tofsee | 8e2a3d3ea5c46d4ec6411fe04d4014cce7859c1acdd5308f1167091770b53b3a

General

Target

2025-01-24_b27dac955cb9ae7d3f515d18cfdafcc7_mafia.exe
Size

14.3MB
MD5

b27dac955cb9ae7d3f515d18cfdafcc7
SHA1

a37981b1a34a494c478d1e8e796881989793bed3
SHA256

8e2a3d3ea5c46d4ec6411fe04d4014cce7859c1acdd5308f1167091770b53b3a
SHA512

c582a93e4b3fcf4c700bf4478c58dd05911b92323c0d3da0a187cd6e93bc53ef318c2195274aaf23d256325401ec97037deae385b97a6bd6925d8cb47315135c
SSDEEP

3072:SLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:7OMdRQr7OB0ypmMXnl8XEPM3noSWOC

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
228	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\avsakont\ImagePath = "C:\\Windows\\SysWOW64\\avsakont\\fncgtraa.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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	2025-01-24_b27dac955cb9ae7d3f515d18cfdafcc7_mafia.exe

Deletes itself 1 IoCs

pid	Process
3408	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3268	fncgtraa.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3268 set thread context of 3408	3268	fncgtraa.exe	107

Launches sc.exe 3 IoCs

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

pid	Process
3312	sc.exe
5000	sc.exe
1316	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
4712	3332	WerFault.exe	82
1844	3268	WerFault.exe	94

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	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	2025-01-24_b27dac955cb9ae7d3f515d18cfdafcc7_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	fncgtraa.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3332 wrote to memory of 4804	3332	2025-01-24_b27dac955cb9ae7d3f515d18cfdafcc7_mafia.exe	84
PID 3332 wrote to memory of 4804	3332	2025-01-24_b27dac955cb9ae7d3f515d18cfdafcc7_mafia.exe	84
PID 3332 wrote to memory of 4804	3332	2025-01-24_b27dac955cb9ae7d3f515d18cfdafcc7_mafia.exe	84
PID 3332 wrote to memory of 3768	3332	2025-01-24_b27dac955cb9ae7d3f515d18cfdafcc7_mafia.exe	86
PID 3332 wrote to memory of 3768	3332	2025-01-24_b27dac955cb9ae7d3f515d18cfdafcc7_mafia.exe	86
PID 3332 wrote to memory of 3768	3332	2025-01-24_b27dac955cb9ae7d3f515d18cfdafcc7_mafia.exe	86
PID 3332 wrote to memory of 3312	3332	2025-01-24_b27dac955cb9ae7d3f515d18cfdafcc7_mafia.exe	88
PID 3332 wrote to memory of 3312	3332	2025-01-24_b27dac955cb9ae7d3f515d18cfdafcc7_mafia.exe	88
PID 3332 wrote to memory of 3312	3332	2025-01-24_b27dac955cb9ae7d3f515d18cfdafcc7_mafia.exe	88
PID 3332 wrote to memory of 5000	3332	2025-01-24_b27dac955cb9ae7d3f515d18cfdafcc7_mafia.exe	90
PID 3332 wrote to memory of 5000	3332	2025-01-24_b27dac955cb9ae7d3f515d18cfdafcc7_mafia.exe	90
PID 3332 wrote to memory of 5000	3332	2025-01-24_b27dac955cb9ae7d3f515d18cfdafcc7_mafia.exe	90
PID 3332 wrote to memory of 1316	3332	2025-01-24_b27dac955cb9ae7d3f515d18cfdafcc7_mafia.exe	92
PID 3332 wrote to memory of 1316	3332	2025-01-24_b27dac955cb9ae7d3f515d18cfdafcc7_mafia.exe	92
PID 3332 wrote to memory of 1316	3332	2025-01-24_b27dac955cb9ae7d3f515d18cfdafcc7_mafia.exe	92
PID 3332 wrote to memory of 228	3332	2025-01-24_b27dac955cb9ae7d3f515d18cfdafcc7_mafia.exe	95
PID 3332 wrote to memory of 228	3332	2025-01-24_b27dac955cb9ae7d3f515d18cfdafcc7_mafia.exe	95
PID 3332 wrote to memory of 228	3332	2025-01-24_b27dac955cb9ae7d3f515d18cfdafcc7_mafia.exe	95
PID 3268 wrote to memory of 3408	3268	fncgtraa.exe	107
PID 3268 wrote to memory of 3408	3268	fncgtraa.exe	107
PID 3268 wrote to memory of 3408	3268	fncgtraa.exe	107
PID 3268 wrote to memory of 3408	3268	fncgtraa.exe	107
PID 3268 wrote to memory of 3408	3268	fncgtraa.exe	107

C:\Users\Admin\AppData\Local\Temp\2025-01-24_b27dac955cb9ae7d3f515d18cfdafcc7_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-24_b27dac955cb9ae7d3f515d18cfdafcc7_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3332
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\avsakont\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4804
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fncgtraa.exe" C:\Windows\SysWOW64\avsakont\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3768
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create avsakont binPath= "C:\Windows\SysWOW64\avsakont\fncgtraa.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-24_b27dac955cb9ae7d3f515d18cfdafcc7_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3312
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description avsakont "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5000
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start avsakont
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1316
- 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:228
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3332 -s 1040
  2⤵
  - Program crash
  PID:4712

C:\Windows\SysWOW64\avsakont\fncgtraa.exe
C:\Windows\SysWOW64\avsakont\fncgtraa.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-24_b27dac955cb9ae7d3f515d18cfdafcc7_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3268
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3408
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3268 -s 512
  2⤵
  - Program crash
  PID:1844

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3332 -ip 3332
1⤵
PID:4692

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 3268 -ip 3268
1⤵
PID:4236

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\fncgtraa.exe

Filesize
13.7MB

MD5
444f16ec03ad5406ff9ccea79d47e6a0

SHA1
333c4c3f46d7a86a1815303f6a7f67ea6aa25d5b

SHA256
2d0f231e576b0aa68228c841a1d333bcd62cf4a4e43dcb380887658e2a066d97

SHA512
bed077b386d5782effaa36d3f086e573739cd1e2fee7576f6f9e0f0e7aedd7248ccb1d9010f39ab6474859de7ced44e1c0c408bc6badfd05e01121c167fd2200

Download Submit
memory/3268-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3268-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3268-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3268-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3332-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3332-1-0x0000000000520000-0x0000000000620000-memory.dmp

Filesize
1024KB

Download
memory/3332-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3332-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3332-8-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/3332-2-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/3408-14-0x00000000007E0000-0x00000000007F5000-memory.dmp

Filesize
84KB

Download
memory/3408-16-0x00000000007E0000-0x00000000007F5000-memory.dmp

Filesize
84KB

Download
memory/3408-17-0x00000000007E0000-0x00000000007F5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads