tofsee | 2617e0696091241eff473df91d50b96033d6b0b2af79e47e50503b42ea53f7c0

General

Target

2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe
Size

14.5MB
MD5

de0805035b3a9aa55f09883322888394
SHA1

392914c76884aaf03d6c27766cec5f0ab12d6877
SHA256

2617e0696091241eff473df91d50b96033d6b0b2af79e47e50503b42ea53f7c0
SHA512

332d26c390db347f4f0ce5bfdc667dc7c080a25e0aa962ae2198f44934e45d8e7ea76b9c2d857f45be4b0dc1a281f9c5ace4177c59bf5f8aa040109c676f3ff8
SSDEEP

6144:bLQ1p/2p5e+D2jFHO+iZoy6u9FlfrXEz9NQNQNQNQNQNQNQNQNQNQNQNQNQNQNQY:wTYe+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
4084	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\vhrpwugr\ImagePath = "C:\\Windows\\SysWOW64\\vhrpwugr\\kgyyvkjx.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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe

Deletes itself 1 IoCs

pid	Process
3860	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
740	kgyyvkjx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 740 set thread context of 3860	740	kgyyvkjx.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
4856	sc.exe
4288	sc.exe
856	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
4580	3784	WerFault.exe	82
1008	740	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	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	kgyyvkjx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3784 wrote to memory of 3376	3784	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	83
PID 3784 wrote to memory of 3376	3784	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	83
PID 3784 wrote to memory of 3376	3784	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	83
PID 3784 wrote to memory of 2144	3784	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	85
PID 3784 wrote to memory of 2144	3784	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	85
PID 3784 wrote to memory of 2144	3784	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	85
PID 3784 wrote to memory of 4856	3784	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	87
PID 3784 wrote to memory of 4856	3784	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	87
PID 3784 wrote to memory of 4856	3784	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	87
PID 3784 wrote to memory of 4288	3784	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	89
PID 3784 wrote to memory of 4288	3784	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	89
PID 3784 wrote to memory of 4288	3784	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	89
PID 3784 wrote to memory of 856	3784	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	91
PID 3784 wrote to memory of 856	3784	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	91
PID 3784 wrote to memory of 856	3784	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	91
PID 3784 wrote to memory of 4084	3784	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	94
PID 3784 wrote to memory of 4084	3784	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	94
PID 3784 wrote to memory of 4084	3784	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	94
PID 740 wrote to memory of 3860	740	kgyyvkjx.exe	100
PID 740 wrote to memory of 3860	740	kgyyvkjx.exe	100
PID 740 wrote to memory of 3860	740	kgyyvkjx.exe	100
PID 740 wrote to memory of 3860	740	kgyyvkjx.exe	100
PID 740 wrote to memory of 3860	740	kgyyvkjx.exe	100

C:\Users\Admin\AppData\Local\Temp\2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3784
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vhrpwugr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3376
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kgyyvkjx.exe" C:\Windows\SysWOW64\vhrpwugr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2144
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create vhrpwugr binPath= "C:\Windows\SysWOW64\vhrpwugr\kgyyvkjx.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4856
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description vhrpwugr "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4288
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start vhrpwugr
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:856
- 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:4084
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3784 -s 1280
  2⤵
  - Program crash
  PID:4580

C:\Windows\SysWOW64\vhrpwugr\kgyyvkjx.exe
C:\Windows\SysWOW64\vhrpwugr\kgyyvkjx.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:740
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3860
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 740 -s 528
  2⤵
  - Program crash
  PID:1008

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 3784 -ip 3784
1⤵
PID:3244

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 740 -ip 740
1⤵
PID:3992

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\kgyyvkjx.exe

Filesize
14.7MB

MD5
ecf8ea102db83fda2d278ec3bc52632c

SHA1
18b4b8fc10ced4e6c0ee4ef10f4ff8bca1ba9c87

SHA256
a7b030b6468a980632f6e5707b17e44f95cb0fbe42a49015d704d1e6cac3ec5d

SHA512
f4187f1064c2c1cf0edb8874a04406081ed607e56424be764ea0b470a4b1efc60d22f44166d79f4ffb4d90a6b17da8f0abd946691aba004ca2a3be7675571ec6

Download Submit
memory/740-8-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/740-16-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/740-9-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/3784-11-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/3784-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3784-12-0x00000000005E0000-0x00000000005F3000-memory.dmp

Filesize
76KB

Download
memory/3784-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3784-1-0x0000000000820000-0x0000000000920000-memory.dmp

Filesize
1024KB

Download
memory/3784-2-0x00000000005E0000-0x00000000005F3000-memory.dmp

Filesize
76KB

Download
memory/3860-10-0x00000000006B0000-0x00000000006C5000-memory.dmp

Filesize
84KB

Download
memory/3860-17-0x00000000006B0000-0x00000000006C5000-memory.dmp

Filesize
84KB

Download
memory/3860-18-0x00000000006B0000-0x00000000006C5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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