tofsee | 8e4a37d0837c93caa41d32f29d3fc6b9d0096e0c1431a23a85520b283dbaa39d

General

Target

2025-02-01_72f8465de7af8408681c24b20d5d2e9f_mafia.exe
Size

10.3MB
MD5

72f8465de7af8408681c24b20d5d2e9f
SHA1

78a621cec60ccc7c3238a81790ba19a0e6e516c4
SHA256

8e4a37d0837c93caa41d32f29d3fc6b9d0096e0c1431a23a85520b283dbaa39d
SHA512

6365d556defd3669c37565d81b2baeaec7781ca52182667edb371957ef0a78063034ac1840d3a1d1827c04f38397f41ef6fe7af1a9edfd51660c1a5fe7c0fcca
SSDEEP

6144:VLQ1p/2p5e+D2jFHO+iZoy6u9FlfrXEz9NQNQNQNQNQNQNQNQNQNQNQNQNQNQNQ4:mTYe+D2jFu+iZoUFhAz

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
4268	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\fvrkerae\ImagePath = "C:\\Windows\\SysWOW64\\fvrkerae\\uthjxuvn.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	2025-02-01_72f8465de7af8408681c24b20d5d2e9f_mafia.exe

Deletes itself 1 IoCs

pid	Process
3800	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3136	uthjxuvn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3136 set thread context of 3800	3136	uthjxuvn.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
1324	sc.exe
4976	sc.exe
4480	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
4332	3136	WerFault.exe	98
948	4328	WerFault.exe	84

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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-01_72f8465de7af8408681c24b20d5d2e9f_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	netsh.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	uthjxuvn.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4328 wrote to memory of 2308	4328	2025-02-01_72f8465de7af8408681c24b20d5d2e9f_mafia.exe	88
PID 4328 wrote to memory of 2308	4328	2025-02-01_72f8465de7af8408681c24b20d5d2e9f_mafia.exe	88
PID 4328 wrote to memory of 2308	4328	2025-02-01_72f8465de7af8408681c24b20d5d2e9f_mafia.exe	88
PID 4328 wrote to memory of 3224	4328	2025-02-01_72f8465de7af8408681c24b20d5d2e9f_mafia.exe	90
PID 4328 wrote to memory of 3224	4328	2025-02-01_72f8465de7af8408681c24b20d5d2e9f_mafia.exe	90
PID 4328 wrote to memory of 3224	4328	2025-02-01_72f8465de7af8408681c24b20d5d2e9f_mafia.exe	90
PID 4328 wrote to memory of 1324	4328	2025-02-01_72f8465de7af8408681c24b20d5d2e9f_mafia.exe	92
PID 4328 wrote to memory of 1324	4328	2025-02-01_72f8465de7af8408681c24b20d5d2e9f_mafia.exe	92
PID 4328 wrote to memory of 1324	4328	2025-02-01_72f8465de7af8408681c24b20d5d2e9f_mafia.exe	92
PID 4328 wrote to memory of 4976	4328	2025-02-01_72f8465de7af8408681c24b20d5d2e9f_mafia.exe	94
PID 4328 wrote to memory of 4976	4328	2025-02-01_72f8465de7af8408681c24b20d5d2e9f_mafia.exe	94
PID 4328 wrote to memory of 4976	4328	2025-02-01_72f8465de7af8408681c24b20d5d2e9f_mafia.exe	94
PID 4328 wrote to memory of 4480	4328	2025-02-01_72f8465de7af8408681c24b20d5d2e9f_mafia.exe	96
PID 4328 wrote to memory of 4480	4328	2025-02-01_72f8465de7af8408681c24b20d5d2e9f_mafia.exe	96
PID 4328 wrote to memory of 4480	4328	2025-02-01_72f8465de7af8408681c24b20d5d2e9f_mafia.exe	96
PID 4328 wrote to memory of 4268	4328	2025-02-01_72f8465de7af8408681c24b20d5d2e9f_mafia.exe	99
PID 4328 wrote to memory of 4268	4328	2025-02-01_72f8465de7af8408681c24b20d5d2e9f_mafia.exe	99
PID 4328 wrote to memory of 4268	4328	2025-02-01_72f8465de7af8408681c24b20d5d2e9f_mafia.exe	99
PID 3136 wrote to memory of 3800	3136	uthjxuvn.exe	103
PID 3136 wrote to memory of 3800	3136	uthjxuvn.exe	103
PID 3136 wrote to memory of 3800	3136	uthjxuvn.exe	103
PID 3136 wrote to memory of 3800	3136	uthjxuvn.exe	103
PID 3136 wrote to memory of 3800	3136	uthjxuvn.exe	103

C:\Users\Admin\AppData\Local\Temp\2025-02-01_72f8465de7af8408681c24b20d5d2e9f_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_72f8465de7af8408681c24b20d5d2e9f_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4328
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fvrkerae\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2308
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\uthjxuvn.exe" C:\Windows\SysWOW64\fvrkerae\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3224
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fvrkerae binPath= "C:\Windows\SysWOW64\fvrkerae\uthjxuvn.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_72f8465de7af8408681c24b20d5d2e9f_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1324
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fvrkerae "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4976
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fvrkerae
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4480
- 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:4268
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4328 -s 1028
  2⤵
  - Program crash
  PID:948

C:\Windows\SysWOW64\fvrkerae\uthjxuvn.exe
C:\Windows\SysWOW64\fvrkerae\uthjxuvn.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_72f8465de7af8408681c24b20d5d2e9f_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3136
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3800
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3136 -s 516
  2⤵
  - Program crash
  PID:4332

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4328 -ip 4328
1⤵
PID:1008

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 3136 -ip 3136
1⤵
PID:2288

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\uthjxuvn.exe

Filesize
10.7MB

MD5
3c3fadf154d28dcdafa64fa6049d5aa2

SHA1
7a4beaf924e6126219a0894097320dac60098f68

SHA256
ecff379682c11b6e5f335d48ace6911d6ae1668090b0a458b915c5cb4eb3fd9e

SHA512
7233c8dffc171f10b8c228cce2528d202a2ab02648476d3826a248cf2ddafea83bc37582c5384c19987e5e621bfe2f0eec91805139c475070d5a2398929efdca

Download Submit
memory/3136-14-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/3136-8-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/3800-12-0x0000000000450000-0x0000000000465000-memory.dmp

Filesize
84KB

Download
memory/3800-9-0x0000000000450000-0x0000000000465000-memory.dmp

Filesize
84KB

Download
memory/3800-18-0x0000000000450000-0x0000000000465000-memory.dmp

Filesize
84KB

Download
memory/3800-19-0x0000000000450000-0x0000000000465000-memory.dmp

Filesize
84KB

Download
memory/3800-20-0x0000000000450000-0x0000000000465000-memory.dmp

Filesize
84KB

Download
memory/4328-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4328-1-0x00000000004E0000-0x00000000005E0000-memory.dmp

Filesize
1024KB

Download
memory/4328-2-0x0000000000620000-0x0000000000633000-memory.dmp

Filesize
76KB

Download
memory/4328-17-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4328-16-0x0000000000620000-0x0000000000633000-memory.dmp

Filesize
76KB

Download
memory/4328-15-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads