tofsee | d89b5b4cb51017fe20af1e97e2e361750e9fcdc287b7fce99065b552226497af

General

Target

2025-01-31_220d68c1d332753c1d9bb34d47f66739_mafia.exe
Size

10.1MB
MD5

220d68c1d332753c1d9bb34d47f66739
SHA1

446daa197e7347902249fbac629ab9d132afd08b
SHA256

d89b5b4cb51017fe20af1e97e2e361750e9fcdc287b7fce99065b552226497af
SHA512

bacc9c6342c1beb70bf7832e45b2280d815021d1cee45ea8f91846c2e80c1b2291babe4c91b2569ec8405c982d7997fcc430d7004bfcff9dfcb26dd287c8f6fb
SSDEEP

24576:MEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZd:Jfot

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
3696	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\ixbvxpmv\ImagePath = "C:\\Windows\\SysWOW64\\ixbvxpmv\\ezdvlwyw.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-1-5-21-1412605595-2147700071-3468511006-1000\Control Panel\International\Geo\Nation	2025-01-31_220d68c1d332753c1d9bb34d47f66739_mafia.exe

Deletes itself 1 IoCs

pid	Process
4536	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3860	ezdvlwyw.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3860 set thread context of 4536	3860	ezdvlwyw.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
1696	sc.exe
4416	sc.exe
3088	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
1136	2952	WerFault.exe	81
4504	3860	WerFault.exe	95

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	ezdvlwyw.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-31_220d68c1d332753c1d9bb34d47f66739_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	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2952 wrote to memory of 5088	2952	2025-01-31_220d68c1d332753c1d9bb34d47f66739_mafia.exe	85
PID 2952 wrote to memory of 5088	2952	2025-01-31_220d68c1d332753c1d9bb34d47f66739_mafia.exe	85
PID 2952 wrote to memory of 5088	2952	2025-01-31_220d68c1d332753c1d9bb34d47f66739_mafia.exe	85
PID 2952 wrote to memory of 4196	2952	2025-01-31_220d68c1d332753c1d9bb34d47f66739_mafia.exe	87
PID 2952 wrote to memory of 4196	2952	2025-01-31_220d68c1d332753c1d9bb34d47f66739_mafia.exe	87
PID 2952 wrote to memory of 4196	2952	2025-01-31_220d68c1d332753c1d9bb34d47f66739_mafia.exe	87
PID 2952 wrote to memory of 1696	2952	2025-01-31_220d68c1d332753c1d9bb34d47f66739_mafia.exe	89
PID 2952 wrote to memory of 1696	2952	2025-01-31_220d68c1d332753c1d9bb34d47f66739_mafia.exe	89
PID 2952 wrote to memory of 1696	2952	2025-01-31_220d68c1d332753c1d9bb34d47f66739_mafia.exe	89
PID 2952 wrote to memory of 4416	2952	2025-01-31_220d68c1d332753c1d9bb34d47f66739_mafia.exe	91
PID 2952 wrote to memory of 4416	2952	2025-01-31_220d68c1d332753c1d9bb34d47f66739_mafia.exe	91
PID 2952 wrote to memory of 4416	2952	2025-01-31_220d68c1d332753c1d9bb34d47f66739_mafia.exe	91
PID 2952 wrote to memory of 3088	2952	2025-01-31_220d68c1d332753c1d9bb34d47f66739_mafia.exe	93
PID 2952 wrote to memory of 3088	2952	2025-01-31_220d68c1d332753c1d9bb34d47f66739_mafia.exe	93
PID 2952 wrote to memory of 3088	2952	2025-01-31_220d68c1d332753c1d9bb34d47f66739_mafia.exe	93
PID 2952 wrote to memory of 3696	2952	2025-01-31_220d68c1d332753c1d9bb34d47f66739_mafia.exe	96
PID 2952 wrote to memory of 3696	2952	2025-01-31_220d68c1d332753c1d9bb34d47f66739_mafia.exe	96
PID 2952 wrote to memory of 3696	2952	2025-01-31_220d68c1d332753c1d9bb34d47f66739_mafia.exe	96
PID 3860 wrote to memory of 4536	3860	ezdvlwyw.exe	102
PID 3860 wrote to memory of 4536	3860	ezdvlwyw.exe	102
PID 3860 wrote to memory of 4536	3860	ezdvlwyw.exe	102
PID 3860 wrote to memory of 4536	3860	ezdvlwyw.exe	102
PID 3860 wrote to memory of 4536	3860	ezdvlwyw.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-01-31_220d68c1d332753c1d9bb34d47f66739_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-31_220d68c1d332753c1d9bb34d47f66739_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2952
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ixbvxpmv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5088
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ezdvlwyw.exe" C:\Windows\SysWOW64\ixbvxpmv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4196
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ixbvxpmv binPath= "C:\Windows\SysWOW64\ixbvxpmv\ezdvlwyw.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-31_220d68c1d332753c1d9bb34d47f66739_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1696
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ixbvxpmv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4416
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ixbvxpmv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3088
- 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:3696
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2952 -s 1244
  2⤵
  - Program crash
  PID:1136

C:\Windows\SysWOW64\ixbvxpmv\ezdvlwyw.exe
C:\Windows\SysWOW64\ixbvxpmv\ezdvlwyw.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-31_220d68c1d332753c1d9bb34d47f66739_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3860
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4536
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3860 -s 512
  2⤵
  - Program crash
  PID:4504

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 2952 -ip 2952
1⤵
PID:3132

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 3860 -ip 3860
1⤵
PID:4332

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\ezdvlwyw.exe

Filesize
12.2MB

MD5
1ecdc64e13ac3645aceeef14424543ee

SHA1
572a6ba71eeaf6d8de1ff657d412c29fc9ca4e83

SHA256
c52201baf906660e0d0036b59c35d0d51dd81f75ba5656d19e88245e7ced0ae4

SHA512
397d74ece7455f39169edd0774ee44efdf564c87b33fc5f2bcc6331e3c4096a30a92faa59ab74d94a26f6615d59cdf9c4c75a36206cd9d5e850a5af2e4bdaded

Download Submit
memory/2952-8-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/2952-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2952-2-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/2952-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2952-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2952-1-0x00000000004F0000-0x00000000005F0000-memory.dmp

Filesize
1024KB

Download
memory/3860-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3860-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3860-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3860-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4536-14-0x0000000000C50000-0x0000000000C65000-memory.dmp

Filesize
84KB

Download
memory/4536-16-0x0000000000C50000-0x0000000000C65000-memory.dmp

Filesize
84KB

Download
memory/4536-17-0x0000000000C50000-0x0000000000C65000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads