tofsee | 50702048e2c24d40bc9237f84935d639c77c456714d01f01b510dc541a61207e

General

Target

2025-01-13_55b741de0468d7b41242082d699a722f_mafia.exe
Size

11.8MB
MD5

55b741de0468d7b41242082d699a722f
SHA1

e724edb7ff73d1d8989df2baac16a337f02c7668
SHA256

50702048e2c24d40bc9237f84935d639c77c456714d01f01b510dc541a61207e
SHA512

fca53d3688ef8b8c0600ee09814141329aa57acbe1640cb3c049b0ba9e9867f4cb38bcfb0209817027237b781c64d6662abfc9d0337d282c3c5336ead96141a0
SSDEEP

24576:NEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZz:2fot

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
4804	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\pktrsnjk\ImagePath = "C:\\Windows\\SysWOW64\\pktrsnjk\\fbttqfes.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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	2025-01-13_55b741de0468d7b41242082d699a722f_mafia.exe

Deletes itself 1 IoCs

pid	Process
2640	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2436	fbttqfes.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2436 set thread context of 2640	2436	fbttqfes.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
1272	sc.exe
2292	sc.exe
1248	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
2976	2968	WerFault.exe	81
5004	2436	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	fbttqfes.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
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	2025-01-13_55b741de0468d7b41242082d699a722f_mafia.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2968 wrote to memory of 3864	2968	2025-01-13_55b741de0468d7b41242082d699a722f_mafia.exe	82
PID 2968 wrote to memory of 3864	2968	2025-01-13_55b741de0468d7b41242082d699a722f_mafia.exe	82
PID 2968 wrote to memory of 3864	2968	2025-01-13_55b741de0468d7b41242082d699a722f_mafia.exe	82
PID 2968 wrote to memory of 4984	2968	2025-01-13_55b741de0468d7b41242082d699a722f_mafia.exe	84
PID 2968 wrote to memory of 4984	2968	2025-01-13_55b741de0468d7b41242082d699a722f_mafia.exe	84
PID 2968 wrote to memory of 4984	2968	2025-01-13_55b741de0468d7b41242082d699a722f_mafia.exe	84
PID 2968 wrote to memory of 1272	2968	2025-01-13_55b741de0468d7b41242082d699a722f_mafia.exe	86
PID 2968 wrote to memory of 1272	2968	2025-01-13_55b741de0468d7b41242082d699a722f_mafia.exe	86
PID 2968 wrote to memory of 1272	2968	2025-01-13_55b741de0468d7b41242082d699a722f_mafia.exe	86
PID 2968 wrote to memory of 2292	2968	2025-01-13_55b741de0468d7b41242082d699a722f_mafia.exe	88
PID 2968 wrote to memory of 2292	2968	2025-01-13_55b741de0468d7b41242082d699a722f_mafia.exe	88
PID 2968 wrote to memory of 2292	2968	2025-01-13_55b741de0468d7b41242082d699a722f_mafia.exe	88
PID 2968 wrote to memory of 1248	2968	2025-01-13_55b741de0468d7b41242082d699a722f_mafia.exe	90
PID 2968 wrote to memory of 1248	2968	2025-01-13_55b741de0468d7b41242082d699a722f_mafia.exe	90
PID 2968 wrote to memory of 1248	2968	2025-01-13_55b741de0468d7b41242082d699a722f_mafia.exe	90
PID 2968 wrote to memory of 4804	2968	2025-01-13_55b741de0468d7b41242082d699a722f_mafia.exe	93
PID 2968 wrote to memory of 4804	2968	2025-01-13_55b741de0468d7b41242082d699a722f_mafia.exe	93
PID 2968 wrote to memory of 4804	2968	2025-01-13_55b741de0468d7b41242082d699a722f_mafia.exe	93
PID 2436 wrote to memory of 2640	2436	fbttqfes.exe	98
PID 2436 wrote to memory of 2640	2436	fbttqfes.exe	98
PID 2436 wrote to memory of 2640	2436	fbttqfes.exe	98
PID 2436 wrote to memory of 2640	2436	fbttqfes.exe	98
PID 2436 wrote to memory of 2640	2436	fbttqfes.exe	98

C:\Users\Admin\AppData\Local\Temp\2025-01-13_55b741de0468d7b41242082d699a722f_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-13_55b741de0468d7b41242082d699a722f_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2968
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pktrsnjk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3864
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fbttqfes.exe" C:\Windows\SysWOW64\pktrsnjk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4984
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create pktrsnjk binPath= "C:\Windows\SysWOW64\pktrsnjk\fbttqfes.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-13_55b741de0468d7b41242082d699a722f_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1272
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description pktrsnjk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2292
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start pktrsnjk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1248
- 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:4804
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2968 -s 1040
  2⤵
  - Program crash
  PID:2976

C:\Windows\SysWOW64\pktrsnjk\fbttqfes.exe
C:\Windows\SysWOW64\pktrsnjk\fbttqfes.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-13_55b741de0468d7b41242082d699a722f_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2436
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2640
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2436 -s 508
  2⤵
  - Program crash
  PID:5004

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2968 -ip 2968
1⤵
PID:4236

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2436 -ip 2436
1⤵
PID:2080

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\fbttqfes.exe

Filesize
14.5MB

MD5
0a1bbd1eb08cb259277887125e03ab39

SHA1
a10f9901770bd580847946886263d6400288683d

SHA256
99facd736790d9ca469dac02cd0a09d34f987adc1629cb136cc324cd84380f9a

SHA512
24b05705848ae2f3b236e1bfcb71282cc70865fe0324d7d8497ebfb0093cc4b987a46ec82829aaeb3865199046c149c2fb404cc8da871e881777be50d8b08397

Download Submit
memory/2436-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2436-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2436-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2436-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2640-14-0x0000000000E90000-0x0000000000EA5000-memory.dmp

Filesize
84KB

Download
memory/2640-16-0x0000000000E90000-0x0000000000EA5000-memory.dmp

Filesize
84KB

Download
memory/2640-17-0x0000000000E90000-0x0000000000EA5000-memory.dmp

Filesize
84KB

Download
memory/2968-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2968-2-0x0000000000670000-0x0000000000683000-memory.dmp

Filesize
76KB

Download
memory/2968-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2968-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2968-8-0x0000000000670000-0x0000000000683000-memory.dmp

Filesize
76KB

Download
memory/2968-1-0x0000000000700000-0x0000000000800000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads