tofsee | d0db07b9932867d49ce538c4eda5355a7dd2e2c45793dc4f1f278b1539e902d0

General

Target

2025-02-03_497ebec33e6649e6ccbe753e3e1a779d_mafia.exe
Size

12.8MB
MD5

497ebec33e6649e6ccbe753e3e1a779d
SHA1

4061c414369e41657b46bced7b9cb839847fcd54
SHA256

d0db07b9932867d49ce538c4eda5355a7dd2e2c45793dc4f1f278b1539e902d0
SHA512

e1f0d7a8a0e07c9f1de9f24e145ea1644002f4e41e552b25ed8bc69f9c8880424ce659df107c9de13ec89e3cdd0adb4bd18c2b0439faf0443b5fbb52fc4eb970
SSDEEP

24576:NEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZJ:2fotT

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
1528	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\edakyazr\ImagePath = "C:\\Windows\\SysWOW64\\edakyazr\\ytxpfqsq.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-1-5-21-1412605595-2147700071-3468511006-1000\Control Panel\International\Geo\Nation	2025-02-03_497ebec33e6649e6ccbe753e3e1a779d_mafia.exe

Deletes itself 1 IoCs

pid	Process
1472	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4120	ytxpfqsq.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4120 set thread context of 1472	4120	ytxpfqsq.exe	106

Launches sc.exe 3 IoCs

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

pid	Process
4584	sc.exe
3420	sc.exe
4536	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
5056	3848	WerFault.exe	82
3176	4120	WerFault.exe	99

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	ytxpfqsq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-03_497ebec33e6649e6ccbe753e3e1a779d_mafia.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	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3848 wrote to memory of 3948	3848	2025-02-03_497ebec33e6649e6ccbe753e3e1a779d_mafia.exe	89
PID 3848 wrote to memory of 3948	3848	2025-02-03_497ebec33e6649e6ccbe753e3e1a779d_mafia.exe	89
PID 3848 wrote to memory of 3948	3848	2025-02-03_497ebec33e6649e6ccbe753e3e1a779d_mafia.exe	89
PID 3848 wrote to memory of 2564	3848	2025-02-03_497ebec33e6649e6ccbe753e3e1a779d_mafia.exe	91
PID 3848 wrote to memory of 2564	3848	2025-02-03_497ebec33e6649e6ccbe753e3e1a779d_mafia.exe	91
PID 3848 wrote to memory of 2564	3848	2025-02-03_497ebec33e6649e6ccbe753e3e1a779d_mafia.exe	91
PID 3848 wrote to memory of 4584	3848	2025-02-03_497ebec33e6649e6ccbe753e3e1a779d_mafia.exe	93
PID 3848 wrote to memory of 4584	3848	2025-02-03_497ebec33e6649e6ccbe753e3e1a779d_mafia.exe	93
PID 3848 wrote to memory of 4584	3848	2025-02-03_497ebec33e6649e6ccbe753e3e1a779d_mafia.exe	93
PID 3848 wrote to memory of 3420	3848	2025-02-03_497ebec33e6649e6ccbe753e3e1a779d_mafia.exe	95
PID 3848 wrote to memory of 3420	3848	2025-02-03_497ebec33e6649e6ccbe753e3e1a779d_mafia.exe	95
PID 3848 wrote to memory of 3420	3848	2025-02-03_497ebec33e6649e6ccbe753e3e1a779d_mafia.exe	95
PID 3848 wrote to memory of 4536	3848	2025-02-03_497ebec33e6649e6ccbe753e3e1a779d_mafia.exe	97
PID 3848 wrote to memory of 4536	3848	2025-02-03_497ebec33e6649e6ccbe753e3e1a779d_mafia.exe	97
PID 3848 wrote to memory of 4536	3848	2025-02-03_497ebec33e6649e6ccbe753e3e1a779d_mafia.exe	97
PID 3848 wrote to memory of 1528	3848	2025-02-03_497ebec33e6649e6ccbe753e3e1a779d_mafia.exe	100
PID 3848 wrote to memory of 1528	3848	2025-02-03_497ebec33e6649e6ccbe753e3e1a779d_mafia.exe	100
PID 3848 wrote to memory of 1528	3848	2025-02-03_497ebec33e6649e6ccbe753e3e1a779d_mafia.exe	100
PID 4120 wrote to memory of 1472	4120	ytxpfqsq.exe	106
PID 4120 wrote to memory of 1472	4120	ytxpfqsq.exe	106
PID 4120 wrote to memory of 1472	4120	ytxpfqsq.exe	106
PID 4120 wrote to memory of 1472	4120	ytxpfqsq.exe	106
PID 4120 wrote to memory of 1472	4120	ytxpfqsq.exe	106

C:\Users\Admin\AppData\Local\Temp\2025-02-03_497ebec33e6649e6ccbe753e3e1a779d_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-03_497ebec33e6649e6ccbe753e3e1a779d_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3848
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\edakyazr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3948
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ytxpfqsq.exe" C:\Windows\SysWOW64\edakyazr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2564
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create edakyazr binPath= "C:\Windows\SysWOW64\edakyazr\ytxpfqsq.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-03_497ebec33e6649e6ccbe753e3e1a779d_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4584
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description edakyazr "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3420
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start edakyazr
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4536
- 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:1528
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3848 -s 1044
  2⤵
  - Program crash
  PID:5056

C:\Windows\SysWOW64\edakyazr\ytxpfqsq.exe
C:\Windows\SysWOW64\edakyazr\ytxpfqsq.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-03_497ebec33e6649e6ccbe753e3e1a779d_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4120
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1472
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4120 -s 512
  2⤵
  - Program crash
  PID:3176

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3848 -ip 3848
1⤵
PID:2100

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 4120 -ip 4120
1⤵
PID:4416

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\ytxpfqsq.exe

Filesize
10.5MB

MD5
c5d0c556492f13149fab90864c010ed5

SHA1
81e54e00b6600829eedbae792446f3fd984dd949

SHA256
a8f6f232aee7b01740012706896f01d66e8482cbe56122671a6fab513c675219

SHA512
b79cc8db6f8a2236888eb7e6344a73e950ecdb4351f68c16720bd0c40916d7f11b551dbdcac1821f527297d43d92eb068075cd6f5e05b7a73fa409733f198b64

Download Submit
memory/1472-14-0x00000000007B0000-0x00000000007C5000-memory.dmp

Filesize
84KB

Download
memory/1472-17-0x00000000007B0000-0x00000000007C5000-memory.dmp

Filesize
84KB

Download
memory/1472-16-0x00000000007B0000-0x00000000007C5000-memory.dmp

Filesize
84KB

Download
memory/3848-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3848-8-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/3848-1-0x0000000000750000-0x0000000000850000-memory.dmp

Filesize
1024KB

Download
memory/3848-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3848-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3848-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/4120-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4120-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4120-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4120-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads