tofsee | 1a190de18ea4ddfdf00ab2adf7512ca8a655c54dcf1587ceb3074a02f71fde0a

General

Target

2025-02-01_f5e8a3e5494dfcbafdcf2a18079fa6f6_mafia.exe
Size

13.7MB
MD5

f5e8a3e5494dfcbafdcf2a18079fa6f6
SHA1

2985d8cbcf0c7d4b5a92564c575e63076534f2ce
SHA256

1a190de18ea4ddfdf00ab2adf7512ca8a655c54dcf1587ceb3074a02f71fde0a
SHA512

25bebbcb1c3444773a0ff34a59e0ac377a7989d4ccd81a41ce0d7e97864cbe963247935997c388a3169adef8c19239e0189d8e2830361e7601507f2b41f7d498
SSDEEP

49152:9qE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP4:9qtYc3f

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
1844	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\nsmubnmf\ImagePath = "C:\\Windows\\SysWOW64\\nsmubnmf\\oopavwuc.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-1-5-21-2089655958-977706906-1981639424-1000\Control Panel\International\Geo\Nation	2025-02-01_f5e8a3e5494dfcbafdcf2a18079fa6f6_mafia.exe

Deletes itself 1 IoCs

pid	Process
1928	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3212	oopavwuc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3212 set thread context of 1928	3212	oopavwuc.exe	97

Launches sc.exe 3 IoCs

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

pid	Process
1892	sc.exe
4532	sc.exe
2044	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4080	2680	WerFault.exe	82
1748	3212	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_f5e8a3e5494dfcbafdcf2a18079fa6f6_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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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	oopavwuc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2680 wrote to memory of 4196	2680	2025-02-01_f5e8a3e5494dfcbafdcf2a18079fa6f6_mafia.exe	86
PID 2680 wrote to memory of 4196	2680	2025-02-01_f5e8a3e5494dfcbafdcf2a18079fa6f6_mafia.exe	86
PID 2680 wrote to memory of 4196	2680	2025-02-01_f5e8a3e5494dfcbafdcf2a18079fa6f6_mafia.exe	86
PID 2680 wrote to memory of 1368	2680	2025-02-01_f5e8a3e5494dfcbafdcf2a18079fa6f6_mafia.exe	88
PID 2680 wrote to memory of 1368	2680	2025-02-01_f5e8a3e5494dfcbafdcf2a18079fa6f6_mafia.exe	88
PID 2680 wrote to memory of 1368	2680	2025-02-01_f5e8a3e5494dfcbafdcf2a18079fa6f6_mafia.exe	88
PID 2680 wrote to memory of 4532	2680	2025-02-01_f5e8a3e5494dfcbafdcf2a18079fa6f6_mafia.exe	90
PID 2680 wrote to memory of 4532	2680	2025-02-01_f5e8a3e5494dfcbafdcf2a18079fa6f6_mafia.exe	90
PID 2680 wrote to memory of 4532	2680	2025-02-01_f5e8a3e5494dfcbafdcf2a18079fa6f6_mafia.exe	90
PID 2680 wrote to memory of 2044	2680	2025-02-01_f5e8a3e5494dfcbafdcf2a18079fa6f6_mafia.exe	92
PID 2680 wrote to memory of 2044	2680	2025-02-01_f5e8a3e5494dfcbafdcf2a18079fa6f6_mafia.exe	92
PID 2680 wrote to memory of 2044	2680	2025-02-01_f5e8a3e5494dfcbafdcf2a18079fa6f6_mafia.exe	92
PID 2680 wrote to memory of 1892	2680	2025-02-01_f5e8a3e5494dfcbafdcf2a18079fa6f6_mafia.exe	94
PID 2680 wrote to memory of 1892	2680	2025-02-01_f5e8a3e5494dfcbafdcf2a18079fa6f6_mafia.exe	94
PID 2680 wrote to memory of 1892	2680	2025-02-01_f5e8a3e5494dfcbafdcf2a18079fa6f6_mafia.exe	94
PID 3212 wrote to memory of 1928	3212	oopavwuc.exe	97
PID 3212 wrote to memory of 1928	3212	oopavwuc.exe	97
PID 3212 wrote to memory of 1928	3212	oopavwuc.exe	97
PID 3212 wrote to memory of 1928	3212	oopavwuc.exe	97
PID 3212 wrote to memory of 1928	3212	oopavwuc.exe	97
PID 2680 wrote to memory of 1844	2680	2025-02-01_f5e8a3e5494dfcbafdcf2a18079fa6f6_mafia.exe	99
PID 2680 wrote to memory of 1844	2680	2025-02-01_f5e8a3e5494dfcbafdcf2a18079fa6f6_mafia.exe	99
PID 2680 wrote to memory of 1844	2680	2025-02-01_f5e8a3e5494dfcbafdcf2a18079fa6f6_mafia.exe	99

C:\Users\Admin\AppData\Local\Temp\2025-02-01_f5e8a3e5494dfcbafdcf2a18079fa6f6_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_f5e8a3e5494dfcbafdcf2a18079fa6f6_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2680
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nsmubnmf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4196
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\oopavwuc.exe" C:\Windows\SysWOW64\nsmubnmf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1368
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nsmubnmf binPath= "C:\Windows\SysWOW64\nsmubnmf\oopavwuc.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_f5e8a3e5494dfcbafdcf2a18079fa6f6_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4532
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nsmubnmf "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2044
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nsmubnmf
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1892
- 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:1844
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2680 -s 1176
  2⤵
  - Program crash
  PID:4080

C:\Windows\SysWOW64\nsmubnmf\oopavwuc.exe
C:\Windows\SysWOW64\nsmubnmf\oopavwuc.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_f5e8a3e5494dfcbafdcf2a18079fa6f6_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3212
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1928
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3212 -s 512
  2⤵
  - Program crash
  PID:1748

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 3212 -ip 3212
1⤵
PID:4668

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 2680 -ip 2680
1⤵
PID:2104

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\oopavwuc.exe

Filesize
12.9MB

MD5
e5a12929f5d65bc993e6f64a4d90df2b

SHA1
81d489a42f9700a3c73b2f82998e0af94dd5aca4

SHA256
c385b1c37057ecd3e65d86f9841145c6583292d5b1977c47c98018a5f69c329c

SHA512
9b85e1cc70a36cea754711d9d05bbecc7a4abf9c5b8d941399d23d9648051bb8da7dbe834aec172596e95791c71dcabdeacfffaefaa08b2f1ca526401104f869

Download Submit
memory/1928-8-0x0000000000480000-0x0000000000495000-memory.dmp

Filesize
84KB

Download
memory/1928-14-0x0000000000480000-0x0000000000495000-memory.dmp

Filesize
84KB

Download
memory/1928-15-0x0000000000480000-0x0000000000495000-memory.dmp

Filesize
84KB

Download
memory/2680-1-0x0000000002F20000-0x0000000003020000-memory.dmp

Filesize
1024KB

Download
memory/2680-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2680-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2680-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2680-12-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2680-11-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/3212-10-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads