tofsee | 551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0

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
29-12-2024 02:08

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General

Target

JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe
Size

285KB
MD5

61f8be3ccdfa263ce084dc04f6aa0437
SHA1

f961423e1a77221b573f79c43c9a521caad6854f
SHA256

551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0
SHA512

879cf63a785814eb6644c0416bd0f5cf626368a0e2011bd83d6aeb1671dbccf14cdf4645f62db38974d60ef99f56fced8236f9716c0706f1644039539925c90a
SSDEEP

3072:q33Z+4VHtyHf1czTaE1/83RjhJN9O9S20kePH7+QtxQ640P7F1SLDVG7m5:23YMkf1c/L1/8Bj30nKi+77oDVG

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
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\hopnrloc = "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
2824	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\hopnrloc\ImagePath = "C:\\Windows\\SysWOW64\\hopnrloc\\fdnllbka.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
3028	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2812	fdnllbka.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2812 set thread context of 3028	2812	fdnllbka.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2744	sc.exe
1300	sc.exe
2692	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fdnllbka.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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2000 wrote to memory of 3036	2000	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	30
PID 2000 wrote to memory of 3036	2000	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	30
PID 2000 wrote to memory of 3036	2000	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	30
PID 2000 wrote to memory of 3036	2000	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	30
PID 2000 wrote to memory of 2340	2000	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	32
PID 2000 wrote to memory of 2340	2000	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	32
PID 2000 wrote to memory of 2340	2000	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	32
PID 2000 wrote to memory of 2340	2000	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	32
PID 2000 wrote to memory of 1300	2000	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	34
PID 2000 wrote to memory of 1300	2000	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	34
PID 2000 wrote to memory of 1300	2000	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	34
PID 2000 wrote to memory of 1300	2000	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	34
PID 2000 wrote to memory of 2692	2000	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	36
PID 2000 wrote to memory of 2692	2000	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	36
PID 2000 wrote to memory of 2692	2000	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	36
PID 2000 wrote to memory of 2692	2000	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	36
PID 2000 wrote to memory of 2744	2000	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	38
PID 2000 wrote to memory of 2744	2000	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	38
PID 2000 wrote to memory of 2744	2000	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	38
PID 2000 wrote to memory of 2744	2000	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	38
PID 2000 wrote to memory of 2824	2000	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	41
PID 2000 wrote to memory of 2824	2000	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	41
PID 2000 wrote to memory of 2824	2000	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	41
PID 2000 wrote to memory of 2824	2000	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	41
PID 2812 wrote to memory of 3028	2812	fdnllbka.exe	43
PID 2812 wrote to memory of 3028	2812	fdnllbka.exe	43
PID 2812 wrote to memory of 3028	2812	fdnllbka.exe	43
PID 2812 wrote to memory of 3028	2812	fdnllbka.exe	43
PID 2812 wrote to memory of 3028	2812	fdnllbka.exe	43
PID 2812 wrote to memory of 3028	2812	fdnllbka.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2000
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hopnrloc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3036
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fdnllbka.exe" C:\Windows\SysWOW64\hopnrloc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2340
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create hopnrloc binPath= "C:\Windows\SysWOW64\hopnrloc\fdnllbka.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1300
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description hopnrloc "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2692
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start hopnrloc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2744
- 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:2824

C:\Windows\SysWOW64\hopnrloc\fdnllbka.exe
C:\Windows\SysWOW64\hopnrloc\fdnllbka.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2812
- 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:3028

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\fdnllbka.exe

Filesize
11.4MB

MD5
3f02f87d68577a796e7bcb4be091b864

SHA1
b3e4434d680deb432c20c705023beba35b69eb21

SHA256
eb6892a93f44f877c277c1f2c494c96ce347bc843633f4c40e6bedb3f0adc3a3

SHA512
4603d1c3f913a65ab463d3e287e5d80aefb990f31a9db51081e043acb6ac9721258a2a4ca21696f56d282e2f91f4407968c2876e4398500eb7cc6386be4cb741

Download Submit
memory/2000-1-0x0000000002FD0000-0x00000000030D0000-memory.dmp

Filesize
1024KB

Download
memory/2000-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2000-4-0x0000000000400000-0x0000000002B90000-memory.dmp

Filesize
39.6MB

Download
memory/2000-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2000-9-0x0000000000400000-0x0000000002B90000-memory.dmp

Filesize
39.6MB

Download
memory/2812-17-0x0000000000400000-0x0000000002B90000-memory.dmp

Filesize
39.6MB

Download
memory/3028-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3028-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3028-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3028-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3028-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads