tofsee | 451567a8338f0ac84adaf764b66486df72cc7af2c976a421c6d5e89db0d51d86

Analysis

max time kernel
145s
max time network
145s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
12-10-2024 09:26

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General

Target

39503374e60c2654abb01f802ad48002_JaffaCakes118.exe
Size

11.5MB
MD5

39503374e60c2654abb01f802ad48002
SHA1

27c79b468c04e3d97f352344455c62ff9d8cc531
SHA256

451567a8338f0ac84adaf764b66486df72cc7af2c976a421c6d5e89db0d51d86
SHA512

ca5442700a4b4446b2392debc2ab8d852d84a66098a7abd77266e0757ecdb09bc4f82000f2a159bdc9acafb6afc5ffc000d445f009168f41965f43829329818f
SSDEEP

6144:5Nytwy0vP4gE/r4JSzyEc9T3M+0snM6rSuB:5I+XvP4Z4JSzyEg7r0snNB

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\lsdwncej = "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
2804	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\lsdwncej\ImagePath = "C:\\Windows\\SysWOW64\\lsdwncej\\htfnnynv.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2788	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2756	htfnnynv.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2756 set thread context of 2788	2756	htfnnynv.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2732	sc.exe
2096	sc.exe
1884	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	htfnnynv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	39503374e60c2654abb01f802ad48002_JaffaCakes118.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2888 wrote to memory of 2328	2888	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	31
PID 2888 wrote to memory of 2328	2888	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	31
PID 2888 wrote to memory of 2328	2888	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	31
PID 2888 wrote to memory of 2328	2888	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	31
PID 2888 wrote to memory of 2324	2888	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	33
PID 2888 wrote to memory of 2324	2888	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	33
PID 2888 wrote to memory of 2324	2888	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	33
PID 2888 wrote to memory of 2324	2888	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	33
PID 2888 wrote to memory of 2732	2888	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	35
PID 2888 wrote to memory of 2732	2888	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	35
PID 2888 wrote to memory of 2732	2888	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	35
PID 2888 wrote to memory of 2732	2888	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	35
PID 2888 wrote to memory of 2096	2888	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	37
PID 2888 wrote to memory of 2096	2888	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	37
PID 2888 wrote to memory of 2096	2888	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	37
PID 2888 wrote to memory of 2096	2888	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	37
PID 2888 wrote to memory of 1884	2888	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	39
PID 2888 wrote to memory of 1884	2888	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	39
PID 2888 wrote to memory of 1884	2888	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	39
PID 2888 wrote to memory of 1884	2888	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	39
PID 2888 wrote to memory of 2804	2888	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	42
PID 2888 wrote to memory of 2804	2888	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	42
PID 2888 wrote to memory of 2804	2888	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	42
PID 2888 wrote to memory of 2804	2888	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	42
PID 2756 wrote to memory of 2788	2756	htfnnynv.exe	44
PID 2756 wrote to memory of 2788	2756	htfnnynv.exe	44
PID 2756 wrote to memory of 2788	2756	htfnnynv.exe	44
PID 2756 wrote to memory of 2788	2756	htfnnynv.exe	44
PID 2756 wrote to memory of 2788	2756	htfnnynv.exe	44
PID 2756 wrote to memory of 2788	2756	htfnnynv.exe	44

C:\Users\Admin\AppData\Local\Temp\39503374e60c2654abb01f802ad48002_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\39503374e60c2654abb01f802ad48002_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2888
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lsdwncej\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2328
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\htfnnynv.exe" C:\Windows\SysWOW64\lsdwncej\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2324
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create lsdwncej binPath= "C:\Windows\SysWOW64\lsdwncej\htfnnynv.exe /d\"C:\Users\Admin\AppData\Local\Temp\39503374e60c2654abb01f802ad48002_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2732
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description lsdwncej "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2096
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start lsdwncej
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1884
- 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:2804

C:\Windows\SysWOW64\lsdwncej\htfnnynv.exe
C:\Windows\SysWOW64\lsdwncej\htfnnynv.exe /d"C:\Users\Admin\AppData\Local\Temp\39503374e60c2654abb01f802ad48002_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2756
- 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: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

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\htfnnynv.exe

Filesize
13.4MB

MD5
e685f69ceecca753b1c836ed4972517a

SHA1
0da4552e4976026fa7517e66847703738fb894af

SHA256
417049b58c7a159a70a090f977e3956b05dc5e93a29a6729dc43b52149645ff8

SHA512
14e8cb5b3a08daecfd4c3fb7d109f6da451f69b7d86de65a22dab50d182edf5a677adaf5a991f3cf3fed577082a65248e345c0826ddac72db7080a88f30dd9fe

Download Submit
memory/2756-15-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

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

Filesize
84KB

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

Filesize
84KB

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

Filesize
4KB

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

Filesize
84KB

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

Filesize
84KB

Download
memory/2888-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2888-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2888-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2888-8-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/2888-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2888-1-0x0000000000920000-0x0000000000A20000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads