tofsee | 59525627bd56344ad6a2096e0ececd82ea8f6d7f0501c2baa081c00374b9bbba

Analysis

max time kernel
145s
max time network
145s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
20-10-2024 10:38

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General

Target

61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe
Size

14.8MB
MD5

61cce2104b866e7c94f675006355ee04
SHA1

2aad7d1cff84cd32f59bfdb6eceed80e79eae3de
SHA256

59525627bd56344ad6a2096e0ececd82ea8f6d7f0501c2baa081c00374b9bbba
SHA512

70cfd5beadff191513dab60af02569f4578bd8ae3af138a0d4a782ff3be47ef9a87eb08dbedfdb8d81500aef32d89507f2e775510644839bcb476015c8e713ce
SSDEEP

24576:YMOfbSPNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN7:E

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

defeatwax.ru

refabyd.info

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan 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\itflvxkh = "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
2844	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\itflvxkh\ImagePath = "C:\\Windows\\SysWOW64\\itflvxkh\\nuxvwwma.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2712	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2120	nuxvwwma.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2120 set thread context of 2712	2120	nuxvwwma.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
1980	sc.exe
2880	sc.exe
2240	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe
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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nuxvwwma.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2496 wrote to memory of 3020	2496	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	30
PID 2496 wrote to memory of 3020	2496	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	30
PID 2496 wrote to memory of 3020	2496	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	30
PID 2496 wrote to memory of 3020	2496	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	30
PID 2496 wrote to memory of 2380	2496	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	32
PID 2496 wrote to memory of 2380	2496	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	32
PID 2496 wrote to memory of 2380	2496	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	32
PID 2496 wrote to memory of 2380	2496	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	32
PID 2496 wrote to memory of 1980	2496	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	34
PID 2496 wrote to memory of 1980	2496	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	34
PID 2496 wrote to memory of 1980	2496	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	34
PID 2496 wrote to memory of 1980	2496	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	34
PID 2496 wrote to memory of 2880	2496	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	36
PID 2496 wrote to memory of 2880	2496	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	36
PID 2496 wrote to memory of 2880	2496	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	36
PID 2496 wrote to memory of 2880	2496	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	36
PID 2496 wrote to memory of 2240	2496	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	38
PID 2496 wrote to memory of 2240	2496	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	38
PID 2496 wrote to memory of 2240	2496	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	38
PID 2496 wrote to memory of 2240	2496	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	38
PID 2496 wrote to memory of 2844	2496	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	41
PID 2496 wrote to memory of 2844	2496	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	41
PID 2496 wrote to memory of 2844	2496	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	41
PID 2496 wrote to memory of 2844	2496	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	41
PID 2120 wrote to memory of 2712	2120	nuxvwwma.exe	43
PID 2120 wrote to memory of 2712	2120	nuxvwwma.exe	43
PID 2120 wrote to memory of 2712	2120	nuxvwwma.exe	43
PID 2120 wrote to memory of 2712	2120	nuxvwwma.exe	43
PID 2120 wrote to memory of 2712	2120	nuxvwwma.exe	43
PID 2120 wrote to memory of 2712	2120	nuxvwwma.exe	43

C:\Users\Admin\AppData\Local\Temp\61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2496
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\itflvxkh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3020
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nuxvwwma.exe" C:\Windows\SysWOW64\itflvxkh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2380
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create itflvxkh binPath= "C:\Windows\SysWOW64\itflvxkh\nuxvwwma.exe /d\"C:\Users\Admin\AppData\Local\Temp\61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1980
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description itflvxkh "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2880
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start itflvxkh
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2240
- 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:2844

C:\Windows\SysWOW64\itflvxkh\nuxvwwma.exe
C:\Windows\SysWOW64\itflvxkh\nuxvwwma.exe /d"C:\Users\Admin\AppData\Local\Temp\61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2120
- 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:2712

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\nuxvwwma.exe

Filesize
13.7MB

MD5
55c457e8f25e253a6917129d39cf6faa

SHA1
f7a25c3c7a2bc096ac6027bcce3a6c7439dc1613

SHA256
0914e483545579d38ac1558ad4445442f3662bf0ebfed931914313a559407486

SHA512
c4d3f0e607347ee3d5105adcce7706651bcac8fd13719a3a998abcb5d3f20f06a41fea08fd0f6c149c3af1bbced3dfa8c42bee989687d38cfb5084196c89bfd3

Download Submit
memory/2120-16-0x0000000000400000-0x0000000002B8F000-memory.dmp

Filesize
39.6MB

Download
memory/2496-8-0x0000000000400000-0x0000000002B8F000-memory.dmp

Filesize
39.6MB

Download
memory/2496-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2496-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2496-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2496-1-0x0000000002C30000-0x0000000002D30000-memory.dmp

Filesize
1024KB

Download
memory/2496-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2712-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2712-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2712-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2712-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2712-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads