tofsee | 437ebedbd294676d87317e8c2f19eca989a12cfb7e2ea03824d2e01ab32512e8

Analysis

max time kernel
146s
max time network
146s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
16-12-2024 06:46

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General

Target

f7ca2b5fa8a56cdbbaf4746b4ceb1ba7_JaffaCakes118.exe
Size

12.5MB
MD5

f7ca2b5fa8a56cdbbaf4746b4ceb1ba7
SHA1

03296181495dcfaf87ccd3688e5b459955767813
SHA256

437ebedbd294676d87317e8c2f19eca989a12cfb7e2ea03824d2e01ab32512e8
SHA512

c3a9bcfc5d0c85b65b96b6c1cc6f90ada63c00d37d2a11a5b14e9b7201df13f40d0997737722e6cff2462f624f810551da895005e6534b3f3961845ef0cb7925
SSDEEP

49152:G2mNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNn:X

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\bseyhdup = "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
2828	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\bseyhdup\ImagePath = "C:\\Windows\\SysWOW64\\bseyhdup\\hxxxmdjb.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2940	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2868	hxxxmdjb.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2868 set thread context of 2940	2868	hxxxmdjb.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2764	sc.exe
2016	sc.exe
1800	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f7ca2b5fa8a56cdbbaf4746b4ceb1ba7_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	hxxxmdjb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2104 wrote to memory of 2384	2104	f7ca2b5fa8a56cdbbaf4746b4ceb1ba7_JaffaCakes118.exe	30
PID 2104 wrote to memory of 2384	2104	f7ca2b5fa8a56cdbbaf4746b4ceb1ba7_JaffaCakes118.exe	30
PID 2104 wrote to memory of 2384	2104	f7ca2b5fa8a56cdbbaf4746b4ceb1ba7_JaffaCakes118.exe	30
PID 2104 wrote to memory of 2384	2104	f7ca2b5fa8a56cdbbaf4746b4ceb1ba7_JaffaCakes118.exe	30
PID 2104 wrote to memory of 2116	2104	f7ca2b5fa8a56cdbbaf4746b4ceb1ba7_JaffaCakes118.exe	32
PID 2104 wrote to memory of 2116	2104	f7ca2b5fa8a56cdbbaf4746b4ceb1ba7_JaffaCakes118.exe	32
PID 2104 wrote to memory of 2116	2104	f7ca2b5fa8a56cdbbaf4746b4ceb1ba7_JaffaCakes118.exe	32
PID 2104 wrote to memory of 2116	2104	f7ca2b5fa8a56cdbbaf4746b4ceb1ba7_JaffaCakes118.exe	32
PID 2104 wrote to memory of 2764	2104	f7ca2b5fa8a56cdbbaf4746b4ceb1ba7_JaffaCakes118.exe	34
PID 2104 wrote to memory of 2764	2104	f7ca2b5fa8a56cdbbaf4746b4ceb1ba7_JaffaCakes118.exe	34
PID 2104 wrote to memory of 2764	2104	f7ca2b5fa8a56cdbbaf4746b4ceb1ba7_JaffaCakes118.exe	34
PID 2104 wrote to memory of 2764	2104	f7ca2b5fa8a56cdbbaf4746b4ceb1ba7_JaffaCakes118.exe	34
PID 2104 wrote to memory of 2016	2104	f7ca2b5fa8a56cdbbaf4746b4ceb1ba7_JaffaCakes118.exe	36
PID 2104 wrote to memory of 2016	2104	f7ca2b5fa8a56cdbbaf4746b4ceb1ba7_JaffaCakes118.exe	36
PID 2104 wrote to memory of 2016	2104	f7ca2b5fa8a56cdbbaf4746b4ceb1ba7_JaffaCakes118.exe	36
PID 2104 wrote to memory of 2016	2104	f7ca2b5fa8a56cdbbaf4746b4ceb1ba7_JaffaCakes118.exe	36
PID 2104 wrote to memory of 1800	2104	f7ca2b5fa8a56cdbbaf4746b4ceb1ba7_JaffaCakes118.exe	38
PID 2104 wrote to memory of 1800	2104	f7ca2b5fa8a56cdbbaf4746b4ceb1ba7_JaffaCakes118.exe	38
PID 2104 wrote to memory of 1800	2104	f7ca2b5fa8a56cdbbaf4746b4ceb1ba7_JaffaCakes118.exe	38
PID 2104 wrote to memory of 1800	2104	f7ca2b5fa8a56cdbbaf4746b4ceb1ba7_JaffaCakes118.exe	38
PID 2104 wrote to memory of 2828	2104	f7ca2b5fa8a56cdbbaf4746b4ceb1ba7_JaffaCakes118.exe	41
PID 2104 wrote to memory of 2828	2104	f7ca2b5fa8a56cdbbaf4746b4ceb1ba7_JaffaCakes118.exe	41
PID 2104 wrote to memory of 2828	2104	f7ca2b5fa8a56cdbbaf4746b4ceb1ba7_JaffaCakes118.exe	41
PID 2104 wrote to memory of 2828	2104	f7ca2b5fa8a56cdbbaf4746b4ceb1ba7_JaffaCakes118.exe	41
PID 2868 wrote to memory of 2940	2868	hxxxmdjb.exe	43
PID 2868 wrote to memory of 2940	2868	hxxxmdjb.exe	43
PID 2868 wrote to memory of 2940	2868	hxxxmdjb.exe	43
PID 2868 wrote to memory of 2940	2868	hxxxmdjb.exe	43
PID 2868 wrote to memory of 2940	2868	hxxxmdjb.exe	43
PID 2868 wrote to memory of 2940	2868	hxxxmdjb.exe	43

C:\Users\Admin\AppData\Local\Temp\f7ca2b5fa8a56cdbbaf4746b4ceb1ba7_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f7ca2b5fa8a56cdbbaf4746b4ceb1ba7_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2104
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bseyhdup\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2384
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\hxxxmdjb.exe" C:\Windows\SysWOW64\bseyhdup\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2116
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bseyhdup binPath= "C:\Windows\SysWOW64\bseyhdup\hxxxmdjb.exe /d\"C:\Users\Admin\AppData\Local\Temp\f7ca2b5fa8a56cdbbaf4746b4ceb1ba7_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2764
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bseyhdup "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2016
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bseyhdup
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1800
- 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:2828

C:\Windows\SysWOW64\bseyhdup\hxxxmdjb.exe
C:\Windows\SysWOW64\bseyhdup\hxxxmdjb.exe /d"C:\Users\Admin\AppData\Local\Temp\f7ca2b5fa8a56cdbbaf4746b4ceb1ba7_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2868
- 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:2940

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\hxxxmdjb.exe

Filesize
15.0MB

MD5
137a597aff566daf078470bc4af338dc

SHA1
f16139b3d4c1e8afc1424def746766d07250e9cc

SHA256
b97c69ee041446ee1178b846b0f6f89d9a3cb0ec82f7c7c0e4e97f23d3d289d9

SHA512
eb4ac3d8ad40526db6e949f99080d11e39fc3eb99f3a31b021db7c9a88ba4c74c3d438786cf4e0f11df3a1fcf52efb2bdac000929c7eafc6b79cf4294659498f

Download Submit
memory/2104-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2104-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2104-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2104-11-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2104-10-0x0000000000A30000-0x0000000000B30000-memory.dmp

Filesize
1024KB

Download
memory/2104-1-0x0000000000A30000-0x0000000000B30000-memory.dmp

Filesize
1024KB

Download
memory/2104-8-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/2868-17-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/2940-19-0x0000000000100000-0x0000000000115000-memory.dmp

Filesize
84KB

Download
memory/2940-18-0x0000000000100000-0x0000000000115000-memory.dmp

Filesize
84KB

Download
memory/2940-15-0x0000000000100000-0x0000000000115000-memory.dmp

Filesize
84KB

Download
memory/2940-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2940-12-0x0000000000100000-0x0000000000115000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads