tofsee | a21cf982259a4e11dae815314ca1f22ab6bf0b8741da75484483708a7a5653e1

General

Target

00423b5dc446d975260c85ace9a92f27398430fd56bbb3d42e190d281de8d954.exe
Size

11.6MB
MD5

f97ac5a687cc94db960df62fb910a74a
SHA1

24b5c7775506327081ea3ed0093c62d938dd50e4
SHA256

00423b5dc446d975260c85ace9a92f27398430fd56bbb3d42e190d281de8d954
SHA512

ab81fd40d42ad8dd102b48906d5fba078360001cb300743b8e90849bc38d22f40302b6e26ee5d45f0b6bf1bd082e0293adee78ed3e21668c3c55b014d9746c0b
SSDEEP

196608:QPHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHn:Q

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

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
1392	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\xbndixxq\ImagePath = "C:\\Windows\\SysWOW64\\xbndixxq\\rhcoiuyq.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-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	00423b5dc446d975260c85ace9a92f27398430fd56bbb3d42e190d281de8d954.exe

Deletes itself 1 IoCs

pid	Process
1244	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3008	rhcoiuyq.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3008 set thread context of 1244	3008	rhcoiuyq.exe	104

Launches sc.exe 3 IoCs

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

pid	Process
2332	sc.exe
2868	sc.exe
4488	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
3240	4828	WerFault.exe	84
3176	3008	WerFault.exe	98

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	rhcoiuyq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	00423b5dc446d975260c85ace9a92f27398430fd56bbb3d42e190d281de8d954.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 4828 wrote to memory of 2524	4828	00423b5dc446d975260c85ace9a92f27398430fd56bbb3d42e190d281de8d954.exe	88
PID 4828 wrote to memory of 2524	4828	00423b5dc446d975260c85ace9a92f27398430fd56bbb3d42e190d281de8d954.exe	88
PID 4828 wrote to memory of 2524	4828	00423b5dc446d975260c85ace9a92f27398430fd56bbb3d42e190d281de8d954.exe	88
PID 4828 wrote to memory of 1228	4828	00423b5dc446d975260c85ace9a92f27398430fd56bbb3d42e190d281de8d954.exe	90
PID 4828 wrote to memory of 1228	4828	00423b5dc446d975260c85ace9a92f27398430fd56bbb3d42e190d281de8d954.exe	90
PID 4828 wrote to memory of 1228	4828	00423b5dc446d975260c85ace9a92f27398430fd56bbb3d42e190d281de8d954.exe	90
PID 4828 wrote to memory of 2332	4828	00423b5dc446d975260c85ace9a92f27398430fd56bbb3d42e190d281de8d954.exe	92
PID 4828 wrote to memory of 2332	4828	00423b5dc446d975260c85ace9a92f27398430fd56bbb3d42e190d281de8d954.exe	92
PID 4828 wrote to memory of 2332	4828	00423b5dc446d975260c85ace9a92f27398430fd56bbb3d42e190d281de8d954.exe	92
PID 4828 wrote to memory of 2868	4828	00423b5dc446d975260c85ace9a92f27398430fd56bbb3d42e190d281de8d954.exe	94
PID 4828 wrote to memory of 2868	4828	00423b5dc446d975260c85ace9a92f27398430fd56bbb3d42e190d281de8d954.exe	94
PID 4828 wrote to memory of 2868	4828	00423b5dc446d975260c85ace9a92f27398430fd56bbb3d42e190d281de8d954.exe	94
PID 4828 wrote to memory of 4488	4828	00423b5dc446d975260c85ace9a92f27398430fd56bbb3d42e190d281de8d954.exe	96
PID 4828 wrote to memory of 4488	4828	00423b5dc446d975260c85ace9a92f27398430fd56bbb3d42e190d281de8d954.exe	96
PID 4828 wrote to memory of 4488	4828	00423b5dc446d975260c85ace9a92f27398430fd56bbb3d42e190d281de8d954.exe	96
PID 4828 wrote to memory of 1392	4828	00423b5dc446d975260c85ace9a92f27398430fd56bbb3d42e190d281de8d954.exe	99
PID 4828 wrote to memory of 1392	4828	00423b5dc446d975260c85ace9a92f27398430fd56bbb3d42e190d281de8d954.exe	99
PID 4828 wrote to memory of 1392	4828	00423b5dc446d975260c85ace9a92f27398430fd56bbb3d42e190d281de8d954.exe	99
PID 3008 wrote to memory of 1244	3008	rhcoiuyq.exe	104
PID 3008 wrote to memory of 1244	3008	rhcoiuyq.exe	104
PID 3008 wrote to memory of 1244	3008	rhcoiuyq.exe	104
PID 3008 wrote to memory of 1244	3008	rhcoiuyq.exe	104
PID 3008 wrote to memory of 1244	3008	rhcoiuyq.exe	104

C:\Users\Admin\AppData\Local\Temp\00423b5dc446d975260c85ace9a92f27398430fd56bbb3d42e190d281de8d954.exe
"C:\Users\Admin\AppData\Local\Temp\00423b5dc446d975260c85ace9a92f27398430fd56bbb3d42e190d281de8d954.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4828
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xbndixxq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2524
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rhcoiuyq.exe" C:\Windows\SysWOW64\xbndixxq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1228
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create xbndixxq binPath= "C:\Windows\SysWOW64\xbndixxq\rhcoiuyq.exe /d\"C:\Users\Admin\AppData\Local\Temp\00423b5dc446d975260c85ace9a92f27398430fd56bbb3d42e190d281de8d954.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2332
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description xbndixxq "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2868
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start xbndixxq
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4488
- 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:1392
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4828 -s 652
  2⤵
  - Program crash
  PID:3240

C:\Windows\SysWOW64\xbndixxq\rhcoiuyq.exe
C:\Windows\SysWOW64\xbndixxq\rhcoiuyq.exe /d"C:\Users\Admin\AppData\Local\Temp\00423b5dc446d975260c85ace9a92f27398430fd56bbb3d42e190d281de8d954.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3008
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1244
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3008 -s 520
  2⤵
  - Program crash
  PID:3176

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4828 -ip 4828
1⤵
PID:1416

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 3008 -ip 3008
1⤵
PID:1016

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\rhcoiuyq.exe

Filesize
13.5MB

MD5
9d3b6a762bff6eb5688256ec70bbdbf7

SHA1
81faba5a17be2c49ddf5b110834bc3f2217f80c6

SHA256
34714047a1a90cbe15f9d5fb1ef626e1f5aa665d896e4b11a6e8da2566157188

SHA512
1497b147bb29b8bdc851f96a3e68e1b268e75835c1cbd8344868c3346efe54494fd5fe0dfe4c12ecba55233a0c6ea35f8dd3fbfa70b3ccfdc79c27e05e69b4f8

Download Submit
memory/1244-14-0x0000000000920000-0x0000000000935000-memory.dmp

Filesize
84KB

Download
memory/1244-12-0x0000000000920000-0x0000000000935000-memory.dmp

Filesize
84KB

Download
memory/1244-17-0x0000000000920000-0x0000000000935000-memory.dmp

Filesize
84KB

Download
memory/3008-11-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/3008-15-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/3008-16-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/4828-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4828-2-0x00000000001E0000-0x00000000001F3000-memory.dmp

Filesize
76KB

Download
memory/4828-8-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/4828-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4828-9-0x00000000001E0000-0x00000000001F3000-memory.dmp

Filesize
76KB

Download
memory/4828-1-0x0000000000990000-0x0000000000A90000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads