tofsee | c1048cd43182a46e41b0839b55e03ba85b0945f974d5b9b1a606172f3d3bad5d

General

Target

2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe
Size

13.2MB
MD5

21b4465219a1a154003bb8b84360333d
SHA1

444742300be0feace5aeedec675d3a551cfa4f6a
SHA256

c1048cd43182a46e41b0839b55e03ba85b0945f974d5b9b1a606172f3d3bad5d
SHA512

64615c3b1d61f18059b3b579d4320d427e912eba10a3d05992b5610135078707353bd3200f2c8f99f18e2b3d169c0d6235948456437d46541ecd34c11aba0c8c
SSDEEP

24576:YpomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttf:0oo

Score

10^/10

tofsee discovery evasion 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

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
1108	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\cbylqkeu\ImagePath = "C:\\Windows\\SysWOW64\\cbylqkeu\\fncgtraa.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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe

Deletes itself 1 IoCs

pid	Process
4220	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3668	fncgtraa.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3668 set thread context of 4220	3668	fncgtraa.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
4460	sc.exe
1500	sc.exe
1800	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
3348	1156	WerFault.exe	81
632	3668	WerFault.exe	92

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	sc.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	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	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fncgtraa.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1156 wrote to memory of 3052	1156	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	82
PID 1156 wrote to memory of 3052	1156	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	82
PID 1156 wrote to memory of 3052	1156	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	82
PID 1156 wrote to memory of 4168	1156	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	84
PID 1156 wrote to memory of 4168	1156	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	84
PID 1156 wrote to memory of 4168	1156	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	84
PID 1156 wrote to memory of 4460	1156	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	86
PID 1156 wrote to memory of 4460	1156	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	86
PID 1156 wrote to memory of 4460	1156	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	86
PID 1156 wrote to memory of 1500	1156	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	88
PID 1156 wrote to memory of 1500	1156	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	88
PID 1156 wrote to memory of 1500	1156	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	88
PID 1156 wrote to memory of 1800	1156	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	90
PID 1156 wrote to memory of 1800	1156	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	90
PID 1156 wrote to memory of 1800	1156	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	90
PID 1156 wrote to memory of 1108	1156	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	93
PID 1156 wrote to memory of 1108	1156	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	93
PID 1156 wrote to memory of 1108	1156	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	93
PID 3668 wrote to memory of 4220	3668	fncgtraa.exe	98
PID 3668 wrote to memory of 4220	3668	fncgtraa.exe	98
PID 3668 wrote to memory of 4220	3668	fncgtraa.exe	98
PID 3668 wrote to memory of 4220	3668	fncgtraa.exe	98
PID 3668 wrote to memory of 4220	3668	fncgtraa.exe	98

C:\Users\Admin\AppData\Local\Temp\2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1156
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cbylqkeu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3052
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fncgtraa.exe" C:\Windows\SysWOW64\cbylqkeu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4168
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create cbylqkeu binPath= "C:\Windows\SysWOW64\cbylqkeu\fncgtraa.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4460
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description cbylqkeu "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1500
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start cbylqkeu
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1800
- 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:1108
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1156 -s 656
  2⤵
  - Program crash
  PID:3348

C:\Windows\SysWOW64\cbylqkeu\fncgtraa.exe
C:\Windows\SysWOW64\cbylqkeu\fncgtraa.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3668
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4220
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3668 -s 512
  2⤵
  - Program crash
  PID:632

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1156 -ip 1156
1⤵
PID:2664

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 3668 -ip 3668
1⤵
PID:2020

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\fncgtraa.exe

Filesize
11.5MB

MD5
ca8bbce7215ed1a385394e76fdca2b03

SHA1
aa059ac60528f1a6ca73db0aaa9b93c206f44841

SHA256
03338ce0eb766d10d70db076a0fb39a4f5736715442de0acc42951b34c8b95c3

SHA512
95de143ea382e85f6902b0edc55f63eded21e432f9da3961f71e376436cae47dec8d77c86746aeeafaeab11919db6780de4800c029166e3f517bbe3b31be869b

Download Submit
memory/1156-8-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/1156-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1156-2-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/1156-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1156-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1156-1-0x00000000005E0000-0x00000000006E0000-memory.dmp

Filesize
1024KB

Download
memory/3668-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3668-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3668-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3668-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4220-14-0x00000000010B0000-0x00000000010C5000-memory.dmp

Filesize
84KB

Download
memory/4220-16-0x00000000010B0000-0x00000000010C5000-memory.dmp

Filesize
84KB

Download
memory/4220-17-0x00000000010B0000-0x00000000010C5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads