tofsee | 7f3dd1155932d0c2fc3f916c86be0b5fd310f1cbcc313af19971e8fe90a1acbd

Analysis

max time kernel
149s
max time network
126s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
13/02/2025, 23:18

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General

Target

2025-02-13_4d509ac17c736d03d2f2e657d4088d12_mafia.exe
Size

13.6MB
MD5

4d509ac17c736d03d2f2e657d4088d12
SHA1

817a43bbbb578ce7648ecb58b91272a9850619ed
SHA256

7f3dd1155932d0c2fc3f916c86be0b5fd310f1cbcc313af19971e8fe90a1acbd
SHA512

d3c79b4242728bf2109d1f8e3b6ee6691a901d1ed9c39543cc09dee6121a58e33930944af379c9859bddd5d8651f4e7d6e4225b90f8b78f800523611760616a5
SSDEEP

393216:IXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXL:k

Score

10^/10

tofsee defense_evasion discovery 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

defense_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\brihhxiw = "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

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2904	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\brihhxiw\ImagePath = "C:\\Windows\\SysWOW64\\brihhxiw\\rtounak.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2356	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2924	rtounak.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2924 set thread context of 2356	2924	rtounak.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2920	sc.exe
2776	sc.exe
2344	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	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-13_4d509ac17c736d03d2f2e657d4088d12_mafia.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	rtounak.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2240 wrote to memory of 1172	2240	2025-02-13_4d509ac17c736d03d2f2e657d4088d12_mafia.exe	30
PID 2240 wrote to memory of 1172	2240	2025-02-13_4d509ac17c736d03d2f2e657d4088d12_mafia.exe	30
PID 2240 wrote to memory of 1172	2240	2025-02-13_4d509ac17c736d03d2f2e657d4088d12_mafia.exe	30
PID 2240 wrote to memory of 1172	2240	2025-02-13_4d509ac17c736d03d2f2e657d4088d12_mafia.exe	30
PID 2240 wrote to memory of 2888	2240	2025-02-13_4d509ac17c736d03d2f2e657d4088d12_mafia.exe	32
PID 2240 wrote to memory of 2888	2240	2025-02-13_4d509ac17c736d03d2f2e657d4088d12_mafia.exe	32
PID 2240 wrote to memory of 2888	2240	2025-02-13_4d509ac17c736d03d2f2e657d4088d12_mafia.exe	32
PID 2240 wrote to memory of 2888	2240	2025-02-13_4d509ac17c736d03d2f2e657d4088d12_mafia.exe	32
PID 2240 wrote to memory of 2344	2240	2025-02-13_4d509ac17c736d03d2f2e657d4088d12_mafia.exe	34
PID 2240 wrote to memory of 2344	2240	2025-02-13_4d509ac17c736d03d2f2e657d4088d12_mafia.exe	34
PID 2240 wrote to memory of 2344	2240	2025-02-13_4d509ac17c736d03d2f2e657d4088d12_mafia.exe	34
PID 2240 wrote to memory of 2344	2240	2025-02-13_4d509ac17c736d03d2f2e657d4088d12_mafia.exe	34
PID 2240 wrote to memory of 2920	2240	2025-02-13_4d509ac17c736d03d2f2e657d4088d12_mafia.exe	36
PID 2240 wrote to memory of 2920	2240	2025-02-13_4d509ac17c736d03d2f2e657d4088d12_mafia.exe	36
PID 2240 wrote to memory of 2920	2240	2025-02-13_4d509ac17c736d03d2f2e657d4088d12_mafia.exe	36
PID 2240 wrote to memory of 2920	2240	2025-02-13_4d509ac17c736d03d2f2e657d4088d12_mafia.exe	36
PID 2240 wrote to memory of 2776	2240	2025-02-13_4d509ac17c736d03d2f2e657d4088d12_mafia.exe	38
PID 2240 wrote to memory of 2776	2240	2025-02-13_4d509ac17c736d03d2f2e657d4088d12_mafia.exe	38
PID 2240 wrote to memory of 2776	2240	2025-02-13_4d509ac17c736d03d2f2e657d4088d12_mafia.exe	38
PID 2240 wrote to memory of 2776	2240	2025-02-13_4d509ac17c736d03d2f2e657d4088d12_mafia.exe	38
PID 2240 wrote to memory of 2904	2240	2025-02-13_4d509ac17c736d03d2f2e657d4088d12_mafia.exe	40
PID 2240 wrote to memory of 2904	2240	2025-02-13_4d509ac17c736d03d2f2e657d4088d12_mafia.exe	40
PID 2240 wrote to memory of 2904	2240	2025-02-13_4d509ac17c736d03d2f2e657d4088d12_mafia.exe	40
PID 2240 wrote to memory of 2904	2240	2025-02-13_4d509ac17c736d03d2f2e657d4088d12_mafia.exe	40
PID 2924 wrote to memory of 2356	2924	rtounak.exe	43
PID 2924 wrote to memory of 2356	2924	rtounak.exe	43
PID 2924 wrote to memory of 2356	2924	rtounak.exe	43
PID 2924 wrote to memory of 2356	2924	rtounak.exe	43
PID 2924 wrote to memory of 2356	2924	rtounak.exe	43
PID 2924 wrote to memory of 2356	2924	rtounak.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-02-13_4d509ac17c736d03d2f2e657d4088d12_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-13_4d509ac17c736d03d2f2e657d4088d12_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2240
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\brihhxiw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1172
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rtounak.exe" C:\Windows\SysWOW64\brihhxiw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2888
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create brihhxiw binPath= "C:\Windows\SysWOW64\brihhxiw\rtounak.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-13_4d509ac17c736d03d2f2e657d4088d12_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2344
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description brihhxiw "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2920
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start brihhxiw
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2776
- 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:2904

C:\Windows\SysWOW64\brihhxiw\rtounak.exe
C:\Windows\SysWOW64\brihhxiw\rtounak.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-13_4d509ac17c736d03d2f2e657d4088d12_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2924
- 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:2356

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\rtounak.exe

Filesize
13.3MB

MD5
dee6d6ea37be443fd482d7b116b805a1

SHA1
283f512079bf71e94ddf0be5e573a4f1f37ae555

SHA256
4f221aa38422ee9dd55c640365650c546c9655c317fe2ea3639277c124fab7f6

SHA512
adb31cc8626c40d83fd2b1362169d56c3ce82ee8fd02159e612150457a79b75148a4644491cb5b8ef4b96f30f9dd0a729f1765a0926e14b35711d07aa4ed7471

Download Submit
memory/2240-8-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2240-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2240-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2240-6-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2240-7-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2240-1-0x0000000000530000-0x0000000000630000-memory.dmp

Filesize
1024KB

Download
memory/2356-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2356-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2356-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2356-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2356-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2924-17-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads