tofsee | 4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c

Analysis

max time kernel
149s
max time network
154s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
23/11/2024, 21:52

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General

Target

4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe
Size

10.4MB
MD5

154abc820d003af3ec2b3964df199e18
SHA1

0f6ac12b415c34330a1bc558457aae5600fb09f4
SHA256

4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c
SHA512

242bcc4358ca4d7872bbd517ab9879e354f97024b720cf77bf5e86f51af5c2799855c5581b384ffa22a45a9f95ba5a3e028fcb3ce4d68e79c6107f5ff1b2e779
SSDEEP

49152:ovqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqo:oL

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

quadoil.ru

lakeflex.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Tofsee family
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\kuxbpyyh = "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

pid	Process
2844	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\kuxbpyyh\ImagePath = "C:\\Windows\\SysWOW64\\kuxbpyyh\\schubwvk.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2016	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2304	schubwvk.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2304 set thread context of 2016	2304	schubwvk.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2024	sc.exe
2960	sc.exe
3060	sc.exe

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

System Information Discovery
T1082

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

description	ioc	Process
Key queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schubwvk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1736 wrote to memory of 2156	1736	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	30
PID 1736 wrote to memory of 2156	1736	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	30
PID 1736 wrote to memory of 2156	1736	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	30
PID 1736 wrote to memory of 2156	1736	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	30
PID 1736 wrote to memory of 2948	1736	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	32
PID 1736 wrote to memory of 2948	1736	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	32
PID 1736 wrote to memory of 2948	1736	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	32
PID 1736 wrote to memory of 2948	1736	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	32
PID 1736 wrote to memory of 2024	1736	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	34
PID 1736 wrote to memory of 2024	1736	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	34
PID 1736 wrote to memory of 2024	1736	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	34
PID 1736 wrote to memory of 2024	1736	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	34
PID 1736 wrote to memory of 2960	1736	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	36
PID 1736 wrote to memory of 2960	1736	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	36
PID 1736 wrote to memory of 2960	1736	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	36
PID 1736 wrote to memory of 2960	1736	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	36
PID 1736 wrote to memory of 3060	1736	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	38
PID 1736 wrote to memory of 3060	1736	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	38
PID 1736 wrote to memory of 3060	1736	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	38
PID 1736 wrote to memory of 3060	1736	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	38
PID 1736 wrote to memory of 2844	1736	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	41
PID 1736 wrote to memory of 2844	1736	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	41
PID 1736 wrote to memory of 2844	1736	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	41
PID 1736 wrote to memory of 2844	1736	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	41
PID 2304 wrote to memory of 2016	2304	schubwvk.exe	43
PID 2304 wrote to memory of 2016	2304	schubwvk.exe	43
PID 2304 wrote to memory of 2016	2304	schubwvk.exe	43
PID 2304 wrote to memory of 2016	2304	schubwvk.exe	43
PID 2304 wrote to memory of 2016	2304	schubwvk.exe	43
PID 2304 wrote to memory of 2016	2304	schubwvk.exe	43

C:\Users\Admin\AppData\Local\Temp\4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe
"C:\Users\Admin\AppData\Local\Temp\4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1736
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kuxbpyyh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2156
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\schubwvk.exe" C:\Windows\SysWOW64\kuxbpyyh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2948
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create kuxbpyyh binPath= "C:\Windows\SysWOW64\kuxbpyyh\schubwvk.exe /d\"C:\Users\Admin\AppData\Local\Temp\4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2024
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description kuxbpyyh "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2960
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start kuxbpyyh
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3060
- 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
  - System Location Discovery: System Language Discovery
  PID:2844

C:\Windows\SysWOW64\kuxbpyyh\schubwvk.exe
C:\Windows\SysWOW64\kuxbpyyh\schubwvk.exe /d"C:\Users\Admin\AppData\Local\Temp\4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2304
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2016

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

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

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
12.6MB

MD5
c679e69912fd6760bd603e4ef0a31180

SHA1
f6cce7ecfa0cdae56876363381483bcac21de8fb

SHA256
4bb18acc651e5a52922c706c8fd5f8d8e4ec0cdab8ab24883fa536184cf1981e

SHA512
34722d342255f331dbd2275da425c1c30cb430aa675ac592c821ec790df7f3fbad2efa6e54dc664bc5bae51e4b7bc4f07a0ca4a24ee017d832240d4f2fa8521e

Download Submit
memory/1736-8-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/1736-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1736-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/1736-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1736-9-0x0000000001750000-0x0000000001850000-memory.dmp

Filesize
1024KB

Download
memory/1736-1-0x0000000001750000-0x0000000001850000-memory.dmp

Filesize
1024KB

Download
memory/1736-7-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/2016-12-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2016-15-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2016-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2016-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2016-19-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2304-18-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads