tofsee | 125121038f658715f0f002cd92bedf1bf318f8c211d64fa06d62e58d9c6d851e

Analysis

max time kernel
143s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
09-01-2025 18:56

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General

Target

2025-01-09_cc640048a903f18aef9ea0fdfb9b3920_mafia.exe
Size

13.3MB
MD5

cc640048a903f18aef9ea0fdfb9b3920
SHA1

cf2ffdbe0837aa34c6983027b7b2497d75a57d09
SHA256

125121038f658715f0f002cd92bedf1bf318f8c211d64fa06d62e58d9c6d851e
SHA512

e74d5fa348a8fa01a3a86e202e96aafcf65c51571e2be26ba011c2c3402b82dc18b54ec1a9524d2503c2a978d87e6bfa8f06f45a532e3de12d8656b4dfab5891
SSDEEP

49152:9qE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP:9qtYc3

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\yybdffnq = "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
2488	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\yybdffnq\ImagePath = "C:\\Windows\\SysWOW64\\yybdffnq\\kbxevuyc.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2868	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2952	kbxevuyc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2952 set thread context of 2868	2952	kbxevuyc.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2820	sc.exe
2740	sc.exe
2956	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\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	cmd.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	2025-01-09_cc640048a903f18aef9ea0fdfb9b3920_mafia.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	kbxevuyc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2476 wrote to memory of 2524	2476	2025-01-09_cc640048a903f18aef9ea0fdfb9b3920_mafia.exe	30
PID 2476 wrote to memory of 2524	2476	2025-01-09_cc640048a903f18aef9ea0fdfb9b3920_mafia.exe	30
PID 2476 wrote to memory of 2524	2476	2025-01-09_cc640048a903f18aef9ea0fdfb9b3920_mafia.exe	30
PID 2476 wrote to memory of 2524	2476	2025-01-09_cc640048a903f18aef9ea0fdfb9b3920_mafia.exe	30
PID 2476 wrote to memory of 2896	2476	2025-01-09_cc640048a903f18aef9ea0fdfb9b3920_mafia.exe	32
PID 2476 wrote to memory of 2896	2476	2025-01-09_cc640048a903f18aef9ea0fdfb9b3920_mafia.exe	32
PID 2476 wrote to memory of 2896	2476	2025-01-09_cc640048a903f18aef9ea0fdfb9b3920_mafia.exe	32
PID 2476 wrote to memory of 2896	2476	2025-01-09_cc640048a903f18aef9ea0fdfb9b3920_mafia.exe	32
PID 2476 wrote to memory of 2956	2476	2025-01-09_cc640048a903f18aef9ea0fdfb9b3920_mafia.exe	34
PID 2476 wrote to memory of 2956	2476	2025-01-09_cc640048a903f18aef9ea0fdfb9b3920_mafia.exe	34
PID 2476 wrote to memory of 2956	2476	2025-01-09_cc640048a903f18aef9ea0fdfb9b3920_mafia.exe	34
PID 2476 wrote to memory of 2956	2476	2025-01-09_cc640048a903f18aef9ea0fdfb9b3920_mafia.exe	34
PID 2476 wrote to memory of 2820	2476	2025-01-09_cc640048a903f18aef9ea0fdfb9b3920_mafia.exe	36
PID 2476 wrote to memory of 2820	2476	2025-01-09_cc640048a903f18aef9ea0fdfb9b3920_mafia.exe	36
PID 2476 wrote to memory of 2820	2476	2025-01-09_cc640048a903f18aef9ea0fdfb9b3920_mafia.exe	36
PID 2476 wrote to memory of 2820	2476	2025-01-09_cc640048a903f18aef9ea0fdfb9b3920_mafia.exe	36
PID 2476 wrote to memory of 2740	2476	2025-01-09_cc640048a903f18aef9ea0fdfb9b3920_mafia.exe	38
PID 2476 wrote to memory of 2740	2476	2025-01-09_cc640048a903f18aef9ea0fdfb9b3920_mafia.exe	38
PID 2476 wrote to memory of 2740	2476	2025-01-09_cc640048a903f18aef9ea0fdfb9b3920_mafia.exe	38
PID 2476 wrote to memory of 2740	2476	2025-01-09_cc640048a903f18aef9ea0fdfb9b3920_mafia.exe	38
PID 2476 wrote to memory of 2488	2476	2025-01-09_cc640048a903f18aef9ea0fdfb9b3920_mafia.exe	41
PID 2476 wrote to memory of 2488	2476	2025-01-09_cc640048a903f18aef9ea0fdfb9b3920_mafia.exe	41
PID 2476 wrote to memory of 2488	2476	2025-01-09_cc640048a903f18aef9ea0fdfb9b3920_mafia.exe	41
PID 2476 wrote to memory of 2488	2476	2025-01-09_cc640048a903f18aef9ea0fdfb9b3920_mafia.exe	41
PID 2952 wrote to memory of 2868	2952	kbxevuyc.exe	43
PID 2952 wrote to memory of 2868	2952	kbxevuyc.exe	43
PID 2952 wrote to memory of 2868	2952	kbxevuyc.exe	43
PID 2952 wrote to memory of 2868	2952	kbxevuyc.exe	43
PID 2952 wrote to memory of 2868	2952	kbxevuyc.exe	43
PID 2952 wrote to memory of 2868	2952	kbxevuyc.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-01-09_cc640048a903f18aef9ea0fdfb9b3920_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-09_cc640048a903f18aef9ea0fdfb9b3920_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2476
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yybdffnq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2524
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kbxevuyc.exe" C:\Windows\SysWOW64\yybdffnq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2896
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create yybdffnq binPath= "C:\Windows\SysWOW64\yybdffnq\kbxevuyc.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-09_cc640048a903f18aef9ea0fdfb9b3920_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2956
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description yybdffnq "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2820
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start yybdffnq
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2740
- 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:2488

C:\Windows\SysWOW64\yybdffnq\kbxevuyc.exe
C:\Windows\SysWOW64\yybdffnq\kbxevuyc.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-09_cc640048a903f18aef9ea0fdfb9b3920_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2952
- 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:2868

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\kbxevuyc.exe

Filesize
13.6MB

MD5
e3a32c1ce738d32fd2833ac693d0bdb5

SHA1
1ecb711108d3ad9a67df2d302eef34031f53f91e

SHA256
1b564e720d600b5b4ea45fe242f595c54e356da8f88c2e60c198636df27eab9a

SHA512
2d810b3845c1c3b84cbe02999561c984b076aa7c40406c6594d3828b8d95f9239fca74819bc863a91bab6c221b71299d56fc4cd10cdb8e62de42e18069940525

Download Submit
memory/2476-7-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/2476-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2476-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2476-8-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2476-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2476-1-0x0000000000290000-0x0000000000390000-memory.dmp

Filesize
1024KB

Download
memory/2868-14-0x0000000000090000-0x00000000000A5000-memory.dmp

Filesize
84KB

Download
memory/2868-17-0x0000000000090000-0x00000000000A5000-memory.dmp

Filesize
84KB

Download
memory/2868-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2868-11-0x0000000000090000-0x00000000000A5000-memory.dmp

Filesize
84KB

Download
memory/2868-18-0x0000000000090000-0x00000000000A5000-memory.dmp

Filesize
84KB

Download
memory/2952-15-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads