tofsee | 03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0

General

Target

03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe
Size

12.9MB
MD5

8556b989b136705da62e8181b8e1b066
SHA1

8ab93dd9d5bd43efb00c8d027f08ecd5d1adf96b
SHA256

03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0
SHA512

e45b2343243e9a73f6edbdd75ace557bd33b887adc29408378d606246227f6b4ed5d006b14b8a37c62a165bdccafa46271a86aa1cb138573066553dda5159cf7
SSDEEP

49152:ukHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHP:N

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Tofsee family
tofsee

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\kgaxnqed = "0"	svchost.exe

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

Processes:

netsh.exe

pid process

2956 netsh.exe

pid	process
2956	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\kgaxnqed\ImagePath = "C:\\Windows\\SysWOW64\\kgaxnqed\\qvfvjo.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2568 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

qvfvjo.exe

pid process

2720 qvfvjo.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

qvfvjo.exe

description pid process target process

PID 2720 set thread context of 2568 2720 qvfvjo.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

2836 sc.exe
2772 sc.exe
2684 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2568	svchost.exe

pid	process
2720	qvfvjo.exe

description	pid	process	target process
PID 2720 set thread context of 2568	2720	qvfvjo.exe	svchost.exe

pid	process
2836	sc.exe
2772	sc.exe
2684	sc.exe

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

Processes:

netsh.exe

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

Processes:

sc.exesc.exeqvfvjo.execmd.execmd.exenetsh.exesvchost.exe03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exesc.exe

description	ioc	process
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	qvfvjo.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exeqvfvjo.exe

description	pid	process	target process
PID 2084 wrote to memory of 2652	2084	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	cmd.exe
PID 2084 wrote to memory of 2652	2084	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	cmd.exe
PID 2084 wrote to memory of 2652	2084	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	cmd.exe
PID 2084 wrote to memory of 2652	2084	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	cmd.exe
PID 2084 wrote to memory of 2708	2084	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	cmd.exe
PID 2084 wrote to memory of 2708	2084	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	cmd.exe
PID 2084 wrote to memory of 2708	2084	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	cmd.exe
PID 2084 wrote to memory of 2708	2084	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	cmd.exe
PID 2084 wrote to memory of 2772	2084	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	sc.exe
PID 2084 wrote to memory of 2772	2084	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	sc.exe
PID 2084 wrote to memory of 2772	2084	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	sc.exe
PID 2084 wrote to memory of 2772	2084	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	sc.exe
PID 2084 wrote to memory of 2684	2084	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	sc.exe
PID 2084 wrote to memory of 2684	2084	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	sc.exe
PID 2084 wrote to memory of 2684	2084	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	sc.exe
PID 2084 wrote to memory of 2684	2084	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	sc.exe
PID 2084 wrote to memory of 2836	2084	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	sc.exe
PID 2084 wrote to memory of 2836	2084	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	sc.exe
PID 2084 wrote to memory of 2836	2084	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	sc.exe
PID 2084 wrote to memory of 2836	2084	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	sc.exe
PID 2084 wrote to memory of 2956	2084	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	netsh.exe
PID 2084 wrote to memory of 2956	2084	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	netsh.exe
PID 2084 wrote to memory of 2956	2084	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	netsh.exe
PID 2084 wrote to memory of 2956	2084	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	netsh.exe
PID 2720 wrote to memory of 2568	2720	qvfvjo.exe	svchost.exe
PID 2720 wrote to memory of 2568	2720	qvfvjo.exe	svchost.exe
PID 2720 wrote to memory of 2568	2720	qvfvjo.exe	svchost.exe
PID 2720 wrote to memory of 2568	2720	qvfvjo.exe	svchost.exe
PID 2720 wrote to memory of 2568	2720	qvfvjo.exe	svchost.exe
PID 2720 wrote to memory of 2568	2720	qvfvjo.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe
"C:\Users\Admin\AppData\Local\Temp\03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2084
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kgaxnqed\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2652
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\qvfvjo.exe" C:\Windows\SysWOW64\kgaxnqed\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2708
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create kgaxnqed binPath= "C:\Windows\SysWOW64\kgaxnqed\qvfvjo.exe /d\"C:\Users\Admin\AppData\Local\Temp\03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2772
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description kgaxnqed "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2684
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start kgaxnqed
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2836
- 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:2956

C:\Windows\SysWOW64\kgaxnqed\qvfvjo.exe
C:\Windows\SysWOW64\kgaxnqed\qvfvjo.exe /d"C:\Users\Admin\AppData\Local\Temp\03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2720
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - 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

2

T1562

Disable or Modify System Firewall

1

T1562.004

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

1

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\qvfvjo.exe

Filesize
10.1MB

MD5
86536232b588f73022223c28f6cfdb94

SHA1
40c7cd56fd3a8ae617df8a184ed0202c21c06f98

SHA256
6cf275c4417ee8c7f98f8b03774509285bb104c6ed2d20b5805515c678d7e0f4

SHA512
5400bb6f1001df2300ad5359f199f82569d4710f87a961ee205f7337f7d0e3e765852a9eb18a1bf7749c8ffba5d021a0f17d90ec6774d82da23f7e476107d55a

Download Submit
memory/2084-9-0x0000000000230000-0x0000000000243000-memory.dmp

Filesize
76KB

Download
memory/2084-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2084-2-0x0000000000230000-0x0000000000243000-memory.dmp

Filesize
76KB

Download
memory/2084-11-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2084-10-0x0000000000900000-0x0000000000A00000-memory.dmp

Filesize
1024KB

Download
memory/2084-1-0x0000000000900000-0x0000000000A00000-memory.dmp

Filesize
1024KB

Download
memory/2084-8-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/2568-15-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2568-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2568-12-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2568-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2568-19-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2720-18-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads