tofsee | fefee86df24f3fb8b4a7603cb705123e3bac6bfabfea9389626f6ee264774c68

General

Target

2025-01-26_8fa3b30d86e1b8252415ed51098a5bb6_mafia.exe
Size

10.3MB
MD5

8fa3b30d86e1b8252415ed51098a5bb6
SHA1

4f6f2e6e1096c7516281cd71f764a52e6ced3c2d
SHA256

fefee86df24f3fb8b4a7603cb705123e3bac6bfabfea9389626f6ee264774c68
SHA512

cfda7210ff221dd3baba976e4f89d0cb40504313b3d9e7af89f8ca52c42306b67f8590a7708e5f422aeaaa76a7bcfa2a53b207c13232571be67024da4f7fe30d
SSDEEP

49152:yqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP:yqtYc3

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
2624	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\uxibrxjo\ImagePath = "C:\\Windows\\SysWOW64\\uxibrxjo\\mdljtovj.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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	2025-01-26_8fa3b30d86e1b8252415ed51098a5bb6_mafia.exe

Deletes itself 1 IoCs

pid	Process
3608	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1404	mdljtovj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1404 set thread context of 3608	1404	mdljtovj.exe	95

Launches sc.exe 3 IoCs

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

pid	Process
4484	sc.exe
3636	sc.exe
1592	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
376	1404	WerFault.exe	93
212	2036	WerFault.exe	82

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mdljtovj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-26_8fa3b30d86e1b8252415ed51098a5bb6_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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2036 wrote to memory of 5092	2036	2025-01-26_8fa3b30d86e1b8252415ed51098a5bb6_mafia.exe	83
PID 2036 wrote to memory of 5092	2036	2025-01-26_8fa3b30d86e1b8252415ed51098a5bb6_mafia.exe	83
PID 2036 wrote to memory of 5092	2036	2025-01-26_8fa3b30d86e1b8252415ed51098a5bb6_mafia.exe	83
PID 2036 wrote to memory of 1240	2036	2025-01-26_8fa3b30d86e1b8252415ed51098a5bb6_mafia.exe	85
PID 2036 wrote to memory of 1240	2036	2025-01-26_8fa3b30d86e1b8252415ed51098a5bb6_mafia.exe	85
PID 2036 wrote to memory of 1240	2036	2025-01-26_8fa3b30d86e1b8252415ed51098a5bb6_mafia.exe	85
PID 2036 wrote to memory of 4484	2036	2025-01-26_8fa3b30d86e1b8252415ed51098a5bb6_mafia.exe	87
PID 2036 wrote to memory of 4484	2036	2025-01-26_8fa3b30d86e1b8252415ed51098a5bb6_mafia.exe	87
PID 2036 wrote to memory of 4484	2036	2025-01-26_8fa3b30d86e1b8252415ed51098a5bb6_mafia.exe	87
PID 2036 wrote to memory of 3636	2036	2025-01-26_8fa3b30d86e1b8252415ed51098a5bb6_mafia.exe	89
PID 2036 wrote to memory of 3636	2036	2025-01-26_8fa3b30d86e1b8252415ed51098a5bb6_mafia.exe	89
PID 2036 wrote to memory of 3636	2036	2025-01-26_8fa3b30d86e1b8252415ed51098a5bb6_mafia.exe	89
PID 2036 wrote to memory of 1592	2036	2025-01-26_8fa3b30d86e1b8252415ed51098a5bb6_mafia.exe	91
PID 2036 wrote to memory of 1592	2036	2025-01-26_8fa3b30d86e1b8252415ed51098a5bb6_mafia.exe	91
PID 2036 wrote to memory of 1592	2036	2025-01-26_8fa3b30d86e1b8252415ed51098a5bb6_mafia.exe	91
PID 1404 wrote to memory of 3608	1404	mdljtovj.exe	95
PID 1404 wrote to memory of 3608	1404	mdljtovj.exe	95
PID 1404 wrote to memory of 3608	1404	mdljtovj.exe	95
PID 2036 wrote to memory of 2624	2036	2025-01-26_8fa3b30d86e1b8252415ed51098a5bb6_mafia.exe	94
PID 2036 wrote to memory of 2624	2036	2025-01-26_8fa3b30d86e1b8252415ed51098a5bb6_mafia.exe	94
PID 2036 wrote to memory of 2624	2036	2025-01-26_8fa3b30d86e1b8252415ed51098a5bb6_mafia.exe	94
PID 1404 wrote to memory of 3608	1404	mdljtovj.exe	95
PID 1404 wrote to memory of 3608	1404	mdljtovj.exe	95

C:\Users\Admin\AppData\Local\Temp\2025-01-26_8fa3b30d86e1b8252415ed51098a5bb6_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-26_8fa3b30d86e1b8252415ed51098a5bb6_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2036
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\uxibrxjo\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5092
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mdljtovj.exe" C:\Windows\SysWOW64\uxibrxjo\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1240
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create uxibrxjo binPath= "C:\Windows\SysWOW64\uxibrxjo\mdljtovj.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-26_8fa3b30d86e1b8252415ed51098a5bb6_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4484
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description uxibrxjo "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3636
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start uxibrxjo
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1592
- 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:2624
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2036 -s 1028
  2⤵
  - Program crash
  PID:212

C:\Windows\SysWOW64\uxibrxjo\mdljtovj.exe
C:\Windows\SysWOW64\uxibrxjo\mdljtovj.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-26_8fa3b30d86e1b8252415ed51098a5bb6_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1404
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3608
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1404 -s 512
  2⤵
  - Program crash
  PID:376

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 1404 -ip 1404
1⤵
PID:3576

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 2036 -ip 2036
1⤵
PID:2076

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\mdljtovj.exe

Filesize
14.6MB

MD5
000902790eacc0ac293c991dcdfae295

SHA1
58e9ba8e74cd2a5209c434c1a3d5ddfa2dae9f41

SHA256
8c9d73f067077892c0ffbe4778c063fc50ad6235c6e35e08e7358bb5e6751ab3

SHA512
9c9abdb9383b20f28358e8c0fcf7a4545219b5218caaf57d7dbdf93f6efb000e8d2ad135f79cabc9bfae9b33e4db37bd1fd2ba68e351523452e882f86f0ed80e

Download Submit
memory/1404-10-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/2036-1-0x0000000002E10000-0x0000000002F10000-memory.dmp

Filesize
1024KB

Download
memory/2036-2-0x0000000002F50000-0x0000000002F63000-memory.dmp

Filesize
76KB

Download
memory/2036-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2036-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2036-12-0x0000000002F50000-0x0000000002F63000-memory.dmp

Filesize
76KB

Download
memory/2036-11-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/3608-8-0x0000000000BA0000-0x0000000000BB5000-memory.dmp

Filesize
84KB

Download
memory/3608-14-0x0000000000BA0000-0x0000000000BB5000-memory.dmp

Filesize
84KB

Download
memory/3608-15-0x0000000000BA0000-0x0000000000BB5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads