tofsee | 83ea7631ee7a2647710983c83b0942c9ded55b4337ed635b3e5dd5f3ca2e01e2

General

Target

2025-02-03_e19b3e72ff5b9157d1636509198fdfda_mafia.exe
Size

12.6MB
MD5

e19b3e72ff5b9157d1636509198fdfda
SHA1

4a892bb3727ca87794aef9156e88c24cae2f82fb
SHA256

83ea7631ee7a2647710983c83b0942c9ded55b4337ed635b3e5dd5f3ca2e01e2
SHA512

f5504269aeede5e74418dc46beb09c0ea17eae481edac32ddd4c3d4e02824f44c6c2ad19aad1dedf5017652c94074818648a5d799e116a7252c3a88581ee9fd4
SSDEEP

3072:lLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:IOMdRQr7OB0ypmMXnl8XEPM3noSWOC

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
3336	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\zequiijy\ImagePath = "C:\\Windows\\SysWOW64\\zequiijy\\xcmhbnkm.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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	2025-02-03_e19b3e72ff5b9157d1636509198fdfda_mafia.exe

Deletes itself 1 IoCs

pid	Process
1832	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4180	xcmhbnkm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4180 set thread context of 1832	4180	xcmhbnkm.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
1268	sc.exe
3660	sc.exe
1704	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
4884	2388	WerFault.exe	81
4440	4180	WerFault.exe	92

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	2025-02-03_e19b3e72ff5b9157d1636509198fdfda_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	netsh.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	xcmhbnkm.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2388 wrote to memory of 4772	2388	2025-02-03_e19b3e72ff5b9157d1636509198fdfda_mafia.exe	82
PID 2388 wrote to memory of 4772	2388	2025-02-03_e19b3e72ff5b9157d1636509198fdfda_mafia.exe	82
PID 2388 wrote to memory of 4772	2388	2025-02-03_e19b3e72ff5b9157d1636509198fdfda_mafia.exe	82
PID 2388 wrote to memory of 1516	2388	2025-02-03_e19b3e72ff5b9157d1636509198fdfda_mafia.exe	84
PID 2388 wrote to memory of 1516	2388	2025-02-03_e19b3e72ff5b9157d1636509198fdfda_mafia.exe	84
PID 2388 wrote to memory of 1516	2388	2025-02-03_e19b3e72ff5b9157d1636509198fdfda_mafia.exe	84
PID 2388 wrote to memory of 3660	2388	2025-02-03_e19b3e72ff5b9157d1636509198fdfda_mafia.exe	86
PID 2388 wrote to memory of 3660	2388	2025-02-03_e19b3e72ff5b9157d1636509198fdfda_mafia.exe	86
PID 2388 wrote to memory of 3660	2388	2025-02-03_e19b3e72ff5b9157d1636509198fdfda_mafia.exe	86
PID 2388 wrote to memory of 1704	2388	2025-02-03_e19b3e72ff5b9157d1636509198fdfda_mafia.exe	88
PID 2388 wrote to memory of 1704	2388	2025-02-03_e19b3e72ff5b9157d1636509198fdfda_mafia.exe	88
PID 2388 wrote to memory of 1704	2388	2025-02-03_e19b3e72ff5b9157d1636509198fdfda_mafia.exe	88
PID 2388 wrote to memory of 1268	2388	2025-02-03_e19b3e72ff5b9157d1636509198fdfda_mafia.exe	90
PID 2388 wrote to memory of 1268	2388	2025-02-03_e19b3e72ff5b9157d1636509198fdfda_mafia.exe	90
PID 2388 wrote to memory of 1268	2388	2025-02-03_e19b3e72ff5b9157d1636509198fdfda_mafia.exe	90
PID 2388 wrote to memory of 3336	2388	2025-02-03_e19b3e72ff5b9157d1636509198fdfda_mafia.exe	93
PID 2388 wrote to memory of 3336	2388	2025-02-03_e19b3e72ff5b9157d1636509198fdfda_mafia.exe	93
PID 2388 wrote to memory of 3336	2388	2025-02-03_e19b3e72ff5b9157d1636509198fdfda_mafia.exe	93
PID 4180 wrote to memory of 1832	4180	xcmhbnkm.exe	100
PID 4180 wrote to memory of 1832	4180	xcmhbnkm.exe	100
PID 4180 wrote to memory of 1832	4180	xcmhbnkm.exe	100
PID 4180 wrote to memory of 1832	4180	xcmhbnkm.exe	100
PID 4180 wrote to memory of 1832	4180	xcmhbnkm.exe	100

C:\Users\Admin\AppData\Local\Temp\2025-02-03_e19b3e72ff5b9157d1636509198fdfda_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-03_e19b3e72ff5b9157d1636509198fdfda_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2388
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zequiijy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4772
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xcmhbnkm.exe" C:\Windows\SysWOW64\zequiijy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1516
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create zequiijy binPath= "C:\Windows\SysWOW64\zequiijy\xcmhbnkm.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-03_e19b3e72ff5b9157d1636509198fdfda_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3660
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description zequiijy "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1704
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start zequiijy
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1268
- 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:3336
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2388 -s 892
  2⤵
  - Program crash
  PID:4884

C:\Windows\SysWOW64\zequiijy\xcmhbnkm.exe
C:\Windows\SysWOW64\zequiijy\xcmhbnkm.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-03_e19b3e72ff5b9157d1636509198fdfda_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4180
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1832
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4180 -s 512
  2⤵
  - Program crash
  PID:4440

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 2388 -ip 2388
1⤵
PID:536

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 4180 -ip 4180
1⤵
PID:1460

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\xcmhbnkm.exe

Filesize
13.1MB

MD5
30d044d0cab8c0c7eb5c19c58bac9740

SHA1
05426d6cede1fea40c4d54a96d7ed6c805348d83

SHA256
5eb11641b7c2bb1eb3d302d6deb38347971b022d6311d40dad02a7b8b6f27ff0

SHA512
bebc6396a4788a2115f21a86909c3b75050b44514fdca80afaf2c69601bc906ddd5ef7ead1d7867ccc768583e1412789f9323d70153067622d1c4339f3914d16

Download Submit
memory/1832-14-0x0000000001250000-0x0000000001265000-memory.dmp

Filesize
84KB

Download
memory/1832-17-0x0000000001250000-0x0000000001265000-memory.dmp

Filesize
84KB

Download
memory/1832-16-0x0000000001250000-0x0000000001265000-memory.dmp

Filesize
84KB

Download
memory/2388-8-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/2388-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2388-1-0x00000000005D0000-0x00000000006D0000-memory.dmp

Filesize
1024KB

Download
memory/2388-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2388-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2388-2-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/4180-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4180-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4180-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4180-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads