tofsee | edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20

Analysis

max time kernel
118s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22-11-2024 08:52

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General

Target

edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe
Size

13.3MB
MD5

57163e49f6f67475836d3d49abab1a6f
SHA1

b11e58b16d751db535317a0aacca97c20ae7ba25
SHA256

edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20
SHA512

32f162b0b70ad5efe95974078d446d836cb7665db344a93295e7fc2f4a738f661ea79c67ac7ea30ace95d5834ef6f491f5b291f0e5072ff8c43e6545957bc256
SSDEEP

49152:f1m333333333333333333333333333333333333333333333333333333333333w:l

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

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

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\rbrrqxni = "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

pid	Process
2900	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\rbrrqxni\ImagePath = "C:\\Windows\\SysWOW64\\rbrrqxni\\xdybktto.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2628	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2828	xdybktto.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2828 set thread context of 2628	2828	xdybktto.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
352	sc.exe
2040	sc.exe
2740	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	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xdybktto.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2396 wrote to memory of 2104	2396	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	30
PID 2396 wrote to memory of 2104	2396	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	30
PID 2396 wrote to memory of 2104	2396	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	30
PID 2396 wrote to memory of 2104	2396	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	30
PID 2396 wrote to memory of 1184	2396	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	32
PID 2396 wrote to memory of 1184	2396	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	32
PID 2396 wrote to memory of 1184	2396	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	32
PID 2396 wrote to memory of 1184	2396	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	32
PID 2396 wrote to memory of 352	2396	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	34
PID 2396 wrote to memory of 352	2396	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	34
PID 2396 wrote to memory of 352	2396	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	34
PID 2396 wrote to memory of 352	2396	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	34
PID 2396 wrote to memory of 2040	2396	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	36
PID 2396 wrote to memory of 2040	2396	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	36
PID 2396 wrote to memory of 2040	2396	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	36
PID 2396 wrote to memory of 2040	2396	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	36
PID 2396 wrote to memory of 2740	2396	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	38
PID 2396 wrote to memory of 2740	2396	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	38
PID 2396 wrote to memory of 2740	2396	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	38
PID 2396 wrote to memory of 2740	2396	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	38
PID 2396 wrote to memory of 2900	2396	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	41
PID 2396 wrote to memory of 2900	2396	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	41
PID 2396 wrote to memory of 2900	2396	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	41
PID 2396 wrote to memory of 2900	2396	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	41
PID 2828 wrote to memory of 2628	2828	xdybktto.exe	43
PID 2828 wrote to memory of 2628	2828	xdybktto.exe	43
PID 2828 wrote to memory of 2628	2828	xdybktto.exe	43
PID 2828 wrote to memory of 2628	2828	xdybktto.exe	43
PID 2828 wrote to memory of 2628	2828	xdybktto.exe	43
PID 2828 wrote to memory of 2628	2828	xdybktto.exe	43

C:\Users\Admin\AppData\Local\Temp\edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe
"C:\Users\Admin\AppData\Local\Temp\edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2396
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rbrrqxni\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2104
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xdybktto.exe" C:\Windows\SysWOW64\rbrrqxni\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1184
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create rbrrqxni binPath= "C:\Windows\SysWOW64\rbrrqxni\xdybktto.exe /d\"C:\Users\Admin\AppData\Local\Temp\edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:352
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description rbrrqxni "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2040
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start rbrrqxni
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2740
- 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:2900

C:\Windows\SysWOW64\rbrrqxni\xdybktto.exe
C:\Windows\SysWOW64\rbrrqxni\xdybktto.exe /d"C:\Users\Admin\AppData\Local\Temp\edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2828
- 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:2628

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
13.3MB

MD5
b460616088a594b836f543781bdc3a8b

SHA1
d92a604e9fed031bd726c2fa161ffce3e25bb385

SHA256
2bbd19cdc916f6515245ccd581791d15090f06204179e934f05a92c1bff87625

SHA512
e09aede42b84304d8ba1cd2e33d6adeccdd85cc24d215cc092d000f5abddb434573a63d42abdf928451aaeb9f386d60e993097dd8dab261b96ccdd660d64cc3a

Download Submit
memory/2396-9-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2396-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2396-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2396-8-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/2396-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2396-1-0x0000000001830000-0x0000000001930000-memory.dmp

Filesize
1024KB

Download
memory/2628-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2628-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2628-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2628-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2628-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2828-17-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads