tofsee | f41e84a74a46234e7e8864813e0325151e78cef7155e84490519cc2d5adca8b1

General

Target

2025-01-19_c63778e93f7529031491210a143a3b73_mafia.exe
Size

12.7MB
MD5

c63778e93f7529031491210a143a3b73
SHA1

11c1b76f3ef22cbaa76e0a416a1f2fdc6564f186
SHA256

f41e84a74a46234e7e8864813e0325151e78cef7155e84490519cc2d5adca8b1
SHA512

7118c24c6d35a2061e7f20dfeead6689dca67405abd8634f56427232b322a380c06d7864f12c6e68957bb0c4db092c0cbdf052402ecf6535cc74fe41ecb39240
SSDEEP

49152:8qE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP:8qtYc3

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
1576	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\ajjjshky\ImagePath = "C:\\Windows\\SysWOW64\\ajjjshky\\vtcdmixt.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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	2025-01-19_c63778e93f7529031491210a143a3b73_mafia.exe

Deletes itself 1 IoCs

pid	Process
4336	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3836	vtcdmixt.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3836 set thread context of 4336	3836	vtcdmixt.exe	97

Launches sc.exe 3 IoCs

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

pid	Process
2224	sc.exe
388	sc.exe
2956	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
2900	2648	WerFault.exe	82
1872	3836	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	vtcdmixt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-19_c63778e93f7529031491210a143a3b73_mafia.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2648 wrote to memory of 4064	2648	2025-01-19_c63778e93f7529031491210a143a3b73_mafia.exe	83
PID 2648 wrote to memory of 4064	2648	2025-01-19_c63778e93f7529031491210a143a3b73_mafia.exe	83
PID 2648 wrote to memory of 4064	2648	2025-01-19_c63778e93f7529031491210a143a3b73_mafia.exe	83
PID 2648 wrote to memory of 1432	2648	2025-01-19_c63778e93f7529031491210a143a3b73_mafia.exe	85
PID 2648 wrote to memory of 1432	2648	2025-01-19_c63778e93f7529031491210a143a3b73_mafia.exe	85
PID 2648 wrote to memory of 1432	2648	2025-01-19_c63778e93f7529031491210a143a3b73_mafia.exe	85
PID 2648 wrote to memory of 2224	2648	2025-01-19_c63778e93f7529031491210a143a3b73_mafia.exe	87
PID 2648 wrote to memory of 2224	2648	2025-01-19_c63778e93f7529031491210a143a3b73_mafia.exe	87
PID 2648 wrote to memory of 2224	2648	2025-01-19_c63778e93f7529031491210a143a3b73_mafia.exe	87
PID 2648 wrote to memory of 388	2648	2025-01-19_c63778e93f7529031491210a143a3b73_mafia.exe	89
PID 2648 wrote to memory of 388	2648	2025-01-19_c63778e93f7529031491210a143a3b73_mafia.exe	89
PID 2648 wrote to memory of 388	2648	2025-01-19_c63778e93f7529031491210a143a3b73_mafia.exe	89
PID 2648 wrote to memory of 2956	2648	2025-01-19_c63778e93f7529031491210a143a3b73_mafia.exe	91
PID 2648 wrote to memory of 2956	2648	2025-01-19_c63778e93f7529031491210a143a3b73_mafia.exe	91
PID 2648 wrote to memory of 2956	2648	2025-01-19_c63778e93f7529031491210a143a3b73_mafia.exe	91
PID 2648 wrote to memory of 1576	2648	2025-01-19_c63778e93f7529031491210a143a3b73_mafia.exe	94
PID 2648 wrote to memory of 1576	2648	2025-01-19_c63778e93f7529031491210a143a3b73_mafia.exe	94
PID 2648 wrote to memory of 1576	2648	2025-01-19_c63778e93f7529031491210a143a3b73_mafia.exe	94
PID 3836 wrote to memory of 4336	3836	vtcdmixt.exe	97
PID 3836 wrote to memory of 4336	3836	vtcdmixt.exe	97
PID 3836 wrote to memory of 4336	3836	vtcdmixt.exe	97
PID 3836 wrote to memory of 4336	3836	vtcdmixt.exe	97
PID 3836 wrote to memory of 4336	3836	vtcdmixt.exe	97

C:\Users\Admin\AppData\Local\Temp\2025-01-19_c63778e93f7529031491210a143a3b73_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-19_c63778e93f7529031491210a143a3b73_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2648
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ajjjshky\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4064
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vtcdmixt.exe" C:\Windows\SysWOW64\ajjjshky\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1432
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ajjjshky binPath= "C:\Windows\SysWOW64\ajjjshky\vtcdmixt.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-19_c63778e93f7529031491210a143a3b73_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2224
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ajjjshky "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:388
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ajjjshky
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2956
- 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:1576
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2648 -s 1280
  2⤵
  - Program crash
  PID:2900

C:\Windows\SysWOW64\ajjjshky\vtcdmixt.exe
C:\Windows\SysWOW64\ajjjshky\vtcdmixt.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-19_c63778e93f7529031491210a143a3b73_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3836
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4336
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3836 -s 512
  2⤵
  - Program crash
  PID:1872

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 2648 -ip 2648
1⤵
PID:5036

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3836 -ip 3836
1⤵
PID:964

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\vtcdmixt.exe

Filesize
10.7MB

MD5
6318219e47326940bedbba8cf354dd24

SHA1
ff83e6cd1917f7f383eab9661d077feb5ec5de18

SHA256
058a4b0cbcd8d007a10abd24a3c4abf244a043d0b7aba2c09f7aed9177beb2b1

SHA512
bf0655b83e182eb37599bf46fa02edca7c75a15569c716abf17cd8f9531ada94535dd1154e32e9f274bd1b7553f43a051ad69bb1dcd2c55aded644dc1746dfda

Download Submit
memory/2648-1-0x0000000003030000-0x0000000003130000-memory.dmp

Filesize
1024KB

Download
memory/2648-2-0x0000000003000000-0x0000000003013000-memory.dmp

Filesize
76KB

Download
memory/2648-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2648-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2648-12-0x0000000003000000-0x0000000003013000-memory.dmp

Filesize
76KB

Download
memory/2648-11-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/3836-10-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/4336-8-0x0000000000920000-0x0000000000935000-memory.dmp

Filesize
84KB

Download
memory/4336-14-0x0000000000920000-0x0000000000935000-memory.dmp

Filesize
84KB

Download
memory/4336-15-0x0000000000920000-0x0000000000935000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads