tofsee | 3f7c6c00a626699f95045602c394bf895d6f8e5f1ae47e42875f9448e4b2cbcc

Analysis

max time kernel
149s
max time network
124s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
06-02-2025 16:33

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General

Target

2025-02-06_4dac4f3814cf7bd74dc29a03337a81d4_mafia.exe
Size

14.6MB
MD5

4dac4f3814cf7bd74dc29a03337a81d4
SHA1

e8902d85c42d8c464046ef57e80fd8c0418511b0
SHA256

3f7c6c00a626699f95045602c394bf895d6f8e5f1ae47e42875f9448e4b2cbcc
SHA512

7cf54c5d8c86438180b3377793b702f940144029858093ebb7662b5bb5174bcc09332b68d3409db526088ab2ee8f8b16671d303993d5a9adad58cfe952ef92cd
SSDEEP

49152:PqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP6:PqtYc3t

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\chmtnjsz = "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
864	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\chmtnjsz\ImagePath = "C:\\Windows\\SysWOW64\\chmtnjsz\\jsmrjidz.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2756	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2764	jsmrjidz.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2764 set thread context of 2756	2764	jsmrjidz.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2344	sc.exe
2872	sc.exe
1016	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jsmrjidz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-06_4dac4f3814cf7bd74dc29a03337a81d4_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	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 3064 wrote to memory of 2848	3064	2025-02-06_4dac4f3814cf7bd74dc29a03337a81d4_mafia.exe	30
PID 3064 wrote to memory of 2848	3064	2025-02-06_4dac4f3814cf7bd74dc29a03337a81d4_mafia.exe	30
PID 3064 wrote to memory of 2848	3064	2025-02-06_4dac4f3814cf7bd74dc29a03337a81d4_mafia.exe	30
PID 3064 wrote to memory of 2848	3064	2025-02-06_4dac4f3814cf7bd74dc29a03337a81d4_mafia.exe	30
PID 3064 wrote to memory of 2964	3064	2025-02-06_4dac4f3814cf7bd74dc29a03337a81d4_mafia.exe	32
PID 3064 wrote to memory of 2964	3064	2025-02-06_4dac4f3814cf7bd74dc29a03337a81d4_mafia.exe	32
PID 3064 wrote to memory of 2964	3064	2025-02-06_4dac4f3814cf7bd74dc29a03337a81d4_mafia.exe	32
PID 3064 wrote to memory of 2964	3064	2025-02-06_4dac4f3814cf7bd74dc29a03337a81d4_mafia.exe	32
PID 3064 wrote to memory of 2344	3064	2025-02-06_4dac4f3814cf7bd74dc29a03337a81d4_mafia.exe	34
PID 3064 wrote to memory of 2344	3064	2025-02-06_4dac4f3814cf7bd74dc29a03337a81d4_mafia.exe	34
PID 3064 wrote to memory of 2344	3064	2025-02-06_4dac4f3814cf7bd74dc29a03337a81d4_mafia.exe	34
PID 3064 wrote to memory of 2344	3064	2025-02-06_4dac4f3814cf7bd74dc29a03337a81d4_mafia.exe	34
PID 3064 wrote to memory of 2872	3064	2025-02-06_4dac4f3814cf7bd74dc29a03337a81d4_mafia.exe	36
PID 3064 wrote to memory of 2872	3064	2025-02-06_4dac4f3814cf7bd74dc29a03337a81d4_mafia.exe	36
PID 3064 wrote to memory of 2872	3064	2025-02-06_4dac4f3814cf7bd74dc29a03337a81d4_mafia.exe	36
PID 3064 wrote to memory of 2872	3064	2025-02-06_4dac4f3814cf7bd74dc29a03337a81d4_mafia.exe	36
PID 3064 wrote to memory of 1016	3064	2025-02-06_4dac4f3814cf7bd74dc29a03337a81d4_mafia.exe	38
PID 3064 wrote to memory of 1016	3064	2025-02-06_4dac4f3814cf7bd74dc29a03337a81d4_mafia.exe	38
PID 3064 wrote to memory of 1016	3064	2025-02-06_4dac4f3814cf7bd74dc29a03337a81d4_mafia.exe	38
PID 3064 wrote to memory of 1016	3064	2025-02-06_4dac4f3814cf7bd74dc29a03337a81d4_mafia.exe	38
PID 3064 wrote to memory of 864	3064	2025-02-06_4dac4f3814cf7bd74dc29a03337a81d4_mafia.exe	41
PID 3064 wrote to memory of 864	3064	2025-02-06_4dac4f3814cf7bd74dc29a03337a81d4_mafia.exe	41
PID 3064 wrote to memory of 864	3064	2025-02-06_4dac4f3814cf7bd74dc29a03337a81d4_mafia.exe	41
PID 3064 wrote to memory of 864	3064	2025-02-06_4dac4f3814cf7bd74dc29a03337a81d4_mafia.exe	41
PID 2764 wrote to memory of 2756	2764	jsmrjidz.exe	43
PID 2764 wrote to memory of 2756	2764	jsmrjidz.exe	43
PID 2764 wrote to memory of 2756	2764	jsmrjidz.exe	43
PID 2764 wrote to memory of 2756	2764	jsmrjidz.exe	43
PID 2764 wrote to memory of 2756	2764	jsmrjidz.exe	43
PID 2764 wrote to memory of 2756	2764	jsmrjidz.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-02-06_4dac4f3814cf7bd74dc29a03337a81d4_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-06_4dac4f3814cf7bd74dc29a03337a81d4_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3064
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\chmtnjsz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2848
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jsmrjidz.exe" C:\Windows\SysWOW64\chmtnjsz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2964
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create chmtnjsz binPath= "C:\Windows\SysWOW64\chmtnjsz\jsmrjidz.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-06_4dac4f3814cf7bd74dc29a03337a81d4_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2344
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description chmtnjsz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2872
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start chmtnjsz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1016
- 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:864

C:\Windows\SysWOW64\chmtnjsz\jsmrjidz.exe
C:\Windows\SysWOW64\chmtnjsz\jsmrjidz.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-06_4dac4f3814cf7bd74dc29a03337a81d4_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2764
- 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\jsmrjidz.exe

Filesize
11.3MB

MD5
7e811bc48a3afad994b009290155bd03

SHA1
d24e61a923e21d81f8e555ac0d7b3d7341177609

SHA256
3d2272265667eadf95c4998225f5ace4d9ef3afc0994de38319ac123c672a9df

SHA512
416378350a3546622bbc8b88095845016f58abe386c0a5288a8120ee938b96ea8353f488ea11f037e1f9ddde51fd795820a9835730bef66ff4ceee1d152b7d18

Download Submit
memory/2756-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2756-13-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2756-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2756-10-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2756-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2764-16-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/3064-1-0x0000000002F20000-0x0000000003020000-memory.dmp

Filesize
1024KB

Download
memory/3064-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3064-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/3064-8-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3064-7-0x0000000000400000-0x0000000002DC3000-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