tofsee | 4b473923cc919a95d186f942b64234135bdd394d807125b5bbe156880468cd1d

General

Target

2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe
Size

12.8MB
MD5

c3e93ca2e3da9a3312d9135707fe915c
SHA1

35f259f2b8460d68f3620c13cdb94fbb105b7897
SHA256

4b473923cc919a95d186f942b64234135bdd394d807125b5bbe156880468cd1d
SHA512

e4eafa3e69784456cb0d0fde4edbee2a933d05af833701e0c0e2f22e872396ae7306f2822996be883d187c0ca0017642596a888d1e1f42ca332feaee40791947
SSDEEP

24576:PEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZT:Mfotx

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
2884	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\nbchcanh\ImagePath = "C:\\Windows\\SysWOW64\\nbchcanh\\pjjaluln.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-1-5-21-70482961-775596374-3727440602-1000\Control Panel\International\Geo\Nation	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe

Deletes itself 1 IoCs

pid	Process
2188	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1516	pjjaluln.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1516 set thread context of 2188	1516	pjjaluln.exe	105

Launches sc.exe 3 IoCs

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

pid	Process
436	sc.exe
1512	sc.exe
4436	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	2532	WerFault.exe	82
3992	1516	WerFault.exe	99

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	sc.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	pjjaluln.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2532 wrote to memory of 2132	2532	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	89
PID 2532 wrote to memory of 2132	2532	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	89
PID 2532 wrote to memory of 2132	2532	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	89
PID 2532 wrote to memory of 5028	2532	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	91
PID 2532 wrote to memory of 5028	2532	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	91
PID 2532 wrote to memory of 5028	2532	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	91
PID 2532 wrote to memory of 4436	2532	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	93
PID 2532 wrote to memory of 4436	2532	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	93
PID 2532 wrote to memory of 4436	2532	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	93
PID 2532 wrote to memory of 436	2532	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	95
PID 2532 wrote to memory of 436	2532	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	95
PID 2532 wrote to memory of 436	2532	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	95
PID 2532 wrote to memory of 1512	2532	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	97
PID 2532 wrote to memory of 1512	2532	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	97
PID 2532 wrote to memory of 1512	2532	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	97
PID 2532 wrote to memory of 2884	2532	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	100
PID 2532 wrote to memory of 2884	2532	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	100
PID 2532 wrote to memory of 2884	2532	2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe	100
PID 1516 wrote to memory of 2188	1516	pjjaluln.exe	105
PID 1516 wrote to memory of 2188	1516	pjjaluln.exe	105
PID 1516 wrote to memory of 2188	1516	pjjaluln.exe	105
PID 1516 wrote to memory of 2188	1516	pjjaluln.exe	105
PID 1516 wrote to memory of 2188	1516	pjjaluln.exe	105

C:\Users\Admin\AppData\Local\Temp\2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2532
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nbchcanh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2132
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pjjaluln.exe" C:\Windows\SysWOW64\nbchcanh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5028
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nbchcanh binPath= "C:\Windows\SysWOW64\nbchcanh\pjjaluln.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4436
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nbchcanh "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:436
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nbchcanh
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1512
- 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:2884
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2532 -s 1220
  2⤵
  - Program crash
  PID:2976

C:\Windows\SysWOW64\nbchcanh\pjjaluln.exe
C:\Windows\SysWOW64\nbchcanh\pjjaluln.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-03_c3e93ca2e3da9a3312d9135707fe915c_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1516
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2188
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1516 -s 508
  2⤵
  - Program crash
  PID:3992

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2532 -ip 2532
1⤵
PID:3196

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1516 -ip 1516
1⤵
PID:4664

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\pjjaluln.exe

Filesize
11.8MB

MD5
99fa87ee4450412b098ed673e213211a

SHA1
0a493428e93003d518afd4166c60cff6f01ad6db

SHA256
0841cd915b69603a848a5eb8297283a58b9529c53bec3605d432a26787da5970

SHA512
3315d46622b936479e208f4a143d99344ef359dd95256736445c5adf67157b517590978d6d1de8cf95920cd06c76d82b684adcb3d01b2f6ddbad8a32c9b84b93

Download Submit
memory/1516-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1516-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1516-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1516-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2188-14-0x00000000010C0000-0x00000000010D5000-memory.dmp

Filesize
84KB

Download
memory/2188-16-0x00000000010C0000-0x00000000010D5000-memory.dmp

Filesize
84KB

Download
memory/2188-17-0x00000000010C0000-0x00000000010D5000-memory.dmp

Filesize
84KB

Download
memory/2532-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2532-2-0x0000000000880000-0x0000000000893000-memory.dmp

Filesize
76KB

Download
memory/2532-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2532-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2532-8-0x0000000000880000-0x0000000000893000-memory.dmp

Filesize
76KB

Download
memory/2532-1-0x0000000000680000-0x0000000000780000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads