tofsee | 9c7030dfcb2bd5c4ef20d8b9280edf48189f3c0dd6dc08914a7e6a1c96690a35

Analysis

max time kernel
147s
max time network
132s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
03/02/2024, 23:32

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General

Target

8da541692d6b266d5917ed8c678b9cf6.exe
Size

11.7MB
MD5

8da541692d6b266d5917ed8c678b9cf6
SHA1

fe43e391f697fc87f12b9f5f10dd084d883b919c
SHA256

9c7030dfcb2bd5c4ef20d8b9280edf48189f3c0dd6dc08914a7e6a1c96690a35
SHA512

a1de4e825b86d2a11669a58bfebc08dce906ad75291405a4bb89b03359b20d73aaa5e083571f84a6e64a7373ec2a2a9b4abb828441a75ba1c1a86e3e2407f17a
SSDEEP

196608:5XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX:

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

43.231.4.6

lazystax.ru

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\egehvvgs = "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
2736	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\egehvvgs\ImagePath = "C:\\Windows\\SysWOW64\\egehvvgs\\rapkwvcm.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2164	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2660	rapkwvcm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2660 set thread context of 2164	2660	rapkwvcm.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2664	sc.exe
2572	sc.exe
2752	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 2628 wrote to memory of 2676	2628	8da541692d6b266d5917ed8c678b9cf6.exe	28
PID 2628 wrote to memory of 2676	2628	8da541692d6b266d5917ed8c678b9cf6.exe	28
PID 2628 wrote to memory of 2676	2628	8da541692d6b266d5917ed8c678b9cf6.exe	28
PID 2628 wrote to memory of 2676	2628	8da541692d6b266d5917ed8c678b9cf6.exe	28
PID 2628 wrote to memory of 2804	2628	8da541692d6b266d5917ed8c678b9cf6.exe	30
PID 2628 wrote to memory of 2804	2628	8da541692d6b266d5917ed8c678b9cf6.exe	30
PID 2628 wrote to memory of 2804	2628	8da541692d6b266d5917ed8c678b9cf6.exe	30
PID 2628 wrote to memory of 2804	2628	8da541692d6b266d5917ed8c678b9cf6.exe	30
PID 2628 wrote to memory of 2752	2628	8da541692d6b266d5917ed8c678b9cf6.exe	32
PID 2628 wrote to memory of 2752	2628	8da541692d6b266d5917ed8c678b9cf6.exe	32
PID 2628 wrote to memory of 2752	2628	8da541692d6b266d5917ed8c678b9cf6.exe	32
PID 2628 wrote to memory of 2752	2628	8da541692d6b266d5917ed8c678b9cf6.exe	32
PID 2628 wrote to memory of 2664	2628	8da541692d6b266d5917ed8c678b9cf6.exe	34
PID 2628 wrote to memory of 2664	2628	8da541692d6b266d5917ed8c678b9cf6.exe	34
PID 2628 wrote to memory of 2664	2628	8da541692d6b266d5917ed8c678b9cf6.exe	34
PID 2628 wrote to memory of 2664	2628	8da541692d6b266d5917ed8c678b9cf6.exe	34
PID 2628 wrote to memory of 2572	2628	8da541692d6b266d5917ed8c678b9cf6.exe	36
PID 2628 wrote to memory of 2572	2628	8da541692d6b266d5917ed8c678b9cf6.exe	36
PID 2628 wrote to memory of 2572	2628	8da541692d6b266d5917ed8c678b9cf6.exe	36
PID 2628 wrote to memory of 2572	2628	8da541692d6b266d5917ed8c678b9cf6.exe	36
PID 2628 wrote to memory of 2736	2628	8da541692d6b266d5917ed8c678b9cf6.exe	39
PID 2628 wrote to memory of 2736	2628	8da541692d6b266d5917ed8c678b9cf6.exe	39
PID 2628 wrote to memory of 2736	2628	8da541692d6b266d5917ed8c678b9cf6.exe	39
PID 2628 wrote to memory of 2736	2628	8da541692d6b266d5917ed8c678b9cf6.exe	39
PID 2660 wrote to memory of 2164	2660	rapkwvcm.exe	41
PID 2660 wrote to memory of 2164	2660	rapkwvcm.exe	41
PID 2660 wrote to memory of 2164	2660	rapkwvcm.exe	41
PID 2660 wrote to memory of 2164	2660	rapkwvcm.exe	41
PID 2660 wrote to memory of 2164	2660	rapkwvcm.exe	41
PID 2660 wrote to memory of 2164	2660	rapkwvcm.exe	41

C:\Users\Admin\AppData\Local\Temp\8da541692d6b266d5917ed8c678b9cf6.exe
"C:\Users\Admin\AppData\Local\Temp\8da541692d6b266d5917ed8c678b9cf6.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2628
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\egehvvgs\
  2⤵
  PID:2676
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rapkwvcm.exe" C:\Windows\SysWOW64\egehvvgs\
  2⤵
  PID:2804
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create egehvvgs binPath= "C:\Windows\SysWOW64\egehvvgs\rapkwvcm.exe /d\"C:\Users\Admin\AppData\Local\Temp\8da541692d6b266d5917ed8c678b9cf6.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:2752
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description egehvvgs "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:2664
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start egehvvgs
  2⤵
  - Launches sc.exe
  PID:2572
- 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:2736

C:\Windows\SysWOW64\egehvvgs\rapkwvcm.exe
C:\Windows\SysWOW64\egehvvgs\rapkwvcm.exe /d"C:\Users\Admin\AppData\Local\Temp\8da541692d6b266d5917ed8c678b9cf6.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2660
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  PID:2164

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\rapkwvcm.exe

Filesize
8.4MB

MD5
1b3200ae75927411903bc35aafd088b7

SHA1
4ee80c1704bfc1a2a7dde8f9ebdf5281c4c54c01

SHA256
87d5b70d06390750ecfd34dd620d94d919eb922045ec51f2b33f27accf3659b8

SHA512
d21d9b5fa9ba98f3c51443051023e7dffecca48b335fabf3e7b6cc2127ec399766673d0e2e19587221e8965fbb308f4da85ba62b7efb1068b069d411ae0e94d8

Download Submit
C:\Windows\SysWOW64\egehvvgs\rapkwvcm.exe

Filesize
11.1MB

MD5
e076776e507b9c8122ae278aa7177aea

SHA1
15094b51c83e7ab2328f51d1ea5c6d261ad344c8

SHA256
85fcad5bb2eb4c39efa3eb565a7d6cf7cd3b961056f6796c7b39c7a46b5b234e

SHA512
2f5a08289c277a79756a8cea76e54fbb1dc61c9b4908957f5d21b522dd5188b3b2d4e8f5c1a23a5fd16ddbd9c3a5dd17d474fa90debd8c63e63cb4155706f756

Download Submit
memory/2164-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2164-19-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2164-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2164-21-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2164-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2164-20-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2164-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2628-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2628-7-0x0000000000400000-0x00000000008EA000-memory.dmp

Filesize
4.9MB

Download
memory/2628-4-0x0000000000400000-0x00000000008EA000-memory.dmp

Filesize
4.9MB

Download
memory/2628-1-0x0000000000D50000-0x0000000000E50000-memory.dmp

Filesize
1024KB

Download
memory/2660-9-0x0000000000980000-0x0000000000A80000-memory.dmp

Filesize
1024KB

Download
memory/2660-16-0x0000000000400000-0x00000000008EA000-memory.dmp

Filesize
4.9MB

Download
memory/2660-10-0x0000000000400000-0x00000000008EA000-memory.dmp

Filesize
4.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads