tofsee | 123df46c13877e2d95b175eb0dbcc81575e88ac10e977b9908d006b3d5112b6d

Analysis

max time kernel
144s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
26-01-2025 18:35

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General

Target

2025-01-26_a68c1be1027f4baebdbddb4f8e96237a_mafia.exe
Size

12.7MB
MD5

a68c1be1027f4baebdbddb4f8e96237a
SHA1

5f8a6c663aff8f3759cfba2cbccb607685b13ab1
SHA256

123df46c13877e2d95b175eb0dbcc81575e88ac10e977b9908d006b3d5112b6d
SHA512

b99adaeeffabb56637a5a5718ce348f9f6cb45c163d45bd08e1d18dc28b31a9446fe605b48edd94515e1d0500b0ed519cac7680630ea34d56084a964fe222195
SSDEEP

24576:GEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZB:/fot

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\gzxpxzcf = "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
3048	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\gzxpxzcf\ImagePath = "C:\\Windows\\SysWOW64\\gzxpxzcf\\fwecmhoc.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2540	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2636	fwecmhoc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2636 set thread context of 2540	2636	fwecmhoc.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2192	sc.exe
2300	sc.exe
2660	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-26_a68c1be1027f4baebdbddb4f8e96237a_mafia.exe
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	fwecmhoc.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

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1600 wrote to memory of 2728	1600	2025-01-26_a68c1be1027f4baebdbddb4f8e96237a_mafia.exe	30
PID 1600 wrote to memory of 2728	1600	2025-01-26_a68c1be1027f4baebdbddb4f8e96237a_mafia.exe	30
PID 1600 wrote to memory of 2728	1600	2025-01-26_a68c1be1027f4baebdbddb4f8e96237a_mafia.exe	30
PID 1600 wrote to memory of 2728	1600	2025-01-26_a68c1be1027f4baebdbddb4f8e96237a_mafia.exe	30
PID 1600 wrote to memory of 2676	1600	2025-01-26_a68c1be1027f4baebdbddb4f8e96237a_mafia.exe	32
PID 1600 wrote to memory of 2676	1600	2025-01-26_a68c1be1027f4baebdbddb4f8e96237a_mafia.exe	32
PID 1600 wrote to memory of 2676	1600	2025-01-26_a68c1be1027f4baebdbddb4f8e96237a_mafia.exe	32
PID 1600 wrote to memory of 2676	1600	2025-01-26_a68c1be1027f4baebdbddb4f8e96237a_mafia.exe	32
PID 1600 wrote to memory of 2192	1600	2025-01-26_a68c1be1027f4baebdbddb4f8e96237a_mafia.exe	34
PID 1600 wrote to memory of 2192	1600	2025-01-26_a68c1be1027f4baebdbddb4f8e96237a_mafia.exe	34
PID 1600 wrote to memory of 2192	1600	2025-01-26_a68c1be1027f4baebdbddb4f8e96237a_mafia.exe	34
PID 1600 wrote to memory of 2192	1600	2025-01-26_a68c1be1027f4baebdbddb4f8e96237a_mafia.exe	34
PID 1600 wrote to memory of 2300	1600	2025-01-26_a68c1be1027f4baebdbddb4f8e96237a_mafia.exe	36
PID 1600 wrote to memory of 2300	1600	2025-01-26_a68c1be1027f4baebdbddb4f8e96237a_mafia.exe	36
PID 1600 wrote to memory of 2300	1600	2025-01-26_a68c1be1027f4baebdbddb4f8e96237a_mafia.exe	36
PID 1600 wrote to memory of 2300	1600	2025-01-26_a68c1be1027f4baebdbddb4f8e96237a_mafia.exe	36
PID 1600 wrote to memory of 2660	1600	2025-01-26_a68c1be1027f4baebdbddb4f8e96237a_mafia.exe	38
PID 1600 wrote to memory of 2660	1600	2025-01-26_a68c1be1027f4baebdbddb4f8e96237a_mafia.exe	38
PID 1600 wrote to memory of 2660	1600	2025-01-26_a68c1be1027f4baebdbddb4f8e96237a_mafia.exe	38
PID 1600 wrote to memory of 2660	1600	2025-01-26_a68c1be1027f4baebdbddb4f8e96237a_mafia.exe	38
PID 2636 wrote to memory of 2540	2636	fwecmhoc.exe	41
PID 2636 wrote to memory of 2540	2636	fwecmhoc.exe	41
PID 2636 wrote to memory of 2540	2636	fwecmhoc.exe	41
PID 2636 wrote to memory of 2540	2636	fwecmhoc.exe	41
PID 2636 wrote to memory of 2540	2636	fwecmhoc.exe	41
PID 2636 wrote to memory of 2540	2636	fwecmhoc.exe	41
PID 1600 wrote to memory of 3048	1600	2025-01-26_a68c1be1027f4baebdbddb4f8e96237a_mafia.exe	42
PID 1600 wrote to memory of 3048	1600	2025-01-26_a68c1be1027f4baebdbddb4f8e96237a_mafia.exe	42
PID 1600 wrote to memory of 3048	1600	2025-01-26_a68c1be1027f4baebdbddb4f8e96237a_mafia.exe	42
PID 1600 wrote to memory of 3048	1600	2025-01-26_a68c1be1027f4baebdbddb4f8e96237a_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-01-26_a68c1be1027f4baebdbddb4f8e96237a_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-26_a68c1be1027f4baebdbddb4f8e96237a_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1600
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gzxpxzcf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2728
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fwecmhoc.exe" C:\Windows\SysWOW64\gzxpxzcf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2676
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create gzxpxzcf binPath= "C:\Windows\SysWOW64\gzxpxzcf\fwecmhoc.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-26_a68c1be1027f4baebdbddb4f8e96237a_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2192
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description gzxpxzcf "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2300
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start gzxpxzcf
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2660
- 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:3048

C:\Windows\SysWOW64\gzxpxzcf\fwecmhoc.exe
C:\Windows\SysWOW64\gzxpxzcf\fwecmhoc.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-26_a68c1be1027f4baebdbddb4f8e96237a_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2636
- 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:2540

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\fwecmhoc.exe

Filesize
10.8MB

MD5
88a7c7b29167c2fb20c212504a8aa0cc

SHA1
f13a7d0c45afce4d0812466f12aee1101ec17208

SHA256
56bb0f1d09f71a777c050f2bb65aa6b4302ccc243a0b96173c94aa5f645223cf

SHA512
6cf1a02a27d8bdf8c62fc1a5c87f4e8802ce1a1a91c30fd3ceb674c413f6e1cad2d0d21d987309a63a94fa60940c92aceb9c41f334f2b6a926b8cf789bfea7b6

Download Submit
memory/1600-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1600-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1600-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1600-14-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1600-1-0x0000000000590000-0x0000000000690000-memory.dmp

Filesize
1024KB

Download
memory/1600-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2540-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2540-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2540-8-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2540-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2540-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2636-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads