tofsee | 2ebbb4ef6e9f5211032e4bad41c177a78da76bdcf758763ac303b4d83e337101

General

Target

2024-12-29_a96468e58b3466b20b0c3ae964bad440_mafia.exe
Size

14.0MB
MD5

a96468e58b3466b20b0c3ae964bad440
SHA1

0315c00f420825d06c91fe193dbfa8ed993b591d
SHA256

2ebbb4ef6e9f5211032e4bad41c177a78da76bdcf758763ac303b4d83e337101
SHA512

0d303dbf1b87bb3247e7c834cf169d5a30ee8cc4b0a607fd93fad78a06c0d124e95d7bea6099cb81cbad688294c2bd41c4ef2ceec5a9af1d184ee1984b8c47b4
SSDEEP

3072:MLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:pOMdRQr7OB0ypmMXnl8XEPM3noSWOC

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
948	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\okelozuj\ImagePath = "C:\\Windows\\SysWOW64\\okelozuj\\enhmedyu.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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	2024-12-29_a96468e58b3466b20b0c3ae964bad440_mafia.exe

Deletes itself 1 IoCs

pid	Process
3536	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1256	enhmedyu.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1256 set thread context of 3536	1256	enhmedyu.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
4820	sc.exe
2792	sc.exe
5096	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
2976	2968	WerFault.exe	81
4596	1256	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	2024-12-29_a96468e58b3466b20b0c3ae964bad440_mafia.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	enhmedyu.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 2968 wrote to memory of 3572	2968	2024-12-29_a96468e58b3466b20b0c3ae964bad440_mafia.exe	82
PID 2968 wrote to memory of 3572	2968	2024-12-29_a96468e58b3466b20b0c3ae964bad440_mafia.exe	82
PID 2968 wrote to memory of 3572	2968	2024-12-29_a96468e58b3466b20b0c3ae964bad440_mafia.exe	82
PID 2968 wrote to memory of 4996	2968	2024-12-29_a96468e58b3466b20b0c3ae964bad440_mafia.exe	84
PID 2968 wrote to memory of 4996	2968	2024-12-29_a96468e58b3466b20b0c3ae964bad440_mafia.exe	84
PID 2968 wrote to memory of 4996	2968	2024-12-29_a96468e58b3466b20b0c3ae964bad440_mafia.exe	84
PID 2968 wrote to memory of 5096	2968	2024-12-29_a96468e58b3466b20b0c3ae964bad440_mafia.exe	86
PID 2968 wrote to memory of 5096	2968	2024-12-29_a96468e58b3466b20b0c3ae964bad440_mafia.exe	86
PID 2968 wrote to memory of 5096	2968	2024-12-29_a96468e58b3466b20b0c3ae964bad440_mafia.exe	86
PID 2968 wrote to memory of 4820	2968	2024-12-29_a96468e58b3466b20b0c3ae964bad440_mafia.exe	88
PID 2968 wrote to memory of 4820	2968	2024-12-29_a96468e58b3466b20b0c3ae964bad440_mafia.exe	88
PID 2968 wrote to memory of 4820	2968	2024-12-29_a96468e58b3466b20b0c3ae964bad440_mafia.exe	88
PID 2968 wrote to memory of 2792	2968	2024-12-29_a96468e58b3466b20b0c3ae964bad440_mafia.exe	90
PID 2968 wrote to memory of 2792	2968	2024-12-29_a96468e58b3466b20b0c3ae964bad440_mafia.exe	90
PID 2968 wrote to memory of 2792	2968	2024-12-29_a96468e58b3466b20b0c3ae964bad440_mafia.exe	90
PID 2968 wrote to memory of 948	2968	2024-12-29_a96468e58b3466b20b0c3ae964bad440_mafia.exe	93
PID 2968 wrote to memory of 948	2968	2024-12-29_a96468e58b3466b20b0c3ae964bad440_mafia.exe	93
PID 2968 wrote to memory of 948	2968	2024-12-29_a96468e58b3466b20b0c3ae964bad440_mafia.exe	93
PID 1256 wrote to memory of 3536	1256	enhmedyu.exe	98
PID 1256 wrote to memory of 3536	1256	enhmedyu.exe	98
PID 1256 wrote to memory of 3536	1256	enhmedyu.exe	98
PID 1256 wrote to memory of 3536	1256	enhmedyu.exe	98
PID 1256 wrote to memory of 3536	1256	enhmedyu.exe	98

C:\Users\Admin\AppData\Local\Temp\2024-12-29_a96468e58b3466b20b0c3ae964bad440_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-29_a96468e58b3466b20b0c3ae964bad440_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2968
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\okelozuj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3572
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\enhmedyu.exe" C:\Windows\SysWOW64\okelozuj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4996
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create okelozuj binPath= "C:\Windows\SysWOW64\okelozuj\enhmedyu.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-12-29_a96468e58b3466b20b0c3ae964bad440_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5096
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description okelozuj "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4820
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start okelozuj
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2792
- 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:948
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2968 -s 592
  2⤵
  - Program crash
  PID:2976

C:\Windows\SysWOW64\okelozuj\enhmedyu.exe
C:\Windows\SysWOW64\okelozuj\enhmedyu.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-12-29_a96468e58b3466b20b0c3ae964bad440_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1256
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3536
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1256 -s 512
  2⤵
  - Program crash
  PID:4596

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 2968 -ip 2968
1⤵
PID:2940

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1256 -ip 1256
1⤵
PID:4308

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\enhmedyu.exe

Filesize
13.3MB

MD5
df9e6c14f062b4aa5cd111047e5ee69a

SHA1
3f008c5c85dc97738389c87bf859c31fe4235a10

SHA256
ad97d79a372f7962207415bca104c4a50a79f3cabdfa8667aa44e11fcd5c6e2f

SHA512
bd7a652911532eecc162b6650ced29ab5b7445325e3b867bf0322c2bc988fcb35379a1dea8fffed1159a2ac82d72ffc5c5ccae223274a46abef89ffe99412d1c

Download Submit
memory/1256-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1256-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1256-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1256-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2968-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2968-1-0x0000000000690000-0x0000000000790000-memory.dmp

Filesize
1024KB

Download
memory/2968-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2968-8-0x0000000000670000-0x0000000000683000-memory.dmp

Filesize
76KB

Download
memory/2968-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2968-2-0x0000000000670000-0x0000000000683000-memory.dmp

Filesize
76KB

Download
memory/3536-14-0x0000000000C30000-0x0000000000C45000-memory.dmp

Filesize
84KB

Download
memory/3536-16-0x0000000000C30000-0x0000000000C45000-memory.dmp

Filesize
84KB

Download
memory/3536-17-0x0000000000C30000-0x0000000000C45000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads