tofsee | b7926cf92364746b29b6baac37d1c473e3f7166c6c126f0a6dd7fd16e267c0ee

General

Target

2025-01-31_99a86586ce92357554b176ac1613f8d9_mafia.exe
Size

13.6MB
MD5

99a86586ce92357554b176ac1613f8d9
SHA1

dd45e53e86738f93dd81633d64a47ec513258faf
SHA256

b7926cf92364746b29b6baac37d1c473e3f7166c6c126f0a6dd7fd16e267c0ee
SHA512

cdd656f75e80f41fd4e5075d30a13b92e71786cb2e89065802f2cf37db0c3ac9ce0e9ca2b3ea0d3dbbb783c2821169276d5dfe1f0c2d7880efb90e4c5d86a6f7
SSDEEP

6144:YLQ1p/2p5e+D2jFHO+iZoy6u9FlfrXEz9NQNQNQNQNQNQNQNQNQNQNQNQNQNQNQY:NTYe+D2jFu+iZoUFhAz

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
3496	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\vrghvbep\ImagePath = "C:\\Windows\\SysWOW64\\vrghvbep\\yplsjimq.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-1-5-21-4003209913-3868522715-854928974-1000\Control Panel\International\Geo\Nation	2025-01-31_99a86586ce92357554b176ac1613f8d9_mafia.exe

Deletes itself 1 IoCs

pid	Process
3264	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3796	yplsjimq.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3796 set thread context of 3264	3796	yplsjimq.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
4516	sc.exe
4324	sc.exe
3332	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
3632	3796	WerFault.exe	96
1708	4388	WerFault.exe	82

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	yplsjimq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-31_99a86586ce92357554b176ac1613f8d9_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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4388 wrote to memory of 3932	4388	2025-01-31_99a86586ce92357554b176ac1613f8d9_mafia.exe	86
PID 4388 wrote to memory of 3932	4388	2025-01-31_99a86586ce92357554b176ac1613f8d9_mafia.exe	86
PID 4388 wrote to memory of 3932	4388	2025-01-31_99a86586ce92357554b176ac1613f8d9_mafia.exe	86
PID 4388 wrote to memory of 3132	4388	2025-01-31_99a86586ce92357554b176ac1613f8d9_mafia.exe	88
PID 4388 wrote to memory of 3132	4388	2025-01-31_99a86586ce92357554b176ac1613f8d9_mafia.exe	88
PID 4388 wrote to memory of 3132	4388	2025-01-31_99a86586ce92357554b176ac1613f8d9_mafia.exe	88
PID 4388 wrote to memory of 4516	4388	2025-01-31_99a86586ce92357554b176ac1613f8d9_mafia.exe	90
PID 4388 wrote to memory of 4516	4388	2025-01-31_99a86586ce92357554b176ac1613f8d9_mafia.exe	90
PID 4388 wrote to memory of 4516	4388	2025-01-31_99a86586ce92357554b176ac1613f8d9_mafia.exe	90
PID 4388 wrote to memory of 4324	4388	2025-01-31_99a86586ce92357554b176ac1613f8d9_mafia.exe	92
PID 4388 wrote to memory of 4324	4388	2025-01-31_99a86586ce92357554b176ac1613f8d9_mafia.exe	92
PID 4388 wrote to memory of 4324	4388	2025-01-31_99a86586ce92357554b176ac1613f8d9_mafia.exe	92
PID 4388 wrote to memory of 3332	4388	2025-01-31_99a86586ce92357554b176ac1613f8d9_mafia.exe	94
PID 4388 wrote to memory of 3332	4388	2025-01-31_99a86586ce92357554b176ac1613f8d9_mafia.exe	94
PID 4388 wrote to memory of 3332	4388	2025-01-31_99a86586ce92357554b176ac1613f8d9_mafia.exe	94
PID 4388 wrote to memory of 3496	4388	2025-01-31_99a86586ce92357554b176ac1613f8d9_mafia.exe	97
PID 4388 wrote to memory of 3496	4388	2025-01-31_99a86586ce92357554b176ac1613f8d9_mafia.exe	97
PID 4388 wrote to memory of 3496	4388	2025-01-31_99a86586ce92357554b176ac1613f8d9_mafia.exe	97
PID 3796 wrote to memory of 3264	3796	yplsjimq.exe	100
PID 3796 wrote to memory of 3264	3796	yplsjimq.exe	100
PID 3796 wrote to memory of 3264	3796	yplsjimq.exe	100
PID 3796 wrote to memory of 3264	3796	yplsjimq.exe	100
PID 3796 wrote to memory of 3264	3796	yplsjimq.exe	100

C:\Users\Admin\AppData\Local\Temp\2025-01-31_99a86586ce92357554b176ac1613f8d9_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-31_99a86586ce92357554b176ac1613f8d9_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4388
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vrghvbep\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3932
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\yplsjimq.exe" C:\Windows\SysWOW64\vrghvbep\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3132
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create vrghvbep binPath= "C:\Windows\SysWOW64\vrghvbep\yplsjimq.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-31_99a86586ce92357554b176ac1613f8d9_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4516
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description vrghvbep "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4324
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start vrghvbep
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3332
- 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:3496
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4388 -s 1036
  2⤵
  - Program crash
  PID:1708

C:\Windows\SysWOW64\vrghvbep\yplsjimq.exe
C:\Windows\SysWOW64\vrghvbep\yplsjimq.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-31_99a86586ce92357554b176ac1613f8d9_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3796
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3264
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3796 -s 508
  2⤵
  - Program crash
  PID:3632

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4388 -ip 4388
1⤵
PID:4116

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 3796 -ip 3796
1⤵
PID:612

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\yplsjimq.exe

Filesize
12.6MB

MD5
89c2178cfae03d6b5e41cfcf473514e4

SHA1
db1fdecc7f0ff28d9edd8de3429d7233e04f084d

SHA256
687140237a7d132897b9b03d5d02a5d5614ecddae19e095c4435aa8e694c0e6d

SHA512
f1dc1520e697a88a84aac99de9ede1bd397956a8580b8be60739add8980a494e904f8468418ef95f7176c46f788ec83294624c89af61f1e731d80235d19e6128

Download Submit
memory/3264-11-0x0000000000140000-0x0000000000155000-memory.dmp

Filesize
84KB

Download
memory/3264-23-0x0000000000140000-0x0000000000155000-memory.dmp

Filesize
84KB

Download
memory/3264-22-0x0000000000140000-0x0000000000155000-memory.dmp

Filesize
84KB

Download
memory/3264-21-0x0000000000140000-0x0000000000155000-memory.dmp

Filesize
84KB

Download
memory/3264-15-0x0000000000140000-0x0000000000155000-memory.dmp

Filesize
84KB

Download
memory/3796-8-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/3796-9-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/3796-10-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/3796-17-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/4388-14-0x0000000000730000-0x0000000000830000-memory.dmp

Filesize
1024KB

Download
memory/4388-18-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/4388-19-0x0000000000510000-0x0000000000523000-memory.dmp

Filesize
76KB

Download
memory/4388-20-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4388-1-0x0000000000730000-0x0000000000830000-memory.dmp

Filesize
1024KB

Download
memory/4388-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4388-2-0x0000000000510000-0x0000000000523000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads