tofsee | afd0a3a9ccf343cb2715dee65320a086f810802051a81f39bca3838280cc96fa

Analysis

max time kernel
144s
max time network
117s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
01-02-2025 20:25

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General

Target

2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe
Size

12.9MB
MD5

911cc5e56fb7367da1798a04b9c370fb
SHA1

995550c02c0e2f934005d26ab82fde7da37fad1a
SHA256

afd0a3a9ccf343cb2715dee65320a086f810802051a81f39bca3838280cc96fa
SHA512

8e165e186b8520569c36c653c196e1526b8eaf27b9e5995611fff386d42a85ac33cc970efe87e48cb7e307f139d787ff5faab24337342fe6a51b0045e251d144
SSDEEP

6144:oLQ1p/2p5e+D2jFHO+iZoy6u9FlfrXEz9NQNQNQNQNQNQNQNQNQNQNQNQNQNQNQl:9TYe+D2jFu+iZoUFhAz

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\gffzstfw = "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
2772	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\gffzstfw\ImagePath = "C:\\Windows\\SysWOW64\\gffzstfw\\vyeynyjp.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2756	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2832	vyeynyjp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2832 set thread context of 2756	2832	vyeynyjp.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
2824	sc.exe
2744	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 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	vyeynyjp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2512 wrote to memory of 2148	2512	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	29
PID 2512 wrote to memory of 2148	2512	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	29
PID 2512 wrote to memory of 2148	2512	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	29
PID 2512 wrote to memory of 2148	2512	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	29
PID 2512 wrote to memory of 2408	2512	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	31
PID 2512 wrote to memory of 2408	2512	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	31
PID 2512 wrote to memory of 2408	2512	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	31
PID 2512 wrote to memory of 2408	2512	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	31
PID 2512 wrote to memory of 2824	2512	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	33
PID 2512 wrote to memory of 2824	2512	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	33
PID 2512 wrote to memory of 2824	2512	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	33
PID 2512 wrote to memory of 2824	2512	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	33
PID 2512 wrote to memory of 2744	2512	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	35
PID 2512 wrote to memory of 2744	2512	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	35
PID 2512 wrote to memory of 2744	2512	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	35
PID 2512 wrote to memory of 2744	2512	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	35
PID 2512 wrote to memory of 2956	2512	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	37
PID 2512 wrote to memory of 2956	2512	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	37
PID 2512 wrote to memory of 2956	2512	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	37
PID 2512 wrote to memory of 2956	2512	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	37
PID 2512 wrote to memory of 2772	2512	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	40
PID 2512 wrote to memory of 2772	2512	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	40
PID 2512 wrote to memory of 2772	2512	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	40
PID 2512 wrote to memory of 2772	2512	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	40
PID 2832 wrote to memory of 2756	2832	vyeynyjp.exe	42
PID 2832 wrote to memory of 2756	2832	vyeynyjp.exe	42
PID 2832 wrote to memory of 2756	2832	vyeynyjp.exe	42
PID 2832 wrote to memory of 2756	2832	vyeynyjp.exe	42
PID 2832 wrote to memory of 2756	2832	vyeynyjp.exe	42
PID 2832 wrote to memory of 2756	2832	vyeynyjp.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2512
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gffzstfw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2148
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vyeynyjp.exe" C:\Windows\SysWOW64\gffzstfw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2408
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create gffzstfw binPath= "C:\Windows\SysWOW64\gffzstfw\vyeynyjp.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2824
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description gffzstfw "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2744
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start gffzstfw
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2956
- 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:2772

C:\Windows\SysWOW64\gffzstfw\vyeynyjp.exe
C:\Windows\SysWOW64\gffzstfw\vyeynyjp.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2832
- 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:2756

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\vyeynyjp.exe

Filesize
15.0MB

MD5
a87a49bf7c19e5c90daec28fa5c21005

SHA1
a984aa1154620b802d3231156cdc8ee57ee9e783

SHA256
d868ffc675739605d6bad24d68664daac2799442fe1b86d9363d7847998ce38a

SHA512
5ade2784bba6e30ac25c41640d7f511651d06358e6fe8cb0c504e0d019db7d523ce6a91bcbf637125ef16488470eb68b839de22e3d6d270e1324fee905e554d2

Download Submit
memory/2512-7-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2512-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2512-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2512-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2512-8-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2512-1-0x0000000000690000-0x0000000000790000-memory.dmp

Filesize
1024KB

Download
memory/2756-14-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/2756-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2756-11-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/2756-17-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/2756-18-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/2832-15-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads