tofsee | 32cd448ae1c736f0639bd2c7d799e54e417fb62e61ae99d4d9248b8b18f6d0a4

General

Target

2025-01-28_14ab03aca558b863d0361d4226716f55_mafia.exe
Size

10.9MB
MD5

14ab03aca558b863d0361d4226716f55
SHA1

facb55765248f9591184d1c7cfca8ecc7c251663
SHA256

32cd448ae1c736f0639bd2c7d799e54e417fb62e61ae99d4d9248b8b18f6d0a4
SHA512

be03596a01367ee6b75e05409aa377523aa938c8990240d39dd8b366f30afa5cc5b04050b808a85d278c97a2a37f826c205b2a1626182bc5d5d83e7885354155
SSDEEP

24576:TpomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttN:Voo

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
4444	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\nryanfvm\ImagePath = "C:\\Windows\\SysWOW64\\nryanfvm\\sjfmdcgk.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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	2025-01-28_14ab03aca558b863d0361d4226716f55_mafia.exe

Deletes itself 1 IoCs

pid	Process
2532	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
224	sjfmdcgk.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 224 set thread context of 2532	224	sjfmdcgk.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
3536	sc.exe
2500	sc.exe
456	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
3120	2452	WerFault.exe	81
2144	224	WerFault.exe	94

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-28_14ab03aca558b863d0361d4226716f55_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sjfmdcgk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2452 wrote to memory of 4616	2452	2025-01-28_14ab03aca558b863d0361d4226716f55_mafia.exe	84
PID 2452 wrote to memory of 4616	2452	2025-01-28_14ab03aca558b863d0361d4226716f55_mafia.exe	84
PID 2452 wrote to memory of 4616	2452	2025-01-28_14ab03aca558b863d0361d4226716f55_mafia.exe	84
PID 2452 wrote to memory of 2384	2452	2025-01-28_14ab03aca558b863d0361d4226716f55_mafia.exe	86
PID 2452 wrote to memory of 2384	2452	2025-01-28_14ab03aca558b863d0361d4226716f55_mafia.exe	86
PID 2452 wrote to memory of 2384	2452	2025-01-28_14ab03aca558b863d0361d4226716f55_mafia.exe	86
PID 2452 wrote to memory of 3536	2452	2025-01-28_14ab03aca558b863d0361d4226716f55_mafia.exe	88
PID 2452 wrote to memory of 3536	2452	2025-01-28_14ab03aca558b863d0361d4226716f55_mafia.exe	88
PID 2452 wrote to memory of 3536	2452	2025-01-28_14ab03aca558b863d0361d4226716f55_mafia.exe	88
PID 2452 wrote to memory of 2500	2452	2025-01-28_14ab03aca558b863d0361d4226716f55_mafia.exe	90
PID 2452 wrote to memory of 2500	2452	2025-01-28_14ab03aca558b863d0361d4226716f55_mafia.exe	90
PID 2452 wrote to memory of 2500	2452	2025-01-28_14ab03aca558b863d0361d4226716f55_mafia.exe	90
PID 2452 wrote to memory of 456	2452	2025-01-28_14ab03aca558b863d0361d4226716f55_mafia.exe	92
PID 2452 wrote to memory of 456	2452	2025-01-28_14ab03aca558b863d0361d4226716f55_mafia.exe	92
PID 2452 wrote to memory of 456	2452	2025-01-28_14ab03aca558b863d0361d4226716f55_mafia.exe	92
PID 2452 wrote to memory of 4444	2452	2025-01-28_14ab03aca558b863d0361d4226716f55_mafia.exe	95
PID 2452 wrote to memory of 4444	2452	2025-01-28_14ab03aca558b863d0361d4226716f55_mafia.exe	95
PID 2452 wrote to memory of 4444	2452	2025-01-28_14ab03aca558b863d0361d4226716f55_mafia.exe	95
PID 224 wrote to memory of 2532	224	sjfmdcgk.exe	101
PID 224 wrote to memory of 2532	224	sjfmdcgk.exe	101
PID 224 wrote to memory of 2532	224	sjfmdcgk.exe	101
PID 224 wrote to memory of 2532	224	sjfmdcgk.exe	101
PID 224 wrote to memory of 2532	224	sjfmdcgk.exe	101

C:\Users\Admin\AppData\Local\Temp\2025-01-28_14ab03aca558b863d0361d4226716f55_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-28_14ab03aca558b863d0361d4226716f55_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2452
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nryanfvm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4616
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\sjfmdcgk.exe" C:\Windows\SysWOW64\nryanfvm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2384
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nryanfvm binPath= "C:\Windows\SysWOW64\nryanfvm\sjfmdcgk.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-28_14ab03aca558b863d0361d4226716f55_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3536
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nryanfvm "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2500
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nryanfvm
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:456
- 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:4444
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2452 -s 1040
  2⤵
  - Program crash
  PID:3120

C:\Windows\SysWOW64\nryanfvm\sjfmdcgk.exe
C:\Windows\SysWOW64\nryanfvm\sjfmdcgk.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-28_14ab03aca558b863d0361d4226716f55_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:224
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2532
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 224 -s 512
  2⤵
  - Program crash
  PID:2144

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2452 -ip 2452
1⤵
PID:1692

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 224 -ip 224
1⤵
PID:4708

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\sjfmdcgk.exe

Filesize
11.9MB

MD5
77f10e3bb02f6e108df178e503167bc1

SHA1
08c49cab04c126a19624af3f0953701b10b1d9bc

SHA256
45d54a09a32b1e41aa220ae89a21b58586231757ddf28d73ee33f82f05e52d14

SHA512
d1368b7031462fe46bf8eb8a464accf2b3c2418ceba3d3ad80884c43889ada43f8751d34a9e0eafcaf36fa7aaadc143bd20e01f7960e327d69f33e7663dd234d

Download Submit
memory/224-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/224-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/224-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/224-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2452-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2452-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/2452-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2452-8-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/2452-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2452-1-0x0000000000730000-0x0000000000830000-memory.dmp

Filesize
1024KB

Download
memory/2532-14-0x0000000001200000-0x0000000001215000-memory.dmp

Filesize
84KB

Download
memory/2532-16-0x0000000001200000-0x0000000001215000-memory.dmp

Filesize
84KB

Download
memory/2532-17-0x0000000001200000-0x0000000001215000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads