tofsee | bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794

Analysis

max time kernel
149s
max time network
151s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
24-11-2024 04:34

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General

Target

bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe
Size

10.0MB
MD5

e73ea7459977529317345e65c0f15267
SHA1

345f6930733b34578650cb65168ee93aa45457eb
SHA256

bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794
SHA512

1e89c8bac3fbfe785d271ba48680b50c259438b7816429b6dfa5d976fc46276a4749c837576667fac90249e50182691d52cee0d11b6d8ef1db97dedcf16113f0
SSDEEP

49152:bkHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHP:I

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\hkwmxeia = "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
2792	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\hkwmxeia\ImagePath = "C:\\Windows\\SysWOW64\\hkwmxeia\\cvgwhexq.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2904	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2812	cvgwhexq.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2812 set thread context of 2904	2812	cvgwhexq.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2276	sc.exe
2456	sc.exe
2696	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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	cvgwhexq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.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

description	pid	Process	procid_target
PID 1556 wrote to memory of 2676	1556	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	30
PID 1556 wrote to memory of 2676	1556	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	30
PID 1556 wrote to memory of 2676	1556	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	30
PID 1556 wrote to memory of 2676	1556	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	30
PID 1556 wrote to memory of 2064	1556	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	32
PID 1556 wrote to memory of 2064	1556	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	32
PID 1556 wrote to memory of 2064	1556	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	32
PID 1556 wrote to memory of 2064	1556	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	32
PID 1556 wrote to memory of 2276	1556	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	34
PID 1556 wrote to memory of 2276	1556	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	34
PID 1556 wrote to memory of 2276	1556	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	34
PID 1556 wrote to memory of 2276	1556	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	34
PID 1556 wrote to memory of 2456	1556	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	36
PID 1556 wrote to memory of 2456	1556	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	36
PID 1556 wrote to memory of 2456	1556	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	36
PID 1556 wrote to memory of 2456	1556	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	36
PID 1556 wrote to memory of 2696	1556	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	38
PID 1556 wrote to memory of 2696	1556	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	38
PID 1556 wrote to memory of 2696	1556	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	38
PID 1556 wrote to memory of 2696	1556	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	38
PID 1556 wrote to memory of 2792	1556	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	41
PID 1556 wrote to memory of 2792	1556	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	41
PID 1556 wrote to memory of 2792	1556	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	41
PID 1556 wrote to memory of 2792	1556	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	41
PID 2812 wrote to memory of 2904	2812	cvgwhexq.exe	43
PID 2812 wrote to memory of 2904	2812	cvgwhexq.exe	43
PID 2812 wrote to memory of 2904	2812	cvgwhexq.exe	43
PID 2812 wrote to memory of 2904	2812	cvgwhexq.exe	43
PID 2812 wrote to memory of 2904	2812	cvgwhexq.exe	43
PID 2812 wrote to memory of 2904	2812	cvgwhexq.exe	43

C:\Users\Admin\AppData\Local\Temp\bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe
"C:\Users\Admin\AppData\Local\Temp\bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1556
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hkwmxeia\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2676
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cvgwhexq.exe" C:\Windows\SysWOW64\hkwmxeia\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2064
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create hkwmxeia binPath= "C:\Windows\SysWOW64\hkwmxeia\cvgwhexq.exe /d\"C:\Users\Admin\AppData\Local\Temp\bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2276
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description hkwmxeia "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2456
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start hkwmxeia
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2696
- 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:2792

C:\Windows\SysWOW64\hkwmxeia\cvgwhexq.exe
C:\Windows\SysWOW64\hkwmxeia\cvgwhexq.exe /d"C:\Users\Admin\AppData\Local\Temp\bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2812
- 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:2904

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\cvgwhexq.exe

Filesize
14.2MB

MD5
8d930b4d0d3c3374f6830d7c4155ba25

SHA1
6a5a3db8bb7cf390368458a7ee41800e779d30fb

SHA256
cf1e07dca443db14b7d9ea1a694252b554d813a46131aa66998ac9441c9142bd

SHA512
0a53fe91ef43446d56af7958b02ab9c93601cf18bde595df6ae347a4a42d67a12b485888ff0e79786d38706bb948511bd92ee3d0af2b7d1dc2b3c16b339f468b

Download Submit
memory/1556-9-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/1556-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1556-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/1556-8-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/1556-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1556-1-0x00000000008D0000-0x00000000009D0000-memory.dmp

Filesize
1024KB

Download
memory/2812-15-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/2904-17-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2904-14-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2904-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2904-11-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2904-18-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads