tofsee | 318a029855a3cb946c8a3ca63c1c932a0e3885b2bec4a87de261860ddd165db4

General

Target

2024-12-31_f899d269684cca932eec89a41dff0fc4_mafia.exe
Size

12.6MB
MD5

f899d269684cca932eec89a41dff0fc4
SHA1

350be1aceab663b364488aca77608767dd863fa1
SHA256

318a029855a3cb946c8a3ca63c1c932a0e3885b2bec4a87de261860ddd165db4
SHA512

12c09ffa6e58ce985fb69f9983b0c656ee4c90376f5c5b96ff8f91840f95b35ed2f18e681083aabe7d0758442f3ecf27bcfb8f8a5d87bfc48aabb9e735eb489d
SSDEEP

3072:uLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:3OMdRQr7OB0ypmMXnl8XEPM3noSWOC

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
5112	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\yobtwjsp\ImagePath = "C:\\Windows\\SysWOW64\\yobtwjsp\\njbbynma.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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	2024-12-31_f899d269684cca932eec89a41dff0fc4_mafia.exe

Deletes itself 1 IoCs

pid	Process
664	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2300	njbbynma.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2300 set thread context of 664	2300	njbbynma.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
3296	sc.exe
2020	sc.exe
1648	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
4296	3424	WerFault.exe	82
2504	2300	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-12-31_f899d269684cca932eec89a41dff0fc4_mafia.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	njbbynma.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3424 wrote to memory of 4844	3424	2024-12-31_f899d269684cca932eec89a41dff0fc4_mafia.exe	84
PID 3424 wrote to memory of 4844	3424	2024-12-31_f899d269684cca932eec89a41dff0fc4_mafia.exe	84
PID 3424 wrote to memory of 4844	3424	2024-12-31_f899d269684cca932eec89a41dff0fc4_mafia.exe	84
PID 3424 wrote to memory of 2848	3424	2024-12-31_f899d269684cca932eec89a41dff0fc4_mafia.exe	86
PID 3424 wrote to memory of 2848	3424	2024-12-31_f899d269684cca932eec89a41dff0fc4_mafia.exe	86
PID 3424 wrote to memory of 2848	3424	2024-12-31_f899d269684cca932eec89a41dff0fc4_mafia.exe	86
PID 3424 wrote to memory of 3296	3424	2024-12-31_f899d269684cca932eec89a41dff0fc4_mafia.exe	88
PID 3424 wrote to memory of 3296	3424	2024-12-31_f899d269684cca932eec89a41dff0fc4_mafia.exe	88
PID 3424 wrote to memory of 3296	3424	2024-12-31_f899d269684cca932eec89a41dff0fc4_mafia.exe	88
PID 3424 wrote to memory of 2020	3424	2024-12-31_f899d269684cca932eec89a41dff0fc4_mafia.exe	90
PID 3424 wrote to memory of 2020	3424	2024-12-31_f899d269684cca932eec89a41dff0fc4_mafia.exe	90
PID 3424 wrote to memory of 2020	3424	2024-12-31_f899d269684cca932eec89a41dff0fc4_mafia.exe	90
PID 3424 wrote to memory of 1648	3424	2024-12-31_f899d269684cca932eec89a41dff0fc4_mafia.exe	92
PID 3424 wrote to memory of 1648	3424	2024-12-31_f899d269684cca932eec89a41dff0fc4_mafia.exe	92
PID 3424 wrote to memory of 1648	3424	2024-12-31_f899d269684cca932eec89a41dff0fc4_mafia.exe	92
PID 3424 wrote to memory of 5112	3424	2024-12-31_f899d269684cca932eec89a41dff0fc4_mafia.exe	95
PID 3424 wrote to memory of 5112	3424	2024-12-31_f899d269684cca932eec89a41dff0fc4_mafia.exe	95
PID 3424 wrote to memory of 5112	3424	2024-12-31_f899d269684cca932eec89a41dff0fc4_mafia.exe	95
PID 2300 wrote to memory of 664	2300	njbbynma.exe	101
PID 2300 wrote to memory of 664	2300	njbbynma.exe	101
PID 2300 wrote to memory of 664	2300	njbbynma.exe	101
PID 2300 wrote to memory of 664	2300	njbbynma.exe	101
PID 2300 wrote to memory of 664	2300	njbbynma.exe	101

C:\Users\Admin\AppData\Local\Temp\2024-12-31_f899d269684cca932eec89a41dff0fc4_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-31_f899d269684cca932eec89a41dff0fc4_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3424
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yobtwjsp\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4844
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\njbbynma.exe" C:\Windows\SysWOW64\yobtwjsp\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2848
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create yobtwjsp binPath= "C:\Windows\SysWOW64\yobtwjsp\njbbynma.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-12-31_f899d269684cca932eec89a41dff0fc4_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3296
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description yobtwjsp "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2020
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start yobtwjsp
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1648
- 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:5112
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3424 -s 1132
  2⤵
  - Program crash
  PID:4296

C:\Windows\SysWOW64\yobtwjsp\njbbynma.exe
C:\Windows\SysWOW64\yobtwjsp\njbbynma.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-12-31_f899d269684cca932eec89a41dff0fc4_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2300
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:664
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2300 -s 508
  2⤵
  - Program crash
  PID:2504

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3424 -ip 3424
1⤵
PID:3880

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2300 -ip 2300
1⤵
PID:3440

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\njbbynma.exe

Filesize
14.5MB

MD5
fb5e347a7f72b8e2387d6bed2d513aa8

SHA1
a05f978100a23685599ec91d29da0cdedb9250bf

SHA256
30a6c437aa251a5ab2437b6c3b7c18c34540958c67cf8ac86a186afda3f606f0

SHA512
ab11c42049f2c07f155273133f34295a37b2c1f01866d82696f81d4027378aa727e6f8251fe93d61652b94609a64b540083cd28a767e2563d935701a609b1c41

Download Submit
memory/664-14-0x0000000000900000-0x0000000000915000-memory.dmp

Filesize
84KB

Download
memory/664-17-0x0000000000900000-0x0000000000915000-memory.dmp

Filesize
84KB

Download
memory/664-16-0x0000000000900000-0x0000000000915000-memory.dmp

Filesize
84KB

Download
memory/2300-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2300-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2300-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2300-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3424-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3424-8-0x00000000001D0000-0x00000000001E3000-memory.dmp

Filesize
76KB

Download
memory/3424-1-0x00000000004F0000-0x00000000005F0000-memory.dmp

Filesize
1024KB

Download
memory/3424-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3424-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3424-2-0x00000000001D0000-0x00000000001E3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads