tofsee | d42784f3215554b90c84380cbaec443685eeb15b109d170a935a7d6352bf66a3

General

Target

2025-01-31_19d42f70cf2a641da8785c91e58511dc_mafia.exe
Size

13.7MB
MD5

19d42f70cf2a641da8785c91e58511dc
SHA1

f5586aeaf12a883d755b214f70651cdd74b574b2
SHA256

d42784f3215554b90c84380cbaec443685eeb15b109d170a935a7d6352bf66a3
SHA512

5e565ed3a87500568d4e9c79d72632844e45794b211b807e7a154a9380e073ee9969c8b046e5c4d06425d4370b9f6281b8674aa84412834ccdd43a09b1fac6a5
SSDEEP

3072:FLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:oOMdRQr7OB0ypmMXnl8XEPM3noSWOC

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
4024	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\dhlpbejx\ImagePath = "C:\\Windows\\SysWOW64\\dhlpbejx\\vyeynyjp.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-1-5-21-4174397412-4125106315-2776226590-1000\Control Panel\International\Geo\Nation	2025-01-31_19d42f70cf2a641da8785c91e58511dc_mafia.exe

Deletes itself 1 IoCs

pid	Process
4368	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
408	vyeynyjp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 408 set thread context of 4368	408	vyeynyjp.exe	104

Launches sc.exe 3 IoCs

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

pid	Process
4924	sc.exe
912	sc.exe
644	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
1928	4484	WerFault.exe	85
2760	408	WerFault.exe	98

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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-31_19d42f70cf2a641da8785c91e58511dc_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	netsh.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	vyeynyjp.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4484 wrote to memory of 2336	4484	2025-01-31_19d42f70cf2a641da8785c91e58511dc_mafia.exe	88
PID 4484 wrote to memory of 2336	4484	2025-01-31_19d42f70cf2a641da8785c91e58511dc_mafia.exe	88
PID 4484 wrote to memory of 2336	4484	2025-01-31_19d42f70cf2a641da8785c91e58511dc_mafia.exe	88
PID 4484 wrote to memory of 4032	4484	2025-01-31_19d42f70cf2a641da8785c91e58511dc_mafia.exe	90
PID 4484 wrote to memory of 4032	4484	2025-01-31_19d42f70cf2a641da8785c91e58511dc_mafia.exe	90
PID 4484 wrote to memory of 4032	4484	2025-01-31_19d42f70cf2a641da8785c91e58511dc_mafia.exe	90
PID 4484 wrote to memory of 4924	4484	2025-01-31_19d42f70cf2a641da8785c91e58511dc_mafia.exe	92
PID 4484 wrote to memory of 4924	4484	2025-01-31_19d42f70cf2a641da8785c91e58511dc_mafia.exe	92
PID 4484 wrote to memory of 4924	4484	2025-01-31_19d42f70cf2a641da8785c91e58511dc_mafia.exe	92
PID 4484 wrote to memory of 912	4484	2025-01-31_19d42f70cf2a641da8785c91e58511dc_mafia.exe	94
PID 4484 wrote to memory of 912	4484	2025-01-31_19d42f70cf2a641da8785c91e58511dc_mafia.exe	94
PID 4484 wrote to memory of 912	4484	2025-01-31_19d42f70cf2a641da8785c91e58511dc_mafia.exe	94
PID 4484 wrote to memory of 644	4484	2025-01-31_19d42f70cf2a641da8785c91e58511dc_mafia.exe	96
PID 4484 wrote to memory of 644	4484	2025-01-31_19d42f70cf2a641da8785c91e58511dc_mafia.exe	96
PID 4484 wrote to memory of 644	4484	2025-01-31_19d42f70cf2a641da8785c91e58511dc_mafia.exe	96
PID 4484 wrote to memory of 4024	4484	2025-01-31_19d42f70cf2a641da8785c91e58511dc_mafia.exe	99
PID 4484 wrote to memory of 4024	4484	2025-01-31_19d42f70cf2a641da8785c91e58511dc_mafia.exe	99
PID 4484 wrote to memory of 4024	4484	2025-01-31_19d42f70cf2a641da8785c91e58511dc_mafia.exe	99
PID 408 wrote to memory of 4368	408	vyeynyjp.exe	104
PID 408 wrote to memory of 4368	408	vyeynyjp.exe	104
PID 408 wrote to memory of 4368	408	vyeynyjp.exe	104
PID 408 wrote to memory of 4368	408	vyeynyjp.exe	104
PID 408 wrote to memory of 4368	408	vyeynyjp.exe	104

C:\Users\Admin\AppData\Local\Temp\2025-01-31_19d42f70cf2a641da8785c91e58511dc_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-31_19d42f70cf2a641da8785c91e58511dc_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4484
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dhlpbejx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2336
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vyeynyjp.exe" C:\Windows\SysWOW64\dhlpbejx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4032
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create dhlpbejx binPath= "C:\Windows\SysWOW64\dhlpbejx\vyeynyjp.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-31_19d42f70cf2a641da8785c91e58511dc_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4924
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description dhlpbejx "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:912
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start dhlpbejx
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:644
- 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:4024
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4484 -s 892
  2⤵
  - Program crash
  PID:1928

C:\Windows\SysWOW64\dhlpbejx\vyeynyjp.exe
C:\Windows\SysWOW64\dhlpbejx\vyeynyjp.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-31_19d42f70cf2a641da8785c91e58511dc_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:408
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4368
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 408 -s 512
  2⤵
  - Program crash
  PID:2760

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4484 -ip 4484
1⤵
PID:2884

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 408 -ip 408
1⤵
PID:4676

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\vyeynyjp.exe

Filesize
10.2MB

MD5
b4a41ae916dff61b2479bf39db9fd2e2

SHA1
303db90b2be087296c21ec79ba930022895a1b5b

SHA256
caa11ed31ab4a54a0988276f7ae2c5c11f17be68c3826f85ab1c685abe867b82

SHA512
33c6b7a7c08325bfc0721d134628620d22496048880a4f70432d843fc03e68c8225f56b520a6b470a97bc4dc0fadca5087b2de9f2e0f787995e54d870bb8507a

Download Submit
memory/408-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/408-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/408-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/408-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4368-14-0x0000000000F00000-0x0000000000F15000-memory.dmp

Filesize
84KB

Download
memory/4368-16-0x0000000000F00000-0x0000000000F15000-memory.dmp

Filesize
84KB

Download
memory/4368-17-0x0000000000F00000-0x0000000000F15000-memory.dmp

Filesize
84KB

Download
memory/4484-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4484-2-0x0000000000520000-0x0000000000533000-memory.dmp

Filesize
76KB

Download
memory/4484-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4484-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4484-8-0x0000000000520000-0x0000000000533000-memory.dmp

Filesize
76KB

Download
memory/4484-1-0x0000000000560000-0x0000000000660000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads