tofsee | 0fa336e93cc488f32dac6dbd9e88daf8a41af8974f76ca5eb338e7fc6dcd10ac

General

Target

2025-01-31_19a4ef3a1aa50b13ea871c539ad51796_mafia.exe
Size

10.7MB
MD5

19a4ef3a1aa50b13ea871c539ad51796
SHA1

1c961f279f018478b8640cffdd6e0b071600b25f
SHA256

0fa336e93cc488f32dac6dbd9e88daf8a41af8974f76ca5eb338e7fc6dcd10ac
SHA512

4678055e5a44bd088dd56e7e9592b13db112624c881902bb88be7cee3d2ea0e29ef2468cdef34fdce6fd392d57da08308d333e63da8475e7daa1b658194a10ac
SSDEEP

49152:YqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPc:YqtYc3l

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
4416	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\pgdauoyg\ImagePath = "C:\\Windows\\SysWOW64\\pgdauoyg\\sunyfnbr.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-1-5-21-2089655958-977706906-1981639424-1000\Control Panel\International\Geo\Nation	2025-01-31_19a4ef3a1aa50b13ea871c539ad51796_mafia.exe

Deletes itself 1 IoCs

pid	Process
3148	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2852	sunyfnbr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2852 set thread context of 3148	2852	sunyfnbr.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
1716	sc.exe
4240	sc.exe
4868	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
1452	2852	WerFault.exe	96
1108	220	WerFault.exe	82

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	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	sunyfnbr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-31_19a4ef3a1aa50b13ea871c539ad51796_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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 220 wrote to memory of 1724	220	2025-01-31_19a4ef3a1aa50b13ea871c539ad51796_mafia.exe	86
PID 220 wrote to memory of 1724	220	2025-01-31_19a4ef3a1aa50b13ea871c539ad51796_mafia.exe	86
PID 220 wrote to memory of 1724	220	2025-01-31_19a4ef3a1aa50b13ea871c539ad51796_mafia.exe	86
PID 220 wrote to memory of 2812	220	2025-01-31_19a4ef3a1aa50b13ea871c539ad51796_mafia.exe	88
PID 220 wrote to memory of 2812	220	2025-01-31_19a4ef3a1aa50b13ea871c539ad51796_mafia.exe	88
PID 220 wrote to memory of 2812	220	2025-01-31_19a4ef3a1aa50b13ea871c539ad51796_mafia.exe	88
PID 220 wrote to memory of 1716	220	2025-01-31_19a4ef3a1aa50b13ea871c539ad51796_mafia.exe	90
PID 220 wrote to memory of 1716	220	2025-01-31_19a4ef3a1aa50b13ea871c539ad51796_mafia.exe	90
PID 220 wrote to memory of 1716	220	2025-01-31_19a4ef3a1aa50b13ea871c539ad51796_mafia.exe	90
PID 220 wrote to memory of 4240	220	2025-01-31_19a4ef3a1aa50b13ea871c539ad51796_mafia.exe	92
PID 220 wrote to memory of 4240	220	2025-01-31_19a4ef3a1aa50b13ea871c539ad51796_mafia.exe	92
PID 220 wrote to memory of 4240	220	2025-01-31_19a4ef3a1aa50b13ea871c539ad51796_mafia.exe	92
PID 220 wrote to memory of 4868	220	2025-01-31_19a4ef3a1aa50b13ea871c539ad51796_mafia.exe	94
PID 220 wrote to memory of 4868	220	2025-01-31_19a4ef3a1aa50b13ea871c539ad51796_mafia.exe	94
PID 220 wrote to memory of 4868	220	2025-01-31_19a4ef3a1aa50b13ea871c539ad51796_mafia.exe	94
PID 220 wrote to memory of 4416	220	2025-01-31_19a4ef3a1aa50b13ea871c539ad51796_mafia.exe	97
PID 220 wrote to memory of 4416	220	2025-01-31_19a4ef3a1aa50b13ea871c539ad51796_mafia.exe	97
PID 220 wrote to memory of 4416	220	2025-01-31_19a4ef3a1aa50b13ea871c539ad51796_mafia.exe	97
PID 2852 wrote to memory of 3148	2852	sunyfnbr.exe	100
PID 2852 wrote to memory of 3148	2852	sunyfnbr.exe	100
PID 2852 wrote to memory of 3148	2852	sunyfnbr.exe	100
PID 2852 wrote to memory of 3148	2852	sunyfnbr.exe	100
PID 2852 wrote to memory of 3148	2852	sunyfnbr.exe	100

C:\Users\Admin\AppData\Local\Temp\2025-01-31_19a4ef3a1aa50b13ea871c539ad51796_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-31_19a4ef3a1aa50b13ea871c539ad51796_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:220
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pgdauoyg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1724
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\sunyfnbr.exe" C:\Windows\SysWOW64\pgdauoyg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2812
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create pgdauoyg binPath= "C:\Windows\SysWOW64\pgdauoyg\sunyfnbr.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-31_19a4ef3a1aa50b13ea871c539ad51796_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1716
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description pgdauoyg "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4240
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start pgdauoyg
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4868
- 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:4416
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 220 -s 1304
  2⤵
  - Program crash
  PID:1108

C:\Windows\SysWOW64\pgdauoyg\sunyfnbr.exe
C:\Windows\SysWOW64\pgdauoyg\sunyfnbr.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-31_19a4ef3a1aa50b13ea871c539ad51796_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2852
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3148
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2852 -s 508
  2⤵
  - Program crash
  PID:1452

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2852 -ip 2852
1⤵
PID:2400

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 220 -ip 220
1⤵
PID:4828

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\sunyfnbr.exe

Filesize
10.7MB

MD5
95515c22bbf0a28906e0d13014dbf580

SHA1
8c888617a76690733dba0987e5dea3544666e66c

SHA256
bc699f74cde116ca5f31ea504ee845dab0ae5e3b84b8bd484c46c4af2d58abc2

SHA512
6c18c0ecdb37123bbf5876dbe38343fd9f9421f38be139a8db74892cf052433dc6dd95894dc4431e81cee69f6acac66e393522285544b916c619214ad94fac51

Download Submit
memory/220-1-0x0000000002F40000-0x0000000003040000-memory.dmp

Filesize
1024KB

Download
memory/220-2-0x0000000002F20000-0x0000000002F33000-memory.dmp

Filesize
76KB

Download
memory/220-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/220-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/220-12-0x0000000002F20000-0x0000000002F33000-memory.dmp

Filesize
76KB

Download
memory/220-11-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/2852-10-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/3148-8-0x00000000005C0000-0x00000000005D5000-memory.dmp

Filesize
84KB

Download
memory/3148-14-0x00000000005C0000-0x00000000005D5000-memory.dmp

Filesize
84KB

Download
memory/3148-15-0x00000000005C0000-0x00000000005D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads