tofsee | 559392ab0d8b5822bfb22af22fa624a4d13ed5dbe2dfb41479b88175c36e115b

General

Target

2025-01-30_173d0dae116ce3af630bb816a5016ce6_mafia.exe
Size

12.6MB
MD5

173d0dae116ce3af630bb816a5016ce6
SHA1

e922787a276ddb7dcd6a9920f37c69e62c326d69
SHA256

559392ab0d8b5822bfb22af22fa624a4d13ed5dbe2dfb41479b88175c36e115b
SHA512

3c7ac21a257f8b44582b5bf8c337a20cd7053331679ccab22fa1182a516213825ef6bdf182e5253f67c8f61b783aa614045109f5eaff4ace42a16a1149a2c67f
SSDEEP

24576:eEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ5:3fotz

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
5004	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\fzgeiynv\ImagePath = "C:\\Windows\\SysWOW64\\fzgeiynv\\bdyexku.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-1-5-21-4003209913-3868522715-854928974-1000\Control Panel\International\Geo\Nation	2025-01-30_173d0dae116ce3af630bb816a5016ce6_mafia.exe

Deletes itself 1 IoCs

pid	Process
836	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1564	bdyexku.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1564 set thread context of 836	1564	bdyexku.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
3500	sc.exe
4084	sc.exe
4308	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
4560	2620	WerFault.exe	83
2988	1564	WerFault.exe	96

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bdyexku.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-30_173d0dae116ce3af630bb816a5016ce6_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2620 wrote to memory of 5056	2620	2025-01-30_173d0dae116ce3af630bb816a5016ce6_mafia.exe	86
PID 2620 wrote to memory of 5056	2620	2025-01-30_173d0dae116ce3af630bb816a5016ce6_mafia.exe	86
PID 2620 wrote to memory of 5056	2620	2025-01-30_173d0dae116ce3af630bb816a5016ce6_mafia.exe	86
PID 2620 wrote to memory of 4768	2620	2025-01-30_173d0dae116ce3af630bb816a5016ce6_mafia.exe	88
PID 2620 wrote to memory of 4768	2620	2025-01-30_173d0dae116ce3af630bb816a5016ce6_mafia.exe	88
PID 2620 wrote to memory of 4768	2620	2025-01-30_173d0dae116ce3af630bb816a5016ce6_mafia.exe	88
PID 2620 wrote to memory of 4308	2620	2025-01-30_173d0dae116ce3af630bb816a5016ce6_mafia.exe	90
PID 2620 wrote to memory of 4308	2620	2025-01-30_173d0dae116ce3af630bb816a5016ce6_mafia.exe	90
PID 2620 wrote to memory of 4308	2620	2025-01-30_173d0dae116ce3af630bb816a5016ce6_mafia.exe	90
PID 2620 wrote to memory of 3500	2620	2025-01-30_173d0dae116ce3af630bb816a5016ce6_mafia.exe	92
PID 2620 wrote to memory of 3500	2620	2025-01-30_173d0dae116ce3af630bb816a5016ce6_mafia.exe	92
PID 2620 wrote to memory of 3500	2620	2025-01-30_173d0dae116ce3af630bb816a5016ce6_mafia.exe	92
PID 2620 wrote to memory of 4084	2620	2025-01-30_173d0dae116ce3af630bb816a5016ce6_mafia.exe	94
PID 2620 wrote to memory of 4084	2620	2025-01-30_173d0dae116ce3af630bb816a5016ce6_mafia.exe	94
PID 2620 wrote to memory of 4084	2620	2025-01-30_173d0dae116ce3af630bb816a5016ce6_mafia.exe	94
PID 2620 wrote to memory of 5004	2620	2025-01-30_173d0dae116ce3af630bb816a5016ce6_mafia.exe	97
PID 2620 wrote to memory of 5004	2620	2025-01-30_173d0dae116ce3af630bb816a5016ce6_mafia.exe	97
PID 2620 wrote to memory of 5004	2620	2025-01-30_173d0dae116ce3af630bb816a5016ce6_mafia.exe	97
PID 1564 wrote to memory of 836	1564	bdyexku.exe	102
PID 1564 wrote to memory of 836	1564	bdyexku.exe	102
PID 1564 wrote to memory of 836	1564	bdyexku.exe	102
PID 1564 wrote to memory of 836	1564	bdyexku.exe	102
PID 1564 wrote to memory of 836	1564	bdyexku.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-01-30_173d0dae116ce3af630bb816a5016ce6_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-30_173d0dae116ce3af630bb816a5016ce6_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2620
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fzgeiynv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5056
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bdyexku.exe" C:\Windows\SysWOW64\fzgeiynv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4768
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fzgeiynv binPath= "C:\Windows\SysWOW64\fzgeiynv\bdyexku.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-30_173d0dae116ce3af630bb816a5016ce6_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4308
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fzgeiynv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3500
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fzgeiynv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4084
- 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:5004
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2620 -s 1044
  2⤵
  - Program crash
  PID:4560

C:\Windows\SysWOW64\fzgeiynv\bdyexku.exe
C:\Windows\SysWOW64\fzgeiynv\bdyexku.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-30_173d0dae116ce3af630bb816a5016ce6_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1564
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:836
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1564 -s 528
  2⤵
  - Program crash
  PID:2988

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 2620 -ip 2620
1⤵
PID:4268

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 1564 -ip 1564
1⤵
PID:4016

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\bdyexku.exe

Filesize
14.7MB

MD5
a893f357d9ba58bf76dd55e518c5c9f3

SHA1
5ad2655a387a3f9debe0c81e814635eea439c62c

SHA256
e534f0020be6cd03487fc4d4deb7c893985799534839009c6139c2e6c3f692e3

SHA512
34dde7a005c8203ecec5f3ce914838fedfb43a3e6c6ae7152f7dedb4e66469ebd1e82192a32b11fd71aac452654afd2255dbf0f2a6ab72fd5bee63cabe3ffd80

Download Submit
memory/836-14-0x0000000000E40000-0x0000000000E55000-memory.dmp

Filesize
84KB

Download
memory/836-16-0x0000000000E40000-0x0000000000E55000-memory.dmp

Filesize
84KB

Download
memory/836-17-0x0000000000E40000-0x0000000000E55000-memory.dmp

Filesize
84KB

Download
memory/1564-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1564-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1564-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1564-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2620-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2620-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2620-8-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2620-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2620-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2620-1-0x00000000004E0000-0x00000000005E0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads