tofsee | 37ed93bc02236b725a6b5fbdf69f93d6ac108eb9df7c2e56646cd6983010aba4

Analysis

max time kernel
146s
max time network
145s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
31-12-2024 19:38

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General

Target

JaffaCakes118_325ada9fdaea31bac908bc3a142ac4a9.exe
Size

13.7MB
MD5

325ada9fdaea31bac908bc3a142ac4a9
SHA1

c1a64581187c976c14612ad53601303f4b21cdbf
SHA256

37ed93bc02236b725a6b5fbdf69f93d6ac108eb9df7c2e56646cd6983010aba4
SHA512

c94f335bcf1533469037b0d0864d79df635c8980106b1862c267c247686ad5a62ce1a775d33d9b430fd3d1100acc9663e71ed55afcd8eae6cb05ae57826d3b69
SSDEEP

12288:lQeoegEG/Rl1M7jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjn:lQeGX1M

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\jwrtnvy = "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
2808	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\jwrtnvy\ImagePath = "C:\\Windows\\SysWOW64\\jwrtnvy\\rdyvcbbp.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2668	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1004	rdyvcbbp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1004 set thread context of 2668	1004	rdyvcbbp.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2780	sc.exe
2752	sc.exe
2996	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rdyvcbbp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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	JaffaCakes118_325ada9fdaea31bac908bc3a142ac4a9.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 2520 wrote to memory of 2508	2520	JaffaCakes118_325ada9fdaea31bac908bc3a142ac4a9.exe	30
PID 2520 wrote to memory of 2508	2520	JaffaCakes118_325ada9fdaea31bac908bc3a142ac4a9.exe	30
PID 2520 wrote to memory of 2508	2520	JaffaCakes118_325ada9fdaea31bac908bc3a142ac4a9.exe	30
PID 2520 wrote to memory of 2508	2520	JaffaCakes118_325ada9fdaea31bac908bc3a142ac4a9.exe	30
PID 2520 wrote to memory of 2868	2520	JaffaCakes118_325ada9fdaea31bac908bc3a142ac4a9.exe	32
PID 2520 wrote to memory of 2868	2520	JaffaCakes118_325ada9fdaea31bac908bc3a142ac4a9.exe	32
PID 2520 wrote to memory of 2868	2520	JaffaCakes118_325ada9fdaea31bac908bc3a142ac4a9.exe	32
PID 2520 wrote to memory of 2868	2520	JaffaCakes118_325ada9fdaea31bac908bc3a142ac4a9.exe	32
PID 2520 wrote to memory of 2780	2520	JaffaCakes118_325ada9fdaea31bac908bc3a142ac4a9.exe	34
PID 2520 wrote to memory of 2780	2520	JaffaCakes118_325ada9fdaea31bac908bc3a142ac4a9.exe	34
PID 2520 wrote to memory of 2780	2520	JaffaCakes118_325ada9fdaea31bac908bc3a142ac4a9.exe	34
PID 2520 wrote to memory of 2780	2520	JaffaCakes118_325ada9fdaea31bac908bc3a142ac4a9.exe	34
PID 2520 wrote to memory of 2752	2520	JaffaCakes118_325ada9fdaea31bac908bc3a142ac4a9.exe	36
PID 2520 wrote to memory of 2752	2520	JaffaCakes118_325ada9fdaea31bac908bc3a142ac4a9.exe	36
PID 2520 wrote to memory of 2752	2520	JaffaCakes118_325ada9fdaea31bac908bc3a142ac4a9.exe	36
PID 2520 wrote to memory of 2752	2520	JaffaCakes118_325ada9fdaea31bac908bc3a142ac4a9.exe	36
PID 2520 wrote to memory of 2996	2520	JaffaCakes118_325ada9fdaea31bac908bc3a142ac4a9.exe	38
PID 2520 wrote to memory of 2996	2520	JaffaCakes118_325ada9fdaea31bac908bc3a142ac4a9.exe	38
PID 2520 wrote to memory of 2996	2520	JaffaCakes118_325ada9fdaea31bac908bc3a142ac4a9.exe	38
PID 2520 wrote to memory of 2996	2520	JaffaCakes118_325ada9fdaea31bac908bc3a142ac4a9.exe	38
PID 2520 wrote to memory of 2808	2520	JaffaCakes118_325ada9fdaea31bac908bc3a142ac4a9.exe	41
PID 2520 wrote to memory of 2808	2520	JaffaCakes118_325ada9fdaea31bac908bc3a142ac4a9.exe	41
PID 2520 wrote to memory of 2808	2520	JaffaCakes118_325ada9fdaea31bac908bc3a142ac4a9.exe	41
PID 2520 wrote to memory of 2808	2520	JaffaCakes118_325ada9fdaea31bac908bc3a142ac4a9.exe	41
PID 1004 wrote to memory of 2668	1004	rdyvcbbp.exe	43
PID 1004 wrote to memory of 2668	1004	rdyvcbbp.exe	43
PID 1004 wrote to memory of 2668	1004	rdyvcbbp.exe	43
PID 1004 wrote to memory of 2668	1004	rdyvcbbp.exe	43
PID 1004 wrote to memory of 2668	1004	rdyvcbbp.exe	43
PID 1004 wrote to memory of 2668	1004	rdyvcbbp.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_325ada9fdaea31bac908bc3a142ac4a9.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_325ada9fdaea31bac908bc3a142ac4a9.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2520
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jwrtnvy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2508
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rdyvcbbp.exe" C:\Windows\SysWOW64\jwrtnvy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2868
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create jwrtnvy binPath= "C:\Windows\SysWOW64\jwrtnvy\rdyvcbbp.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_325ada9fdaea31bac908bc3a142ac4a9.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2780
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description jwrtnvy "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 jwrtnvy
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2996
- 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:2808

C:\Windows\SysWOW64\jwrtnvy\rdyvcbbp.exe
C:\Windows\SysWOW64\jwrtnvy\rdyvcbbp.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_325ada9fdaea31bac908bc3a142ac4a9.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1004
- 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:2668

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\rdyvcbbp.exe

Filesize
11.8MB

MD5
c7d54346062a0b114e7e99d4b205d785

SHA1
0f28c955632d206bdfdc825c3c5120815e39ab9a

SHA256
e8d7aaf589ec5208f5d7194ba23378e00b3ed3fb7c84ffd50b34df8e0a9c5d56

SHA512
a0910eebcd7a3c96dcd4a9a079725be04ad6e3b5f9c680053917465ff825e59e5459d9f62bca06f050f626c917032ec41a9d995528f6b3f194cae051e3f49c6b

Download Submit
memory/1004-16-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/2520-8-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/2520-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2520-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2520-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2520-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2520-1-0x0000000000A20000-0x0000000000B20000-memory.dmp

Filesize
1024KB

Download
memory/2668-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2668-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2668-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2668-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2668-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads