tofsee | f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4

Analysis

max time kernel
120s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22-11-2024 09:12

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General

Target

f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe
Size

11.0MB
MD5

3a73e3f5ff0ad1e222cac36e03b9fe66
SHA1

155126c64e86e8f6830dd377417bd750b3f0b6e3
SHA256

f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4
SHA512

b97bd61b89eafacf4e652a8f0ab9b284018d18911f4a5604a4e1ff3d16cbb4d1345265ee226d0dd26d1690fe4e3056ed682c659207b7a60ccd1a0e9ec73abc1c
SSDEEP

49152:wNxtFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFg:WO

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\uwnhnkpi = "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
2944	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\uwnhnkpi\ImagePath = "C:\\Windows\\SysWOW64\\uwnhnkpi\\wxvfibgr.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2644	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2832	wxvfibgr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2832 set thread context of 2644	2832	wxvfibgr.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
604	sc.exe
992	sc.exe
2756	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	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	wxvfibgr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.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	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2252 wrote to memory of 1604	2252	f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe	30
PID 2252 wrote to memory of 1604	2252	f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe	30
PID 2252 wrote to memory of 1604	2252	f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe	30
PID 2252 wrote to memory of 1604	2252	f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe	30
PID 2252 wrote to memory of 2692	2252	f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe	32
PID 2252 wrote to memory of 2692	2252	f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe	32
PID 2252 wrote to memory of 2692	2252	f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe	32
PID 2252 wrote to memory of 2692	2252	f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe	32
PID 2252 wrote to memory of 604	2252	f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe	35
PID 2252 wrote to memory of 604	2252	f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe	35
PID 2252 wrote to memory of 604	2252	f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe	35
PID 2252 wrote to memory of 604	2252	f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe	35
PID 2252 wrote to memory of 992	2252	f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe	37
PID 2252 wrote to memory of 992	2252	f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe	37
PID 2252 wrote to memory of 992	2252	f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe	37
PID 2252 wrote to memory of 992	2252	f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe	37
PID 2252 wrote to memory of 2756	2252	f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe	39
PID 2252 wrote to memory of 2756	2252	f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe	39
PID 2252 wrote to memory of 2756	2252	f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe	39
PID 2252 wrote to memory of 2756	2252	f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe	39
PID 2252 wrote to memory of 2944	2252	f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe	42
PID 2252 wrote to memory of 2944	2252	f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe	42
PID 2252 wrote to memory of 2944	2252	f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe	42
PID 2252 wrote to memory of 2944	2252	f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe	42
PID 2832 wrote to memory of 2644	2832	wxvfibgr.exe	44
PID 2832 wrote to memory of 2644	2832	wxvfibgr.exe	44
PID 2832 wrote to memory of 2644	2832	wxvfibgr.exe	44
PID 2832 wrote to memory of 2644	2832	wxvfibgr.exe	44
PID 2832 wrote to memory of 2644	2832	wxvfibgr.exe	44
PID 2832 wrote to memory of 2644	2832	wxvfibgr.exe	44

C:\Users\Admin\AppData\Local\Temp\f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe
"C:\Users\Admin\AppData\Local\Temp\f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2252
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\uwnhnkpi\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1604
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wxvfibgr.exe" C:\Windows\SysWOW64\uwnhnkpi\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2692
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create uwnhnkpi binPath= "C:\Windows\SysWOW64\uwnhnkpi\wxvfibgr.exe /d\"C:\Users\Admin\AppData\Local\Temp\f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:604
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description uwnhnkpi "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:992
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start uwnhnkpi
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2756
- 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:2944

C:\Windows\SysWOW64\uwnhnkpi\wxvfibgr.exe
C:\Windows\SysWOW64\uwnhnkpi\wxvfibgr.exe /d"C:\Users\Admin\AppData\Local\Temp\f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2832
- 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:2644

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\wxvfibgr.exe

Filesize
10.2MB

MD5
f9a2b9b8f244af62e543d95be3899c8f

SHA1
32ebd4c761c7e850d9b95ae3c8e35a81c1b2deb7

SHA256
380665231cdae1660f057f90b1d0b6da59096e4a6ff041d5f3977107503486ae

SHA512
6fc6322ecc30e26b02ba48d9f1050af01f9bd14c70f3102871cd98c2a12bd43a7f778568b232422f1e492b5328afcef2f560cff53dec1e5e1fc8541661cb9fa9

Download Submit
memory/2252-7-0x0000000000230000-0x000000000023D000-memory.dmp

Filesize
52KB

Download
memory/2252-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2252-1-0x0000000000240000-0x0000000000253000-memory.dmp

Filesize
76KB

Download
memory/2252-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2252-8-0x0000000000240000-0x0000000000253000-memory.dmp

Filesize
76KB

Download
memory/2252-0-0x0000000000230000-0x000000000023D000-memory.dmp

Filesize
52KB

Download
memory/2252-6-0x0000000000400000-0x0000000002F06000-memory.dmp

Filesize
43.0MB

Download
memory/2644-10-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2644-13-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2644-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2644-16-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2644-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2832-14-0x0000000000400000-0x0000000002F06000-memory.dmp

Filesize
43.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads