tofsee | 3cb05dfb57db0c2a6788d4c2d1d705e1d685179773ce5f1ccb26ff7bb717a44e

General

Target

2025-02-12_8dd4ca713a364ccb7a12c7085c04d2e1_mafia.exe
Size

15.0MB
MD5

8dd4ca713a364ccb7a12c7085c04d2e1
SHA1

70fb52eba5c8c96df2a2ab572b386354445c2d0a
SHA256

3cb05dfb57db0c2a6788d4c2d1d705e1d685179773ce5f1ccb26ff7bb717a44e
SHA512

caed42e1e52b1fc8ac09a43ef6254fd7a7e77d8e4d7da5d155e73f4a9ae80e85ab306a31f096a933ece5329141ff7b6a48301dc4e24a82a72392fa0354e1408c
SSDEEP

24576:NEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZG:2fotw

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
62	3620	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
4240	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\kqpqauxh\ImagePath = "C:\\Windows\\SysWOW64\\kqpqauxh\\cezfylv.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-1-5-21-1318997816-2171176372-1451785247-1000\Control Panel\International\Geo\Nation	2025-02-12_8dd4ca713a364ccb7a12c7085c04d2e1_mafia.exe

Deletes itself 1 IoCs

pid	Process
3640	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3608	cezfylv.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3608 set thread context of 3640	3608	cezfylv.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
2888	sc.exe
4652	sc.exe
208	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
244	1540	WerFault.exe	86
2308	3608	WerFault.exe	97

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	cezfylv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-12_8dd4ca713a364ccb7a12c7085c04d2e1_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	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	MicrosoftEdgeUpdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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
2192	MicrosoftEdgeUpdate.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1540 wrote to memory of 768	1540	2025-02-12_8dd4ca713a364ccb7a12c7085c04d2e1_mafia.exe	87
PID 1540 wrote to memory of 768	1540	2025-02-12_8dd4ca713a364ccb7a12c7085c04d2e1_mafia.exe	87
PID 1540 wrote to memory of 768	1540	2025-02-12_8dd4ca713a364ccb7a12c7085c04d2e1_mafia.exe	87
PID 1540 wrote to memory of 1568	1540	2025-02-12_8dd4ca713a364ccb7a12c7085c04d2e1_mafia.exe	89
PID 1540 wrote to memory of 1568	1540	2025-02-12_8dd4ca713a364ccb7a12c7085c04d2e1_mafia.exe	89
PID 1540 wrote to memory of 1568	1540	2025-02-12_8dd4ca713a364ccb7a12c7085c04d2e1_mafia.exe	89
PID 1540 wrote to memory of 2888	1540	2025-02-12_8dd4ca713a364ccb7a12c7085c04d2e1_mafia.exe	91
PID 1540 wrote to memory of 2888	1540	2025-02-12_8dd4ca713a364ccb7a12c7085c04d2e1_mafia.exe	91
PID 1540 wrote to memory of 2888	1540	2025-02-12_8dd4ca713a364ccb7a12c7085c04d2e1_mafia.exe	91
PID 1540 wrote to memory of 4652	1540	2025-02-12_8dd4ca713a364ccb7a12c7085c04d2e1_mafia.exe	93
PID 1540 wrote to memory of 4652	1540	2025-02-12_8dd4ca713a364ccb7a12c7085c04d2e1_mafia.exe	93
PID 1540 wrote to memory of 4652	1540	2025-02-12_8dd4ca713a364ccb7a12c7085c04d2e1_mafia.exe	93
PID 1540 wrote to memory of 208	1540	2025-02-12_8dd4ca713a364ccb7a12c7085c04d2e1_mafia.exe	95
PID 1540 wrote to memory of 208	1540	2025-02-12_8dd4ca713a364ccb7a12c7085c04d2e1_mafia.exe	95
PID 1540 wrote to memory of 208	1540	2025-02-12_8dd4ca713a364ccb7a12c7085c04d2e1_mafia.exe	95
PID 1540 wrote to memory of 4240	1540	2025-02-12_8dd4ca713a364ccb7a12c7085c04d2e1_mafia.exe	98
PID 1540 wrote to memory of 4240	1540	2025-02-12_8dd4ca713a364ccb7a12c7085c04d2e1_mafia.exe	98
PID 1540 wrote to memory of 4240	1540	2025-02-12_8dd4ca713a364ccb7a12c7085c04d2e1_mafia.exe	98
PID 3608 wrote to memory of 3640	3608	cezfylv.exe	103
PID 3608 wrote to memory of 3640	3608	cezfylv.exe	103
PID 3608 wrote to memory of 3640	3608	cezfylv.exe	103
PID 3608 wrote to memory of 3640	3608	cezfylv.exe	103
PID 3608 wrote to memory of 3640	3608	cezfylv.exe	103

C:\Users\Admin\AppData\Local\Temp\2025-02-12_8dd4ca713a364ccb7a12c7085c04d2e1_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-12_8dd4ca713a364ccb7a12c7085c04d2e1_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1540
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kqpqauxh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:768
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cezfylv.exe" C:\Windows\SysWOW64\kqpqauxh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1568
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create kqpqauxh binPath= "C:\Windows\SysWOW64\kqpqauxh\cezfylv.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-12_8dd4ca713a364ccb7a12c7085c04d2e1_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2888
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description kqpqauxh "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4652
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start kqpqauxh
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:208
- 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:4240
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1540 -s 1232
  2⤵
  - Program crash
  PID:244

C:\Windows\SysWOW64\kqpqauxh\cezfylv.exe
C:\Windows\SysWOW64\kqpqauxh\cezfylv.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-12_8dd4ca713a364ccb7a12c7085c04d2e1_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3608
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3640
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3608 -s 512
  2⤵
  - Program crash
  PID:2308

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1540 -ip 1540
1⤵
PID:4064

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 3608 -ip 3608
1⤵
PID:3588

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIxIiBpbnN0YWxsZGF0ZXRpbWU9IjE3MzkyODMzNzEiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4Mzc1NDE5Mjc1MzAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1MTg1OTE4MTEyIi8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:2192

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

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Downloads

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

Filesize
12.7MB

MD5
891f1853ec56bc24cfb309eb48d5a8a3

SHA1
e697e7779f1a4dca6ab2bd7fcf6c70a85bce2fb9

SHA256
f60cd08809b39724a3ec230d59d8f31465c55446fd262cccecf8f6d6e92a66bc

SHA512
1575f0f8ffedbe78b379589e477799c340e75f5dbcaed140942fe46e90dd6d4ae7517552266757c185a7fa0b3b265ff1ee3651b133dfb025b4e2788ea959b18d

Download Submit
memory/1540-8-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/1540-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1540-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/1540-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1540-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1540-1-0x0000000000760000-0x0000000000860000-memory.dmp

Filesize
1024KB

Download
memory/3608-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3608-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3608-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3608-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3640-14-0x0000000000710000-0x0000000000725000-memory.dmp

Filesize
84KB

Download
memory/3640-16-0x0000000000710000-0x0000000000725000-memory.dmp

Filesize
84KB

Download
memory/3640-17-0x0000000000710000-0x0000000000725000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads