tofsee | 25ea713eaea092a55c88031ea995a15a520d68f0f6b2d6b48a9028cebeb93ae0

General

Target

2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe
Size

14.2MB
MD5

523d1fcb30b0be55025f943dd2ea782c
SHA1

46f37da9a49c94ca28ffd85d6f2755e4092d8828
SHA256

25ea713eaea092a55c88031ea995a15a520d68f0f6b2d6b48a9028cebeb93ae0
SHA512

eb2cbdec907789cc52c2458cb75e0f333b400c35be2dbadbdcf9e2339084dd4a48a3d9179de0403dd1aa7a37d10a04252338c5fe8b8bf02e4ffe35947ca3a44f
SSDEEP

24576:sEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZj:pfot

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
4444	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\hamnlcav\ImagePath = "C:\\Windows\\SysWOW64\\hamnlcav\\acvgnvjz.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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe

Deletes itself 1 IoCs

pid	Process
4896	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3256	acvgnvjz.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3256 set thread context of 4896	3256	acvgnvjz.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
2204	sc.exe
5072	sc.exe
1976	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
3008	2716	WerFault.exe	82
2600	3256	WerFault.exe	93

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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_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	acvgnvjz.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2716 wrote to memory of 3956	2716	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	83
PID 2716 wrote to memory of 3956	2716	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	83
PID 2716 wrote to memory of 3956	2716	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	83
PID 2716 wrote to memory of 4516	2716	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	85
PID 2716 wrote to memory of 4516	2716	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	85
PID 2716 wrote to memory of 4516	2716	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	85
PID 2716 wrote to memory of 2204	2716	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	87
PID 2716 wrote to memory of 2204	2716	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	87
PID 2716 wrote to memory of 2204	2716	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	87
PID 2716 wrote to memory of 5072	2716	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	89
PID 2716 wrote to memory of 5072	2716	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	89
PID 2716 wrote to memory of 5072	2716	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	89
PID 2716 wrote to memory of 1976	2716	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	91
PID 2716 wrote to memory of 1976	2716	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	91
PID 2716 wrote to memory of 1976	2716	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	91
PID 2716 wrote to memory of 4444	2716	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	94
PID 2716 wrote to memory of 4444	2716	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	94
PID 2716 wrote to memory of 4444	2716	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	94
PID 3256 wrote to memory of 4896	3256	acvgnvjz.exe	101
PID 3256 wrote to memory of 4896	3256	acvgnvjz.exe	101
PID 3256 wrote to memory of 4896	3256	acvgnvjz.exe	101
PID 3256 wrote to memory of 4896	3256	acvgnvjz.exe	101
PID 3256 wrote to memory of 4896	3256	acvgnvjz.exe	101

C:\Users\Admin\AppData\Local\Temp\2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2716
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hamnlcav\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3956
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\acvgnvjz.exe" C:\Windows\SysWOW64\hamnlcav\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4516
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create hamnlcav binPath= "C:\Windows\SysWOW64\hamnlcav\acvgnvjz.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2204
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description hamnlcav "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5072
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start hamnlcav
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1976
- 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:4444
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2716 -s 1028
  2⤵
  - Program crash
  PID:3008

C:\Windows\SysWOW64\hamnlcav\acvgnvjz.exe
C:\Windows\SysWOW64\hamnlcav\acvgnvjz.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3256
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4896
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3256 -s 512
  2⤵
  - Program crash
  PID:2600

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2716 -ip 2716
1⤵
PID:2348

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 3256 -ip 3256
1⤵
PID:4944

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\acvgnvjz.exe

Filesize
13.9MB

MD5
03b2e189701be127db83710f7c0e0340

SHA1
867efdd114801c7a6734f0bfe475990f9a2b474f

SHA256
291e76eb4e8afe43fbb5fada73872a7e853909d63068702292272279f7c95100

SHA512
06ea026756f0802c4a0075365027cd3f12c1a417240a18513bb662553eb016d7c0b6beb60b0e91b5281427213690d104922a76f4b5d9f4dba950830d54eb347e

Download Submit
memory/2716-8-0x00000000001D0000-0x00000000001E3000-memory.dmp

Filesize
76KB

Download
memory/2716-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2716-2-0x00000000001D0000-0x00000000001E3000-memory.dmp

Filesize
76KB

Download
memory/2716-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2716-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2716-1-0x0000000000470000-0x0000000000570000-memory.dmp

Filesize
1024KB

Download
memory/3256-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3256-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3256-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3256-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4896-14-0x00000000009E0000-0x00000000009F5000-memory.dmp

Filesize
84KB

Download
memory/4896-16-0x00000000009E0000-0x00000000009F5000-memory.dmp

Filesize
84KB

Download
memory/4896-17-0x00000000009E0000-0x00000000009F5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads