tofsee | ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e

General

Target

ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe
Size

291KB
MD5

1a6ce36ee783de5148f2c0817ac6dabe
SHA1

fa957807a9fe6a0de8f959b3c67a3365eac569a7
SHA256

ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e
SHA512

6fd759a69ce43798a3b43efe578f36923f1e67a8f8969d6f593fd29d442c76d72632a6b8679b679deb6e3f62aa0577eeb13e3938182918adbf247ce2c2822305
SSDEEP

6144:HbDiEbQtM055szCZb55JgXrSXuZet0yob7PANco+hOgw:UM450a55G7SXuZet0yob7Ro+Fw

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\vesgfgmn = "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

2828 netsh.exe

pid	process
2828	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\vesgfgmn\ImagePath = "C:\\Windows\\SysWOW64\\vesgfgmn\\fhbqmiev.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2864 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

fhbqmiev.exe

pid process

2996 fhbqmiev.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

fhbqmiev.exe

description pid process target process

PID 2996 set thread context of 2864 2996 fhbqmiev.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

2244 sc.exe
2760 sc.exe
2892 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2864	svchost.exe

pid	process
2996	fhbqmiev.exe

description	pid	process	target process
PID 2996 set thread context of 2864	2996	fhbqmiev.exe	svchost.exe

pid	process
2244	sc.exe
2760	sc.exe
2892	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:

cmd.exesc.exenetsh.exefhbqmiev.exesvchost.exeac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.execmd.exesc.exesc.exe

description	ioc	process
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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fhbqmiev.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.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 30 IoCs

Processes:

ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exefhbqmiev.exe

description	pid	process	target process
PID 1964 wrote to memory of 2904	1964	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	cmd.exe
PID 1964 wrote to memory of 2904	1964	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	cmd.exe
PID 1964 wrote to memory of 2904	1964	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	cmd.exe
PID 1964 wrote to memory of 2904	1964	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	cmd.exe
PID 1964 wrote to memory of 2544	1964	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	cmd.exe
PID 1964 wrote to memory of 2544	1964	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	cmd.exe
PID 1964 wrote to memory of 2544	1964	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	cmd.exe
PID 1964 wrote to memory of 2544	1964	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	cmd.exe
PID 1964 wrote to memory of 2244	1964	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	sc.exe
PID 1964 wrote to memory of 2244	1964	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	sc.exe
PID 1964 wrote to memory of 2244	1964	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	sc.exe
PID 1964 wrote to memory of 2244	1964	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	sc.exe
PID 1964 wrote to memory of 2760	1964	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	sc.exe
PID 1964 wrote to memory of 2760	1964	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	sc.exe
PID 1964 wrote to memory of 2760	1964	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	sc.exe
PID 1964 wrote to memory of 2760	1964	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	sc.exe
PID 1964 wrote to memory of 2892	1964	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	sc.exe
PID 1964 wrote to memory of 2892	1964	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	sc.exe
PID 1964 wrote to memory of 2892	1964	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	sc.exe
PID 1964 wrote to memory of 2892	1964	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	sc.exe
PID 1964 wrote to memory of 2828	1964	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	netsh.exe
PID 1964 wrote to memory of 2828	1964	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	netsh.exe
PID 1964 wrote to memory of 2828	1964	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	netsh.exe
PID 1964 wrote to memory of 2828	1964	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	netsh.exe
PID 2996 wrote to memory of 2864	2996	fhbqmiev.exe	svchost.exe
PID 2996 wrote to memory of 2864	2996	fhbqmiev.exe	svchost.exe
PID 2996 wrote to memory of 2864	2996	fhbqmiev.exe	svchost.exe
PID 2996 wrote to memory of 2864	2996	fhbqmiev.exe	svchost.exe
PID 2996 wrote to memory of 2864	2996	fhbqmiev.exe	svchost.exe
PID 2996 wrote to memory of 2864	2996	fhbqmiev.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe
"C:\Users\Admin\AppData\Local\Temp\ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1964
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vesgfgmn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2904
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fhbqmiev.exe" C:\Windows\SysWOW64\vesgfgmn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2544
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create vesgfgmn binPath= "C:\Windows\SysWOW64\vesgfgmn\fhbqmiev.exe /d\"C:\Users\Admin\AppData\Local\Temp\ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2244
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description vesgfgmn "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2760
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start vesgfgmn
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2892
- 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:2828

C:\Windows\SysWOW64\vesgfgmn\fhbqmiev.exe
C:\Windows\SysWOW64\vesgfgmn\fhbqmiev.exe /d"C:\Users\Admin\AppData\Local\Temp\ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2996
- 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:2864

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\fhbqmiev.exe

Filesize
12.5MB

MD5
5501de2dec24a6e186b31ddc6c60cf87

SHA1
2b1a5adc3980ceee33b5e235d5a59fffc4210b84

SHA256
f9b786602af565576379961e7e27c62997427687722cdd9aa6b68a9cbc44c8fa

SHA512
7c1646a02f168e918b2904708c606697bb71dab83a7660c096a1a88fa660958768bfeec343f83c4816b521eb8233ed8cf8328f4ddcdc401708634c4ca291f262

Download Submit
memory/1964-1-0x00000000002B0000-0x00000000003B0000-memory.dmp

Filesize
1024KB

Download
memory/1964-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1964-4-0x0000000000400000-0x0000000002B41000-memory.dmp

Filesize
39.3MB

Download
memory/1964-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1964-8-0x0000000000400000-0x0000000002B41000-memory.dmp

Filesize
39.3MB

Download
memory/2864-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2864-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2864-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2864-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2864-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2996-17-0x0000000000400000-0x0000000002B41000-memory.dmp

Filesize
39.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads