tofsee | b4e5b6c2e6a59c349804cf87e5663bbcd50ac96aceaf926526d67398a1610fdb

General

Target

2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe
Size

12.8MB
MD5

294baf6362d4f49cfe0cea1ed29d6345
SHA1

eec8cc0feeb35395e2defd1d53005501d5c1c53b
SHA256

b4e5b6c2e6a59c349804cf87e5663bbcd50ac96aceaf926526d67398a1610fdb
SHA512

9c111d5b6835c36de1ac4411359df8f042b9c90b0b5b30af076225487b7d373f334fa83f5c05f91023f1b47bb09dc5f5bc2a6dbe372a1c6c1310eff2a3a913bd
SSDEEP

24576:mpomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttD:qoo9

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
2908	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\yaghggzr\ImagePath = "C:\\Windows\\SysWOW64\\yaghggzr\\nzymxhpj.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	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe

Deletes itself 1 IoCs

pid	Process
3524	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3404	nzymxhpj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3404 set thread context of 3524	3404	nzymxhpj.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
4148	sc.exe
3016	sc.exe
3440	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
4404	1588	WerFault.exe	83
1548	3404	WerFault.exe	96

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	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nzymxhpj.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1588 wrote to memory of 1808	1588	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	86
PID 1588 wrote to memory of 1808	1588	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	86
PID 1588 wrote to memory of 1808	1588	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	86
PID 1588 wrote to memory of 1752	1588	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	88
PID 1588 wrote to memory of 1752	1588	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	88
PID 1588 wrote to memory of 1752	1588	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	88
PID 1588 wrote to memory of 4148	1588	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	90
PID 1588 wrote to memory of 4148	1588	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	90
PID 1588 wrote to memory of 4148	1588	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	90
PID 1588 wrote to memory of 3016	1588	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	92
PID 1588 wrote to memory of 3016	1588	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	92
PID 1588 wrote to memory of 3016	1588	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	92
PID 1588 wrote to memory of 3440	1588	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	94
PID 1588 wrote to memory of 3440	1588	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	94
PID 1588 wrote to memory of 3440	1588	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	94
PID 1588 wrote to memory of 2908	1588	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	97
PID 1588 wrote to memory of 2908	1588	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	97
PID 1588 wrote to memory of 2908	1588	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	97
PID 3404 wrote to memory of 3524	3404	nzymxhpj.exe	103
PID 3404 wrote to memory of 3524	3404	nzymxhpj.exe	103
PID 3404 wrote to memory of 3524	3404	nzymxhpj.exe	103
PID 3404 wrote to memory of 3524	3404	nzymxhpj.exe	103
PID 3404 wrote to memory of 3524	3404	nzymxhpj.exe	103

C:\Users\Admin\AppData\Local\Temp\2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1588
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yaghggzr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1808
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nzymxhpj.exe" C:\Windows\SysWOW64\yaghggzr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1752
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create yaghggzr binPath= "C:\Windows\SysWOW64\yaghggzr\nzymxhpj.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4148
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description yaghggzr "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3016
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start yaghggzr
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3440
- 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:2908
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1588 -s 580
  2⤵
  - Program crash
  PID:4404

C:\Windows\SysWOW64\yaghggzr\nzymxhpj.exe
C:\Windows\SysWOW64\yaghggzr\nzymxhpj.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3404
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3524
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3404 -s 512
  2⤵
  - Program crash
  PID:1548

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 1588 -ip 1588
1⤵
PID:3168

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 3404 -ip 3404
1⤵
PID:868

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\nzymxhpj.exe

Filesize
13.4MB

MD5
b56e9d86f76e43da5835b9257c117d4c

SHA1
dca80d898b290ecf6566a1becbb56d52ee9f813d

SHA256
fab78ac4c57e0d287a5e452c4749054e3df30c3031976429f36bcaf552dcecaf

SHA512
2ca40f29f32c99c903dcea3d34338cfdf59cebbab3dc59f194c68691702571d53b548574a9251865d05f1280de61e0204eefbec3f1faf925a2276b82f9a09869

Download Submit
memory/1588-8-0x0000000000450000-0x0000000000463000-memory.dmp

Filesize
76KB

Download
memory/1588-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1588-2-0x0000000000450000-0x0000000000463000-memory.dmp

Filesize
76KB

Download
memory/1588-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1588-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1588-1-0x0000000000470000-0x0000000000570000-memory.dmp

Filesize
1024KB

Download
memory/3404-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3404-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3404-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3404-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3524-14-0x0000000000730000-0x0000000000745000-memory.dmp

Filesize
84KB

Download
memory/3524-16-0x0000000000730000-0x0000000000745000-memory.dmp

Filesize
84KB

Download
memory/3524-17-0x0000000000730000-0x0000000000745000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads