tofsee | 6442bf4f348a56a3b20351fd4d7280647c3b92ed9aaf4729c6f770ded7e064b5

General

Target

2025-02-07_f3a8de9d208f180d270bb8351469a487_mafia.exe
Size

11.8MB
MD5

f3a8de9d208f180d270bb8351469a487
SHA1

5bf129cf1c45f7333cecf0b73c504cba71733deb
SHA256

6442bf4f348a56a3b20351fd4d7280647c3b92ed9aaf4729c6f770ded7e064b5
SHA512

2fde428aa8a9c3de49bfe004b59a8ec7f5ce4183bad9472de0bf2969efc5bd76e94b930b867735382f717b31ee3ac78dcbbfa2cac9a300363957646904932d8f
SSDEEP

6144:qLQ1p/2p5e+D2jFHO+iZoy6u9FlfrXEz9NQNQNQNQNQNQNQNQNQNQNQNQNQNQNQN:LTYe+D2jFu+iZoUFhAz

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

Downloads MZ/PE file 1 IoCs

flow	pid	Process
46	4588	Process not Found

Modifies Windows Firewall 2 TTPs 1 IoCs

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
844	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\nipygyei\ImagePath = "C:\\Windows\\SysWOW64\\nipygyei\\tcwbtsnj.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-1-5-21-1639772215-809007892-4072230623-1000\Control Panel\International\Geo\Nation	2025-02-07_f3a8de9d208f180d270bb8351469a487_mafia.exe

Deletes itself 1 IoCs

pid	Process
3968	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4600	tcwbtsnj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4600 set thread context of 3968	4600	tcwbtsnj.exe	105

Launches sc.exe 3 IoCs

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

pid	Process
2516	sc.exe
3780	sc.exe
2340	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
2136	4740	WerFault.exe	85
4876	4600	WerFault.exe	99

System Location Discovery: System Language Discovery 1 TTPs 10 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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MicrosoftEdgeUpdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-07_f3a8de9d208f180d270bb8351469a487_mafia.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	tcwbtsnj.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
4148	MicrosoftEdgeUpdate.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4740 wrote to memory of 4496	4740	2025-02-07_f3a8de9d208f180d270bb8351469a487_mafia.exe	89
PID 4740 wrote to memory of 4496	4740	2025-02-07_f3a8de9d208f180d270bb8351469a487_mafia.exe	89
PID 4740 wrote to memory of 4496	4740	2025-02-07_f3a8de9d208f180d270bb8351469a487_mafia.exe	89
PID 4740 wrote to memory of 2160	4740	2025-02-07_f3a8de9d208f180d270bb8351469a487_mafia.exe	91
PID 4740 wrote to memory of 2160	4740	2025-02-07_f3a8de9d208f180d270bb8351469a487_mafia.exe	91
PID 4740 wrote to memory of 2160	4740	2025-02-07_f3a8de9d208f180d270bb8351469a487_mafia.exe	91
PID 4740 wrote to memory of 2516	4740	2025-02-07_f3a8de9d208f180d270bb8351469a487_mafia.exe	93
PID 4740 wrote to memory of 2516	4740	2025-02-07_f3a8de9d208f180d270bb8351469a487_mafia.exe	93
PID 4740 wrote to memory of 2516	4740	2025-02-07_f3a8de9d208f180d270bb8351469a487_mafia.exe	93
PID 4740 wrote to memory of 3780	4740	2025-02-07_f3a8de9d208f180d270bb8351469a487_mafia.exe	95
PID 4740 wrote to memory of 3780	4740	2025-02-07_f3a8de9d208f180d270bb8351469a487_mafia.exe	95
PID 4740 wrote to memory of 3780	4740	2025-02-07_f3a8de9d208f180d270bb8351469a487_mafia.exe	95
PID 4740 wrote to memory of 2340	4740	2025-02-07_f3a8de9d208f180d270bb8351469a487_mafia.exe	97
PID 4740 wrote to memory of 2340	4740	2025-02-07_f3a8de9d208f180d270bb8351469a487_mafia.exe	97
PID 4740 wrote to memory of 2340	4740	2025-02-07_f3a8de9d208f180d270bb8351469a487_mafia.exe	97
PID 4740 wrote to memory of 844	4740	2025-02-07_f3a8de9d208f180d270bb8351469a487_mafia.exe	100
PID 4740 wrote to memory of 844	4740	2025-02-07_f3a8de9d208f180d270bb8351469a487_mafia.exe	100
PID 4740 wrote to memory of 844	4740	2025-02-07_f3a8de9d208f180d270bb8351469a487_mafia.exe	100
PID 4600 wrote to memory of 3968	4600	tcwbtsnj.exe	105
PID 4600 wrote to memory of 3968	4600	tcwbtsnj.exe	105
PID 4600 wrote to memory of 3968	4600	tcwbtsnj.exe	105
PID 4600 wrote to memory of 3968	4600	tcwbtsnj.exe	105
PID 4600 wrote to memory of 3968	4600	tcwbtsnj.exe	105

C:\Users\Admin\AppData\Local\Temp\2025-02-07_f3a8de9d208f180d270bb8351469a487_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-07_f3a8de9d208f180d270bb8351469a487_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4740
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nipygyei\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4496
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tcwbtsnj.exe" C:\Windows\SysWOW64\nipygyei\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2160
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nipygyei binPath= "C:\Windows\SysWOW64\nipygyei\tcwbtsnj.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-07_f3a8de9d208f180d270bb8351469a487_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2516
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nipygyei "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3780
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nipygyei
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2340
- 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:844
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4740 -s 1032
  2⤵
  - Program crash
  PID:2136

C:\Windows\SysWOW64\nipygyei\tcwbtsnj.exe
C:\Windows\SysWOW64\nipygyei\tcwbtsnj.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-07_f3a8de9d208f180d270bb8351469a487_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4600
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3968
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4600 -s 512
  2⤵
  - Program crash
  PID:4876

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4740 -ip 4740
1⤵
PID:4952

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 4600 -ip 4600
1⤵
PID:3336

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIxIiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDY4ODkiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxOTM2NTgwOTAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1NDM0ODUwMTU3Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:4148

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

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
11.8MB

MD5
1d409c965e254107a045089dbf2b0d8f

SHA1
c89619dee43e57a5944c842965386873504ae938

SHA256
00b91e2cb77cd2a3625c86bce3a8dd20fc0a65a6214672148ec3a7ad0e563957

SHA512
3e140c906910dac64d7f0fd531e37a18e393df46d656c836b5a47a9b67ec6ca887044679b7ff31712fc65ce802939c4d6848a5c33b0ea589cf3607ccaa77c175

Download Submit
memory/3968-11-0x00000000004C0000-0x00000000004D5000-memory.dmp

Filesize
84KB

Download
memory/3968-18-0x00000000004C0000-0x00000000004D5000-memory.dmp

Filesize
84KB

Download
memory/3968-17-0x00000000004C0000-0x00000000004D5000-memory.dmp

Filesize
84KB

Download
memory/4600-9-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/4600-10-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/4600-8-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/4600-16-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/4740-1-0x0000000000860000-0x0000000000960000-memory.dmp

Filesize
1024KB

Download
memory/4740-13-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/4740-15-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4740-14-0x00000000006A0000-0x00000000006B3000-memory.dmp

Filesize
76KB

Download
memory/4740-2-0x00000000006A0000-0x00000000006B3000-memory.dmp

Filesize
76KB

Download
memory/4740-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads