tofsee | f887cefae06387746672a7f3e3ebf7ea7bc137f6af488eb9eb4438f7ebc5f28a

Analysis

max time kernel
146s
max time network
124s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
15-01-2025 19:08

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General

Target

2025-01-15_d7ef9529421e324f01552cb999958522_mafia.exe
Size

12.2MB
MD5

d7ef9529421e324f01552cb999958522
SHA1

6032398c9246014af54aa6ec4fd6980ff89f2f9d
SHA256

f887cefae06387746672a7f3e3ebf7ea7bc137f6af488eb9eb4438f7ebc5f28a
SHA512

0f110168c1c01e8df0d68e744f2327db173b18f03909c282bf7d8b374bb005275b568db91aeb5070941767762c2fb06e79c66cb62c039cfae0d8601b3e6d6fa4
SSDEEP

6144:TLQ1p/2p5e+D2jFHO+iZoy6u9FlfrXEz9NQNQNQNQNQNQNQNQNQNQNQNQNQNQNQd:oTYe+D2jFu+iZoUFhAz

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\jirjeipb = "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
2648	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\jirjeipb\ImagePath = "C:\\Windows\\SysWOW64\\jirjeipb\\llmxstrz.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2616	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2592	llmxstrz.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2592 set thread context of 2616	2592	llmxstrz.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2832	sc.exe
2600	sc.exe
2824	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	2025-01-15_d7ef9529421e324f01552cb999958522_mafia.exe
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	llmxstrz.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	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2716 wrote to memory of 2940	2716	2025-01-15_d7ef9529421e324f01552cb999958522_mafia.exe	30
PID 2716 wrote to memory of 2940	2716	2025-01-15_d7ef9529421e324f01552cb999958522_mafia.exe	30
PID 2716 wrote to memory of 2940	2716	2025-01-15_d7ef9529421e324f01552cb999958522_mafia.exe	30
PID 2716 wrote to memory of 2940	2716	2025-01-15_d7ef9529421e324f01552cb999958522_mafia.exe	30
PID 2716 wrote to memory of 2444	2716	2025-01-15_d7ef9529421e324f01552cb999958522_mafia.exe	32
PID 2716 wrote to memory of 2444	2716	2025-01-15_d7ef9529421e324f01552cb999958522_mafia.exe	32
PID 2716 wrote to memory of 2444	2716	2025-01-15_d7ef9529421e324f01552cb999958522_mafia.exe	32
PID 2716 wrote to memory of 2444	2716	2025-01-15_d7ef9529421e324f01552cb999958522_mafia.exe	32
PID 2716 wrote to memory of 2832	2716	2025-01-15_d7ef9529421e324f01552cb999958522_mafia.exe	34
PID 2716 wrote to memory of 2832	2716	2025-01-15_d7ef9529421e324f01552cb999958522_mafia.exe	34
PID 2716 wrote to memory of 2832	2716	2025-01-15_d7ef9529421e324f01552cb999958522_mafia.exe	34
PID 2716 wrote to memory of 2832	2716	2025-01-15_d7ef9529421e324f01552cb999958522_mafia.exe	34
PID 2716 wrote to memory of 2600	2716	2025-01-15_d7ef9529421e324f01552cb999958522_mafia.exe	36
PID 2716 wrote to memory of 2600	2716	2025-01-15_d7ef9529421e324f01552cb999958522_mafia.exe	36
PID 2716 wrote to memory of 2600	2716	2025-01-15_d7ef9529421e324f01552cb999958522_mafia.exe	36
PID 2716 wrote to memory of 2600	2716	2025-01-15_d7ef9529421e324f01552cb999958522_mafia.exe	36
PID 2716 wrote to memory of 2824	2716	2025-01-15_d7ef9529421e324f01552cb999958522_mafia.exe	38
PID 2716 wrote to memory of 2824	2716	2025-01-15_d7ef9529421e324f01552cb999958522_mafia.exe	38
PID 2716 wrote to memory of 2824	2716	2025-01-15_d7ef9529421e324f01552cb999958522_mafia.exe	38
PID 2716 wrote to memory of 2824	2716	2025-01-15_d7ef9529421e324f01552cb999958522_mafia.exe	38
PID 2716 wrote to memory of 2648	2716	2025-01-15_d7ef9529421e324f01552cb999958522_mafia.exe	41
PID 2716 wrote to memory of 2648	2716	2025-01-15_d7ef9529421e324f01552cb999958522_mafia.exe	41
PID 2716 wrote to memory of 2648	2716	2025-01-15_d7ef9529421e324f01552cb999958522_mafia.exe	41
PID 2716 wrote to memory of 2648	2716	2025-01-15_d7ef9529421e324f01552cb999958522_mafia.exe	41
PID 2592 wrote to memory of 2616	2592	llmxstrz.exe	43
PID 2592 wrote to memory of 2616	2592	llmxstrz.exe	43
PID 2592 wrote to memory of 2616	2592	llmxstrz.exe	43
PID 2592 wrote to memory of 2616	2592	llmxstrz.exe	43
PID 2592 wrote to memory of 2616	2592	llmxstrz.exe	43
PID 2592 wrote to memory of 2616	2592	llmxstrz.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-01-15_d7ef9529421e324f01552cb999958522_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-15_d7ef9529421e324f01552cb999958522_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2716
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jirjeipb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2940
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\llmxstrz.exe" C:\Windows\SysWOW64\jirjeipb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2444
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create jirjeipb binPath= "C:\Windows\SysWOW64\jirjeipb\llmxstrz.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-15_d7ef9529421e324f01552cb999958522_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2832
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description jirjeipb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2600
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start jirjeipb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2824
- 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:2648

C:\Windows\SysWOW64\jirjeipb\llmxstrz.exe
C:\Windows\SysWOW64\jirjeipb\llmxstrz.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-15_d7ef9529421e324f01552cb999958522_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2592
- 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:2616

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\llmxstrz.exe

Filesize
13.4MB

MD5
a68fa6002bb158c51a714e5e4b44653b

SHA1
ad1c04e3666c7ca8ed393d8c0dde39b1306651d1

SHA256
a6f35667704790d12241de7104b7c0302565391597e7ff8ed9f22766191a4638

SHA512
59b590998ffa93d71cf02969c7e432fdcc809c2a8dc499d0ecc3e4203a4888a48af09105d23a5e04c968736f4d5bdec941c9f085ea3bb82b600a7a95331de4e8

Download Submit
memory/2592-15-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2616-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2616-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2616-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2616-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2616-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2716-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2716-7-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2716-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2716-8-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2716-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2716-1-0x0000000000660000-0x0000000000760000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads