tofsee | 9d259bcefc553fdc88ba449d2f43ccaf99bb32a8c60e61117a1b9fbde824bba3

General

Target

2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe
Size

14.4MB
MD5

0db1476a4c3fee73d3836036a076bfdd
SHA1

afc59f2b7ca2772330e9dbcd9776912d3a6bb043
SHA256

9d259bcefc553fdc88ba449d2f43ccaf99bb32a8c60e61117a1b9fbde824bba3
SHA512

9425d74c11d1eca8d87e6f8285e96c1a677561bc20cace49963fd1bd0d6e33d0b79ef592b1cd9c1528089b10f8b5a86969f59cb38eb72fa7d38808fb03b74ca4
SSDEEP

24576:YEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZN:Vfot

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
2376	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\eqqbptaw\ImagePath = "C:\\Windows\\SysWOW64\\eqqbptaw\\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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe

Deletes itself 1 IoCs

pid	Process
3000	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2716	vyeynyjp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2716 set thread context of 3000	2716	vyeynyjp.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
968	sc.exe
1968	sc.exe
2600	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
4548	2244	WerFault.exe	82
4948	2716	WerFault.exe	94

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	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vyeynyjp.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2244 wrote to memory of 4884	2244	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	84
PID 2244 wrote to memory of 4884	2244	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	84
PID 2244 wrote to memory of 4884	2244	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	84
PID 2244 wrote to memory of 1216	2244	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	86
PID 2244 wrote to memory of 1216	2244	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	86
PID 2244 wrote to memory of 1216	2244	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	86
PID 2244 wrote to memory of 968	2244	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	88
PID 2244 wrote to memory of 968	2244	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	88
PID 2244 wrote to memory of 968	2244	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	88
PID 2244 wrote to memory of 1968	2244	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	90
PID 2244 wrote to memory of 1968	2244	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	90
PID 2244 wrote to memory of 1968	2244	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	90
PID 2244 wrote to memory of 2600	2244	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	92
PID 2244 wrote to memory of 2600	2244	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	92
PID 2244 wrote to memory of 2600	2244	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	92
PID 2244 wrote to memory of 2376	2244	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	95
PID 2244 wrote to memory of 2376	2244	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	95
PID 2244 wrote to memory of 2376	2244	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	95
PID 2716 wrote to memory of 3000	2716	vyeynyjp.exe	101
PID 2716 wrote to memory of 3000	2716	vyeynyjp.exe	101
PID 2716 wrote to memory of 3000	2716	vyeynyjp.exe	101
PID 2716 wrote to memory of 3000	2716	vyeynyjp.exe	101
PID 2716 wrote to memory of 3000	2716	vyeynyjp.exe	101

C:\Users\Admin\AppData\Local\Temp\2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2244
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\eqqbptaw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4884
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vyeynyjp.exe" C:\Windows\SysWOW64\eqqbptaw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1216
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create eqqbptaw binPath= "C:\Windows\SysWOW64\eqqbptaw\vyeynyjp.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:968
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description eqqbptaw "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1968
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start eqqbptaw
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2600
- 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:2376
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2244 -s 1036
  2⤵
  - Program crash
  PID:4548

C:\Windows\SysWOW64\eqqbptaw\vyeynyjp.exe
C:\Windows\SysWOW64\eqqbptaw\vyeynyjp.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2716
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3000
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2716 -s 520
  2⤵
  - Program crash
  PID:4948

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2244 -ip 2244
1⤵
PID:4960

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 2716 -ip 2716
1⤵
PID:3428

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
12.8MB

MD5
6499a27aa885c287577812ec686c1f4d

SHA1
cda7f0ae675b485cd40f2486fe7067d109e236d4

SHA256
b2cf060f110cd4d8df2a461ad4d23b23e46a2e038657976a72e3449a303bb874

SHA512
e652313aae00aaf9eb422cdb2a06e6019242a89ba9a43604ee2c667801fbd057317756bdcc7acd1df88d470ccfaabeef3cad43749e83642eb44490a5a3f8881e

Download Submit
memory/2244-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2244-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2244-2-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/2244-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2244-8-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/2244-1-0x0000000000580000-0x0000000000680000-memory.dmp

Filesize
1024KB

Download
memory/2716-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2716-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2716-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2716-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3000-14-0x0000000000AA0000-0x0000000000AB5000-memory.dmp

Filesize
84KB

Download
memory/3000-16-0x0000000000AA0000-0x0000000000AB5000-memory.dmp

Filesize
84KB

Download
memory/3000-17-0x0000000000AA0000-0x0000000000AB5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads