tofsee | 139e64db57e15d0129b764d51604e08ca03cfca2ec62965f6f7dba5c43f3c62b

General

Target

2024-12-27_d55d1fc9e60b3b9cca5780f42e834ca4_mafia.exe
Size

10.6MB
MD5

d55d1fc9e60b3b9cca5780f42e834ca4
SHA1

2426924cb0e0e6097d9132075aed054bc991a81a
SHA256

139e64db57e15d0129b764d51604e08ca03cfca2ec62965f6f7dba5c43f3c62b
SHA512

7350626f10fb4c5898f2e32dbf35c886f132d717e4d60293a70117b4efffae9e33f2b77c461ec67dc4ea896d1ae309354b32fdbd45a17e65b996b2c9d12eaf44
SSDEEP

3072:/LBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:2OMdRQr7OB0ypmMXnl8XEPM3noSWOC

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
2316	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\vawqsyyj\ImagePath = "C:\\Windows\\SysWOW64\\vawqsyyj\\yhbgyxso.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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	2024-12-27_d55d1fc9e60b3b9cca5780f42e834ca4_mafia.exe

Deletes itself 1 IoCs

pid	Process
3568	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1660	yhbgyxso.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1660 set thread context of 3568	1660	yhbgyxso.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
3908	sc.exe
4876	sc.exe
2524	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
3572	4084	WerFault.exe	82
4928	1660	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	2024-12-27_d55d1fc9e60b3b9cca5780f42e834ca4_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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	yhbgyxso.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4084 wrote to memory of 3824	4084	2024-12-27_d55d1fc9e60b3b9cca5780f42e834ca4_mafia.exe	84
PID 4084 wrote to memory of 3824	4084	2024-12-27_d55d1fc9e60b3b9cca5780f42e834ca4_mafia.exe	84
PID 4084 wrote to memory of 3824	4084	2024-12-27_d55d1fc9e60b3b9cca5780f42e834ca4_mafia.exe	84
PID 4084 wrote to memory of 2484	4084	2024-12-27_d55d1fc9e60b3b9cca5780f42e834ca4_mafia.exe	86
PID 4084 wrote to memory of 2484	4084	2024-12-27_d55d1fc9e60b3b9cca5780f42e834ca4_mafia.exe	86
PID 4084 wrote to memory of 2484	4084	2024-12-27_d55d1fc9e60b3b9cca5780f42e834ca4_mafia.exe	86
PID 4084 wrote to memory of 4876	4084	2024-12-27_d55d1fc9e60b3b9cca5780f42e834ca4_mafia.exe	88
PID 4084 wrote to memory of 4876	4084	2024-12-27_d55d1fc9e60b3b9cca5780f42e834ca4_mafia.exe	88
PID 4084 wrote to memory of 4876	4084	2024-12-27_d55d1fc9e60b3b9cca5780f42e834ca4_mafia.exe	88
PID 4084 wrote to memory of 2524	4084	2024-12-27_d55d1fc9e60b3b9cca5780f42e834ca4_mafia.exe	90
PID 4084 wrote to memory of 2524	4084	2024-12-27_d55d1fc9e60b3b9cca5780f42e834ca4_mafia.exe	90
PID 4084 wrote to memory of 2524	4084	2024-12-27_d55d1fc9e60b3b9cca5780f42e834ca4_mafia.exe	90
PID 4084 wrote to memory of 3908	4084	2024-12-27_d55d1fc9e60b3b9cca5780f42e834ca4_mafia.exe	92
PID 4084 wrote to memory of 3908	4084	2024-12-27_d55d1fc9e60b3b9cca5780f42e834ca4_mafia.exe	92
PID 4084 wrote to memory of 3908	4084	2024-12-27_d55d1fc9e60b3b9cca5780f42e834ca4_mafia.exe	92
PID 4084 wrote to memory of 2316	4084	2024-12-27_d55d1fc9e60b3b9cca5780f42e834ca4_mafia.exe	95
PID 4084 wrote to memory of 2316	4084	2024-12-27_d55d1fc9e60b3b9cca5780f42e834ca4_mafia.exe	95
PID 4084 wrote to memory of 2316	4084	2024-12-27_d55d1fc9e60b3b9cca5780f42e834ca4_mafia.exe	95
PID 1660 wrote to memory of 3568	1660	yhbgyxso.exe	101
PID 1660 wrote to memory of 3568	1660	yhbgyxso.exe	101
PID 1660 wrote to memory of 3568	1660	yhbgyxso.exe	101
PID 1660 wrote to memory of 3568	1660	yhbgyxso.exe	101
PID 1660 wrote to memory of 3568	1660	yhbgyxso.exe	101

C:\Users\Admin\AppData\Local\Temp\2024-12-27_d55d1fc9e60b3b9cca5780f42e834ca4_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-27_d55d1fc9e60b3b9cca5780f42e834ca4_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4084
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vawqsyyj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3824
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\yhbgyxso.exe" C:\Windows\SysWOW64\vawqsyyj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2484
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create vawqsyyj binPath= "C:\Windows\SysWOW64\vawqsyyj\yhbgyxso.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-12-27_d55d1fc9e60b3b9cca5780f42e834ca4_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4876
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description vawqsyyj "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2524
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start vawqsyyj
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3908
- 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:2316
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4084 -s 888
  2⤵
  - Program crash
  PID:3572

C:\Windows\SysWOW64\vawqsyyj\yhbgyxso.exe
C:\Windows\SysWOW64\vawqsyyj\yhbgyxso.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-12-27_d55d1fc9e60b3b9cca5780f42e834ca4_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1660
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3568
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1660 -s 532
  2⤵
  - Program crash
  PID:4928

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4084 -ip 4084
1⤵
PID:2188

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1660 -ip 1660
1⤵
PID:3092

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\yhbgyxso.exe

Filesize
10.8MB

MD5
d4320d864551d1943f168cafb0172400

SHA1
a7281a7cfb6f962954925976db5c78fd3a1f2783

SHA256
d535214ad55e93ddf0712cb20ec465f813054771e4b271334e56afd73f226352

SHA512
b7b4d07f2170ec1a8b043fd44ba358a154ddbc4ec6b2ab632d9b72c0fc992d56f43c3f7f80e843b3f2b4947030cd055ed151cb1ec51c7643fe366f7b3ef8ca5f

Download Submit
memory/1660-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1660-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1660-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1660-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3568-14-0x0000000000D20000-0x0000000000D35000-memory.dmp

Filesize
84KB

Download
memory/3568-16-0x0000000000D20000-0x0000000000D35000-memory.dmp

Filesize
84KB

Download
memory/3568-17-0x0000000000D20000-0x0000000000D35000-memory.dmp

Filesize
84KB

Download
memory/4084-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4084-2-0x0000000000520000-0x0000000000533000-memory.dmp

Filesize
76KB

Download
memory/4084-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4084-8-0x0000000000520000-0x0000000000533000-memory.dmp

Filesize
76KB

Download
memory/4084-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4084-1-0x0000000000590000-0x0000000000690000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads