tofsee | ca525fe8bf95a32af296ac08e7a99b76bb7e06cb55e40d66ebff0228c9cb2186

General

Target

20240903ac20eaa882bf941cebe29670759c588emafia.exe
Size

11.6MB
MD5

ac20eaa882bf941cebe29670759c588e
SHA1

1811b68bbcdf114ed21fd6d50a4cafc1a15f11c1
SHA256

ca525fe8bf95a32af296ac08e7a99b76bb7e06cb55e40d66ebff0228c9cb2186
SHA512

defed9cd1f093a3b9d409446650b252fbbf36aed248358b256dc1c8150f92db7f2084d1618f06f5d6de0509daea443835c74a771b2d142705ac6919eadef325b
SSDEEP

6144:D+rWO2zeSPDjMXMH7Ll4aFpWVqIwUAP97GEwHrG2+e1x2:D+r1IeSXMXc7LlxWV4Ug97GZ+ej

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
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
2044	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\xyhehxks\ImagePath = "C:\\Windows\\SysWOW64\\xyhehxks\\gphgpbfw.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-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	20240903ac20eaa882bf941cebe29670759c588emafia.exe

Deletes itself 1 IoCs

pid	Process
2568	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4068	gphgpbfw.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4068 set thread context of 2568	4068	gphgpbfw.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
1696	sc.exe
636	sc.exe
3408	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

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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gphgpbfw.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	20240903ac20eaa882bf941cebe29670759c588emafia.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4948 wrote to memory of 3688	4948	20240903ac20eaa882bf941cebe29670759c588emafia.exe	86
PID 4948 wrote to memory of 3688	4948	20240903ac20eaa882bf941cebe29670759c588emafia.exe	86
PID 4948 wrote to memory of 3688	4948	20240903ac20eaa882bf941cebe29670759c588emafia.exe	86
PID 4948 wrote to memory of 1580	4948	20240903ac20eaa882bf941cebe29670759c588emafia.exe	88
PID 4948 wrote to memory of 1580	4948	20240903ac20eaa882bf941cebe29670759c588emafia.exe	88
PID 4948 wrote to memory of 1580	4948	20240903ac20eaa882bf941cebe29670759c588emafia.exe	88
PID 4948 wrote to memory of 1696	4948	20240903ac20eaa882bf941cebe29670759c588emafia.exe	90
PID 4948 wrote to memory of 1696	4948	20240903ac20eaa882bf941cebe29670759c588emafia.exe	90
PID 4948 wrote to memory of 1696	4948	20240903ac20eaa882bf941cebe29670759c588emafia.exe	90
PID 4948 wrote to memory of 636	4948	20240903ac20eaa882bf941cebe29670759c588emafia.exe	92
PID 4948 wrote to memory of 636	4948	20240903ac20eaa882bf941cebe29670759c588emafia.exe	92
PID 4948 wrote to memory of 636	4948	20240903ac20eaa882bf941cebe29670759c588emafia.exe	92
PID 4948 wrote to memory of 3408	4948	20240903ac20eaa882bf941cebe29670759c588emafia.exe	96
PID 4948 wrote to memory of 3408	4948	20240903ac20eaa882bf941cebe29670759c588emafia.exe	96
PID 4948 wrote to memory of 3408	4948	20240903ac20eaa882bf941cebe29670759c588emafia.exe	96
PID 4948 wrote to memory of 2044	4948	20240903ac20eaa882bf941cebe29670759c588emafia.exe	99
PID 4948 wrote to memory of 2044	4948	20240903ac20eaa882bf941cebe29670759c588emafia.exe	99
PID 4948 wrote to memory of 2044	4948	20240903ac20eaa882bf941cebe29670759c588emafia.exe	99
PID 4068 wrote to memory of 2568	4068	gphgpbfw.exe	101
PID 4068 wrote to memory of 2568	4068	gphgpbfw.exe	101
PID 4068 wrote to memory of 2568	4068	gphgpbfw.exe	101
PID 4068 wrote to memory of 2568	4068	gphgpbfw.exe	101
PID 4068 wrote to memory of 2568	4068	gphgpbfw.exe	101

C:\Users\Admin\AppData\Local\Temp\20240903ac20eaa882bf941cebe29670759c588emafia.exe
"C:\Users\Admin\AppData\Local\Temp\20240903ac20eaa882bf941cebe29670759c588emafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4948
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xyhehxks\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3688
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gphgpbfw.exe" C:\Windows\SysWOW64\xyhehxks\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1580
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create xyhehxks binPath= "C:\Windows\SysWOW64\xyhehxks\gphgpbfw.exe /d\"C:\Users\Admin\AppData\Local\Temp\20240903ac20eaa882bf941cebe29670759c588emafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1696
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description xyhehxks "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:636
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start xyhehxks
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3408
- 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:2044

C:\Windows\SysWOW64\xyhehxks\gphgpbfw.exe
C:\Windows\SysWOW64\xyhehxks\gphgpbfw.exe /d"C:\Users\Admin\AppData\Local\Temp\20240903ac20eaa882bf941cebe29670759c588emafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4068
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2568

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\gphgpbfw.exe

Filesize
14.3MB

MD5
5437c845f91da8244a55e9d1393a78c1

SHA1
40bbb7266ec225bf313c40b250c375f4725b2f2d

SHA256
d928fbc9fb8b0c8dd388c5584c31007dc2e6699214bf734150558eacafe603b8

SHA512
ed02f02ce96bff43dfb13d75d51a85b6edbc1f2ca5e5b22c086d782a4d24f9a6aeecd0f7876339bc9cf228430fda33928b7586e68a715700b291eab8e606396b

Download Submit
memory/2568-11-0x0000000000FC0000-0x0000000000FD5000-memory.dmp

Filesize
84KB

Download
memory/2568-13-0x0000000000FC0000-0x0000000000FD5000-memory.dmp

Filesize
84KB

Download
memory/2568-16-0x0000000000FC0000-0x0000000000FD5000-memory.dmp

Filesize
84KB

Download
memory/4068-9-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/4068-10-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/4068-15-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/4948-1-0x00000000006B0000-0x00000000007B0000-memory.dmp

Filesize
1024KB

Download
memory/4948-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4948-7-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4948-6-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads