tofsee | 2ef3e86105cc9c17ece79fbff2004aae3a4a30d41251ee64e6b04a3e24d0416d

General

Target

2025-02-03_48622f456515205c9f9fa3274ad5e438_mafia.exe
Size

13.8MB
MD5

48622f456515205c9f9fa3274ad5e438
SHA1

afae1beebe35152a6cf98a5d8c2e7bdd4c65de04
SHA256

2ef3e86105cc9c17ece79fbff2004aae3a4a30d41251ee64e6b04a3e24d0416d
SHA512

af517befa079673b5c1ae764b2a88b6df3c8457d676f0408a20011a8d64ca1e157b759e9091496ca55bafc29f41f7b152cf739231a10de9f79de9983b1caa0ef
SSDEEP

393216:2XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXG:H

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
1096	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\acfcbqct\ImagePath = "C:\\Windows\\SysWOW64\\acfcbqct\\ykjxisau.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-1-5-21-2436272344-4274332273-444425594-1000\Control Panel\International\Geo\Nation	2025-02-03_48622f456515205c9f9fa3274ad5e438_mafia.exe

Deletes itself 1 IoCs

pid	Process
4164	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4188	ykjxisau.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4188 set thread context of 4164	4188	ykjxisau.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
3900	sc.exe
2308	sc.exe
4896	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	2025-02-03_48622f456515205c9f9fa3274ad5e438_mafia.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	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	ykjxisau.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4360 wrote to memory of 1832	4360	2025-02-03_48622f456515205c9f9fa3274ad5e438_mafia.exe	86
PID 4360 wrote to memory of 1832	4360	2025-02-03_48622f456515205c9f9fa3274ad5e438_mafia.exe	86
PID 4360 wrote to memory of 1832	4360	2025-02-03_48622f456515205c9f9fa3274ad5e438_mafia.exe	86
PID 4360 wrote to memory of 1436	4360	2025-02-03_48622f456515205c9f9fa3274ad5e438_mafia.exe	90
PID 4360 wrote to memory of 1436	4360	2025-02-03_48622f456515205c9f9fa3274ad5e438_mafia.exe	90
PID 4360 wrote to memory of 1436	4360	2025-02-03_48622f456515205c9f9fa3274ad5e438_mafia.exe	90
PID 4360 wrote to memory of 3900	4360	2025-02-03_48622f456515205c9f9fa3274ad5e438_mafia.exe	92
PID 4360 wrote to memory of 3900	4360	2025-02-03_48622f456515205c9f9fa3274ad5e438_mafia.exe	92
PID 4360 wrote to memory of 3900	4360	2025-02-03_48622f456515205c9f9fa3274ad5e438_mafia.exe	92
PID 4360 wrote to memory of 2308	4360	2025-02-03_48622f456515205c9f9fa3274ad5e438_mafia.exe	95
PID 4360 wrote to memory of 2308	4360	2025-02-03_48622f456515205c9f9fa3274ad5e438_mafia.exe	95
PID 4360 wrote to memory of 2308	4360	2025-02-03_48622f456515205c9f9fa3274ad5e438_mafia.exe	95
PID 4360 wrote to memory of 4896	4360	2025-02-03_48622f456515205c9f9fa3274ad5e438_mafia.exe	97
PID 4360 wrote to memory of 4896	4360	2025-02-03_48622f456515205c9f9fa3274ad5e438_mafia.exe	97
PID 4360 wrote to memory of 4896	4360	2025-02-03_48622f456515205c9f9fa3274ad5e438_mafia.exe	97
PID 4360 wrote to memory of 1096	4360	2025-02-03_48622f456515205c9f9fa3274ad5e438_mafia.exe	100
PID 4360 wrote to memory of 1096	4360	2025-02-03_48622f456515205c9f9fa3274ad5e438_mafia.exe	100
PID 4360 wrote to memory of 1096	4360	2025-02-03_48622f456515205c9f9fa3274ad5e438_mafia.exe	100
PID 4188 wrote to memory of 4164	4188	ykjxisau.exe	102
PID 4188 wrote to memory of 4164	4188	ykjxisau.exe	102
PID 4188 wrote to memory of 4164	4188	ykjxisau.exe	102
PID 4188 wrote to memory of 4164	4188	ykjxisau.exe	102
PID 4188 wrote to memory of 4164	4188	ykjxisau.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-02-03_48622f456515205c9f9fa3274ad5e438_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-03_48622f456515205c9f9fa3274ad5e438_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4360
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\acfcbqct\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1832
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ykjxisau.exe" C:\Windows\SysWOW64\acfcbqct\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1436
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create acfcbqct binPath= "C:\Windows\SysWOW64\acfcbqct\ykjxisau.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-03_48622f456515205c9f9fa3274ad5e438_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3900
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description acfcbqct "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2308
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start acfcbqct
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4896
- 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:1096

C:\Windows\SysWOW64\acfcbqct\ykjxisau.exe
C:\Windows\SysWOW64\acfcbqct\ykjxisau.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-03_48622f456515205c9f9fa3274ad5e438_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4188
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4164

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\ykjxisau.exe

Filesize
14.8MB

MD5
5776fd655902ead01ef1f43f1b1ee3d6

SHA1
4d285c195e68e17322dd2360d286f4a033fcc679

SHA256
54af3913723a7a0f8f0c5bf05c1152789e261c584282dfe25096cb3a0057b59d

SHA512
3e662bad89e260fcdf9a3e87285b4b415f1445eb8c3ce82e07d870a2c7c3724bb0caa58a3df582e07914a69e0b28813e7585f6996d141f9d4f7828810de5e6aa

Download Submit
memory/4164-14-0x0000000000C50000-0x0000000000C65000-memory.dmp

Filesize
84KB

Download
memory/4164-21-0x0000000000C50000-0x0000000000C65000-memory.dmp

Filesize
84KB

Download
memory/4164-20-0x0000000000C50000-0x0000000000C65000-memory.dmp

Filesize
84KB

Download
memory/4164-18-0x0000000000C50000-0x0000000000C65000-memory.dmp

Filesize
84KB

Download
memory/4164-17-0x0000000000C50000-0x0000000000C65000-memory.dmp

Filesize
84KB

Download
memory/4188-19-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4188-13-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4188-9-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4188-8-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4360-10-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4360-12-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4360-1-0x0000000000630000-0x0000000000730000-memory.dmp

Filesize
1024KB

Download
memory/4360-11-0x00000000005A0000-0x00000000005B3000-memory.dmp

Filesize
76KB

Download
memory/4360-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4360-2-0x00000000005A0000-0x00000000005B3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads