tofsee | 8cd5fda34842dcbe5e8de07def2f60314e0864edf2a430aca7d0e79da715831f

General

Target

2024-12-31_4a2f911be17cbf9f739e2bc2019adc68_mafia.exe
Size

11.3MB
MD5

4a2f911be17cbf9f739e2bc2019adc68
SHA1

d03579045d42dbe47f1395707298ecb63d1928bd
SHA256

8cd5fda34842dcbe5e8de07def2f60314e0864edf2a430aca7d0e79da715831f
SHA512

54ed898eb0f6dd2a404788a23a504f9ea0ac3b25c68024a942150a1d29d777402fa7b8c7a2e0948d4d10faa6b10450b87f88f5e5ecfad728f5cff303aedba4b2
SSDEEP

3072:YLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:VOMdRQr7OB0ypmMXnl8XEPM3noSWOC

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
4664	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\wfijjli\ImagePath = "C:\\Windows\\SysWOW64\\wfijjli\\uwrxqdn.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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	2024-12-31_4a2f911be17cbf9f739e2bc2019adc68_mafia.exe

Deletes itself 1 IoCs

pid	Process
3544	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2524	uwrxqdn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2524 set thread context of 3544	2524	uwrxqdn.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
3332	sc.exe
3836	sc.exe
4860	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
4816	1160	WerFault.exe	82
3744	2524	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	2024-12-31_4a2f911be17cbf9f739e2bc2019adc68_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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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	uwrxqdn.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1160 wrote to memory of 3040	1160	2024-12-31_4a2f911be17cbf9f739e2bc2019adc68_mafia.exe	83
PID 1160 wrote to memory of 3040	1160	2024-12-31_4a2f911be17cbf9f739e2bc2019adc68_mafia.exe	83
PID 1160 wrote to memory of 3040	1160	2024-12-31_4a2f911be17cbf9f739e2bc2019adc68_mafia.exe	83
PID 1160 wrote to memory of 2148	1160	2024-12-31_4a2f911be17cbf9f739e2bc2019adc68_mafia.exe	85
PID 1160 wrote to memory of 2148	1160	2024-12-31_4a2f911be17cbf9f739e2bc2019adc68_mafia.exe	85
PID 1160 wrote to memory of 2148	1160	2024-12-31_4a2f911be17cbf9f739e2bc2019adc68_mafia.exe	85
PID 1160 wrote to memory of 3332	1160	2024-12-31_4a2f911be17cbf9f739e2bc2019adc68_mafia.exe	87
PID 1160 wrote to memory of 3332	1160	2024-12-31_4a2f911be17cbf9f739e2bc2019adc68_mafia.exe	87
PID 1160 wrote to memory of 3332	1160	2024-12-31_4a2f911be17cbf9f739e2bc2019adc68_mafia.exe	87
PID 1160 wrote to memory of 3836	1160	2024-12-31_4a2f911be17cbf9f739e2bc2019adc68_mafia.exe	89
PID 1160 wrote to memory of 3836	1160	2024-12-31_4a2f911be17cbf9f739e2bc2019adc68_mafia.exe	89
PID 1160 wrote to memory of 3836	1160	2024-12-31_4a2f911be17cbf9f739e2bc2019adc68_mafia.exe	89
PID 1160 wrote to memory of 4860	1160	2024-12-31_4a2f911be17cbf9f739e2bc2019adc68_mafia.exe	91
PID 1160 wrote to memory of 4860	1160	2024-12-31_4a2f911be17cbf9f739e2bc2019adc68_mafia.exe	91
PID 1160 wrote to memory of 4860	1160	2024-12-31_4a2f911be17cbf9f739e2bc2019adc68_mafia.exe	91
PID 1160 wrote to memory of 4664	1160	2024-12-31_4a2f911be17cbf9f739e2bc2019adc68_mafia.exe	94
PID 1160 wrote to memory of 4664	1160	2024-12-31_4a2f911be17cbf9f739e2bc2019adc68_mafia.exe	94
PID 1160 wrote to memory of 4664	1160	2024-12-31_4a2f911be17cbf9f739e2bc2019adc68_mafia.exe	94
PID 2524 wrote to memory of 3544	2524	uwrxqdn.exe	100
PID 2524 wrote to memory of 3544	2524	uwrxqdn.exe	100
PID 2524 wrote to memory of 3544	2524	uwrxqdn.exe	100
PID 2524 wrote to memory of 3544	2524	uwrxqdn.exe	100
PID 2524 wrote to memory of 3544	2524	uwrxqdn.exe	100

C:\Users\Admin\AppData\Local\Temp\2024-12-31_4a2f911be17cbf9f739e2bc2019adc68_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-31_4a2f911be17cbf9f739e2bc2019adc68_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1160
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wfijjli\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3040
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\uwrxqdn.exe" C:\Windows\SysWOW64\wfijjli\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2148
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create wfijjli binPath= "C:\Windows\SysWOW64\wfijjli\uwrxqdn.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-12-31_4a2f911be17cbf9f739e2bc2019adc68_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3332
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description wfijjli "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3836
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start wfijjli
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4860
- 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:4664
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1160 -s 1204
  2⤵
  - Program crash
  PID:4816

C:\Windows\SysWOW64\wfijjli\uwrxqdn.exe
C:\Windows\SysWOW64\wfijjli\uwrxqdn.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-12-31_4a2f911be17cbf9f739e2bc2019adc68_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2524
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3544
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2524 -s 516
  2⤵
  - Program crash
  PID:3744

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1160 -ip 1160
1⤵
PID:3440

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 2524 -ip 2524
1⤵
PID:3840

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\uwrxqdn.exe

Filesize
11.3MB

MD5
4a2f911be17cbf9f739e2bc2019adc68

SHA1
d03579045d42dbe47f1395707298ecb63d1928bd

SHA256
8cd5fda34842dcbe5e8de07def2f60314e0864edf2a430aca7d0e79da715831f

SHA512
54ed898eb0f6dd2a404788a23a504f9ea0ac3b25c68024a942150a1d29d777402fa7b8c7a2e0948d4d10faa6b10450b87f88f5e5ecfad728f5cff303aedba4b2

Download Submit
memory/1160-8-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/1160-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1160-1-0x0000000000770000-0x0000000000870000-memory.dmp

Filesize
1024KB

Download
memory/1160-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1160-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1160-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/2524-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2524-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2524-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2524-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3544-14-0x0000000000E00000-0x0000000000E15000-memory.dmp

Filesize
84KB

Download
memory/3544-16-0x0000000000E00000-0x0000000000E15000-memory.dmp

Filesize
84KB

Download
memory/3544-17-0x0000000000E00000-0x0000000000E15000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads