tofsee | b513bc873cb6846cd3957141af65e5f9a30d673fcc2d4ab7ef09938cdf5bc81d

General

Target

2025-01-11_cf1854207054c0fc2d20cc74a9eb818f_mafia.exe
Size

10.6MB
MD5

cf1854207054c0fc2d20cc74a9eb818f
SHA1

867e51bdfc3dfeaf1c644ba2c1400fe36a8d414d
SHA256

b513bc873cb6846cd3957141af65e5f9a30d673fcc2d4ab7ef09938cdf5bc81d
SHA512

e5eaf9c8cf7a57df4d1d5d3f14a104b9fd817a6e83903abb25d41d16a4665f12c88bbd8baf1eb46308ec53a704553ba5ca8e19e1179d4449343f4badd26b4e57
SSDEEP

24576:CpomTTN9ttttttttttttttttttttttttttttttttttttttttttttttttttttttt3:moo

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
2768	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\kxggyhea\ImagePath = "C:\\Windows\\SysWOW64\\kxggyhea\\rtounak.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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	2025-01-11_cf1854207054c0fc2d20cc74a9eb818f_mafia.exe

Deletes itself 1 IoCs

pid	Process
3828	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2400	rtounak.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2400 set thread context of 3828	2400	rtounak.exe	108

Launches sc.exe 3 IoCs

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

pid	Process
4920	sc.exe
4444	sc.exe
2212	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
5076	4172	WerFault.exe	83
1996	2400	WerFault.exe	95

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	2025-01-11_cf1854207054c0fc2d20cc74a9eb818f_mafia.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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	rtounak.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4172 wrote to memory of 228	4172	2025-01-11_cf1854207054c0fc2d20cc74a9eb818f_mafia.exe	85
PID 4172 wrote to memory of 228	4172	2025-01-11_cf1854207054c0fc2d20cc74a9eb818f_mafia.exe	85
PID 4172 wrote to memory of 228	4172	2025-01-11_cf1854207054c0fc2d20cc74a9eb818f_mafia.exe	85
PID 4172 wrote to memory of 3312	4172	2025-01-11_cf1854207054c0fc2d20cc74a9eb818f_mafia.exe	87
PID 4172 wrote to memory of 3312	4172	2025-01-11_cf1854207054c0fc2d20cc74a9eb818f_mafia.exe	87
PID 4172 wrote to memory of 3312	4172	2025-01-11_cf1854207054c0fc2d20cc74a9eb818f_mafia.exe	87
PID 4172 wrote to memory of 4920	4172	2025-01-11_cf1854207054c0fc2d20cc74a9eb818f_mafia.exe	89
PID 4172 wrote to memory of 4920	4172	2025-01-11_cf1854207054c0fc2d20cc74a9eb818f_mafia.exe	89
PID 4172 wrote to memory of 4920	4172	2025-01-11_cf1854207054c0fc2d20cc74a9eb818f_mafia.exe	89
PID 4172 wrote to memory of 4444	4172	2025-01-11_cf1854207054c0fc2d20cc74a9eb818f_mafia.exe	91
PID 4172 wrote to memory of 4444	4172	2025-01-11_cf1854207054c0fc2d20cc74a9eb818f_mafia.exe	91
PID 4172 wrote to memory of 4444	4172	2025-01-11_cf1854207054c0fc2d20cc74a9eb818f_mafia.exe	91
PID 4172 wrote to memory of 2212	4172	2025-01-11_cf1854207054c0fc2d20cc74a9eb818f_mafia.exe	93
PID 4172 wrote to memory of 2212	4172	2025-01-11_cf1854207054c0fc2d20cc74a9eb818f_mafia.exe	93
PID 4172 wrote to memory of 2212	4172	2025-01-11_cf1854207054c0fc2d20cc74a9eb818f_mafia.exe	93
PID 4172 wrote to memory of 2768	4172	2025-01-11_cf1854207054c0fc2d20cc74a9eb818f_mafia.exe	96
PID 4172 wrote to memory of 2768	4172	2025-01-11_cf1854207054c0fc2d20cc74a9eb818f_mafia.exe	96
PID 4172 wrote to memory of 2768	4172	2025-01-11_cf1854207054c0fc2d20cc74a9eb818f_mafia.exe	96
PID 2400 wrote to memory of 3828	2400	rtounak.exe	108
PID 2400 wrote to memory of 3828	2400	rtounak.exe	108
PID 2400 wrote to memory of 3828	2400	rtounak.exe	108
PID 2400 wrote to memory of 3828	2400	rtounak.exe	108
PID 2400 wrote to memory of 3828	2400	rtounak.exe	108

C:\Users\Admin\AppData\Local\Temp\2025-01-11_cf1854207054c0fc2d20cc74a9eb818f_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-11_cf1854207054c0fc2d20cc74a9eb818f_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4172
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kxggyhea\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:228
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rtounak.exe" C:\Windows\SysWOW64\kxggyhea\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3312
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create kxggyhea binPath= "C:\Windows\SysWOW64\kxggyhea\rtounak.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-11_cf1854207054c0fc2d20cc74a9eb818f_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4920
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description kxggyhea "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4444
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start kxggyhea
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2212
- 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:2768
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4172 -s 1036
  2⤵
  - Program crash
  PID:5076

C:\Windows\SysWOW64\kxggyhea\rtounak.exe
C:\Windows\SysWOW64\kxggyhea\rtounak.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-11_cf1854207054c0fc2d20cc74a9eb818f_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2400
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3828
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2400 -s 528
  2⤵
  - Program crash
  PID:1996

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 4172 -ip 4172
1⤵
PID:2808

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 2400 -ip 2400
1⤵
PID:1004

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\rtounak.exe

Filesize
10.1MB

MD5
2bb347d87b00665a23dc9bdcbd27658e

SHA1
d8f7e10710b37f27f4d9af9bb0d68cc180466094

SHA256
a4574074382a6fe79191c5eeca0f7cc650f5b763d3f558f550f93b3e47a4b217

SHA512
b65ec93a6ac50973b168b2109604766371ea8a53ce8d08dffd44b055fb99f72d4deb6436db2ab947a325cbb7f7df10f83540fa4c273906fafc3e15ad35f7d7d9

Download Submit
memory/2400-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2400-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2400-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2400-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3828-14-0x0000000000A50000-0x0000000000A65000-memory.dmp

Filesize
84KB

Download
memory/3828-16-0x0000000000A50000-0x0000000000A65000-memory.dmp

Filesize
84KB

Download
memory/3828-17-0x0000000000A50000-0x0000000000A65000-memory.dmp

Filesize
84KB

Download
memory/4172-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4172-2-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/4172-8-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/4172-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4172-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4172-1-0x0000000000640000-0x0000000000740000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads