tofsee | c8b505762941917003a601f5528107f2f8430f28ba872d46402ae0e2072f73d0

General

Target

c8b505762941917003a601f5528107f2f8430f28ba872d46402ae0e2072f73d0.exe
Size

12.7MB
MD5

e2151306920f0b6337def574ee7008d6
SHA1

8679ca5f98cfc2b88fc988b79c5bf9a36c7d3775
SHA256

c8b505762941917003a601f5528107f2f8430f28ba872d46402ae0e2072f73d0
SHA512

97fc4eb0636c5917c5aadb433a90a89412a86ed731782347d6c7f6dc19ba8090972c6fa2a7dde6a05d10d1e35f5c637cb3a961f823592ab47f65daaab491bca1
SSDEEP

49152:TP1IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIK:c

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\qhjgfbnf = "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

2708 netsh.exe

pid	process
2708	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\qhjgfbnf\ImagePath = "C:\\Windows\\SysWOW64\\qhjgfbnf\\atoaete.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2804 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

atoaete.exe

pid process

2760 atoaete.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

atoaete.exe

description pid process target process

PID 2760 set thread context of 2804 2760 atoaete.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

2320 sc.exe
2752 sc.exe
348 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2804	svchost.exe

pid	process
2760	atoaete.exe

description	pid	process	target process
PID 2760 set thread context of 2804	2760	atoaete.exe	svchost.exe

pid	process
2320	sc.exe
2752	sc.exe
348	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:

atoaete.exesc.exesc.exesc.exenetsh.exesvchost.exec8b505762941917003a601f5528107f2f8430f28ba872d46402ae0e2072f73d0.execmd.execmd.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	atoaete.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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c8b505762941917003a601f5528107f2f8430f28ba872d46402ae0e2072f73d0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

c8b505762941917003a601f5528107f2f8430f28ba872d46402ae0e2072f73d0.exeatoaete.exe

description	pid	process	target process
PID 2088 wrote to memory of 1340	2088	c8b505762941917003a601f5528107f2f8430f28ba872d46402ae0e2072f73d0.exe	cmd.exe
PID 2088 wrote to memory of 1340	2088	c8b505762941917003a601f5528107f2f8430f28ba872d46402ae0e2072f73d0.exe	cmd.exe
PID 2088 wrote to memory of 1340	2088	c8b505762941917003a601f5528107f2f8430f28ba872d46402ae0e2072f73d0.exe	cmd.exe
PID 2088 wrote to memory of 1340	2088	c8b505762941917003a601f5528107f2f8430f28ba872d46402ae0e2072f73d0.exe	cmd.exe
PID 2088 wrote to memory of 2924	2088	c8b505762941917003a601f5528107f2f8430f28ba872d46402ae0e2072f73d0.exe	cmd.exe
PID 2088 wrote to memory of 2924	2088	c8b505762941917003a601f5528107f2f8430f28ba872d46402ae0e2072f73d0.exe	cmd.exe
PID 2088 wrote to memory of 2924	2088	c8b505762941917003a601f5528107f2f8430f28ba872d46402ae0e2072f73d0.exe	cmd.exe
PID 2088 wrote to memory of 2924	2088	c8b505762941917003a601f5528107f2f8430f28ba872d46402ae0e2072f73d0.exe	cmd.exe
PID 2088 wrote to memory of 2320	2088	c8b505762941917003a601f5528107f2f8430f28ba872d46402ae0e2072f73d0.exe	sc.exe
PID 2088 wrote to memory of 2320	2088	c8b505762941917003a601f5528107f2f8430f28ba872d46402ae0e2072f73d0.exe	sc.exe
PID 2088 wrote to memory of 2320	2088	c8b505762941917003a601f5528107f2f8430f28ba872d46402ae0e2072f73d0.exe	sc.exe
PID 2088 wrote to memory of 2320	2088	c8b505762941917003a601f5528107f2f8430f28ba872d46402ae0e2072f73d0.exe	sc.exe
PID 2088 wrote to memory of 2752	2088	c8b505762941917003a601f5528107f2f8430f28ba872d46402ae0e2072f73d0.exe	sc.exe
PID 2088 wrote to memory of 2752	2088	c8b505762941917003a601f5528107f2f8430f28ba872d46402ae0e2072f73d0.exe	sc.exe
PID 2088 wrote to memory of 2752	2088	c8b505762941917003a601f5528107f2f8430f28ba872d46402ae0e2072f73d0.exe	sc.exe
PID 2088 wrote to memory of 2752	2088	c8b505762941917003a601f5528107f2f8430f28ba872d46402ae0e2072f73d0.exe	sc.exe
PID 2088 wrote to memory of 348	2088	c8b505762941917003a601f5528107f2f8430f28ba872d46402ae0e2072f73d0.exe	sc.exe
PID 2088 wrote to memory of 348	2088	c8b505762941917003a601f5528107f2f8430f28ba872d46402ae0e2072f73d0.exe	sc.exe
PID 2088 wrote to memory of 348	2088	c8b505762941917003a601f5528107f2f8430f28ba872d46402ae0e2072f73d0.exe	sc.exe
PID 2088 wrote to memory of 348	2088	c8b505762941917003a601f5528107f2f8430f28ba872d46402ae0e2072f73d0.exe	sc.exe
PID 2088 wrote to memory of 2708	2088	c8b505762941917003a601f5528107f2f8430f28ba872d46402ae0e2072f73d0.exe	netsh.exe
PID 2088 wrote to memory of 2708	2088	c8b505762941917003a601f5528107f2f8430f28ba872d46402ae0e2072f73d0.exe	netsh.exe
PID 2088 wrote to memory of 2708	2088	c8b505762941917003a601f5528107f2f8430f28ba872d46402ae0e2072f73d0.exe	netsh.exe
PID 2088 wrote to memory of 2708	2088	c8b505762941917003a601f5528107f2f8430f28ba872d46402ae0e2072f73d0.exe	netsh.exe
PID 2760 wrote to memory of 2804	2760	atoaete.exe	svchost.exe
PID 2760 wrote to memory of 2804	2760	atoaete.exe	svchost.exe
PID 2760 wrote to memory of 2804	2760	atoaete.exe	svchost.exe
PID 2760 wrote to memory of 2804	2760	atoaete.exe	svchost.exe
PID 2760 wrote to memory of 2804	2760	atoaete.exe	svchost.exe
PID 2760 wrote to memory of 2804	2760	atoaete.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\c8b505762941917003a601f5528107f2f8430f28ba872d46402ae0e2072f73d0.exe
"C:\Users\Admin\AppData\Local\Temp\c8b505762941917003a601f5528107f2f8430f28ba872d46402ae0e2072f73d0.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2088
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qhjgfbnf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1340
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\atoaete.exe" C:\Windows\SysWOW64\qhjgfbnf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2924
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create qhjgfbnf binPath= "C:\Windows\SysWOW64\qhjgfbnf\atoaete.exe /d\"C:\Users\Admin\AppData\Local\Temp\c8b505762941917003a601f5528107f2f8430f28ba872d46402ae0e2072f73d0.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2320
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description qhjgfbnf "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2752
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start qhjgfbnf
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:348
- 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:2708

C:\Windows\SysWOW64\qhjgfbnf\atoaete.exe
C:\Windows\SysWOW64\qhjgfbnf\atoaete.exe /d"C:\Users\Admin\AppData\Local\Temp\c8b505762941917003a601f5528107f2f8430f28ba872d46402ae0e2072f73d0.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2760
- 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:2804

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\atoaete.exe

Filesize
12.7MB

MD5
bfa5470823ce44a57de177c42afaf9c3

SHA1
139aeffbd19ff9aab45dd9a83c8b7bfab1c6cf8e

SHA256
b8bff85f9dceda83deae64e7f129db1ba940fe65655253da098c665f53d08acd

SHA512
b1c9d0e421667e79b33fca230c9da441d56cfbd8c550b1b751248d728ee28458aed97542d97a8a9ff2608fcce59410b34a01a1cdb732608030cee528c37cab1c

Download Submit
memory/2088-8-0x0000000000400000-0x000000000076F000-memory.dmp

Filesize
3.4MB

Download
memory/2088-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2088-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2088-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2088-9-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2088-1-0x00000000008C0000-0x00000000009C0000-memory.dmp

Filesize
1024KB

Download
memory/2760-17-0x0000000000400000-0x000000000076F000-memory.dmp

Filesize
3.4MB

Download
memory/2804-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2804-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2804-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2804-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2804-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads