tofsee | 12b1109b821b9695c766fa4413d64c46b537917dee1f1afb2a75ab6846b642c4

General

Target

2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe
Size

11.8MB
MD5

877c136c5b3187fdb39b619b352113bb
SHA1

8f012b1a114be7b9642a3c1d79b6149eeaf63c46
SHA256

12b1109b821b9695c766fa4413d64c46b537917dee1f1afb2a75ab6846b642c4
SHA512

6b54e2fafb13f43836b6e911eefceab89836ed939443bb3af3cf505d14212e91c83b871aee0ce00941e28f189dbff46abf832b1a84558e043e16a5f547805aee
SSDEEP

49152:JqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPn:JqtYc3

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
3628	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\kuxyccxb\ImagePath = "C:\\Windows\\SysWOW64\\kuxyccxb\\wfzewvqm.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	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe

Deletes itself 1 IoCs

pid	Process
1684	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1584	wfzewvqm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1584 set thread context of 1684	1584	wfzewvqm.exe	95

Launches sc.exe 3 IoCs

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

pid	Process
4476	sc.exe
396	sc.exe
3524	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
2616	1584	WerFault.exe	94
3864	4780	WerFault.exe	83

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wfzewvqm.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	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4780 wrote to memory of 5116	4780	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe	84
PID 4780 wrote to memory of 5116	4780	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe	84
PID 4780 wrote to memory of 5116	4780	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe	84
PID 4780 wrote to memory of 2660	4780	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe	86
PID 4780 wrote to memory of 2660	4780	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe	86
PID 4780 wrote to memory of 2660	4780	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe	86
PID 4780 wrote to memory of 4476	4780	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe	88
PID 4780 wrote to memory of 4476	4780	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe	88
PID 4780 wrote to memory of 4476	4780	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe	88
PID 4780 wrote to memory of 396	4780	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe	90
PID 4780 wrote to memory of 396	4780	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe	90
PID 4780 wrote to memory of 396	4780	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe	90
PID 4780 wrote to memory of 3524	4780	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe	92
PID 4780 wrote to memory of 3524	4780	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe	92
PID 4780 wrote to memory of 3524	4780	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe	92
PID 1584 wrote to memory of 1684	1584	wfzewvqm.exe	95
PID 1584 wrote to memory of 1684	1584	wfzewvqm.exe	95
PID 1584 wrote to memory of 1684	1584	wfzewvqm.exe	95
PID 1584 wrote to memory of 1684	1584	wfzewvqm.exe	95
PID 1584 wrote to memory of 1684	1584	wfzewvqm.exe	95
PID 4780 wrote to memory of 3628	4780	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe	98
PID 4780 wrote to memory of 3628	4780	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe	98
PID 4780 wrote to memory of 3628	4780	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe	98

C:\Users\Admin\AppData\Local\Temp\2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4780
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kuxyccxb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5116
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wfzewvqm.exe" C:\Windows\SysWOW64\kuxyccxb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2660
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create kuxyccxb binPath= "C:\Windows\SysWOW64\kuxyccxb\wfzewvqm.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4476
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description kuxyccxb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:396
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start kuxyccxb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3524
- 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:3628
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4780 -s 888
  2⤵
  - Program crash
  PID:3864

C:\Windows\SysWOW64\kuxyccxb\wfzewvqm.exe
C:\Windows\SysWOW64\kuxyccxb\wfzewvqm.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1584
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1684
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1584 -s 516
  2⤵
  - Program crash
  PID:2616

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1584 -ip 1584
1⤵
PID:5060

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4780 -ip 4780
1⤵
PID:3564

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\wfzewvqm.exe

Filesize
12.9MB

MD5
e5a12929f5d65bc993e6f64a4d90df2b

SHA1
81d489a42f9700a3c73b2f82998e0af94dd5aca4

SHA256
c385b1c37057ecd3e65d86f9841145c6583292d5b1977c47c98018a5f69c329c

SHA512
9b85e1cc70a36cea754711d9d05bbecc7a4abf9c5b8d941399d23d9648051bb8da7dbe834aec172596e95791c71dcabdeacfffaefaa08b2f1ca526401104f869

Download Submit
memory/1584-10-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/1684-8-0x00000000001C0000-0x00000000001D5000-memory.dmp

Filesize
84KB

Download
memory/1684-14-0x00000000001C0000-0x00000000001D5000-memory.dmp

Filesize
84KB

Download
memory/1684-15-0x00000000001C0000-0x00000000001D5000-memory.dmp

Filesize
84KB

Download
memory/4780-1-0x0000000002E50000-0x0000000002F50000-memory.dmp

Filesize
1024KB

Download
memory/4780-2-0x0000000002E10000-0x0000000002E23000-memory.dmp

Filesize
76KB

Download
memory/4780-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4780-12-0x0000000002E10000-0x0000000002E23000-memory.dmp

Filesize
76KB

Download
memory/4780-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4780-11-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads