tofsee | ce3075a1f82aa948518f19102b1bac1b980e9f6a053b878702ccd123681fb046

General

Target

2025-02-07_c2f6f00745bf29b245f3c1a7434b3aba_mafia.exe
Size

10.8MB
MD5

c2f6f00745bf29b245f3c1a7434b3aba
SHA1

ed9c25ad7141939c366fe291b3cc37d1a66d78dd
SHA256

ce3075a1f82aa948518f19102b1bac1b980e9f6a053b878702ccd123681fb046
SHA512

8dbc22df444f75d5cd69471e48ebf643844bc76cd37ba4f14b990b0d7bf5d92075b249fde8389854cea97b575acdd8f58c2bff91ab716c0b266926f3dd6dd5c9
SSDEEP

196608:5yXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX3:0XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXH

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

Downloads MZ/PE file 1 IoCs

flow	pid	Process
26	1836	Process not Found

Modifies Windows Firewall 2 TTPs 1 IoCs

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2160	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\fsjqkmew\ImagePath = "C:\\Windows\\SysWOW64\\fsjqkmew\\arzxhcjx.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-1-5-21-1639772215-809007892-4072230623-1000\Control Panel\International\Geo\Nation	2025-02-07_c2f6f00745bf29b245f3c1a7434b3aba_mafia.exe

Deletes itself 1 IoCs

pid	Process
1124	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3796	arzxhcjx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3796 set thread context of 1124	3796	arzxhcjx.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
2136	sc.exe
2272	sc.exe
2320	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 10 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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MicrosoftEdgeUpdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-07_c2f6f00745bf29b245f3c1a7434b3aba_mafia.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	sc.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	arzxhcjx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
948	MicrosoftEdgeUpdate.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4084 wrote to memory of 3864	4084	2025-02-07_c2f6f00745bf29b245f3c1a7434b3aba_mafia.exe	89
PID 4084 wrote to memory of 3864	4084	2025-02-07_c2f6f00745bf29b245f3c1a7434b3aba_mafia.exe	89
PID 4084 wrote to memory of 3864	4084	2025-02-07_c2f6f00745bf29b245f3c1a7434b3aba_mafia.exe	89
PID 4084 wrote to memory of 2652	4084	2025-02-07_c2f6f00745bf29b245f3c1a7434b3aba_mafia.exe	91
PID 4084 wrote to memory of 2652	4084	2025-02-07_c2f6f00745bf29b245f3c1a7434b3aba_mafia.exe	91
PID 4084 wrote to memory of 2652	4084	2025-02-07_c2f6f00745bf29b245f3c1a7434b3aba_mafia.exe	91
PID 4084 wrote to memory of 2136	4084	2025-02-07_c2f6f00745bf29b245f3c1a7434b3aba_mafia.exe	93
PID 4084 wrote to memory of 2136	4084	2025-02-07_c2f6f00745bf29b245f3c1a7434b3aba_mafia.exe	93
PID 4084 wrote to memory of 2136	4084	2025-02-07_c2f6f00745bf29b245f3c1a7434b3aba_mafia.exe	93
PID 4084 wrote to memory of 2272	4084	2025-02-07_c2f6f00745bf29b245f3c1a7434b3aba_mafia.exe	95
PID 4084 wrote to memory of 2272	4084	2025-02-07_c2f6f00745bf29b245f3c1a7434b3aba_mafia.exe	95
PID 4084 wrote to memory of 2272	4084	2025-02-07_c2f6f00745bf29b245f3c1a7434b3aba_mafia.exe	95
PID 4084 wrote to memory of 2320	4084	2025-02-07_c2f6f00745bf29b245f3c1a7434b3aba_mafia.exe	97
PID 4084 wrote to memory of 2320	4084	2025-02-07_c2f6f00745bf29b245f3c1a7434b3aba_mafia.exe	97
PID 4084 wrote to memory of 2320	4084	2025-02-07_c2f6f00745bf29b245f3c1a7434b3aba_mafia.exe	97
PID 4084 wrote to memory of 2160	4084	2025-02-07_c2f6f00745bf29b245f3c1a7434b3aba_mafia.exe	100
PID 4084 wrote to memory of 2160	4084	2025-02-07_c2f6f00745bf29b245f3c1a7434b3aba_mafia.exe	100
PID 4084 wrote to memory of 2160	4084	2025-02-07_c2f6f00745bf29b245f3c1a7434b3aba_mafia.exe	100
PID 3796 wrote to memory of 1124	3796	arzxhcjx.exe	102
PID 3796 wrote to memory of 1124	3796	arzxhcjx.exe	102
PID 3796 wrote to memory of 1124	3796	arzxhcjx.exe	102
PID 3796 wrote to memory of 1124	3796	arzxhcjx.exe	102
PID 3796 wrote to memory of 1124	3796	arzxhcjx.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-02-07_c2f6f00745bf29b245f3c1a7434b3aba_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-07_c2f6f00745bf29b245f3c1a7434b3aba_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4084
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fsjqkmew\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3864
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\arzxhcjx.exe" C:\Windows\SysWOW64\fsjqkmew\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2652
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fsjqkmew binPath= "C:\Windows\SysWOW64\fsjqkmew\arzxhcjx.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-07_c2f6f00745bf29b245f3c1a7434b3aba_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2136
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fsjqkmew "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2272
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fsjqkmew
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2320
- 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:2160

C:\Windows\SysWOW64\fsjqkmew\arzxhcjx.exe
C:\Windows\SysWOW64\fsjqkmew\arzxhcjx.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-07_c2f6f00745bf29b245f3c1a7434b3aba_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3796
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1124

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIxIiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDY4ODkiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxOTM2NTgwOTAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1MDE2NDY0NTIzIi8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:948

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

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\arzxhcjx.exe

Filesize
10.0MB

MD5
3f187a59c8e9f9fb374d404a7f3faa97

SHA1
daa28c7489f38d49bb9c218e10852505233c7580

SHA256
0a7bd6993f5130cd60988b880d599cc13afa64401fbef811f83597f406fac99b

SHA512
26b02ded59e76b99bfd26ac81e696a9f511b63848a4b1df6d6498ef279d9eb70c07e835a05b242baa1f4ab1383367d0236ea26191d8da3a93b79c9dd35ac3bd0

Download Submit
memory/1124-13-0x0000000000360000-0x0000000000375000-memory.dmp

Filesize
84KB

Download
memory/1124-22-0x0000000000360000-0x0000000000375000-memory.dmp

Filesize
84KB

Download
memory/1124-20-0x0000000000360000-0x0000000000375000-memory.dmp

Filesize
84KB

Download
memory/1124-18-0x0000000000360000-0x0000000000375000-memory.dmp

Filesize
84KB

Download
memory/1124-19-0x0000000000360000-0x0000000000375000-memory.dmp

Filesize
84KB

Download
memory/3796-16-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3796-12-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3796-11-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4084-7-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4084-2-0x0000000000570000-0x0000000000583000-memory.dmp

Filesize
76KB

Download
memory/4084-8-0x0000000000570000-0x0000000000583000-memory.dmp

Filesize
76KB

Download
memory/4084-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4084-1-0x0000000000700000-0x0000000000800000-memory.dmp

Filesize
1024KB

Download
memory/4084-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads