tofsee | efe191b41e57d2fec261f7f1884ec74b27b93785f604b4fe20a2185352f3e0a3

General

Target

2024-12-31_8da83671c70dd3418c8a12e7ce843a1f_mafia.exe
Size

14.7MB
MD5

8da83671c70dd3418c8a12e7ce843a1f
SHA1

017fde4f6b60921dde0ccd17a3430d3216103b59
SHA256

efe191b41e57d2fec261f7f1884ec74b27b93785f604b4fe20a2185352f3e0a3
SHA512

168780b8fb2d37cf4beaeb7229bcdd872129c02e1cc32d485684528bab4f263c2e96da02d79710d41b0f72a572a50d4557b2a33dec023cdd1ce174e86ea00541
SSDEEP

3072:4LBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:1OMdRQr7OB0ypmMXnl8XEPM3noSWOC

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
720	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\ayyzxkdn\ImagePath = "C:\\Windows\\SysWOW64\\ayyzxkdn\\svbvkvgm.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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	2024-12-31_8da83671c70dd3418c8a12e7ce843a1f_mafia.exe

Deletes itself 1 IoCs

pid	Process
1156	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4296	svbvkvgm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4296 set thread context of 1156	4296	svbvkvgm.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
3512	sc.exe
4580	sc.exe
5088	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
2284	1364	WerFault.exe	82
3388	4296	WerFault.exe	93

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	2024-12-31_8da83671c70dd3418c8a12e7ce843a1f_mafia.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	svbvkvgm.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1364 wrote to memory of 2108	1364	2024-12-31_8da83671c70dd3418c8a12e7ce843a1f_mafia.exe	83
PID 1364 wrote to memory of 2108	1364	2024-12-31_8da83671c70dd3418c8a12e7ce843a1f_mafia.exe	83
PID 1364 wrote to memory of 2108	1364	2024-12-31_8da83671c70dd3418c8a12e7ce843a1f_mafia.exe	83
PID 1364 wrote to memory of 3640	1364	2024-12-31_8da83671c70dd3418c8a12e7ce843a1f_mafia.exe	85
PID 1364 wrote to memory of 3640	1364	2024-12-31_8da83671c70dd3418c8a12e7ce843a1f_mafia.exe	85
PID 1364 wrote to memory of 3640	1364	2024-12-31_8da83671c70dd3418c8a12e7ce843a1f_mafia.exe	85
PID 1364 wrote to memory of 3512	1364	2024-12-31_8da83671c70dd3418c8a12e7ce843a1f_mafia.exe	87
PID 1364 wrote to memory of 3512	1364	2024-12-31_8da83671c70dd3418c8a12e7ce843a1f_mafia.exe	87
PID 1364 wrote to memory of 3512	1364	2024-12-31_8da83671c70dd3418c8a12e7ce843a1f_mafia.exe	87
PID 1364 wrote to memory of 4580	1364	2024-12-31_8da83671c70dd3418c8a12e7ce843a1f_mafia.exe	89
PID 1364 wrote to memory of 4580	1364	2024-12-31_8da83671c70dd3418c8a12e7ce843a1f_mafia.exe	89
PID 1364 wrote to memory of 4580	1364	2024-12-31_8da83671c70dd3418c8a12e7ce843a1f_mafia.exe	89
PID 1364 wrote to memory of 5088	1364	2024-12-31_8da83671c70dd3418c8a12e7ce843a1f_mafia.exe	91
PID 1364 wrote to memory of 5088	1364	2024-12-31_8da83671c70dd3418c8a12e7ce843a1f_mafia.exe	91
PID 1364 wrote to memory of 5088	1364	2024-12-31_8da83671c70dd3418c8a12e7ce843a1f_mafia.exe	91
PID 1364 wrote to memory of 720	1364	2024-12-31_8da83671c70dd3418c8a12e7ce843a1f_mafia.exe	94
PID 1364 wrote to memory of 720	1364	2024-12-31_8da83671c70dd3418c8a12e7ce843a1f_mafia.exe	94
PID 1364 wrote to memory of 720	1364	2024-12-31_8da83671c70dd3418c8a12e7ce843a1f_mafia.exe	94
PID 4296 wrote to memory of 1156	4296	svbvkvgm.exe	100
PID 4296 wrote to memory of 1156	4296	svbvkvgm.exe	100
PID 4296 wrote to memory of 1156	4296	svbvkvgm.exe	100
PID 4296 wrote to memory of 1156	4296	svbvkvgm.exe	100
PID 4296 wrote to memory of 1156	4296	svbvkvgm.exe	100

C:\Users\Admin\AppData\Local\Temp\2024-12-31_8da83671c70dd3418c8a12e7ce843a1f_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-31_8da83671c70dd3418c8a12e7ce843a1f_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1364
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ayyzxkdn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2108
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\svbvkvgm.exe" C:\Windows\SysWOW64\ayyzxkdn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3640
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ayyzxkdn binPath= "C:\Windows\SysWOW64\ayyzxkdn\svbvkvgm.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-12-31_8da83671c70dd3418c8a12e7ce843a1f_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3512
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ayyzxkdn "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4580
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ayyzxkdn
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5088
- 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:720
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1364 -s 592
  2⤵
  - Program crash
  PID:2284

C:\Windows\SysWOW64\ayyzxkdn\svbvkvgm.exe
C:\Windows\SysWOW64\ayyzxkdn\svbvkvgm.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-12-31_8da83671c70dd3418c8a12e7ce843a1f_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4296
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1156
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4296 -s 508
  2⤵
  - Program crash
  PID:3388

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1364 -ip 1364
1⤵
PID:2748

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 4296 -ip 4296
1⤵
PID:4612

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\svbvkvgm.exe

Filesize
14.7MB

MD5
21a479e190819aa20a90d465596cf82f

SHA1
6824353830ee151559bac1f1058d96911f4f254b

SHA256
5d2a95643af77429dd4f12c9d29b9b73a717b8a1668c49c45620dc6a43b6dedb

SHA512
751978b110cd79395dc669224b8b6f3bf185eefe5aad3028ef590b1f036126f966b3eb9a303fc41b6bdb7d22efa9df3fd438233b9702907b4c22a64b22a87767

Download Submit
memory/1156-14-0x0000000000FA0000-0x0000000000FB5000-memory.dmp

Filesize
84KB

Download
memory/1156-17-0x0000000000FA0000-0x0000000000FB5000-memory.dmp

Filesize
84KB

Download
memory/1156-16-0x0000000000FA0000-0x0000000000FB5000-memory.dmp

Filesize
84KB

Download
memory/1364-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1364-8-0x00000000001D0000-0x00000000001E3000-memory.dmp

Filesize
76KB

Download
memory/1364-1-0x0000000000610000-0x0000000000710000-memory.dmp

Filesize
1024KB

Download
memory/1364-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1364-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1364-2-0x00000000001D0000-0x00000000001E3000-memory.dmp

Filesize
76KB

Download
memory/4296-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4296-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4296-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4296-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads