tofsee | c50e7c2d2c00a1af395a135c572cd87831018afc3d8b9e1cb4ef52b830ebacf1

Analysis

max time kernel
150s
max time network
147s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
21-12-2024 17:35

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

c50e7c2d2c00a1af395a135c572cd87831018afc3d8b9e1cb4ef52b830ebacf1.exe
Size

296KB
MD5

67a2a9995cd99df72c5081dbfa1c1ce5
SHA1

83038eaceb154fe11abd360df3278bbb15a9d581
SHA256

c50e7c2d2c00a1af395a135c572cd87831018afc3d8b9e1cb4ef52b830ebacf1
SHA512

bb2794429057896e92be9dea9fd1ed51e21e873c96bb3402dd229cfb9181b05d71ff519790ac3c0316bfec8402eb3f5738e0bfab00c7ddb1af92c0d1d74d8de8
SSDEEP

6144:kC35+ynOr72R6HfyNX26SXuZet0yy87oG+FPxuISKt0:kCp+YOr7z/yNG6SXuZet0yy87WPxuIf

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\omtqrndm = "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
2912	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\omtqrndm\ImagePath = "C:\\Windows\\SysWOW64\\omtqrndm\\enwesksb.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2944	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2816	enwesksb.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2816 set thread context of 2944	2816	enwesksb.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2948	sc.exe
1148	sc.exe
3048	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 queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c50e7c2d2c00a1af395a135c572cd87831018afc3d8b9e1cb4ef52b830ebacf1.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	enwesksb.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2272 wrote to memory of 2552	2272	c50e7c2d2c00a1af395a135c572cd87831018afc3d8b9e1cb4ef52b830ebacf1.exe	30
PID 2272 wrote to memory of 2552	2272	c50e7c2d2c00a1af395a135c572cd87831018afc3d8b9e1cb4ef52b830ebacf1.exe	30
PID 2272 wrote to memory of 2552	2272	c50e7c2d2c00a1af395a135c572cd87831018afc3d8b9e1cb4ef52b830ebacf1.exe	30
PID 2272 wrote to memory of 2552	2272	c50e7c2d2c00a1af395a135c572cd87831018afc3d8b9e1cb4ef52b830ebacf1.exe	30
PID 2272 wrote to memory of 1416	2272	c50e7c2d2c00a1af395a135c572cd87831018afc3d8b9e1cb4ef52b830ebacf1.exe	32
PID 2272 wrote to memory of 1416	2272	c50e7c2d2c00a1af395a135c572cd87831018afc3d8b9e1cb4ef52b830ebacf1.exe	32
PID 2272 wrote to memory of 1416	2272	c50e7c2d2c00a1af395a135c572cd87831018afc3d8b9e1cb4ef52b830ebacf1.exe	32
PID 2272 wrote to memory of 1416	2272	c50e7c2d2c00a1af395a135c572cd87831018afc3d8b9e1cb4ef52b830ebacf1.exe	32
PID 2272 wrote to memory of 2948	2272	c50e7c2d2c00a1af395a135c572cd87831018afc3d8b9e1cb4ef52b830ebacf1.exe	34
PID 2272 wrote to memory of 2948	2272	c50e7c2d2c00a1af395a135c572cd87831018afc3d8b9e1cb4ef52b830ebacf1.exe	34
PID 2272 wrote to memory of 2948	2272	c50e7c2d2c00a1af395a135c572cd87831018afc3d8b9e1cb4ef52b830ebacf1.exe	34
PID 2272 wrote to memory of 2948	2272	c50e7c2d2c00a1af395a135c572cd87831018afc3d8b9e1cb4ef52b830ebacf1.exe	34
PID 2272 wrote to memory of 1148	2272	c50e7c2d2c00a1af395a135c572cd87831018afc3d8b9e1cb4ef52b830ebacf1.exe	36
PID 2272 wrote to memory of 1148	2272	c50e7c2d2c00a1af395a135c572cd87831018afc3d8b9e1cb4ef52b830ebacf1.exe	36
PID 2272 wrote to memory of 1148	2272	c50e7c2d2c00a1af395a135c572cd87831018afc3d8b9e1cb4ef52b830ebacf1.exe	36
PID 2272 wrote to memory of 1148	2272	c50e7c2d2c00a1af395a135c572cd87831018afc3d8b9e1cb4ef52b830ebacf1.exe	36
PID 2272 wrote to memory of 3048	2272	c50e7c2d2c00a1af395a135c572cd87831018afc3d8b9e1cb4ef52b830ebacf1.exe	38
PID 2272 wrote to memory of 3048	2272	c50e7c2d2c00a1af395a135c572cd87831018afc3d8b9e1cb4ef52b830ebacf1.exe	38
PID 2272 wrote to memory of 3048	2272	c50e7c2d2c00a1af395a135c572cd87831018afc3d8b9e1cb4ef52b830ebacf1.exe	38
PID 2272 wrote to memory of 3048	2272	c50e7c2d2c00a1af395a135c572cd87831018afc3d8b9e1cb4ef52b830ebacf1.exe	38
PID 2272 wrote to memory of 2912	2272	c50e7c2d2c00a1af395a135c572cd87831018afc3d8b9e1cb4ef52b830ebacf1.exe	41
PID 2272 wrote to memory of 2912	2272	c50e7c2d2c00a1af395a135c572cd87831018afc3d8b9e1cb4ef52b830ebacf1.exe	41
PID 2272 wrote to memory of 2912	2272	c50e7c2d2c00a1af395a135c572cd87831018afc3d8b9e1cb4ef52b830ebacf1.exe	41
PID 2272 wrote to memory of 2912	2272	c50e7c2d2c00a1af395a135c572cd87831018afc3d8b9e1cb4ef52b830ebacf1.exe	41
PID 2816 wrote to memory of 2944	2816	enwesksb.exe	43
PID 2816 wrote to memory of 2944	2816	enwesksb.exe	43
PID 2816 wrote to memory of 2944	2816	enwesksb.exe	43
PID 2816 wrote to memory of 2944	2816	enwesksb.exe	43
PID 2816 wrote to memory of 2944	2816	enwesksb.exe	43
PID 2816 wrote to memory of 2944	2816	enwesksb.exe	43

C:\Users\Admin\AppData\Local\Temp\c50e7c2d2c00a1af395a135c572cd87831018afc3d8b9e1cb4ef52b830ebacf1.exe
"C:\Users\Admin\AppData\Local\Temp\c50e7c2d2c00a1af395a135c572cd87831018afc3d8b9e1cb4ef52b830ebacf1.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2272
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\omtqrndm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2552
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\enwesksb.exe" C:\Windows\SysWOW64\omtqrndm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1416
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create omtqrndm binPath= "C:\Windows\SysWOW64\omtqrndm\enwesksb.exe /d\"C:\Users\Admin\AppData\Local\Temp\c50e7c2d2c00a1af395a135c572cd87831018afc3d8b9e1cb4ef52b830ebacf1.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2948
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description omtqrndm "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1148
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start omtqrndm
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3048
- 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:2912

C:\Windows\SysWOW64\omtqrndm\enwesksb.exe
C:\Windows\SysWOW64\omtqrndm\enwesksb.exe /d"C:\Users\Admin\AppData\Local\Temp\c50e7c2d2c00a1af395a135c572cd87831018afc3d8b9e1cb4ef52b830ebacf1.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2816
- 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:2944

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
11.9MB

MD5
3c81d9cfb78f50b42ca02aa1c76160cb

SHA1
101b00f7790e6fa353e38c6a6103dc441ced0190

SHA256
31e7f32fd78ca4843ce1d18efd41aa7f5eb3e4c3ea5d25395663105a13fcf941

SHA512
751912a3c93e5db5bd1e3e108a4f9efd87acd3ac887c50055b688b6ebe9ceb7a85f1798f32500eb540aa35ec82f4c3f914fb0a03ba3135a3090200c6c244821f

Download Submit
memory/2272-8-0x00000000002A0000-0x00000000002B3000-memory.dmp

Filesize
76KB

Download
memory/2272-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2272-1-0x0000000001C70000-0x0000000001D70000-memory.dmp

Filesize
1024KB

Download
memory/2272-7-0x0000000000400000-0x0000000001C00000-memory.dmp

Filesize
24.0MB

Download
memory/2272-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2272-2-0x00000000002A0000-0x00000000002B3000-memory.dmp

Filesize
76KB

Download
memory/2816-17-0x0000000000400000-0x0000000001C00000-memory.dmp

Filesize
24.0MB

Download
memory/2944-16-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2944-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2944-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2944-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2944-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads