tofsee | 8dd3ef051e815d7e2e7bd153477614356dac6f34f6510a06e5a19a4f84a0fb9e

Analysis

max time kernel
147s
max time network
149s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
28/01/2024, 15:54

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General

Target

7d622157c4c9861a2bb4a1c5ffd85106.exe
Size

12.5MB
MD5

7d622157c4c9861a2bb4a1c5ffd85106
SHA1

8950e8c7908624eecf9c59f978446f1cafa2fded
SHA256

8dd3ef051e815d7e2e7bd153477614356dac6f34f6510a06e5a19a4f84a0fb9e
SHA512

38d6ba9613e13f07e91db844d856fc87da698dadacc0086a0b63e2ad365292fbbbad571099d0c70ce73f682df8fc46e1a33a5614d8010a400d4d2af05f2c8db7
SSDEEP

49152:BaBVqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqm:4

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

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

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\ggunhmbw = "0"	svchost.exe

Creates new service(s) 1 TTPs
persistence

Windows Service
T1543.003

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2688	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\ggunhmbw\ImagePath = "C:\\Windows\\SysWOW64\\ggunhmbw\\mvhnxsoe.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2572	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2544	mvhnxsoe.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2544 set thread context of 2572	2544	mvhnxsoe.exe	39

Launches sc.exe 3 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
2712	sc.exe
2696	sc.exe
2628	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1488 wrote to memory of 2344	1488	7d622157c4c9861a2bb4a1c5ffd85106.exe	28
PID 1488 wrote to memory of 2344	1488	7d622157c4c9861a2bb4a1c5ffd85106.exe	28
PID 1488 wrote to memory of 2344	1488	7d622157c4c9861a2bb4a1c5ffd85106.exe	28
PID 1488 wrote to memory of 2344	1488	7d622157c4c9861a2bb4a1c5ffd85106.exe	28
PID 1488 wrote to memory of 2784	1488	7d622157c4c9861a2bb4a1c5ffd85106.exe	30
PID 1488 wrote to memory of 2784	1488	7d622157c4c9861a2bb4a1c5ffd85106.exe	30
PID 1488 wrote to memory of 2784	1488	7d622157c4c9861a2bb4a1c5ffd85106.exe	30
PID 1488 wrote to memory of 2784	1488	7d622157c4c9861a2bb4a1c5ffd85106.exe	30
PID 1488 wrote to memory of 2628	1488	7d622157c4c9861a2bb4a1c5ffd85106.exe	32
PID 1488 wrote to memory of 2628	1488	7d622157c4c9861a2bb4a1c5ffd85106.exe	32
PID 1488 wrote to memory of 2628	1488	7d622157c4c9861a2bb4a1c5ffd85106.exe	32
PID 1488 wrote to memory of 2628	1488	7d622157c4c9861a2bb4a1c5ffd85106.exe	32
PID 1488 wrote to memory of 2712	1488	7d622157c4c9861a2bb4a1c5ffd85106.exe	34
PID 1488 wrote to memory of 2712	1488	7d622157c4c9861a2bb4a1c5ffd85106.exe	34
PID 1488 wrote to memory of 2712	1488	7d622157c4c9861a2bb4a1c5ffd85106.exe	34
PID 1488 wrote to memory of 2712	1488	7d622157c4c9861a2bb4a1c5ffd85106.exe	34
PID 1488 wrote to memory of 2696	1488	7d622157c4c9861a2bb4a1c5ffd85106.exe	37
PID 1488 wrote to memory of 2696	1488	7d622157c4c9861a2bb4a1c5ffd85106.exe	37
PID 1488 wrote to memory of 2696	1488	7d622157c4c9861a2bb4a1c5ffd85106.exe	37
PID 1488 wrote to memory of 2696	1488	7d622157c4c9861a2bb4a1c5ffd85106.exe	37
PID 1488 wrote to memory of 2688	1488	7d622157c4c9861a2bb4a1c5ffd85106.exe	41
PID 1488 wrote to memory of 2688	1488	7d622157c4c9861a2bb4a1c5ffd85106.exe	41
PID 1488 wrote to memory of 2688	1488	7d622157c4c9861a2bb4a1c5ffd85106.exe	41
PID 1488 wrote to memory of 2688	1488	7d622157c4c9861a2bb4a1c5ffd85106.exe	41
PID 2544 wrote to memory of 2572	2544	mvhnxsoe.exe	39
PID 2544 wrote to memory of 2572	2544	mvhnxsoe.exe	39
PID 2544 wrote to memory of 2572	2544	mvhnxsoe.exe	39
PID 2544 wrote to memory of 2572	2544	mvhnxsoe.exe	39
PID 2544 wrote to memory of 2572	2544	mvhnxsoe.exe	39
PID 2544 wrote to memory of 2572	2544	mvhnxsoe.exe	39

C:\Users\Admin\AppData\Local\Temp\7d622157c4c9861a2bb4a1c5ffd85106.exe
"C:\Users\Admin\AppData\Local\Temp\7d622157c4c9861a2bb4a1c5ffd85106.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1488
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ggunhmbw\
  2⤵
  PID:2344
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mvhnxsoe.exe" C:\Windows\SysWOW64\ggunhmbw\
  2⤵
  PID:2784
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ggunhmbw binPath= "C:\Windows\SysWOW64\ggunhmbw\mvhnxsoe.exe /d\"C:\Users\Admin\AppData\Local\Temp\7d622157c4c9861a2bb4a1c5ffd85106.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:2628
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ggunhmbw "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:2712
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ggunhmbw
  2⤵
  - Launches sc.exe
  PID:2696
- 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:2688

C:\Windows\SysWOW64\ggunhmbw\mvhnxsoe.exe
C:\Windows\SysWOW64\ggunhmbw\mvhnxsoe.exe /d"C:\Users\Admin\AppData\Local\Temp\7d622157c4c9861a2bb4a1c5ffd85106.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2544
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  PID:2572

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
133KB

MD5
0836d0911aebd95a40de163b6fb444ae

SHA1
e771b4eab25ef7468ad247c6899973b78fb402dc

SHA256
800a534a2f1509fd4102e59ab72fbe2840936636ba7aa9adc0bd35fd1ed8c988

SHA512
1afdc720776a6f0bd0711efb3b183d1eb288e7071a5dadf26efc72c1d5ac84fd9577ceeaafe93d074d6a738b9ae01630677ce553c11a316b115642782b6b36a4

Download Submit
C:\Windows\SysWOW64\ggunhmbw\mvhnxsoe.exe

Filesize
1.4MB

MD5
69a86c567498f06dd42e40d5e5c8232e

SHA1
82631314c4e6daf083daed8fee7ef1654ca9b737

SHA256
05bb8e140f81df616446ee8db5b03edeb6cab517224882fce17098dc07876d55

SHA512
bbb489768f5210b6a8f518fa302547a45bb0a5a2a79297e689b3467516f1a881f7fade1224e54cc157f5d38c76380baf99d2149fa2bdbbd838524c72603b54b1

Download Submit
memory/1488-2-0x00000000002B0000-0x00000000002C3000-memory.dmp

Filesize
76KB

Download
memory/1488-4-0x0000000000400000-0x0000000002CC0000-memory.dmp

Filesize
40.8MB

Download
memory/1488-1-0x0000000002D40000-0x0000000002E40000-memory.dmp

Filesize
1024KB

Download
memory/1488-10-0x0000000000400000-0x0000000002CC0000-memory.dmp

Filesize
40.8MB

Download
memory/2544-8-0x0000000002D30000-0x0000000002E30000-memory.dmp

Filesize
1024KB

Download
memory/2544-19-0x0000000000400000-0x0000000002CC0000-memory.dmp

Filesize
40.8MB

Download
memory/2544-17-0x0000000000400000-0x0000000002CC0000-memory.dmp

Filesize
40.8MB

Download
memory/2544-11-0x00000000002A0000-0x00000000002B3000-memory.dmp

Filesize
76KB

Download
memory/2572-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2572-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2572-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2572-9-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2572-20-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2572-21-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2572-22-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads