6aaa662d87f6b3bc9b1de7a786156307c42aad4f4d72334.exe	sc.exe
PID 2084 wrote to memory of 2524	2084	ae94bcdff4c4db9cd6aaa662d87f6b3bc9b1de7a786156307c42aad4f4d72334.exe	sc.exe
PID 2084 wrote to memory of 2524	2084	ae94bcdff4c4db9cd6aaa662d87f6b3bc9b1de7a786156307c42aad4f4d72334.exe	sc.exe
PID 2084 wrote to memory of 2524	2084	ae94bcdff4c4db9cd6aaa662d87f6b3bc9b1de7a786156307c42aad4f4d72334.exe	sc.exe
PID 2084 wrote to memory of 2524	2084	ae94bcdff4c4db9cd6aaa662d87f6b3bc9b1de7a786156307c42aad4f4d72334.exe	sc.exe
PID 2084 wrote to memory of 2752	2084	ae94bcdff4c4db9cd6aaa662d87f6b3bc9b1de7a786156307c42aad4f4d72334.exe	netsh.exe
PID 2084 wrote to memory of 2752	2084	ae94bcdff4c4db9cd6aaa662d87f6b3bc9b1de7a786156307c42aad4f4d72334.exe	netsh.exe
PID 2084 wrote to memory of 2752	2084	ae94bcdff4c4db9cd6aaa662d87f6b3bc9b1de7a786156307c42aad4f4d72334.exe	netsh.exe
PID 2084 wrote to memory of 2752	2084	ae94bcdff4c4db9cd6aaa662d87f6b3bc9b1de7a786156307c42aad4f4d72334.exe	netsh.exe
PID 2720 wrote to memory of 2508	2720	vcfdeeui.exe	svchost.exe
PID 2720 wrote to memory of 2508	2720	vcfdeeui.exe	svchost.exe
PID 2720 wrote to memory of 2508	2720	vcfdeeui.exe	svchost.exe
PID 2720 wrote to memory of 2508	2720	vcfdeeui.exe	svchost.exe
PID 2720 wrote to memory of 2508	2720	vcfdeeui.exe	svchost.exe
PID 2720 wrote to memory of 2508	2720	vcfdeeui.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\ae94bcdff4c4db9cd6aaa662d87f6b3bc9b1de7a786156307c42aad4f4d72334.exe
"C:\Users\Admin\AppData\Local\Temp\ae94bcdff4c4db9cd6aaa662d87f6b3bc9b1de7a786156307c42aad4f4d72334.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2084

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\txlvpuih\
2⤵
PID:2148

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vcfdeeui.exe" C:\Windows\SysWOW64\txlvpuih\
2⤵
PID:2692

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create txlvpuih binPath= "C:\Windows\SysWOW64\txlvpuih\vcfdeeui.exe /d\"C:\Users\Admin\AppData\Local\Temp\ae94bcdff4c4db9cd6aaa662d87f6b3bc9b1de7a786156307c42aad4f4d72334.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:2680

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description txlvpuih "wifi internet conection"
2⤵
- Launches sc.exe
PID:2120

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start txlvpuih
2⤵
- Launches sc.exe
PID:2524

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
PID:2752

C:\Windows\SysWOW64\txlvpuih\vcfdeeui.exe
C:\Windows\SysWOW64\txlvpuih\vcfdeeui.exe /d"C:\Users\Admin\AppData\Local\Temp\ae94bcdff4c4db9cd6aaa662d87f6b3bc9b1de7a786156307c42aad4f4d72334.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2720

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:2508

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

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

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\vcfdeeui.exe
Filesize
10.8MB

MD5
05b70e750bd93a116c2f5c5719984e89

SHA1
365b20d3b774d93192f29329212de972d336ada9

SHA256
ae39d6a578eebc9528b8e575b5e3005ab0765c781eeb6b9132eb757a8d540068

SHA512
d15914381fea31bdbe9e5c52b76936f4489316bfbc1270e3c5008a339f14c8551696bdbc8c122af31188a0002e26002ed42e5fa3a81e7cb2af671429860af92a

Download Submit
memory/2084-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2084-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2084-1-0x0000000000270000-0x0000000000370000-memory.dmp

Filesize
1024KB

Download
memory/2084-8-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download
memory/2084-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2508-10-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2508-13-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2508-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2508-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2508-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2720-15-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads