tofsee | 1b67228067476adba101405a8a977dc25acb4080c0e2f49674aa412185fc5804

Analysis

max time kernel
145s
max time network
119s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
23-12-2024 19:56

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General

Target

5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe
Size

13.5MB
MD5

4561b81f98ef3192665759b2266f746a
SHA1

5e7efc91102e748bbeb903ae2f64aa212540a1a8
SHA256

5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8
SHA512

40bf6776e363f270922d71d67eda0297615fa8765dee88602fceeebda827abb28f923e31a4f0dec4d771af2fe1be3509179ab635ef64b0168cbb00d40f7dd120
SSDEEP

49152:zakyihKhKhKhKhKhKhKhKhKhKhKhKhKhKhKhKhKhKhKhKhKhKhKhKhKhKhKhKhKl:zaky

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

43.231.4.7

lazystax.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\nrcukcej = "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
2740	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\nrcukcej\ImagePath = "C:\\Windows\\SysWOW64\\nrcukcej\\orzzxvzi.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
3016	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2912	orzzxvzi.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2912 set thread context of 3016	2912	orzzxvzi.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2864	sc.exe
2492	sc.exe
2924	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 opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\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	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	orzzxvzi.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2084 wrote to memory of 2368	2084	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	30
PID 2084 wrote to memory of 2368	2084	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	30
PID 2084 wrote to memory of 2368	2084	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	30
PID 2084 wrote to memory of 2368	2084	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	30
PID 2084 wrote to memory of 2448	2084	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	32
PID 2084 wrote to memory of 2448	2084	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	32
PID 2084 wrote to memory of 2448	2084	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	32
PID 2084 wrote to memory of 2448	2084	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	32
PID 2084 wrote to memory of 2492	2084	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	34
PID 2084 wrote to memory of 2492	2084	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	34
PID 2084 wrote to memory of 2492	2084	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	34
PID 2084 wrote to memory of 2492	2084	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	34
PID 2084 wrote to memory of 2924	2084	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	36
PID 2084 wrote to memory of 2924	2084	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	36
PID 2084 wrote to memory of 2924	2084	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	36
PID 2084 wrote to memory of 2924	2084	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	36
PID 2084 wrote to memory of 2864	2084	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	38
PID 2084 wrote to memory of 2864	2084	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	38
PID 2084 wrote to memory of 2864	2084	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	38
PID 2084 wrote to memory of 2864	2084	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	38
PID 2084 wrote to memory of 2740	2084	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	41
PID 2084 wrote to memory of 2740	2084	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	41
PID 2084 wrote to memory of 2740	2084	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	41
PID 2084 wrote to memory of 2740	2084	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	41
PID 2912 wrote to memory of 3016	2912	orzzxvzi.exe	43
PID 2912 wrote to memory of 3016	2912	orzzxvzi.exe	43
PID 2912 wrote to memory of 3016	2912	orzzxvzi.exe	43
PID 2912 wrote to memory of 3016	2912	orzzxvzi.exe	43
PID 2912 wrote to memory of 3016	2912	orzzxvzi.exe	43
PID 2912 wrote to memory of 3016	2912	orzzxvzi.exe	43

C:\Users\Admin\AppData\Local\Temp\5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe
"C:\Users\Admin\AppData\Local\Temp\5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2084
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nrcukcej\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2368
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\orzzxvzi.exe" C:\Windows\SysWOW64\nrcukcej\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2448
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nrcukcej binPath= "C:\Windows\SysWOW64\nrcukcej\orzzxvzi.exe /d\"C:\Users\Admin\AppData\Local\Temp\5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2492
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nrcukcej "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2924
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nrcukcej
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2864
- 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:2740

C:\Windows\SysWOW64\nrcukcej\orzzxvzi.exe
C:\Windows\SysWOW64\nrcukcej\orzzxvzi.exe /d"C:\Users\Admin\AppData\Local\Temp\5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2912
- 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:3016

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\orzzxvzi.exe

Filesize
14.0MB

MD5
caca572fe1f74d59e99911417b642247

SHA1
a5aa313f9186154a2702b4789566ecf28991d6a2

SHA256
e6b3b93bc0e3b994eefd653a93e104248eb69d687ec156a73cd26bb1d5b727bc

SHA512
22d57d117fa1eceb1c4695f0399a4c64c725e839e89fefbb1f356ddfeb4d90f6d0e78bb70f62ec8855eaf30445930d19456c64549bbf98ac64d89c9925c3110b

Download Submit
memory/2084-11-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2084-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2084-2-0x0000000000230000-0x0000000000330000-memory.dmp

Filesize
1024KB

Download
memory/2084-9-0x0000000000400000-0x0000000000C42000-memory.dmp

Filesize
8.3MB

Download
memory/2084-0-0x0000000000400000-0x0000000000C42000-memory.dmp

Filesize
8.3MB

Download
memory/2084-10-0x0000000000230000-0x0000000000330000-memory.dmp

Filesize
1024KB

Download
memory/2912-7-0x0000000000400000-0x0000000000C42000-memory.dmp

Filesize
8.3MB

Download
memory/2912-20-0x0000000000400000-0x0000000000C42000-memory.dmp

Filesize
8.3MB

Download
memory/3016-13-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/3016-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/3016-16-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/3016-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3016-21-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads