tofsee | 99dae552798758e25e06f45fae3c525e50c77bedd0e67f07d9adbd2dc8d665bd

General

Target

2025-02-12_1bbf5e1e29e90ba98f8f2cc1d0b5b853_mafia.exe
Size

12.8MB
MD5

1bbf5e1e29e90ba98f8f2cc1d0b5b853
SHA1

577a625fcf21069ba307e4ba007caa73e724ad77
SHA256

99dae552798758e25e06f45fae3c525e50c77bedd0e67f07d9adbd2dc8d665bd
SHA512

cbab20e4a4550d6f4faa9d9ee989501ebf2d74c1f949f167e1780e0e0c4cf0eca0337fe96963e71c2b3611456c03f852cd1f6d563cf3586e12505696f63d6bd3
SSDEEP

24576:4EfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ+:1fots

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
776	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\mjfcfuyg\ImagePath = "C:\\Windows\\SysWOW64\\mjfcfuyg\\uuvgbcai.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	2025-02-12_1bbf5e1e29e90ba98f8f2cc1d0b5b853_mafia.exe

Deletes itself 1 IoCs

pid	Process
3404	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4664	uuvgbcai.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4664 set thread context of 3404	4664	uuvgbcai.exe	105

Launches sc.exe 3 IoCs

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

pid	Process
2752	sc.exe
4488	sc.exe
1696	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
1936	1412	WerFault.exe	85
4464	4664	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	MicrosoftEdgeUpdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-12_1bbf5e1e29e90ba98f8f2cc1d0b5b853_mafia.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	uuvgbcai.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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
5036	MicrosoftEdgeUpdate.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1412 wrote to memory of 4984	1412	2025-02-12_1bbf5e1e29e90ba98f8f2cc1d0b5b853_mafia.exe	89
PID 1412 wrote to memory of 4984	1412	2025-02-12_1bbf5e1e29e90ba98f8f2cc1d0b5b853_mafia.exe	89
PID 1412 wrote to memory of 4984	1412	2025-02-12_1bbf5e1e29e90ba98f8f2cc1d0b5b853_mafia.exe	89
PID 1412 wrote to memory of 2800	1412	2025-02-12_1bbf5e1e29e90ba98f8f2cc1d0b5b853_mafia.exe	91
PID 1412 wrote to memory of 2800	1412	2025-02-12_1bbf5e1e29e90ba98f8f2cc1d0b5b853_mafia.exe	91
PID 1412 wrote to memory of 2800	1412	2025-02-12_1bbf5e1e29e90ba98f8f2cc1d0b5b853_mafia.exe	91
PID 1412 wrote to memory of 2752	1412	2025-02-12_1bbf5e1e29e90ba98f8f2cc1d0b5b853_mafia.exe	93
PID 1412 wrote to memory of 2752	1412	2025-02-12_1bbf5e1e29e90ba98f8f2cc1d0b5b853_mafia.exe	93
PID 1412 wrote to memory of 2752	1412	2025-02-12_1bbf5e1e29e90ba98f8f2cc1d0b5b853_mafia.exe	93
PID 1412 wrote to memory of 4488	1412	2025-02-12_1bbf5e1e29e90ba98f8f2cc1d0b5b853_mafia.exe	95
PID 1412 wrote to memory of 4488	1412	2025-02-12_1bbf5e1e29e90ba98f8f2cc1d0b5b853_mafia.exe	95
PID 1412 wrote to memory of 4488	1412	2025-02-12_1bbf5e1e29e90ba98f8f2cc1d0b5b853_mafia.exe	95
PID 1412 wrote to memory of 1696	1412	2025-02-12_1bbf5e1e29e90ba98f8f2cc1d0b5b853_mafia.exe	97
PID 1412 wrote to memory of 1696	1412	2025-02-12_1bbf5e1e29e90ba98f8f2cc1d0b5b853_mafia.exe	97
PID 1412 wrote to memory of 1696	1412	2025-02-12_1bbf5e1e29e90ba98f8f2cc1d0b5b853_mafia.exe	97
PID 1412 wrote to memory of 776	1412	2025-02-12_1bbf5e1e29e90ba98f8f2cc1d0b5b853_mafia.exe	100
PID 1412 wrote to memory of 776	1412	2025-02-12_1bbf5e1e29e90ba98f8f2cc1d0b5b853_mafia.exe	100
PID 1412 wrote to memory of 776	1412	2025-02-12_1bbf5e1e29e90ba98f8f2cc1d0b5b853_mafia.exe	100
PID 4664 wrote to memory of 3404	4664	uuvgbcai.exe	105
PID 4664 wrote to memory of 3404	4664	uuvgbcai.exe	105
PID 4664 wrote to memory of 3404	4664	uuvgbcai.exe	105
PID 4664 wrote to memory of 3404	4664	uuvgbcai.exe	105
PID 4664 wrote to memory of 3404	4664	uuvgbcai.exe	105

C:\Users\Admin\AppData\Local\Temp\2025-02-12_1bbf5e1e29e90ba98f8f2cc1d0b5b853_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-12_1bbf5e1e29e90ba98f8f2cc1d0b5b853_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1412
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mjfcfuyg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4984
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\uuvgbcai.exe" C:\Windows\SysWOW64\mjfcfuyg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2800
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mjfcfuyg binPath= "C:\Windows\SysWOW64\mjfcfuyg\uuvgbcai.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-12_1bbf5e1e29e90ba98f8f2cc1d0b5b853_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2752
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mjfcfuyg "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4488
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mjfcfuyg
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1696
- 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:776
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1412 -s 672
  2⤵
  - Program crash
  PID:1936

C:\Windows\SysWOW64\mjfcfuyg\uuvgbcai.exe
C:\Windows\SysWOW64\mjfcfuyg\uuvgbcai.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-12_1bbf5e1e29e90ba98f8f2cc1d0b5b853_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4664
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3404
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4664 -s 216
  2⤵
  - Program crash
  PID:4464

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1412 -ip 1412
1⤵
PID:4168

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4664 -ip 4664
1⤵
PID:4532

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSI1IiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDY4ODkiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxOTM2NTgwOTAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1NDk5ODg0MTE1Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:5036

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\uuvgbcai.exe

Filesize
14.8MB

MD5
07d45ddbd1a85b3a67b87c4f4816f1a9

SHA1
63c7531ab0ed9a98f3e834024ee9abed8759daec

SHA256
76d0d85d4bf1d8e61f2d22be073386ffcb11bd75c800ff9798e446c94be918d0

SHA512
16dacd3085b0f355aaf177d0c0501e15a2383f76d6b4f2dc0e54be9d59062d7d191b1db9e2e28322c36e904e9bac13aaa93a75b339aa6c1598a3f36ef4d8ebb0

Download Submit
memory/1412-8-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/1412-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1412-1-0x00000000006D0000-0x00000000007D0000-memory.dmp

Filesize
1024KB

Download
memory/1412-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1412-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1412-2-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/3404-14-0x0000000000D90000-0x0000000000DA5000-memory.dmp

Filesize
84KB

Download
memory/3404-16-0x0000000000D90000-0x0000000000DA5000-memory.dmp

Filesize
84KB

Download
memory/3404-17-0x0000000000D90000-0x0000000000DA5000-memory.dmp

Filesize
84KB

Download
memory/4664-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4664-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4664-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4664-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads