tofsee | 170e8cb3e4e81ef1e10adbd13e8172334a6ad1f62d7f64b2eb00688eee2abd53

General

Target

2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe
Size

236KB
MD5

bca290cedf0f3ff0b6fcdadb8b561871
SHA1

89efca3114eab03cd160d3dc31c69a29980fc944
SHA256

170e8cb3e4e81ef1e10adbd13e8172334a6ad1f62d7f64b2eb00688eee2abd53
SHA512

cc4d41c3ceffe57a927300a84b022aa9df8dd43ed46f5aafbef17a0a82e91543271ec0eb16da7385ed581a45b899ccff0ddb1c2998c87d72fe5fb2c7c295cda0
SSDEEP

3072:3RaPw6Jy/NyTEIzkzCrcUE1LxCcdtP40NL0aOFL6GpCKIOBvgY21KSt08NUj0DC/:ew68NpzxddVpKV6G7VgRqQdQ

Score

10^/10

tofsee discovery evasion 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

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
4800	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\igvtluwv\ImagePath = "C:\\Windows\\SysWOW64\\igvtluwv\\gaarclce.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	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe

Deletes itself 1 IoCs

pid	Process
4980	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1752	gaarclce.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1752 set thread context of 4980	1752	gaarclce.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
1472	sc.exe
3228	sc.exe
2788	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
3232	4460	WerFault.exe	82
3896	1752	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	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gaarclce.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4460 wrote to memory of 372	4460	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	84
PID 4460 wrote to memory of 372	4460	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	84
PID 4460 wrote to memory of 372	4460	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	84
PID 4460 wrote to memory of 1620	4460	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	86
PID 4460 wrote to memory of 1620	4460	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	86
PID 4460 wrote to memory of 1620	4460	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	86
PID 4460 wrote to memory of 1472	4460	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	88
PID 4460 wrote to memory of 1472	4460	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	88
PID 4460 wrote to memory of 1472	4460	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	88
PID 4460 wrote to memory of 3228	4460	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	90
PID 4460 wrote to memory of 3228	4460	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	90
PID 4460 wrote to memory of 3228	4460	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	90
PID 4460 wrote to memory of 2788	4460	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	92
PID 4460 wrote to memory of 2788	4460	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	92
PID 4460 wrote to memory of 2788	4460	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	92
PID 4460 wrote to memory of 4800	4460	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	95
PID 4460 wrote to memory of 4800	4460	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	95
PID 4460 wrote to memory of 4800	4460	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	95
PID 1752 wrote to memory of 4980	1752	gaarclce.exe	101
PID 1752 wrote to memory of 4980	1752	gaarclce.exe	101
PID 1752 wrote to memory of 4980	1752	gaarclce.exe	101
PID 1752 wrote to memory of 4980	1752	gaarclce.exe	101
PID 1752 wrote to memory of 4980	1752	gaarclce.exe	101

C:\Users\Admin\AppData\Local\Temp\2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4460
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\igvtluwv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:372
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gaarclce.exe" C:\Windows\SysWOW64\igvtluwv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1620
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create igvtluwv binPath= "C:\Windows\SysWOW64\igvtluwv\gaarclce.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1472
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description igvtluwv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3228
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start igvtluwv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2788
- 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:4800
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4460 -s 1260
  2⤵
  - Program crash
  PID:3232

C:\Windows\SysWOW64\igvtluwv\gaarclce.exe
C:\Windows\SysWOW64\igvtluwv\gaarclce.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1752
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4980
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1752 -s 532
  2⤵
  - Program crash
  PID:3896

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4460 -ip 4460
1⤵
PID:4308

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1752 -ip 1752
1⤵
PID:4052

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\gaarclce.exe

Filesize
10.7MB

MD5
1dbb8545c4775d7fd08b95b41244d20f

SHA1
7803be147329aaadc01c79eeae71f9164fd46b6a

SHA256
0638c30e3dc5baa9ace4aff76b6cd151adbdbb3b6b6a6620c80da4e6f0320e83

SHA512
dd0afbb6d7fdae6dd1d435c7403f5481030bee22864953fa31082c3a4416217809ac5a5e7be342528e04ce4130917f94488c52becf0959739b963bad4e7db7b4

Download Submit
memory/1752-13-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/1752-12-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/1752-11-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/1752-19-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4460-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4460-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/4460-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4460-8-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/4460-7-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4460-1-0x00000000006F0000-0x00000000007F0000-memory.dmp

Filesize
1024KB

Download
memory/4980-14-0x0000000000B70000-0x0000000000B85000-memory.dmp

Filesize
84KB

Download
memory/4980-16-0x0000000000B70000-0x0000000000B85000-memory.dmp

Filesize
84KB

Download
memory/4980-17-0x0000000000B70000-0x0000000000B85000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads