tofsee | 8de70b11b35097da33e0d5dd0e501ab30c1e7848bfa1339ae111208720412a2e

Analysis

max time kernel
149s
max time network
149s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
24-12-2024 03:21

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General

Target

JaffaCakes118_8de70b11b35097da33e0d5dd0e501ab30c1e7848bfa1339ae111208720412a2e.exe
Size

169KB
MD5

ae26a7d97f24de1ccb18f6e8d5c2b17e
SHA1

db1699530d888798f5755c6fa49b510735ee382c
SHA256

8de70b11b35097da33e0d5dd0e501ab30c1e7848bfa1339ae111208720412a2e
SHA512

08c8c53f698d20167058d26b973c95fe639b7f2b7812c3b8b4ee6a89088d9917ec0ea31a3d34592400976bf2b3419993d7b5207830e396bc89701c5b69b8e723
SSDEEP

3072:ZINEppMfEjnjh9fzRq6aMLsKdGtkZwA/e22:ONEppMfEhLq69ssAkZ0J

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\ywltfbcr = "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
2676	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\ywltfbcr\ImagePath = "C:\\Windows\\SysWOW64\\ywltfbcr\\blqdkfet.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
1640	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2620	blqdkfet.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2620 set thread context of 1640	2620	blqdkfet.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2584	sc.exe
2836	sc.exe
2552	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\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	blqdkfet.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_8de70b11b35097da33e0d5dd0e501ab30c1e7848bfa1339ae111208720412a2e.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2804 wrote to memory of 2920	2804	JaffaCakes118_8de70b11b35097da33e0d5dd0e501ab30c1e7848bfa1339ae111208720412a2e.exe	31
PID 2804 wrote to memory of 2920	2804	JaffaCakes118_8de70b11b35097da33e0d5dd0e501ab30c1e7848bfa1339ae111208720412a2e.exe	31
PID 2804 wrote to memory of 2920	2804	JaffaCakes118_8de70b11b35097da33e0d5dd0e501ab30c1e7848bfa1339ae111208720412a2e.exe	31
PID 2804 wrote to memory of 2920	2804	JaffaCakes118_8de70b11b35097da33e0d5dd0e501ab30c1e7848bfa1339ae111208720412a2e.exe	31
PID 2804 wrote to memory of 2404	2804	JaffaCakes118_8de70b11b35097da33e0d5dd0e501ab30c1e7848bfa1339ae111208720412a2e.exe	33
PID 2804 wrote to memory of 2404	2804	JaffaCakes118_8de70b11b35097da33e0d5dd0e501ab30c1e7848bfa1339ae111208720412a2e.exe	33
PID 2804 wrote to memory of 2404	2804	JaffaCakes118_8de70b11b35097da33e0d5dd0e501ab30c1e7848bfa1339ae111208720412a2e.exe	33
PID 2804 wrote to memory of 2404	2804	JaffaCakes118_8de70b11b35097da33e0d5dd0e501ab30c1e7848bfa1339ae111208720412a2e.exe	33
PID 2804 wrote to memory of 2584	2804	JaffaCakes118_8de70b11b35097da33e0d5dd0e501ab30c1e7848bfa1339ae111208720412a2e.exe	35
PID 2804 wrote to memory of 2584	2804	JaffaCakes118_8de70b11b35097da33e0d5dd0e501ab30c1e7848bfa1339ae111208720412a2e.exe	35
PID 2804 wrote to memory of 2584	2804	JaffaCakes118_8de70b11b35097da33e0d5dd0e501ab30c1e7848bfa1339ae111208720412a2e.exe	35
PID 2804 wrote to memory of 2584	2804	JaffaCakes118_8de70b11b35097da33e0d5dd0e501ab30c1e7848bfa1339ae111208720412a2e.exe	35
PID 2804 wrote to memory of 2836	2804	JaffaCakes118_8de70b11b35097da33e0d5dd0e501ab30c1e7848bfa1339ae111208720412a2e.exe	37
PID 2804 wrote to memory of 2836	2804	JaffaCakes118_8de70b11b35097da33e0d5dd0e501ab30c1e7848bfa1339ae111208720412a2e.exe	37
PID 2804 wrote to memory of 2836	2804	JaffaCakes118_8de70b11b35097da33e0d5dd0e501ab30c1e7848bfa1339ae111208720412a2e.exe	37
PID 2804 wrote to memory of 2836	2804	JaffaCakes118_8de70b11b35097da33e0d5dd0e501ab30c1e7848bfa1339ae111208720412a2e.exe	37
PID 2804 wrote to memory of 2552	2804	JaffaCakes118_8de70b11b35097da33e0d5dd0e501ab30c1e7848bfa1339ae111208720412a2e.exe	39
PID 2804 wrote to memory of 2552	2804	JaffaCakes118_8de70b11b35097da33e0d5dd0e501ab30c1e7848bfa1339ae111208720412a2e.exe	39
PID 2804 wrote to memory of 2552	2804	JaffaCakes118_8de70b11b35097da33e0d5dd0e501ab30c1e7848bfa1339ae111208720412a2e.exe	39
PID 2804 wrote to memory of 2552	2804	JaffaCakes118_8de70b11b35097da33e0d5dd0e501ab30c1e7848bfa1339ae111208720412a2e.exe	39
PID 2804 wrote to memory of 2676	2804	JaffaCakes118_8de70b11b35097da33e0d5dd0e501ab30c1e7848bfa1339ae111208720412a2e.exe	42
PID 2804 wrote to memory of 2676	2804	JaffaCakes118_8de70b11b35097da33e0d5dd0e501ab30c1e7848bfa1339ae111208720412a2e.exe	42
PID 2804 wrote to memory of 2676	2804	JaffaCakes118_8de70b11b35097da33e0d5dd0e501ab30c1e7848bfa1339ae111208720412a2e.exe	42
PID 2804 wrote to memory of 2676	2804	JaffaCakes118_8de70b11b35097da33e0d5dd0e501ab30c1e7848bfa1339ae111208720412a2e.exe	42
PID 2620 wrote to memory of 1640	2620	blqdkfet.exe	44
PID 2620 wrote to memory of 1640	2620	blqdkfet.exe	44
PID 2620 wrote to memory of 1640	2620	blqdkfet.exe	44
PID 2620 wrote to memory of 1640	2620	blqdkfet.exe	44
PID 2620 wrote to memory of 1640	2620	blqdkfet.exe	44
PID 2620 wrote to memory of 1640	2620	blqdkfet.exe	44

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8de70b11b35097da33e0d5dd0e501ab30c1e7848bfa1339ae111208720412a2e.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8de70b11b35097da33e0d5dd0e501ab30c1e7848bfa1339ae111208720412a2e.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2804
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ywltfbcr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2920
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\blqdkfet.exe" C:\Windows\SysWOW64\ywltfbcr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2404
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ywltfbcr binPath= "C:\Windows\SysWOW64\ywltfbcr\blqdkfet.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8de70b11b35097da33e0d5dd0e501ab30c1e7848bfa1339ae111208720412a2e.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2584
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ywltfbcr "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2836
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ywltfbcr
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2552
- 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:2676

C:\Windows\SysWOW64\ywltfbcr\blqdkfet.exe
C:\Windows\SysWOW64\ywltfbcr\blqdkfet.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8de70b11b35097da33e0d5dd0e501ab30c1e7848bfa1339ae111208720412a2e.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2620
- 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:1640

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\blqdkfet.exe

Filesize
12.8MB

MD5
f74ad4dd50a9fa45575a6b7cad7c5dce

SHA1
9f8490e4b329ede6029d8db461ad9727da98e589

SHA256
9958a11ea02de269bd1390a388650a9a9746126abb6a8bc7cdad4358188ec813

SHA512
7c7a11aa77d30db53e8bbde0228dd4948d6c11b1a11b826995c776ee732a69246c9c450ea3688d9974ecdc99f06ad3711756968c14a1d45c5dee61c793892cbf

Download Submit
memory/1640-13-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1640-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1640-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1640-10-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1640-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2620-16-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/2804-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2804-1-0x00000000003B0000-0x00000000003C3000-memory.dmp

Filesize
76KB

Download
memory/2804-6-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/2804-7-0x00000000003A0000-0x00000000003AD000-memory.dmp

Filesize
52KB

Download
memory/2804-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2804-8-0x00000000003B0000-0x00000000003C3000-memory.dmp

Filesize
76KB

Download
memory/2804-0-0x00000000003A0000-0x00000000003AD000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads