tofsee | 0f17baf51ebbbf3f788e8c409a8f02c0cafe0284228452465aa2b0ba8667e617

General

Target

2025-02-03_28cae9a9cb20f84f30a95ad6bfdf9dab_mafia.exe
Size

14.9MB
MD5

28cae9a9cb20f84f30a95ad6bfdf9dab
SHA1

9e76569721170f7351f13c1e3e5207d18e858f30
SHA256

0f17baf51ebbbf3f788e8c409a8f02c0cafe0284228452465aa2b0ba8667e617
SHA512

7ec421f95b2e962c852086573f60d2beac6cbcbbdad5dc4d7237c0414cbd21ec25bee1dcdc6f9171fceb0180068857b6d079f26f659994ca6f3ddef8a88b52b3
SSDEEP

393216:cXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXH:

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
3976	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\fknardju\ImagePath = "C:\\Windows\\SysWOW64\\fknardju\\eclmvrgc.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-1-5-21-3625106387-4207083342-115176794-1000\Control Panel\International\Geo\Nation	2025-02-03_28cae9a9cb20f84f30a95ad6bfdf9dab_mafia.exe

Deletes itself 1 IoCs

pid	Process
3720	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3400	eclmvrgc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3400 set thread context of 3720	3400	eclmvrgc.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
4188	sc.exe
3208	sc.exe
2380	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_28cae9a9cb20f84f30a95ad6bfdf9dab_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	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	eclmvrgc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1252 wrote to memory of 2148	1252	2025-02-03_28cae9a9cb20f84f30a95ad6bfdf9dab_mafia.exe	86
PID 1252 wrote to memory of 2148	1252	2025-02-03_28cae9a9cb20f84f30a95ad6bfdf9dab_mafia.exe	86
PID 1252 wrote to memory of 2148	1252	2025-02-03_28cae9a9cb20f84f30a95ad6bfdf9dab_mafia.exe	86
PID 1252 wrote to memory of 1620	1252	2025-02-03_28cae9a9cb20f84f30a95ad6bfdf9dab_mafia.exe	89
PID 1252 wrote to memory of 1620	1252	2025-02-03_28cae9a9cb20f84f30a95ad6bfdf9dab_mafia.exe	89
PID 1252 wrote to memory of 1620	1252	2025-02-03_28cae9a9cb20f84f30a95ad6bfdf9dab_mafia.exe	89
PID 1252 wrote to memory of 4188	1252	2025-02-03_28cae9a9cb20f84f30a95ad6bfdf9dab_mafia.exe	91
PID 1252 wrote to memory of 4188	1252	2025-02-03_28cae9a9cb20f84f30a95ad6bfdf9dab_mafia.exe	91
PID 1252 wrote to memory of 4188	1252	2025-02-03_28cae9a9cb20f84f30a95ad6bfdf9dab_mafia.exe	91
PID 1252 wrote to memory of 3208	1252	2025-02-03_28cae9a9cb20f84f30a95ad6bfdf9dab_mafia.exe	93
PID 1252 wrote to memory of 3208	1252	2025-02-03_28cae9a9cb20f84f30a95ad6bfdf9dab_mafia.exe	93
PID 1252 wrote to memory of 3208	1252	2025-02-03_28cae9a9cb20f84f30a95ad6bfdf9dab_mafia.exe	93
PID 1252 wrote to memory of 2380	1252	2025-02-03_28cae9a9cb20f84f30a95ad6bfdf9dab_mafia.exe	96
PID 1252 wrote to memory of 2380	1252	2025-02-03_28cae9a9cb20f84f30a95ad6bfdf9dab_mafia.exe	96
PID 1252 wrote to memory of 2380	1252	2025-02-03_28cae9a9cb20f84f30a95ad6bfdf9dab_mafia.exe	96
PID 1252 wrote to memory of 3976	1252	2025-02-03_28cae9a9cb20f84f30a95ad6bfdf9dab_mafia.exe	99
PID 1252 wrote to memory of 3976	1252	2025-02-03_28cae9a9cb20f84f30a95ad6bfdf9dab_mafia.exe	99
PID 1252 wrote to memory of 3976	1252	2025-02-03_28cae9a9cb20f84f30a95ad6bfdf9dab_mafia.exe	99
PID 3400 wrote to memory of 3720	3400	eclmvrgc.exe	101
PID 3400 wrote to memory of 3720	3400	eclmvrgc.exe	101
PID 3400 wrote to memory of 3720	3400	eclmvrgc.exe	101
PID 3400 wrote to memory of 3720	3400	eclmvrgc.exe	101
PID 3400 wrote to memory of 3720	3400	eclmvrgc.exe	101

C:\Users\Admin\AppData\Local\Temp\2025-02-03_28cae9a9cb20f84f30a95ad6bfdf9dab_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-03_28cae9a9cb20f84f30a95ad6bfdf9dab_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1252
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fknardju\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2148
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\eclmvrgc.exe" C:\Windows\SysWOW64\fknardju\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1620
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fknardju binPath= "C:\Windows\SysWOW64\fknardju\eclmvrgc.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-03_28cae9a9cb20f84f30a95ad6bfdf9dab_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4188
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fknardju "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3208
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fknardju
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2380
- 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:3976

C:\Windows\SysWOW64\fknardju\eclmvrgc.exe
C:\Windows\SysWOW64\fknardju\eclmvrgc.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-03_28cae9a9cb20f84f30a95ad6bfdf9dab_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3400
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3720

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\eclmvrgc.exe

Filesize
14.5MB

MD5
2cb45e2f4d272bb0b42b265f2e45778c

SHA1
21378a33f34078d59e86eaebab95b0696ce750c8

SHA256
211ea3d06d2f092ede4d3711d60cb470b6aff0b4db09e91cdc5e0ea23985e696

SHA512
53877e0523af91a6e696f694fcc0a51feebf3bc03f4ac94dee4511fd767154fcc11ebaf1424a6f5fbbe837349bad1ccfb3824553700440736c97b1d1f2324b3a

Download Submit
memory/1252-1-0x0000000000540000-0x0000000000640000-memory.dmp

Filesize
1024KB

Download
memory/1252-2-0x00000000004A0000-0x00000000004B3000-memory.dmp

Filesize
76KB

Download
memory/1252-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1252-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1252-8-0x00000000004A0000-0x00000000004B3000-memory.dmp

Filesize
76KB

Download
memory/1252-7-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3400-13-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3400-12-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3400-11-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3400-20-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3720-18-0x0000000000740000-0x0000000000755000-memory.dmp

Filesize
84KB

Download
memory/3720-21-0x0000000000740000-0x0000000000755000-memory.dmp

Filesize
84KB

Download
memory/3720-17-0x0000000000740000-0x0000000000755000-memory.dmp

Filesize
84KB

Download
memory/3720-14-0x0000000000740000-0x0000000000755000-memory.dmp

Filesize
84KB

Download
memory/3720-22-0x0000000000740000-0x0000000000755000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads