tofsee | 6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6

Analysis

max time kernel
53s
max time network
62s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
05-01-2025 19:54

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe
Size

13.4MB
MD5

a43bf1a91d2d7d2c0350593078a95fe5
SHA1

685f6b436510395fee228855f2b3842266e0710c
SHA256

6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6
SHA512

43ae85a0230abc37a7909d512e93cfcf09c19602c9bc1064bec988cf08ee8f8b159a47daff55af3804cd335356a1c43a04e951875029a936215cfb95adb0cf9b
SSDEEP

1536:h0wSS5v4kCdJwumQA1tdc+2ogPM90svCW3jpNUB5X2CEjrpf9IwqdNdBgotfYn58:hSSePdJwhhy690sKqpyB8xpGwUptf6e

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
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
2792	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\utkonxwh\ImagePath = "C:\\Windows\\SysWOW64\\utkonxwh\\otdysebd.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2404	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2884	otdysebd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2884 set thread context of 2404	2884	otdysebd.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
2324	sc.exe
1476	sc.exe
2168	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	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	otdysebd.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2448 wrote to memory of 2956	2448	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	29
PID 2448 wrote to memory of 2956	2448	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	29
PID 2448 wrote to memory of 2956	2448	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	29
PID 2448 wrote to memory of 2956	2448	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	29
PID 2448 wrote to memory of 2952	2448	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	31
PID 2448 wrote to memory of 2952	2448	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	31
PID 2448 wrote to memory of 2952	2448	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	31
PID 2448 wrote to memory of 2952	2448	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	31
PID 2448 wrote to memory of 2324	2448	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	33
PID 2448 wrote to memory of 2324	2448	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	33
PID 2448 wrote to memory of 2324	2448	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	33
PID 2448 wrote to memory of 2324	2448	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	33
PID 2448 wrote to memory of 1476	2448	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	35
PID 2448 wrote to memory of 1476	2448	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	35
PID 2448 wrote to memory of 1476	2448	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	35
PID 2448 wrote to memory of 1476	2448	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	35
PID 2448 wrote to memory of 2168	2448	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	37
PID 2448 wrote to memory of 2168	2448	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	37
PID 2448 wrote to memory of 2168	2448	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	37
PID 2448 wrote to memory of 2168	2448	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	37
PID 2448 wrote to memory of 2792	2448	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	40
PID 2448 wrote to memory of 2792	2448	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	40
PID 2448 wrote to memory of 2792	2448	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	40
PID 2448 wrote to memory of 2792	2448	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	40
PID 2884 wrote to memory of 2404	2884	otdysebd.exe	42
PID 2884 wrote to memory of 2404	2884	otdysebd.exe	42
PID 2884 wrote to memory of 2404	2884	otdysebd.exe	42
PID 2884 wrote to memory of 2404	2884	otdysebd.exe	42
PID 2884 wrote to memory of 2404	2884	otdysebd.exe	42
PID 2884 wrote to memory of 2404	2884	otdysebd.exe	42

C:\Users\Admin\AppData\Local\Temp\6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe
"C:\Users\Admin\AppData\Local\Temp\6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2448
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\utkonxwh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2956
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\otdysebd.exe" C:\Windows\SysWOW64\utkonxwh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2952
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create utkonxwh binPath= "C:\Windows\SysWOW64\utkonxwh\otdysebd.exe /d\"C:\Users\Admin\AppData\Local\Temp\6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2324
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description utkonxwh "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1476
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start utkonxwh
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2168
- 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:2792

C:\Windows\SysWOW64\utkonxwh\otdysebd.exe
C:\Windows\SysWOW64\utkonxwh\otdysebd.exe /d"C:\Users\Admin\AppData\Local\Temp\6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2884
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2404

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

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
11.7MB

MD5
b43106585422ba0c75a7ca6cf9f395e2

SHA1
a35ed31e3565830cc36d7be7ee4c111effec62b1

SHA256
7c69063d30c81f884dc1ec742ed9c2f41c5d9b7e2f6afc9b6c9e5a523483b7c9

SHA512
4813bd667cb2f8a86d995073d57d07b4c88dcb3172cdf2939170a302ecaaa8c3fe1495b381c1ff80b48ed91299e87d995bd701256d4eba693e2d125e67c6ae0a

Download Submit
memory/2404-11-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2404-14-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2404-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2404-16-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2404-18-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2448-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2448-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2448-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2448-8-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2448-7-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/2448-1-0x0000000000520000-0x0000000000620000-memory.dmp

Filesize
1024KB

Download
memory/2884-17-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads