tofsee | 6584d25c12fbfdb27603921deff8b5ffefed2eb8c7da4ab280cf586836d9f662

General

Target

2025-02-09_31531b52e82f02e9d65d297498293905_mafia.exe
Size

10.5MB
MD5

31531b52e82f02e9d65d297498293905
SHA1

4f7b3afe5121ac0f134cb276027cdc3b211cbd09
SHA256

6584d25c12fbfdb27603921deff8b5ffefed2eb8c7da4ab280cf586836d9f662
SHA512

d7333219abdf68326c3445240ac6a45a6c45807d35c5defbecd2253401245d7c6624c04eb88b1a5777a556c2c410a345e6581295677f3bb83d1a8b28edffbf85
SSDEEP

6144:GLQ1p/2p5e+D2jFHO+iZoy6u9FlfrXEz9NQNQNQNQNQNQNQNQNQNQNQNQNQNQNQ/:XTYe+D2jFu+iZoUFhAzw

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
30	1456	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
4884	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\gxjkzkxa\ImagePath = "C:\\Windows\\SysWOW64\\gxjkzkxa\\kshlywff.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-1-5-21-2499155680-3253481302-763015360-1000\Control Panel\International\Geo\Nation	2025-02-09_31531b52e82f02e9d65d297498293905_mafia.exe

Deletes itself 1 IoCs

pid	Process
1684	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4636	kshlywff.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4636 set thread context of 1684	4636	kshlywff.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
4376	sc.exe
1176	sc.exe
3224	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4140	4636	WerFault.exe	99
4604	1480	WerFault.exe	85

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	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	2025-02-09_31531b52e82f02e9d65d297498293905_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	kshlywff.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	MicrosoftEdgeUpdate.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
2084	MicrosoftEdgeUpdate.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1480 wrote to memory of 1088	1480	2025-02-09_31531b52e82f02e9d65d297498293905_mafia.exe	89
PID 1480 wrote to memory of 1088	1480	2025-02-09_31531b52e82f02e9d65d297498293905_mafia.exe	89
PID 1480 wrote to memory of 1088	1480	2025-02-09_31531b52e82f02e9d65d297498293905_mafia.exe	89
PID 1480 wrote to memory of 5036	1480	2025-02-09_31531b52e82f02e9d65d297498293905_mafia.exe	91
PID 1480 wrote to memory of 5036	1480	2025-02-09_31531b52e82f02e9d65d297498293905_mafia.exe	91
PID 1480 wrote to memory of 5036	1480	2025-02-09_31531b52e82f02e9d65d297498293905_mafia.exe	91
PID 1480 wrote to memory of 3224	1480	2025-02-09_31531b52e82f02e9d65d297498293905_mafia.exe	93
PID 1480 wrote to memory of 3224	1480	2025-02-09_31531b52e82f02e9d65d297498293905_mafia.exe	93
PID 1480 wrote to memory of 3224	1480	2025-02-09_31531b52e82f02e9d65d297498293905_mafia.exe	93
PID 1480 wrote to memory of 4376	1480	2025-02-09_31531b52e82f02e9d65d297498293905_mafia.exe	95
PID 1480 wrote to memory of 4376	1480	2025-02-09_31531b52e82f02e9d65d297498293905_mafia.exe	95
PID 1480 wrote to memory of 4376	1480	2025-02-09_31531b52e82f02e9d65d297498293905_mafia.exe	95
PID 1480 wrote to memory of 1176	1480	2025-02-09_31531b52e82f02e9d65d297498293905_mafia.exe	97
PID 1480 wrote to memory of 1176	1480	2025-02-09_31531b52e82f02e9d65d297498293905_mafia.exe	97
PID 1480 wrote to memory of 1176	1480	2025-02-09_31531b52e82f02e9d65d297498293905_mafia.exe	97
PID 1480 wrote to memory of 4884	1480	2025-02-09_31531b52e82f02e9d65d297498293905_mafia.exe	100
PID 1480 wrote to memory of 4884	1480	2025-02-09_31531b52e82f02e9d65d297498293905_mafia.exe	100
PID 1480 wrote to memory of 4884	1480	2025-02-09_31531b52e82f02e9d65d297498293905_mafia.exe	100
PID 4636 wrote to memory of 1684	4636	kshlywff.exe	103
PID 4636 wrote to memory of 1684	4636	kshlywff.exe	103
PID 4636 wrote to memory of 1684	4636	kshlywff.exe	103
PID 4636 wrote to memory of 1684	4636	kshlywff.exe	103
PID 4636 wrote to memory of 1684	4636	kshlywff.exe	103

C:\Users\Admin\AppData\Local\Temp\2025-02-09_31531b52e82f02e9d65d297498293905_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-09_31531b52e82f02e9d65d297498293905_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1480
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gxjkzkxa\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1088
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kshlywff.exe" C:\Windows\SysWOW64\gxjkzkxa\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5036
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create gxjkzkxa binPath= "C:\Windows\SysWOW64\gxjkzkxa\kshlywff.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-09_31531b52e82f02e9d65d297498293905_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3224
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description gxjkzkxa "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4376
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start gxjkzkxa
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1176
- 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:4884
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1480 -s 1036
  2⤵
  - Program crash
  PID:4604

C:\Windows\SysWOW64\gxjkzkxa\kshlywff.exe
C:\Windows\SysWOW64\gxjkzkxa\kshlywff.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-09_31531b52e82f02e9d65d297498293905_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4636
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1684
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4636 -s 560
  2⤵
  - Program crash
  PID:4140

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1480 -ip 1480
1⤵
PID:1632

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4636 -ip 4636
1⤵
PID:804

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIxIiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDQ0OTciIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxNjkzODEzMjAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI0OTA5NzY4OTI2Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:2084

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\kshlywff.exe

Filesize
13.1MB

MD5
65c56bece39702f014e60ebf56482249

SHA1
9c6f1fb2fca71dda4c5098938f6b3ffd8f45043b

SHA256
88be634eddd475cf7babc400629f1121806f35bb868bc57f847e981fe200eb2e

SHA512
87416cd19dbff197d10aee82f8d35b64366ddd8512248f05500a834604d64c39537a311291a561c9ffeaf77e365f21f34e88bd65bffa7a6d8604742c62da0533

Download Submit
memory/1480-16-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/1480-2-0x0000000000510000-0x0000000000523000-memory.dmp

Filesize
76KB

Download
memory/1480-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1480-1-0x0000000000620000-0x0000000000720000-memory.dmp

Filesize
1024KB

Download
memory/1480-17-0x0000000000510000-0x0000000000523000-memory.dmp

Filesize
76KB

Download
memory/1480-18-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1684-19-0x0000000000990000-0x00000000009A5000-memory.dmp

Filesize
84KB

Download
memory/1684-10-0x0000000000990000-0x00000000009A5000-memory.dmp

Filesize
84KB

Download
memory/1684-13-0x0000000000990000-0x00000000009A5000-memory.dmp

Filesize
84KB

Download
memory/1684-22-0x0000000000990000-0x00000000009A5000-memory.dmp

Filesize
84KB

Download
memory/1684-20-0x0000000000990000-0x00000000009A5000-memory.dmp

Filesize
84KB

Download
memory/4636-9-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/4636-15-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/4636-8-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads