tofsee | b0ec02ce75172989fde89ba52703aa80b53d3ca9d4d6d1985fa0d0c25fface99

Analysis

max time kernel
148s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
31-10-2024 06:03

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

81ea89d6b885907097699489aaca7261_JaffaCakes118.exe
Size

12.1MB
MD5

81ea89d6b885907097699489aaca7261
SHA1

cc04ba6273ce4ba0b083bbe93d992a3547cfd6c8
SHA256

b0ec02ce75172989fde89ba52703aa80b53d3ca9d4d6d1985fa0d0c25fface99
SHA512

eb40f112a368dddc382411cdebb8c31556122a28bcaa2893dc82f9b3fff40d8e5d7ed80049065da95150ee82e3ebe70bcdceeb0770c385bdad5faf259092182a
SSDEEP

49152:18yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyP:1

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

43.231.4.6

lazystax.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\eylaymkv = "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
2692	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\eylaymkv\ImagePath = "C:\\Windows\\SysWOW64\\eylaymkv\\dxzcvuu.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2900	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2816	dxzcvuu.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2816 set thread context of 2900	2816	dxzcvuu.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2804	sc.exe
2392	sc.exe
2752	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	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	dxzcvuu.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	81ea89d6b885907097699489aaca7261_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 3060 wrote to memory of 2072	3060	81ea89d6b885907097699489aaca7261_JaffaCakes118.exe	30
PID 3060 wrote to memory of 2072	3060	81ea89d6b885907097699489aaca7261_JaffaCakes118.exe	30
PID 3060 wrote to memory of 2072	3060	81ea89d6b885907097699489aaca7261_JaffaCakes118.exe	30
PID 3060 wrote to memory of 2072	3060	81ea89d6b885907097699489aaca7261_JaffaCakes118.exe	30
PID 3060 wrote to memory of 2616	3060	81ea89d6b885907097699489aaca7261_JaffaCakes118.exe	32
PID 3060 wrote to memory of 2616	3060	81ea89d6b885907097699489aaca7261_JaffaCakes118.exe	32
PID 3060 wrote to memory of 2616	3060	81ea89d6b885907097699489aaca7261_JaffaCakes118.exe	32
PID 3060 wrote to memory of 2616	3060	81ea89d6b885907097699489aaca7261_JaffaCakes118.exe	32
PID 3060 wrote to memory of 2392	3060	81ea89d6b885907097699489aaca7261_JaffaCakes118.exe	34
PID 3060 wrote to memory of 2392	3060	81ea89d6b885907097699489aaca7261_JaffaCakes118.exe	34
PID 3060 wrote to memory of 2392	3060	81ea89d6b885907097699489aaca7261_JaffaCakes118.exe	34
PID 3060 wrote to memory of 2392	3060	81ea89d6b885907097699489aaca7261_JaffaCakes118.exe	34
PID 3060 wrote to memory of 2752	3060	81ea89d6b885907097699489aaca7261_JaffaCakes118.exe	36
PID 3060 wrote to memory of 2752	3060	81ea89d6b885907097699489aaca7261_JaffaCakes118.exe	36
PID 3060 wrote to memory of 2752	3060	81ea89d6b885907097699489aaca7261_JaffaCakes118.exe	36
PID 3060 wrote to memory of 2752	3060	81ea89d6b885907097699489aaca7261_JaffaCakes118.exe	36
PID 3060 wrote to memory of 2804	3060	81ea89d6b885907097699489aaca7261_JaffaCakes118.exe	39
PID 3060 wrote to memory of 2804	3060	81ea89d6b885907097699489aaca7261_JaffaCakes118.exe	39
PID 3060 wrote to memory of 2804	3060	81ea89d6b885907097699489aaca7261_JaffaCakes118.exe	39
PID 3060 wrote to memory of 2804	3060	81ea89d6b885907097699489aaca7261_JaffaCakes118.exe	39
PID 3060 wrote to memory of 2692	3060	81ea89d6b885907097699489aaca7261_JaffaCakes118.exe	42
PID 3060 wrote to memory of 2692	3060	81ea89d6b885907097699489aaca7261_JaffaCakes118.exe	42
PID 3060 wrote to memory of 2692	3060	81ea89d6b885907097699489aaca7261_JaffaCakes118.exe	42
PID 3060 wrote to memory of 2692	3060	81ea89d6b885907097699489aaca7261_JaffaCakes118.exe	42
PID 2816 wrote to memory of 2900	2816	dxzcvuu.exe	44
PID 2816 wrote to memory of 2900	2816	dxzcvuu.exe	44
PID 2816 wrote to memory of 2900	2816	dxzcvuu.exe	44
PID 2816 wrote to memory of 2900	2816	dxzcvuu.exe	44
PID 2816 wrote to memory of 2900	2816	dxzcvuu.exe	44
PID 2816 wrote to memory of 2900	2816	dxzcvuu.exe	44

C:\Users\Admin\AppData\Local\Temp\81ea89d6b885907097699489aaca7261_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\81ea89d6b885907097699489aaca7261_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3060
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\eylaymkv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2072
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\dxzcvuu.exe" C:\Windows\SysWOW64\eylaymkv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2616
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create eylaymkv binPath= "C:\Windows\SysWOW64\eylaymkv\dxzcvuu.exe /d\"C:\Users\Admin\AppData\Local\Temp\81ea89d6b885907097699489aaca7261_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2392
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description eylaymkv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2752
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start eylaymkv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2804
- 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:2692

C:\Windows\SysWOW64\eylaymkv\dxzcvuu.exe
C:\Windows\SysWOW64\eylaymkv\dxzcvuu.exe /d"C:\Users\Admin\AppData\Local\Temp\81ea89d6b885907097699489aaca7261_JaffaCakes118.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:2900

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\dxzcvuu.exe

Filesize
10.0MB

MD5
990f641f4409e02e6593c3f8f18d788a

SHA1
35496d07baed1aedabeeebf6836a965bf12e0aa5

SHA256
4f6d4b7114d05752354bd99587aebf1a84f7301009b6720c6baf83d3760b8bb7

SHA512
d57faf07bf8fe197675b0fd3827dea776d2413cefb00d5f7f548f997817ed1543aaee007634c1a39391c778b0772533bf5fcd9e503e0079875b1a4ce073e0b74

Download Submit
memory/2816-17-0x0000000000400000-0x00000000008E9000-memory.dmp

Filesize
4.9MB

Download
memory/2900-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2900-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2900-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2900-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2900-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3060-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3060-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3060-7-0x0000000000400000-0x00000000008E9000-memory.dmp

Filesize
4.9MB

Download
memory/3060-8-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/3060-1-0x0000000000980000-0x0000000000A80000-memory.dmp

Filesize
1024KB

Download
memory/3060-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads