tofsee | b59aa4374a432455ceb42acd312ca1286148d06249b170cb7b8368d5b972d1a4

General

Target

2025-01-29_5c6ae23b64fb57a3ebe7ecda833515a2_mafia.exe
Size

11.4MB
MD5

5c6ae23b64fb57a3ebe7ecda833515a2
SHA1

6256587cfd31f1be773738ad6a4479f5e5a0917b
SHA256

b59aa4374a432455ceb42acd312ca1286148d06249b170cb7b8368d5b972d1a4
SHA512

1a26478d0b08a3b52247b1e24bbdf052ea7bf7e0e4e122f3f42fe93f335501b72942e88ad186901ca3cdc17d832265a6751b509baec0643be8f8fd5fdf345972
SSDEEP

24576:l6WdLQkyQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQd:kWdLQkH

Score

10^/10

tofsee defense_evasion discovery execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

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
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
532	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\ypocymb\ImagePath = "C:\\Windows\\SysWOW64\\ypocymb\\wjvslydn.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2211717155-842865201-3404093980-1000\Control Panel\International\Geo\Nation	2025-01-29_5c6ae23b64fb57a3ebe7ecda833515a2_mafia.exe

Deletes itself 1 IoCs

pid	Process
4372	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1432	wjvslydn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1432 set thread context of 4372	1432	wjvslydn.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
2044	sc.exe
1832	sc.exe
832	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1796	2852	WerFault.exe	81
1712	1432	WerFault.exe	94

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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-29_5c6ae23b64fb57a3ebe7ecda833515a2_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	wjvslydn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2852 wrote to memory of 3604	2852	2025-01-29_5c6ae23b64fb57a3ebe7ecda833515a2_mafia.exe	84
PID 2852 wrote to memory of 3604	2852	2025-01-29_5c6ae23b64fb57a3ebe7ecda833515a2_mafia.exe	84
PID 2852 wrote to memory of 3604	2852	2025-01-29_5c6ae23b64fb57a3ebe7ecda833515a2_mafia.exe	84
PID 2852 wrote to memory of 100	2852	2025-01-29_5c6ae23b64fb57a3ebe7ecda833515a2_mafia.exe	86
PID 2852 wrote to memory of 100	2852	2025-01-29_5c6ae23b64fb57a3ebe7ecda833515a2_mafia.exe	86
PID 2852 wrote to memory of 100	2852	2025-01-29_5c6ae23b64fb57a3ebe7ecda833515a2_mafia.exe	86
PID 2852 wrote to memory of 2044	2852	2025-01-29_5c6ae23b64fb57a3ebe7ecda833515a2_mafia.exe	88
PID 2852 wrote to memory of 2044	2852	2025-01-29_5c6ae23b64fb57a3ebe7ecda833515a2_mafia.exe	88
PID 2852 wrote to memory of 2044	2852	2025-01-29_5c6ae23b64fb57a3ebe7ecda833515a2_mafia.exe	88
PID 2852 wrote to memory of 1832	2852	2025-01-29_5c6ae23b64fb57a3ebe7ecda833515a2_mafia.exe	90
PID 2852 wrote to memory of 1832	2852	2025-01-29_5c6ae23b64fb57a3ebe7ecda833515a2_mafia.exe	90
PID 2852 wrote to memory of 1832	2852	2025-01-29_5c6ae23b64fb57a3ebe7ecda833515a2_mafia.exe	90
PID 2852 wrote to memory of 832	2852	2025-01-29_5c6ae23b64fb57a3ebe7ecda833515a2_mafia.exe	92
PID 2852 wrote to memory of 832	2852	2025-01-29_5c6ae23b64fb57a3ebe7ecda833515a2_mafia.exe	92
PID 2852 wrote to memory of 832	2852	2025-01-29_5c6ae23b64fb57a3ebe7ecda833515a2_mafia.exe	92
PID 2852 wrote to memory of 532	2852	2025-01-29_5c6ae23b64fb57a3ebe7ecda833515a2_mafia.exe	95
PID 2852 wrote to memory of 532	2852	2025-01-29_5c6ae23b64fb57a3ebe7ecda833515a2_mafia.exe	95
PID 2852 wrote to memory of 532	2852	2025-01-29_5c6ae23b64fb57a3ebe7ecda833515a2_mafia.exe	95
PID 1432 wrote to memory of 4372	1432	wjvslydn.exe	100
PID 1432 wrote to memory of 4372	1432	wjvslydn.exe	100
PID 1432 wrote to memory of 4372	1432	wjvslydn.exe	100
PID 1432 wrote to memory of 4372	1432	wjvslydn.exe	100
PID 1432 wrote to memory of 4372	1432	wjvslydn.exe	100

C:\Users\Admin\AppData\Local\Temp\2025-01-29_5c6ae23b64fb57a3ebe7ecda833515a2_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-29_5c6ae23b64fb57a3ebe7ecda833515a2_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2852
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ypocymb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3604
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wjvslydn.exe" C:\Windows\SysWOW64\ypocymb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:100
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ypocymb binPath= "C:\Windows\SysWOW64\ypocymb\wjvslydn.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-29_5c6ae23b64fb57a3ebe7ecda833515a2_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2044
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ypocymb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1832
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ypocymb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:832
- 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:532
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2852 -s 1184
  2⤵
  - Program crash
  PID:1796

C:\Windows\SysWOW64\ypocymb\wjvslydn.exe
C:\Windows\SysWOW64\ypocymb\wjvslydn.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-29_5c6ae23b64fb57a3ebe7ecda833515a2_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1432
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4372
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1432 -s 520
  2⤵
  - Program crash
  PID:1712

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2852 -ip 2852
1⤵
PID:3816

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1432 -ip 1432
1⤵
PID:4344

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\wjvslydn.exe

Filesize
11.0MB

MD5
082ee3a00c9207be624cd97b3bd63d95

SHA1
baab5060c9d5f8458460c555417d85d2fb020ac8

SHA256
8e64e9db16830b59f5b897cadca284602e8cea16d9ed6b4c9bee2d96b5a31099

SHA512
f818fc7304559926d63e5cd2b91df2f46c380a207ae195a1d520d17cc70b996f8f64f8e7c8b4e854b22a689ca91fbe03b9a63eb8228b545ebab7c79229edda8b

Download Submit
memory/1432-13-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/1432-11-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/1432-12-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/1432-18-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2852-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2852-2-0x00000000004A0000-0x00000000004B3000-memory.dmp

Filesize
76KB

Download
memory/2852-8-0x00000000004A0000-0x00000000004B3000-memory.dmp

Filesize
76KB

Download
memory/2852-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2852-7-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2852-1-0x00000000004E0000-0x00000000005E0000-memory.dmp

Filesize
1024KB

Download
memory/4372-14-0x0000000000F60000-0x0000000000F75000-memory.dmp

Filesize
84KB

Download
memory/4372-16-0x0000000000F60000-0x0000000000F75000-memory.dmp

Filesize
84KB

Download
memory/4372-17-0x0000000000F60000-0x0000000000F75000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads