tofsee | 2a8fbd348c55e12602eebdca409072f519e701d39a61a550279df841f7c2dea7

General

Target

2025-02-01_82452d20398b276695b17e2342e084e5_mafia.exe
Size

10.5MB
MD5

82452d20398b276695b17e2342e084e5
SHA1

ba669e4ae302887d177029c3ba104412cf71ee3c
SHA256

2a8fbd348c55e12602eebdca409072f519e701d39a61a550279df841f7c2dea7
SHA512

c292e645b516cf8326a2b0bd88dd1e3dab2377a11d84e9dd0184ca489327ecade41e920887989ea8d296fdc53e3b0abfbd1d2bee6e1c23014b02ae7dd6817d31
SSDEEP

196608:0yXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX:JXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXn

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
3256	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\yoobpump\ImagePath = "C:\\Windows\\SysWOW64\\yoobpump\\gxtarquy.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	2025-02-01_82452d20398b276695b17e2342e084e5_mafia.exe

Deletes itself 1 IoCs

pid	Process
3708	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1636	gxtarquy.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1636 set thread context of 3708	1636	gxtarquy.exe	93

Launches sc.exe 3 IoCs

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

pid	Process
5008	sc.exe
1852	sc.exe
3616	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

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	2025-02-01_82452d20398b276695b17e2342e084e5_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gxtarquy.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	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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2208 wrote to memory of 3044	2208	2025-02-01_82452d20398b276695b17e2342e084e5_mafia.exe	82
PID 2208 wrote to memory of 3044	2208	2025-02-01_82452d20398b276695b17e2342e084e5_mafia.exe	82
PID 2208 wrote to memory of 3044	2208	2025-02-01_82452d20398b276695b17e2342e084e5_mafia.exe	82
PID 2208 wrote to memory of 2640	2208	2025-02-01_82452d20398b276695b17e2342e084e5_mafia.exe	84
PID 2208 wrote to memory of 2640	2208	2025-02-01_82452d20398b276695b17e2342e084e5_mafia.exe	84
PID 2208 wrote to memory of 2640	2208	2025-02-01_82452d20398b276695b17e2342e084e5_mafia.exe	84
PID 2208 wrote to memory of 5008	2208	2025-02-01_82452d20398b276695b17e2342e084e5_mafia.exe	86
PID 2208 wrote to memory of 5008	2208	2025-02-01_82452d20398b276695b17e2342e084e5_mafia.exe	86
PID 2208 wrote to memory of 5008	2208	2025-02-01_82452d20398b276695b17e2342e084e5_mafia.exe	86
PID 2208 wrote to memory of 1852	2208	2025-02-01_82452d20398b276695b17e2342e084e5_mafia.exe	88
PID 2208 wrote to memory of 1852	2208	2025-02-01_82452d20398b276695b17e2342e084e5_mafia.exe	88
PID 2208 wrote to memory of 1852	2208	2025-02-01_82452d20398b276695b17e2342e084e5_mafia.exe	88
PID 2208 wrote to memory of 3616	2208	2025-02-01_82452d20398b276695b17e2342e084e5_mafia.exe	90
PID 2208 wrote to memory of 3616	2208	2025-02-01_82452d20398b276695b17e2342e084e5_mafia.exe	90
PID 2208 wrote to memory of 3616	2208	2025-02-01_82452d20398b276695b17e2342e084e5_mafia.exe	90
PID 1636 wrote to memory of 3708	1636	gxtarquy.exe	93
PID 1636 wrote to memory of 3708	1636	gxtarquy.exe	93
PID 1636 wrote to memory of 3708	1636	gxtarquy.exe	93
PID 1636 wrote to memory of 3708	1636	gxtarquy.exe	93
PID 1636 wrote to memory of 3708	1636	gxtarquy.exe	93
PID 2208 wrote to memory of 3256	2208	2025-02-01_82452d20398b276695b17e2342e084e5_mafia.exe	94
PID 2208 wrote to memory of 3256	2208	2025-02-01_82452d20398b276695b17e2342e084e5_mafia.exe	94
PID 2208 wrote to memory of 3256	2208	2025-02-01_82452d20398b276695b17e2342e084e5_mafia.exe	94

C:\Users\Admin\AppData\Local\Temp\2025-02-01_82452d20398b276695b17e2342e084e5_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_82452d20398b276695b17e2342e084e5_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2208
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yoobpump\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3044
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gxtarquy.exe" C:\Windows\SysWOW64\yoobpump\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2640
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create yoobpump binPath= "C:\Windows\SysWOW64\yoobpump\gxtarquy.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_82452d20398b276695b17e2342e084e5_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5008
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description yoobpump "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1852
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start yoobpump
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3616
- 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:3256

C:\Windows\SysWOW64\yoobpump\gxtarquy.exe
C:\Windows\SysWOW64\yoobpump\gxtarquy.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_82452d20398b276695b17e2342e084e5_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1636
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3708

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\gxtarquy.exe

Filesize
14.9MB

MD5
6af5fdb346f08ca4f261d92368534b8e

SHA1
7b4c5515f114aeae55b7182d06bb13e19b738880

SHA256
b38b04a99d63c8a2a9028860b36a2ebf9e275e8c825836505d48b7ddb0b8dbfd

SHA512
4034862574728e4b6fcf150089f056befcd26a9409f24f1e25aa10f0ac783331f7ab31c20ee8b466e3913c7bb0c6e76d6217feb1e5b8ea86b4cd26046d1449da

Download Submit
memory/1636-17-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/1636-8-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/1636-9-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/1636-10-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2208-19-0x0000000000780000-0x0000000000793000-memory.dmp

Filesize
76KB

Download
memory/2208-14-0x00000000007F0000-0x00000000008F0000-memory.dmp

Filesize
1024KB

Download
memory/2208-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2208-1-0x00000000007F0000-0x00000000008F0000-memory.dmp

Filesize
1024KB

Download
memory/2208-20-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2208-2-0x0000000000780000-0x0000000000793000-memory.dmp

Filesize
76KB

Download
memory/2208-18-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3708-15-0x00000000012D0000-0x00000000012E5000-memory.dmp

Filesize
84KB

Download
memory/3708-11-0x00000000012D0000-0x00000000012E5000-memory.dmp

Filesize
84KB

Download
memory/3708-21-0x00000000012D0000-0x00000000012E5000-memory.dmp

Filesize
84KB

Download
memory/3708-22-0x00000000012D0000-0x00000000012E5000-memory.dmp

Filesize
84KB

Download
memory/3708-23-0x00000000012D0000-0x00000000012E5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads