tofsee | cdf0147acfb77b62a6fbe3da5fce96a3a9f5e8a93a2598dc2ba7b8225af61517

General

Target

2025-02-07_6d71fd428ebc45bce57bfd19b39008ae_mafia.exe
Size

11.2MB
MD5

6d71fd428ebc45bce57bfd19b39008ae
SHA1

f0326e8117dea4372f8aebea77291bad011fee10
SHA256

cdf0147acfb77b62a6fbe3da5fce96a3a9f5e8a93a2598dc2ba7b8225af61517
SHA512

3875ea820817f6bc0dcc4d41b7d3df8aa592a18be76e26e7c3d673e4cfbe9ab66a218b6ec1edb2517cf833a8a2c296665a18292847bf2eb96f811a2f8064dfcd
SSDEEP

49152:kqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP:kqtYc3

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
45	1900	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
3592	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\mmhzjhxk\ImagePath = "C:\\Windows\\SysWOW64\\mmhzjhxk\\sstezayg.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-1-5-21-189444705-1272902858-1305688695-1000\Control Panel\International\Geo\Nation	2025-02-07_6d71fd428ebc45bce57bfd19b39008ae_mafia.exe

Deletes itself 1 IoCs

pid	Process
3788	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4820	sstezayg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4820 set thread context of 3788	4820	sstezayg.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
3256	sc.exe
4992	sc.exe
2044	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
2888	4820	WerFault.exe	99
3160	3288	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-07_6d71fd428ebc45bce57bfd19b39008ae_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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sstezayg.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	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
4512	MicrosoftEdgeUpdate.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3288 wrote to memory of 2600	3288	2025-02-07_6d71fd428ebc45bce57bfd19b39008ae_mafia.exe	89
PID 3288 wrote to memory of 2600	3288	2025-02-07_6d71fd428ebc45bce57bfd19b39008ae_mafia.exe	89
PID 3288 wrote to memory of 2600	3288	2025-02-07_6d71fd428ebc45bce57bfd19b39008ae_mafia.exe	89
PID 3288 wrote to memory of 5052	3288	2025-02-07_6d71fd428ebc45bce57bfd19b39008ae_mafia.exe	91
PID 3288 wrote to memory of 5052	3288	2025-02-07_6d71fd428ebc45bce57bfd19b39008ae_mafia.exe	91
PID 3288 wrote to memory of 5052	3288	2025-02-07_6d71fd428ebc45bce57bfd19b39008ae_mafia.exe	91
PID 3288 wrote to memory of 3256	3288	2025-02-07_6d71fd428ebc45bce57bfd19b39008ae_mafia.exe	93
PID 3288 wrote to memory of 3256	3288	2025-02-07_6d71fd428ebc45bce57bfd19b39008ae_mafia.exe	93
PID 3288 wrote to memory of 3256	3288	2025-02-07_6d71fd428ebc45bce57bfd19b39008ae_mafia.exe	93
PID 3288 wrote to memory of 4992	3288	2025-02-07_6d71fd428ebc45bce57bfd19b39008ae_mafia.exe	95
PID 3288 wrote to memory of 4992	3288	2025-02-07_6d71fd428ebc45bce57bfd19b39008ae_mafia.exe	95
PID 3288 wrote to memory of 4992	3288	2025-02-07_6d71fd428ebc45bce57bfd19b39008ae_mafia.exe	95
PID 3288 wrote to memory of 2044	3288	2025-02-07_6d71fd428ebc45bce57bfd19b39008ae_mafia.exe	97
PID 3288 wrote to memory of 2044	3288	2025-02-07_6d71fd428ebc45bce57bfd19b39008ae_mafia.exe	97
PID 3288 wrote to memory of 2044	3288	2025-02-07_6d71fd428ebc45bce57bfd19b39008ae_mafia.exe	97
PID 3288 wrote to memory of 3592	3288	2025-02-07_6d71fd428ebc45bce57bfd19b39008ae_mafia.exe	100
PID 3288 wrote to memory of 3592	3288	2025-02-07_6d71fd428ebc45bce57bfd19b39008ae_mafia.exe	100
PID 3288 wrote to memory of 3592	3288	2025-02-07_6d71fd428ebc45bce57bfd19b39008ae_mafia.exe	100
PID 4820 wrote to memory of 3788	4820	sstezayg.exe	101
PID 4820 wrote to memory of 3788	4820	sstezayg.exe	101
PID 4820 wrote to memory of 3788	4820	sstezayg.exe	101
PID 4820 wrote to memory of 3788	4820	sstezayg.exe	101
PID 4820 wrote to memory of 3788	4820	sstezayg.exe	101

C:\Users\Admin\AppData\Local\Temp\2025-02-07_6d71fd428ebc45bce57bfd19b39008ae_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-07_6d71fd428ebc45bce57bfd19b39008ae_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3288
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mmhzjhxk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2600
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\sstezayg.exe" C:\Windows\SysWOW64\mmhzjhxk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5052
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mmhzjhxk binPath= "C:\Windows\SysWOW64\mmhzjhxk\sstezayg.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-07_6d71fd428ebc45bce57bfd19b39008ae_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3256
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mmhzjhxk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4992
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mmhzjhxk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2044
- 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:3592
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3288 -s 1040
  2⤵
  - Program crash
  PID:3160

C:\Windows\SysWOW64\mmhzjhxk\sstezayg.exe
C:\Windows\SysWOW64\mmhzjhxk\sstezayg.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-07_6d71fd428ebc45bce57bfd19b39008ae_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4820
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3788
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4820 -s 516
  2⤵
  - Program crash
  PID:2888

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4820 -ip 4820
1⤵
PID:472

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 3288 -ip 3288
1⤵
PID:2792

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIxIiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDU5MjEiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxODE5ODA3NzAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1MTM0NjI2MTk3Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:4512

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\sstezayg.exe

Filesize
14.8MB

MD5
b1fae94afa283654000a8d7a78d1b104

SHA1
dde725fd0f524ee49848452bb5be1c7413badf43

SHA256
c8cf802109f95a861a27a25eaae703d5bc220ee2a580d169df49363fe530836d

SHA512
c9cb473738660a1228543461d32cc5ca6b8a964c233a718ff0eefa5190de9417bcf2ab8146e7eb728ea12279f3f99617bedcbb162052cf6be50241eb0d9a84c8

Download Submit
memory/3288-1-0x00000000030E0000-0x00000000031E0000-memory.dmp

Filesize
1024KB

Download
memory/3288-2-0x0000000002EE0000-0x0000000002EF3000-memory.dmp

Filesize
76KB

Download
memory/3288-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3288-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3288-12-0x0000000002EE0000-0x0000000002EF3000-memory.dmp

Filesize
76KB

Download
memory/3288-10-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/3788-8-0x00000000003C0000-0x00000000003D5000-memory.dmp

Filesize
84KB

Download
memory/3788-14-0x00000000003C0000-0x00000000003D5000-memory.dmp

Filesize
84KB

Download
memory/3788-15-0x00000000003C0000-0x00000000003D5000-memory.dmp

Filesize
84KB

Download
memory/4820-11-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads