tofsee | 0b489e9ad5b9e6b53a04643726fb0843db2e93d5b0035fd14735e02d95b2d7ed

General

Target

2025-01-30_69c2118bb9f0335ae790a1ab0f36f75a_mafia.exe
Size

13.6MB
MD5

69c2118bb9f0335ae790a1ab0f36f75a
SHA1

3b3f9c755c5301f688388857c562367e172955fc
SHA256

0b489e9ad5b9e6b53a04643726fb0843db2e93d5b0035fd14735e02d95b2d7ed
SHA512

e4704e6c6b6dd812a36e48f8e000bf521ed741cdecc865bac841abc3e49e85bb627acbb9c7ea9e950c71d255873b4117250db0735cb840a1fe0a3796a413a5b6
SSDEEP

3072:iLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:LOMdRQr7OB0ypmMXnl8XEPM3noSWOC

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
2036	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\nejlekxj\ImagePath = "C:\\Windows\\SysWOW64\\nejlekxj\\rwgbvheg.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-1-5-21-2436272344-4274332273-444425594-1000\Control Panel\International\Geo\Nation	2025-01-30_69c2118bb9f0335ae790a1ab0f36f75a_mafia.exe

Deletes itself 1 IoCs

pid	Process
1564	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
5084	rwgbvheg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5084 set thread context of 1564	5084	rwgbvheg.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
1576	sc.exe
2984	sc.exe
1852	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
4972	2960	WerFault.exe	82
960	5084	WerFault.exe	96

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	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	rwgbvheg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-30_69c2118bb9f0335ae790a1ab0f36f75a_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2960 wrote to memory of 3900	2960	2025-01-30_69c2118bb9f0335ae790a1ab0f36f75a_mafia.exe	86
PID 2960 wrote to memory of 3900	2960	2025-01-30_69c2118bb9f0335ae790a1ab0f36f75a_mafia.exe	86
PID 2960 wrote to memory of 3900	2960	2025-01-30_69c2118bb9f0335ae790a1ab0f36f75a_mafia.exe	86
PID 2960 wrote to memory of 2204	2960	2025-01-30_69c2118bb9f0335ae790a1ab0f36f75a_mafia.exe	88
PID 2960 wrote to memory of 2204	2960	2025-01-30_69c2118bb9f0335ae790a1ab0f36f75a_mafia.exe	88
PID 2960 wrote to memory of 2204	2960	2025-01-30_69c2118bb9f0335ae790a1ab0f36f75a_mafia.exe	88
PID 2960 wrote to memory of 2984	2960	2025-01-30_69c2118bb9f0335ae790a1ab0f36f75a_mafia.exe	90
PID 2960 wrote to memory of 2984	2960	2025-01-30_69c2118bb9f0335ae790a1ab0f36f75a_mafia.exe	90
PID 2960 wrote to memory of 2984	2960	2025-01-30_69c2118bb9f0335ae790a1ab0f36f75a_mafia.exe	90
PID 2960 wrote to memory of 1852	2960	2025-01-30_69c2118bb9f0335ae790a1ab0f36f75a_mafia.exe	92
PID 2960 wrote to memory of 1852	2960	2025-01-30_69c2118bb9f0335ae790a1ab0f36f75a_mafia.exe	92
PID 2960 wrote to memory of 1852	2960	2025-01-30_69c2118bb9f0335ae790a1ab0f36f75a_mafia.exe	92
PID 2960 wrote to memory of 1576	2960	2025-01-30_69c2118bb9f0335ae790a1ab0f36f75a_mafia.exe	94
PID 2960 wrote to memory of 1576	2960	2025-01-30_69c2118bb9f0335ae790a1ab0f36f75a_mafia.exe	94
PID 2960 wrote to memory of 1576	2960	2025-01-30_69c2118bb9f0335ae790a1ab0f36f75a_mafia.exe	94
PID 2960 wrote to memory of 2036	2960	2025-01-30_69c2118bb9f0335ae790a1ab0f36f75a_mafia.exe	97
PID 2960 wrote to memory of 2036	2960	2025-01-30_69c2118bb9f0335ae790a1ab0f36f75a_mafia.exe	97
PID 2960 wrote to memory of 2036	2960	2025-01-30_69c2118bb9f0335ae790a1ab0f36f75a_mafia.exe	97
PID 5084 wrote to memory of 1564	5084	rwgbvheg.exe	102
PID 5084 wrote to memory of 1564	5084	rwgbvheg.exe	102
PID 5084 wrote to memory of 1564	5084	rwgbvheg.exe	102
PID 5084 wrote to memory of 1564	5084	rwgbvheg.exe	102
PID 5084 wrote to memory of 1564	5084	rwgbvheg.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-01-30_69c2118bb9f0335ae790a1ab0f36f75a_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-30_69c2118bb9f0335ae790a1ab0f36f75a_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2960
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nejlekxj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3900
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rwgbvheg.exe" C:\Windows\SysWOW64\nejlekxj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2204
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nejlekxj binPath= "C:\Windows\SysWOW64\nejlekxj\rwgbvheg.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-30_69c2118bb9f0335ae790a1ab0f36f75a_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2984
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nejlekxj "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1852
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nejlekxj
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1576
- 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:2036
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2960 -s 1208
  2⤵
  - Program crash
  PID:4972

C:\Windows\SysWOW64\nejlekxj\rwgbvheg.exe
C:\Windows\SysWOW64\nejlekxj\rwgbvheg.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-30_69c2118bb9f0335ae790a1ab0f36f75a_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5084
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1564
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5084 -s 512
  2⤵
  - Program crash
  PID:960

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2960 -ip 2960
1⤵
PID:4736

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 5084 -ip 5084
1⤵
PID:5100

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\rwgbvheg.exe

Filesize
10.4MB

MD5
8381caa213e3ffb420c20522080a2e6a

SHA1
c196423739ef2f01e881e49fc1ad27b9e3994ad6

SHA256
fa0e2ee0e613aa929142cec9812eb3a279015f9978d86c5809d28562cb380736

SHA512
c4e3ab7e5baaf7569fede444b55fef6fc7901fb6d234d952ca9670a19961b7e615fa7043e4db60f44ceafe135aaf1e6256f3e4774c458cf8ad8097ed127f8fcf

Download Submit
memory/1564-14-0x0000000000D20000-0x0000000000D35000-memory.dmp

Filesize
84KB

Download
memory/1564-17-0x0000000000D20000-0x0000000000D35000-memory.dmp

Filesize
84KB

Download
memory/1564-16-0x0000000000D20000-0x0000000000D35000-memory.dmp

Filesize
84KB

Download
memory/2960-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2960-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2960-1-0x0000000000690000-0x0000000000790000-memory.dmp

Filesize
1024KB

Download
memory/2960-8-0x0000000000890000-0x00000000008A3000-memory.dmp

Filesize
76KB

Download
memory/2960-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2960-2-0x0000000000890000-0x00000000008A3000-memory.dmp

Filesize
76KB

Download
memory/5084-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/5084-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/5084-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/5084-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads