tofsee | 4b473923cc919a95d186f942b64234135bdd394d807125b5bbe156880468cd1d

General

Target

2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe
Size

12.8MB
MD5

c3e93ca2e3da9a3312d9135707fe915c
SHA1

35f259f2b8460d68f3620c13cdb94fbb105b7897
SHA256

4b473923cc919a95d186f942b64234135bdd394d807125b5bbe156880468cd1d
SHA512

e4eafa3e69784456cb0d0fde4edbee2a933d05af833701e0c0e2f22e872396ae7306f2822996be883d187c0ca0017642596a888d1e1f42ca332feaee40791947
SSDEEP

24576:PEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZT:Mfotx

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
4756	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\milmbsol\ImagePath = "C:\\Windows\\SysWOW64\\milmbsol\\jiwymjkc.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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe

Deletes itself 1 IoCs

pid	Process
4544	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2012	jiwymjkc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2012 set thread context of 4544	2012	jiwymjkc.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
3036	sc.exe
4780	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
1740	4520	WerFault.exe	81
4528	2012	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jiwymjkc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4520 wrote to memory of 4568	4520	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	82
PID 4520 wrote to memory of 4568	4520	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	82
PID 4520 wrote to memory of 4568	4520	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	82
PID 4520 wrote to memory of 4860	4520	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	84
PID 4520 wrote to memory of 4860	4520	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	84
PID 4520 wrote to memory of 4860	4520	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	84
PID 4520 wrote to memory of 3036	4520	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	86
PID 4520 wrote to memory of 3036	4520	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	86
PID 4520 wrote to memory of 3036	4520	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	86
PID 4520 wrote to memory of 4780	4520	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	88
PID 4520 wrote to memory of 4780	4520	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	88
PID 4520 wrote to memory of 4780	4520	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	88
PID 4520 wrote to memory of 5096	4520	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	90
PID 4520 wrote to memory of 5096	4520	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	90
PID 4520 wrote to memory of 5096	4520	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	90
PID 4520 wrote to memory of 4756	4520	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	93
PID 4520 wrote to memory of 4756	4520	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	93
PID 4520 wrote to memory of 4756	4520	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	93
PID 2012 wrote to memory of 4544	2012	jiwymjkc.exe	102
PID 2012 wrote to memory of 4544	2012	jiwymjkc.exe	102
PID 2012 wrote to memory of 4544	2012	jiwymjkc.exe	102
PID 2012 wrote to memory of 4544	2012	jiwymjkc.exe	102
PID 2012 wrote to memory of 4544	2012	jiwymjkc.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4520
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\milmbsol\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4568
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jiwymjkc.exe" C:\Windows\SysWOW64\milmbsol\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4860
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create milmbsol binPath= "C:\Windows\SysWOW64\milmbsol\jiwymjkc.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3036
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description milmbsol "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4780
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start milmbsol
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5096
- 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:4756
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4520 -s 1196
  2⤵
  - Program crash
  PID:1740

C:\Windows\SysWOW64\milmbsol\jiwymjkc.exe
C:\Windows\SysWOW64\milmbsol\jiwymjkc.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2012
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4544
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2012 -s 560
  2⤵
  - Program crash
  PID:4528

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4520 -ip 4520
1⤵
PID:2284

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 2012 -ip 2012
1⤵
PID:2624

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

Loading Replay Monitor...

Downloads

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

Filesize
13.3MB

MD5
9a556542bc2703c692e6bdcecc2073ff

SHA1
c65965b94db96786b4f289f0e4ccdf9086b9b086

SHA256
e467302aeb84bf5762774ea193ac3de92f6d904b8d1b85d4820e300a7952ba8e

SHA512
21106667fe1d8d48e810fb23dd21061b2a23746c820f4ae35268e7e62b1259f07bbb3ebc76a7c11f288160173099e8c7f6bf188a3f03d580c4c3ec07f8b48f17

Download Submit
memory/2012-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2012-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2012-17-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4520-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4520-2-0x0000000000520000-0x0000000000533000-memory.dmp

Filesize
76KB

Download
memory/4520-8-0x0000000000520000-0x0000000000533000-memory.dmp

Filesize
76KB

Download
memory/4520-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4520-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4520-1-0x0000000000770000-0x0000000000870000-memory.dmp

Filesize
1024KB

Download
memory/4544-13-0x00000000012D0000-0x00000000012E5000-memory.dmp

Filesize
84KB

Download
memory/4544-15-0x00000000012D0000-0x00000000012E5000-memory.dmp

Filesize
84KB

Download
memory/4544-16-0x00000000012D0000-0x00000000012E5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads