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
3500	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\epgmkxxt\ImagePath = "C:\\Windows\\SysWOW64\\epgmkxxt\\bwasitvt.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
2988	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
984	bwasitvt.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 984 set thread context of 2988	984	bwasitvt.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
2848	sc.exe
2800	sc.exe
3192	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
1512	4648	WerFault.exe	81
4692	984	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	bwasitvt.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	sc.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4648 wrote to memory of 632	4648	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	82
PID 4648 wrote to memory of 632	4648	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	82
PID 4648 wrote to memory of 632	4648	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	82
PID 4648 wrote to memory of 4268	4648	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	84
PID 4648 wrote to memory of 4268	4648	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	84
PID 4648 wrote to memory of 4268	4648	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	84
PID 4648 wrote to memory of 2800	4648	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	86
PID 4648 wrote to memory of 2800	4648	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	86
PID 4648 wrote to memory of 2800	4648	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	86
PID 4648 wrote to memory of 3192	4648	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	88
PID 4648 wrote to memory of 3192	4648	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	88
PID 4648 wrote to memory of 3192	4648	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	88
PID 4648 wrote to memory of 2848	4648	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	90
PID 4648 wrote to memory of 2848	4648	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	90
PID 4648 wrote to memory of 2848	4648	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	90
PID 4648 wrote to memory of 3500	4648	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	93
PID 4648 wrote to memory of 3500	4648	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	93
PID 4648 wrote to memory of 3500	4648	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	93
PID 984 wrote to memory of 2988	984	bwasitvt.exe	98
PID 984 wrote to memory of 2988	984	bwasitvt.exe	98
PID 984 wrote to memory of 2988	984	bwasitvt.exe	98
PID 984 wrote to memory of 2988	984	bwasitvt.exe	98
PID 984 wrote to memory of 2988	984	bwasitvt.exe	98

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:4648
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\epgmkxxt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:632
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bwasitvt.exe" C:\Windows\SysWOW64\epgmkxxt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4268
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create epgmkxxt binPath= "C:\Windows\SysWOW64\epgmkxxt\bwasitvt.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:2800
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description epgmkxxt "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3192
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start epgmkxxt
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2848
- 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:3500
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4648 -s 1392
  2⤵
  - Program crash
  PID:1512

C:\Windows\SysWOW64\epgmkxxt\bwasitvt.exe
C:\Windows\SysWOW64\epgmkxxt\bwasitvt.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:984
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2988
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 984 -s 508
  2⤵
  - Program crash
  PID:4692

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4648 -ip 4648
1⤵
PID:184

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 984 -ip 984
1⤵
PID:3048

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\bwasitvt.exe

Filesize
11.9MB

MD5
7fe2880203a283ba3b44e79028efe3c2

SHA1
9894378b265dc77475122c1a68450a0f4f6bab36

SHA256
87387f10e329c21dabd1186a77fb16998ffcb52e4fb2894a8464c62e545aa300

SHA512
2bd066b2b709db9adb1206a51fa1f8a91a030438f07f5648b89d50dda8fe8997e8ca321f201a335faa49ec703bde6790b0ff345bcbc90a7cf04d84d3f3002dc1

Download Submit
memory/984-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/984-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/984-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/984-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2988-14-0x0000000000340000-0x0000000000355000-memory.dmp

Filesize
84KB

Download
memory/2988-16-0x0000000000340000-0x0000000000355000-memory.dmp

Filesize
84KB

Download
memory/2988-17-0x0000000000340000-0x0000000000355000-memory.dmp

Filesize
84KB

Download
memory/4648-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4648-2-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/4648-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4648-8-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/4648-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4648-1-0x0000000000560000-0x0000000000660000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads