tofsee | 91fb824a61a9ddb8c1f961e2f3b1acde927c129ea64c117272fbb5f25f40f91d

Analysis

max time kernel
58s
max time network
61s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
23-11-2024 19:40

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

91fb824a61a9ddb8c1f961e2f3b1acde927c129ea64c117272fbb5f25f40f91d.exe
Size

10.1MB
MD5

fbebf7e29e3295a4d97c825b1efd17f0
SHA1

84dbfb2b72a828c9bd7024dac9e0344f68c2c6c9
SHA256

91fb824a61a9ddb8c1f961e2f3b1acde927c129ea64c117272fbb5f25f40f91d
SHA512

f1d905a77db3160010c8aa19bdc4522b6f0900ebab5e585331f7724a30d887f6b35714f420f6a13f6a775e77b7f2c6bbf6a3387168e935f2a0e56de8d05c3a66
SSDEEP

49152:3vUWkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkn:3

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
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
2812	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\tbeuflcr\ImagePath = "C:\\Windows\\SysWOW64\\tbeuflcr\\bktbphpy.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2788	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2300	bktbphpy.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2300 set thread context of 2788	2300	bktbphpy.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2356	sc.exe
2684	sc.exe
1552	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	91fb824a61a9ddb8c1f961e2f3b1acde927c129ea64c117272fbb5f25f40f91d.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bktbphpy.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 464 wrote to memory of 1852	464	91fb824a61a9ddb8c1f961e2f3b1acde927c129ea64c117272fbb5f25f40f91d.exe	30
PID 464 wrote to memory of 1852	464	91fb824a61a9ddb8c1f961e2f3b1acde927c129ea64c117272fbb5f25f40f91d.exe	30
PID 464 wrote to memory of 1852	464	91fb824a61a9ddb8c1f961e2f3b1acde927c129ea64c117272fbb5f25f40f91d.exe	30
PID 464 wrote to memory of 1852	464	91fb824a61a9ddb8c1f961e2f3b1acde927c129ea64c117272fbb5f25f40f91d.exe	30
PID 464 wrote to memory of 340	464	91fb824a61a9ddb8c1f961e2f3b1acde927c129ea64c117272fbb5f25f40f91d.exe	32
PID 464 wrote to memory of 340	464	91fb824a61a9ddb8c1f961e2f3b1acde927c129ea64c117272fbb5f25f40f91d.exe	32
PID 464 wrote to memory of 340	464	91fb824a61a9ddb8c1f961e2f3b1acde927c129ea64c117272fbb5f25f40f91d.exe	32
PID 464 wrote to memory of 340	464	91fb824a61a9ddb8c1f961e2f3b1acde927c129ea64c117272fbb5f25f40f91d.exe	32
PID 464 wrote to memory of 2356	464	91fb824a61a9ddb8c1f961e2f3b1acde927c129ea64c117272fbb5f25f40f91d.exe	34
PID 464 wrote to memory of 2356	464	91fb824a61a9ddb8c1f961e2f3b1acde927c129ea64c117272fbb5f25f40f91d.exe	34
PID 464 wrote to memory of 2356	464	91fb824a61a9ddb8c1f961e2f3b1acde927c129ea64c117272fbb5f25f40f91d.exe	34
PID 464 wrote to memory of 2356	464	91fb824a61a9ddb8c1f961e2f3b1acde927c129ea64c117272fbb5f25f40f91d.exe	34
PID 464 wrote to memory of 2684	464	91fb824a61a9ddb8c1f961e2f3b1acde927c129ea64c117272fbb5f25f40f91d.exe	36
PID 464 wrote to memory of 2684	464	91fb824a61a9ddb8c1f961e2f3b1acde927c129ea64c117272fbb5f25f40f91d.exe	36
PID 464 wrote to memory of 2684	464	91fb824a61a9ddb8c1f961e2f3b1acde927c129ea64c117272fbb5f25f40f91d.exe	36
PID 464 wrote to memory of 2684	464	91fb824a61a9ddb8c1f961e2f3b1acde927c129ea64c117272fbb5f25f40f91d.exe	36
PID 464 wrote to memory of 1552	464	91fb824a61a9ddb8c1f961e2f3b1acde927c129ea64c117272fbb5f25f40f91d.exe	38
PID 464 wrote to memory of 1552	464	91fb824a61a9ddb8c1f961e2f3b1acde927c129ea64c117272fbb5f25f40f91d.exe	38
PID 464 wrote to memory of 1552	464	91fb824a61a9ddb8c1f961e2f3b1acde927c129ea64c117272fbb5f25f40f91d.exe	38
PID 464 wrote to memory of 1552	464	91fb824a61a9ddb8c1f961e2f3b1acde927c129ea64c117272fbb5f25f40f91d.exe	38
PID 464 wrote to memory of 2812	464	91fb824a61a9ddb8c1f961e2f3b1acde927c129ea64c117272fbb5f25f40f91d.exe	41
PID 464 wrote to memory of 2812	464	91fb824a61a9ddb8c1f961e2f3b1acde927c129ea64c117272fbb5f25f40f91d.exe	41
PID 464 wrote to memory of 2812	464	91fb824a61a9ddb8c1f961e2f3b1acde927c129ea64c117272fbb5f25f40f91d.exe	41
PID 464 wrote to memory of 2812	464	91fb824a61a9ddb8c1f961e2f3b1acde927c129ea64c117272fbb5f25f40f91d.exe	41
PID 2300 wrote to memory of 2788	2300	bktbphpy.exe	44
PID 2300 wrote to memory of 2788	2300	bktbphpy.exe	44
PID 2300 wrote to memory of 2788	2300	bktbphpy.exe	44
PID 2300 wrote to memory of 2788	2300	bktbphpy.exe	44
PID 2300 wrote to memory of 2788	2300	bktbphpy.exe	44
PID 2300 wrote to memory of 2788	2300	bktbphpy.exe	44

C:\Users\Admin\AppData\Local\Temp\91fb824a61a9ddb8c1f961e2f3b1acde927c129ea64c117272fbb5f25f40f91d.exe
"C:\Users\Admin\AppData\Local\Temp\91fb824a61a9ddb8c1f961e2f3b1acde927c129ea64c117272fbb5f25f40f91d.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:464
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tbeuflcr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1852
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bktbphpy.exe" C:\Windows\SysWOW64\tbeuflcr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:340
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create tbeuflcr binPath= "C:\Windows\SysWOW64\tbeuflcr\bktbphpy.exe /d\"C:\Users\Admin\AppData\Local\Temp\91fb824a61a9ddb8c1f961e2f3b1acde927c129ea64c117272fbb5f25f40f91d.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2356
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description tbeuflcr "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2684
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start tbeuflcr
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1552
- 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:2812

C:\Windows\SysWOW64\tbeuflcr\bktbphpy.exe
C:\Windows\SysWOW64\tbeuflcr\bktbphpy.exe /d"C:\Users\Admin\AppData\Local\Temp\91fb824a61a9ddb8c1f961e2f3b1acde927c129ea64c117272fbb5f25f40f91d.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2300
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2788

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

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\bktbphpy.exe

Filesize
11.6MB

MD5
882abab01e62edee9b3bde8543871c07

SHA1
113579d4f3a31b71150ce86c24dfa87365673a0d

SHA256
c6b2fb2369cee0dadab16570d8f34a2f8b0eee7b643541c24d9c98821b18f6a0

SHA512
ad9d0513a810977d825e2bfdc880c627b7a7f7742deee2cc0f298b64f4a4fe1d72a13470c5c5481c5a49b34eaafa5a5fe06f119f4fb61e2cab0053014bb6aee5

Download Submit
memory/464-8-0x0000000000400000-0x0000000002DA4000-memory.dmp

Filesize
41.6MB

Download
memory/464-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/464-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/464-9-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/464-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/464-1-0x0000000002F70000-0x0000000003070000-memory.dmp

Filesize
1024KB

Download
memory/2300-15-0x0000000000400000-0x0000000002DA4000-memory.dmp

Filesize
41.6MB

Download
memory/2788-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2788-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2788-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2788-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2788-18-0x0000000000080000-0x0000000000095000-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