tofsee | 479aadd291614f1df773337dcd8b7cb82e73fc262f051d2cb4871772a63d45c4

General

Target

2025-02-12_19ed6279ab2a8fe074a9882d4ea92253_mafia.exe
Size

15.0MB
MD5

19ed6279ab2a8fe074a9882d4ea92253
SHA1

f0d79377f92ea81c6615ed750be2e579af6e69b6
SHA256

479aadd291614f1df773337dcd8b7cb82e73fc262f051d2cb4871772a63d45c4
SHA512

8f5bff41df4c180fd97542984005d22341c920f6c5ef90357cb7e4c0c552f2a9c4c38e42f817c6c2fb1a18beb6987d1c773b269e00afb3597db5ea5c5b5dde7d
SSDEEP

49152:4qE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPs:4qtYc3t

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	1004	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
4380	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\rxeygtlg\ImagePath = "C:\\Windows\\SysWOW64\\rxeygtlg\\tnnepypr.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-1-5-21-194335498-2604837297-537231065-1000\Control Panel\International\Geo\Nation	2025-02-12_19ed6279ab2a8fe074a9882d4ea92253_mafia.exe

Deletes itself 1 IoCs

pid	Process
4776	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1452	tnnepypr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1452 set thread context of 4776	1452	tnnepypr.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
1524	sc.exe
996	sc.exe
4720	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
2756	1452	WerFault.exe	101
3000	3652	WerFault.exe	87

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	2025-02-12_19ed6279ab2a8fe074a9882d4ea92253_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	tnnepypr.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
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

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
3792	MicrosoftEdgeUpdate.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3652 wrote to memory of 116	3652	2025-02-12_19ed6279ab2a8fe074a9882d4ea92253_mafia.exe	91
PID 3652 wrote to memory of 116	3652	2025-02-12_19ed6279ab2a8fe074a9882d4ea92253_mafia.exe	91
PID 3652 wrote to memory of 116	3652	2025-02-12_19ed6279ab2a8fe074a9882d4ea92253_mafia.exe	91
PID 3652 wrote to memory of 5116	3652	2025-02-12_19ed6279ab2a8fe074a9882d4ea92253_mafia.exe	93
PID 3652 wrote to memory of 5116	3652	2025-02-12_19ed6279ab2a8fe074a9882d4ea92253_mafia.exe	93
PID 3652 wrote to memory of 5116	3652	2025-02-12_19ed6279ab2a8fe074a9882d4ea92253_mafia.exe	93
PID 3652 wrote to memory of 1524	3652	2025-02-12_19ed6279ab2a8fe074a9882d4ea92253_mafia.exe	95
PID 3652 wrote to memory of 1524	3652	2025-02-12_19ed6279ab2a8fe074a9882d4ea92253_mafia.exe	95
PID 3652 wrote to memory of 1524	3652	2025-02-12_19ed6279ab2a8fe074a9882d4ea92253_mafia.exe	95
PID 3652 wrote to memory of 996	3652	2025-02-12_19ed6279ab2a8fe074a9882d4ea92253_mafia.exe	97
PID 3652 wrote to memory of 996	3652	2025-02-12_19ed6279ab2a8fe074a9882d4ea92253_mafia.exe	97
PID 3652 wrote to memory of 996	3652	2025-02-12_19ed6279ab2a8fe074a9882d4ea92253_mafia.exe	97
PID 3652 wrote to memory of 4720	3652	2025-02-12_19ed6279ab2a8fe074a9882d4ea92253_mafia.exe	99
PID 3652 wrote to memory of 4720	3652	2025-02-12_19ed6279ab2a8fe074a9882d4ea92253_mafia.exe	99
PID 3652 wrote to memory of 4720	3652	2025-02-12_19ed6279ab2a8fe074a9882d4ea92253_mafia.exe	99
PID 1452 wrote to memory of 4776	1452	tnnepypr.exe	102
PID 1452 wrote to memory of 4776	1452	tnnepypr.exe	102
PID 1452 wrote to memory of 4776	1452	tnnepypr.exe	102
PID 1452 wrote to memory of 4776	1452	tnnepypr.exe	102
PID 1452 wrote to memory of 4776	1452	tnnepypr.exe	102
PID 3652 wrote to memory of 4380	3652	2025-02-12_19ed6279ab2a8fe074a9882d4ea92253_mafia.exe	105
PID 3652 wrote to memory of 4380	3652	2025-02-12_19ed6279ab2a8fe074a9882d4ea92253_mafia.exe	105
PID 3652 wrote to memory of 4380	3652	2025-02-12_19ed6279ab2a8fe074a9882d4ea92253_mafia.exe	105

C:\Users\Admin\AppData\Local\Temp\2025-02-12_19ed6279ab2a8fe074a9882d4ea92253_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-12_19ed6279ab2a8fe074a9882d4ea92253_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3652
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rxeygtlg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:116
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tnnepypr.exe" C:\Windows\SysWOW64\rxeygtlg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5116
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create rxeygtlg binPath= "C:\Windows\SysWOW64\rxeygtlg\tnnepypr.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-12_19ed6279ab2a8fe074a9882d4ea92253_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1524
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description rxeygtlg "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:996
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start rxeygtlg
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4720
- 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:4380
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3652 -s 1324
  2⤵
  - Program crash
  PID:3000

C:\Windows\SysWOW64\rxeygtlg\tnnepypr.exe
C:\Windows\SysWOW64\rxeygtlg\tnnepypr.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-12_19ed6279ab2a8fe074a9882d4ea92253_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1452
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4776
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1452 -s 556
  2⤵
  - Program crash
  PID:2756

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1452 -ip 1452
1⤵
PID:2816

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 3652 -ip 3652
1⤵
PID:5060

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSI1IiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDcxNzgiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxOTY4MDM3MTAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1MDM5MjQ2ODM3Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:3792

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\tnnepypr.exe

Filesize
14.5MB

MD5
3f4c4c314a9e1e3500b0113f8815655c

SHA1
f364aebe26f744c276f7944bd52c57eae67a596e

SHA256
9ec3f86d763f85d37b64cec67cabe5a02420d653890b9ece64158b7540ef41fe

SHA512
3e0bad40bd20ddead45e2571760049d2044fe3ebae59ac5efd3d8b5bb073d5f56492320002eda9313ef202fff254a58956ddaf8e4f29bd09997441ea07598dec

Download Submit
memory/1452-10-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/3652-1-0x0000000002FA0000-0x00000000030A0000-memory.dmp

Filesize
1024KB

Download
memory/3652-2-0x0000000002E10000-0x0000000002E23000-memory.dmp

Filesize
76KB

Download
memory/3652-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3652-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3652-12-0x0000000002E10000-0x0000000002E23000-memory.dmp

Filesize
76KB

Download
memory/3652-11-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/4776-8-0x0000000000950000-0x0000000000965000-memory.dmp

Filesize
84KB

Download
memory/4776-14-0x0000000000950000-0x0000000000965000-memory.dmp

Filesize
84KB

Download
memory/4776-15-0x0000000000950000-0x0000000000965000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads