tofsee | 8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
23-11-2024 05:53

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General

Target

8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe
Size

13.9MB
MD5

79dc2160ea73f5a008c5a7b25fb1f1ec
SHA1

329fd850c1dd7541b67ff9b76d532645549a69e0
SHA256

8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61
SHA512

02554429e5526535d1e82feb39b24f88a4bd068355a46efe3b335a57bd417276d4ae8d976a28bb26913c37d55ccb90898c0b115057d1e3924eb795b76db3bb6e
SSDEEP

49152:2yzapZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZy:2CF

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\bearqygv = "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
2860	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\bearqygv\ImagePath = "C:\\Windows\\SysWOW64\\bearqygv\\rsqadwbm.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
3008	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2116	rsqadwbm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2116 set thread context of 3008	2116	rsqadwbm.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
1596	sc.exe
2400	sc.exe
2732	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	svchost.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	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.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	rsqadwbm.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2452 wrote to memory of 2068	2452	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	30
PID 2452 wrote to memory of 2068	2452	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	30
PID 2452 wrote to memory of 2068	2452	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	30
PID 2452 wrote to memory of 2068	2452	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	30
PID 2452 wrote to memory of 2564	2452	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	32
PID 2452 wrote to memory of 2564	2452	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	32
PID 2452 wrote to memory of 2564	2452	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	32
PID 2452 wrote to memory of 2564	2452	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	32
PID 2452 wrote to memory of 1596	2452	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	34
PID 2452 wrote to memory of 1596	2452	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	34
PID 2452 wrote to memory of 1596	2452	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	34
PID 2452 wrote to memory of 1596	2452	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	34
PID 2452 wrote to memory of 2400	2452	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	36
PID 2452 wrote to memory of 2400	2452	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	36
PID 2452 wrote to memory of 2400	2452	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	36
PID 2452 wrote to memory of 2400	2452	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	36
PID 2452 wrote to memory of 2732	2452	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	38
PID 2452 wrote to memory of 2732	2452	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	38
PID 2452 wrote to memory of 2732	2452	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	38
PID 2452 wrote to memory of 2732	2452	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	38
PID 2452 wrote to memory of 2860	2452	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	42
PID 2452 wrote to memory of 2860	2452	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	42
PID 2452 wrote to memory of 2860	2452	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	42
PID 2452 wrote to memory of 2860	2452	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	42
PID 2116 wrote to memory of 3008	2116	rsqadwbm.exe	44
PID 2116 wrote to memory of 3008	2116	rsqadwbm.exe	44
PID 2116 wrote to memory of 3008	2116	rsqadwbm.exe	44
PID 2116 wrote to memory of 3008	2116	rsqadwbm.exe	44
PID 2116 wrote to memory of 3008	2116	rsqadwbm.exe	44
PID 2116 wrote to memory of 3008	2116	rsqadwbm.exe	44

C:\Users\Admin\AppData\Local\Temp\8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe
"C:\Users\Admin\AppData\Local\Temp\8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2452
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bearqygv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2068
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rsqadwbm.exe" C:\Windows\SysWOW64\bearqygv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2564
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bearqygv binPath= "C:\Windows\SysWOW64\bearqygv\rsqadwbm.exe /d\"C:\Users\Admin\AppData\Local\Temp\8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1596
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bearqygv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2400
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bearqygv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2732
- 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:2860

C:\Windows\SysWOW64\bearqygv\rsqadwbm.exe
C:\Windows\SysWOW64\bearqygv\rsqadwbm.exe /d"C:\Users\Admin\AppData\Local\Temp\8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2116
- 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:3008

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\rsqadwbm.exe

Filesize
14.9MB

MD5
c74fb73f43b20662e512d7e2ea6bda63

SHA1
e5bee5c47f869b444479e8061c2c373af36c5a46

SHA256
39ad830a343b38f4941aae4ad1fcc50c50424b6f0cfe55df34059a1c9b5044d1

SHA512
d6393d86fe7b09fc29bcc968b3fd3d260f92897ec0b7176137b55edf4ee85b60d141fe953a00a988d51c2a319b83e1b3f35b978acf6e9af19aed47fd6f3511d2

Download Submit
memory/2116-16-0x0000000000400000-0x00000000016BD000-memory.dmp

Filesize
18.7MB

Download
memory/2452-9-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2452-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2452-8-0x0000000000400000-0x00000000016BD000-memory.dmp

Filesize
18.7MB

Download
memory/2452-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2452-1-0x00000000017D0000-0x00000000018D0000-memory.dmp

Filesize
1024KB

Download
memory/2452-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/3008-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3008-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3008-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3008-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3008-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads