tofsee | 2d1d9d99ce675563001f04cb0e79dee6adf831112f050b693ab02ce412e0eb97

Analysis

max time kernel
156s
max time network
137s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
07-02-2025 20:56

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General

Target

2025-02-07_3448cf622f5023d7ef285b19651e7a64_mafia.exe
Size

14.6MB
MD5

3448cf622f5023d7ef285b19651e7a64
SHA1

224b6c872b778b2612f583dbafb70e68782b0803
SHA256

2d1d9d99ce675563001f04cb0e79dee6adf831112f050b693ab02ce412e0eb97
SHA512

f6ff9bd1e0032d01234308e55e64ec79887c32aacb8169e01f7ed2ea9e5c21b44da734a6b255197ccd54fbf40811a329f576f5da7a0b8a5a2c55ce6eb5df6540
SSDEEP

393216:wXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXH:

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\jkjijqeb = "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
1604	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\jkjijqeb\ImagePath = "C:\\Windows\\SysWOW64\\jkjijqeb\\ultrbwdr.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2344	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2548	ultrbwdr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2548 set thread context of 2344	2548	ultrbwdr.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2800	sc.exe
2636	sc.exe
2700	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-07_3448cf622f5023d7ef285b19651e7a64_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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ultrbwdr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2856 wrote to memory of 2644	2856	2025-02-07_3448cf622f5023d7ef285b19651e7a64_mafia.exe	30
PID 2856 wrote to memory of 2644	2856	2025-02-07_3448cf622f5023d7ef285b19651e7a64_mafia.exe	30
PID 2856 wrote to memory of 2644	2856	2025-02-07_3448cf622f5023d7ef285b19651e7a64_mafia.exe	30
PID 2856 wrote to memory of 2644	2856	2025-02-07_3448cf622f5023d7ef285b19651e7a64_mafia.exe	30
PID 2856 wrote to memory of 2912	2856	2025-02-07_3448cf622f5023d7ef285b19651e7a64_mafia.exe	32
PID 2856 wrote to memory of 2912	2856	2025-02-07_3448cf622f5023d7ef285b19651e7a64_mafia.exe	32
PID 2856 wrote to memory of 2912	2856	2025-02-07_3448cf622f5023d7ef285b19651e7a64_mafia.exe	32
PID 2856 wrote to memory of 2912	2856	2025-02-07_3448cf622f5023d7ef285b19651e7a64_mafia.exe	32
PID 2856 wrote to memory of 2800	2856	2025-02-07_3448cf622f5023d7ef285b19651e7a64_mafia.exe	34
PID 2856 wrote to memory of 2800	2856	2025-02-07_3448cf622f5023d7ef285b19651e7a64_mafia.exe	34
PID 2856 wrote to memory of 2800	2856	2025-02-07_3448cf622f5023d7ef285b19651e7a64_mafia.exe	34
PID 2856 wrote to memory of 2800	2856	2025-02-07_3448cf622f5023d7ef285b19651e7a64_mafia.exe	34
PID 2856 wrote to memory of 2636	2856	2025-02-07_3448cf622f5023d7ef285b19651e7a64_mafia.exe	36
PID 2856 wrote to memory of 2636	2856	2025-02-07_3448cf622f5023d7ef285b19651e7a64_mafia.exe	36
PID 2856 wrote to memory of 2636	2856	2025-02-07_3448cf622f5023d7ef285b19651e7a64_mafia.exe	36
PID 2856 wrote to memory of 2636	2856	2025-02-07_3448cf622f5023d7ef285b19651e7a64_mafia.exe	36
PID 2856 wrote to memory of 2700	2856	2025-02-07_3448cf622f5023d7ef285b19651e7a64_mafia.exe	38
PID 2856 wrote to memory of 2700	2856	2025-02-07_3448cf622f5023d7ef285b19651e7a64_mafia.exe	38
PID 2856 wrote to memory of 2700	2856	2025-02-07_3448cf622f5023d7ef285b19651e7a64_mafia.exe	38
PID 2856 wrote to memory of 2700	2856	2025-02-07_3448cf622f5023d7ef285b19651e7a64_mafia.exe	38
PID 2856 wrote to memory of 1604	2856	2025-02-07_3448cf622f5023d7ef285b19651e7a64_mafia.exe	40
PID 2856 wrote to memory of 1604	2856	2025-02-07_3448cf622f5023d7ef285b19651e7a64_mafia.exe	40
PID 2856 wrote to memory of 1604	2856	2025-02-07_3448cf622f5023d7ef285b19651e7a64_mafia.exe	40
PID 2856 wrote to memory of 1604	2856	2025-02-07_3448cf622f5023d7ef285b19651e7a64_mafia.exe	40
PID 2548 wrote to memory of 2344	2548	ultrbwdr.exe	43
PID 2548 wrote to memory of 2344	2548	ultrbwdr.exe	43
PID 2548 wrote to memory of 2344	2548	ultrbwdr.exe	43
PID 2548 wrote to memory of 2344	2548	ultrbwdr.exe	43
PID 2548 wrote to memory of 2344	2548	ultrbwdr.exe	43
PID 2548 wrote to memory of 2344	2548	ultrbwdr.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-02-07_3448cf622f5023d7ef285b19651e7a64_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-07_3448cf622f5023d7ef285b19651e7a64_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2856
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jkjijqeb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2644
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ultrbwdr.exe" C:\Windows\SysWOW64\jkjijqeb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2912
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create jkjijqeb binPath= "C:\Windows\SysWOW64\jkjijqeb\ultrbwdr.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-07_3448cf622f5023d7ef285b19651e7a64_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2800
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description jkjijqeb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2636
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start jkjijqeb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2700
- 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:1604

C:\Windows\SysWOW64\jkjijqeb\ultrbwdr.exe
C:\Windows\SysWOW64\jkjijqeb\ultrbwdr.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-07_3448cf622f5023d7ef285b19651e7a64_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2548
- 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:2344

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\ultrbwdr.exe

Filesize
11.7MB

MD5
89838d1ed8931fb089df89683adb4832

SHA1
43665c0e3f6b2d033908b89256426a69692d2395

SHA256
f0b1b1d0c51c81d48a8cd0c94b83f226cdcd39e932029793bf7a46128ae74f42

SHA512
e176b4c3e7a9a542566a4cc6a349c6e45a99f023d1034925cac1a04c9530bebe911025500654cbc14f95e2c2a71dbb932cf0e8aec553e292deb1e84da32d001b

Download Submit
memory/2344-12-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2344-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2344-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2344-19-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2344-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2548-16-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2856-7-0x0000000000600000-0x0000000000700000-memory.dmp

Filesize
1024KB

Download
memory/2856-8-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2856-1-0x0000000000600000-0x0000000000700000-memory.dmp

Filesize
1024KB

Download
memory/2856-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2856-6-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2856-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2856-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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