tofsee | deca27efcb76e9f1367b6e1c000637e8bbece45ad54f46eb2cbf92bbaff61653

General

Target

2025-01-28_73fac9797acbd907ea90abc6b3daec3e_mafia.exe
Size

13.0MB
MD5

73fac9797acbd907ea90abc6b3daec3e
SHA1

e87ffea509e39d8abf5bf8b6a0a848ae2f71e225
SHA256

deca27efcb76e9f1367b6e1c000637e8bbece45ad54f46eb2cbf92bbaff61653
SHA512

5e6bca82ceaa8d506abf874244e831b623f579ba54e234408904e77e9eabf8b178d44fd149a8d428f9768165e7179ec72d53c526fa04974899f74aef72404322
SSDEEP

24576:FEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ6:Ofotw

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
4764	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\ijfyshsg\ImagePath = "C:\\Windows\\SysWOW64\\ijfyshsg\\iewwtihv.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	2025-01-28_73fac9797acbd907ea90abc6b3daec3e_mafia.exe

Deletes itself 1 IoCs

pid	Process
936	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2208	iewwtihv.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2208 set thread context of 936	2208	iewwtihv.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
464	sc.exe
4684	sc.exe
3204	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
3272	3808	WerFault.exe	81
2160	2208	WerFault.exe	92

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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iewwtihv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-28_73fac9797acbd907ea90abc6b3daec3e_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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3808 wrote to memory of 3516	3808	2025-01-28_73fac9797acbd907ea90abc6b3daec3e_mafia.exe	82
PID 3808 wrote to memory of 3516	3808	2025-01-28_73fac9797acbd907ea90abc6b3daec3e_mafia.exe	82
PID 3808 wrote to memory of 3516	3808	2025-01-28_73fac9797acbd907ea90abc6b3daec3e_mafia.exe	82
PID 3808 wrote to memory of 4296	3808	2025-01-28_73fac9797acbd907ea90abc6b3daec3e_mafia.exe	84
PID 3808 wrote to memory of 4296	3808	2025-01-28_73fac9797acbd907ea90abc6b3daec3e_mafia.exe	84
PID 3808 wrote to memory of 4296	3808	2025-01-28_73fac9797acbd907ea90abc6b3daec3e_mafia.exe	84
PID 3808 wrote to memory of 4684	3808	2025-01-28_73fac9797acbd907ea90abc6b3daec3e_mafia.exe	86
PID 3808 wrote to memory of 4684	3808	2025-01-28_73fac9797acbd907ea90abc6b3daec3e_mafia.exe	86
PID 3808 wrote to memory of 4684	3808	2025-01-28_73fac9797acbd907ea90abc6b3daec3e_mafia.exe	86
PID 3808 wrote to memory of 3204	3808	2025-01-28_73fac9797acbd907ea90abc6b3daec3e_mafia.exe	88
PID 3808 wrote to memory of 3204	3808	2025-01-28_73fac9797acbd907ea90abc6b3daec3e_mafia.exe	88
PID 3808 wrote to memory of 3204	3808	2025-01-28_73fac9797acbd907ea90abc6b3daec3e_mafia.exe	88
PID 3808 wrote to memory of 464	3808	2025-01-28_73fac9797acbd907ea90abc6b3daec3e_mafia.exe	90
PID 3808 wrote to memory of 464	3808	2025-01-28_73fac9797acbd907ea90abc6b3daec3e_mafia.exe	90
PID 3808 wrote to memory of 464	3808	2025-01-28_73fac9797acbd907ea90abc6b3daec3e_mafia.exe	90
PID 3808 wrote to memory of 4764	3808	2025-01-28_73fac9797acbd907ea90abc6b3daec3e_mafia.exe	93
PID 3808 wrote to memory of 4764	3808	2025-01-28_73fac9797acbd907ea90abc6b3daec3e_mafia.exe	93
PID 3808 wrote to memory of 4764	3808	2025-01-28_73fac9797acbd907ea90abc6b3daec3e_mafia.exe	93
PID 2208 wrote to memory of 936	2208	iewwtihv.exe	102
PID 2208 wrote to memory of 936	2208	iewwtihv.exe	102
PID 2208 wrote to memory of 936	2208	iewwtihv.exe	102
PID 2208 wrote to memory of 936	2208	iewwtihv.exe	102
PID 2208 wrote to memory of 936	2208	iewwtihv.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-01-28_73fac9797acbd907ea90abc6b3daec3e_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-28_73fac9797acbd907ea90abc6b3daec3e_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3808
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ijfyshsg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3516
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\iewwtihv.exe" C:\Windows\SysWOW64\ijfyshsg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4296
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ijfyshsg binPath= "C:\Windows\SysWOW64\ijfyshsg\iewwtihv.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-28_73fac9797acbd907ea90abc6b3daec3e_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4684
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ijfyshsg "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3204
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ijfyshsg
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:464
- 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:4764
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3808 -s 1044
  2⤵
  - Program crash
  PID:3272

C:\Windows\SysWOW64\ijfyshsg\iewwtihv.exe
C:\Windows\SysWOW64\ijfyshsg\iewwtihv.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-28_73fac9797acbd907ea90abc6b3daec3e_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2208
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:936
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2208 -s 528
  2⤵
  - Program crash
  PID:2160

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 3808 -ip 3808
1⤵
PID:3456

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 2208 -ip 2208
1⤵
PID:2292

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\iewwtihv.exe

Filesize
13.9MB

MD5
40db7ed79331fda07c83fddc1f5ed39e

SHA1
aea0f7660b8b485e534a87094a3b958fedd2f1fd

SHA256
f616478e1e53ba130afbe1e930d5239a15e3a40dbac07dd63cef947f6d9950bd

SHA512
88c492caf766d15b88e38cae37090146967021226916502ca1eee37fc2582e6f9734aa934e84d4b3c8a778ae0df30dbf0301bfeca8edbf7f3e2624bbf73e29f1

Download Submit
memory/936-17-0x00000000004E0000-0x00000000004F5000-memory.dmp

Filesize
84KB

Download
memory/936-16-0x00000000004E0000-0x00000000004F5000-memory.dmp

Filesize
84KB

Download
memory/936-14-0x00000000004E0000-0x00000000004F5000-memory.dmp

Filesize
84KB

Download
memory/2208-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2208-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2208-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2208-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3808-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3808-1-0x0000000000720000-0x0000000000820000-memory.dmp

Filesize
1024KB

Download
memory/3808-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3808-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3808-8-0x0000000000690000-0x00000000006A3000-memory.dmp

Filesize
76KB

Download
memory/3808-2-0x0000000000690000-0x00000000006A3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads