tofsee | e52157c37dbd0ab18fc824ce8ddd986264d6366b6bea691624961fbfc4893b69

Analysis

max time kernel
146s
max time network
146s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
18-08-2024 15:59

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General

Target

a74b062af7d84cd58eb2edb84bdda27f_JaffaCakes118.exe
Size

11.6MB
MD5

a74b062af7d84cd58eb2edb84bdda27f
SHA1

49883834e828cf4020279c8253c4780f078dd9c9
SHA256

e52157c37dbd0ab18fc824ce8ddd986264d6366b6bea691624961fbfc4893b69
SHA512

dedca1622ed514fa840e0f1c066c5bed9256a8112d3eba3eab82458d19da97b2c7625164179f8b6b82bdeb087d6be64b103665469a4e55dbaa3a64efd455e2b0
SSDEEP

24576:fW93OTI1/tI1/tI1/tI1/tI1/tI1/tI1/tI1/tI1/tI1/tI1/tI1/tI1/tI1/tIZ:u

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\fmyvtwtu = "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
2868	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\fmyvtwtu\ImagePath = "C:\\Windows\\SysWOW64\\fmyvtwtu\\fibjhjrb.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2304	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2732	fibjhjrb.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2732 set thread context of 2304	2732	fibjhjrb.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2788	sc.exe
2644	sc.exe
2740	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	a74b062af7d84cd58eb2edb84bdda27f_JaffaCakes118.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	sc.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fibjhjrb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2060 wrote to memory of 2932	2060	a74b062af7d84cd58eb2edb84bdda27f_JaffaCakes118.exe	30
PID 2060 wrote to memory of 2932	2060	a74b062af7d84cd58eb2edb84bdda27f_JaffaCakes118.exe	30
PID 2060 wrote to memory of 2932	2060	a74b062af7d84cd58eb2edb84bdda27f_JaffaCakes118.exe	30
PID 2060 wrote to memory of 2932	2060	a74b062af7d84cd58eb2edb84bdda27f_JaffaCakes118.exe	30
PID 2060 wrote to memory of 2416	2060	a74b062af7d84cd58eb2edb84bdda27f_JaffaCakes118.exe	33
PID 2060 wrote to memory of 2416	2060	a74b062af7d84cd58eb2edb84bdda27f_JaffaCakes118.exe	33
PID 2060 wrote to memory of 2416	2060	a74b062af7d84cd58eb2edb84bdda27f_JaffaCakes118.exe	33
PID 2060 wrote to memory of 2416	2060	a74b062af7d84cd58eb2edb84bdda27f_JaffaCakes118.exe	33
PID 2060 wrote to memory of 2788	2060	a74b062af7d84cd58eb2edb84bdda27f_JaffaCakes118.exe	35
PID 2060 wrote to memory of 2788	2060	a74b062af7d84cd58eb2edb84bdda27f_JaffaCakes118.exe	35
PID 2060 wrote to memory of 2788	2060	a74b062af7d84cd58eb2edb84bdda27f_JaffaCakes118.exe	35
PID 2060 wrote to memory of 2788	2060	a74b062af7d84cd58eb2edb84bdda27f_JaffaCakes118.exe	35
PID 2060 wrote to memory of 2644	2060	a74b062af7d84cd58eb2edb84bdda27f_JaffaCakes118.exe	37
PID 2060 wrote to memory of 2644	2060	a74b062af7d84cd58eb2edb84bdda27f_JaffaCakes118.exe	37
PID 2060 wrote to memory of 2644	2060	a74b062af7d84cd58eb2edb84bdda27f_JaffaCakes118.exe	37
PID 2060 wrote to memory of 2644	2060	a74b062af7d84cd58eb2edb84bdda27f_JaffaCakes118.exe	37
PID 2060 wrote to memory of 2740	2060	a74b062af7d84cd58eb2edb84bdda27f_JaffaCakes118.exe	39
PID 2060 wrote to memory of 2740	2060	a74b062af7d84cd58eb2edb84bdda27f_JaffaCakes118.exe	39
PID 2060 wrote to memory of 2740	2060	a74b062af7d84cd58eb2edb84bdda27f_JaffaCakes118.exe	39
PID 2060 wrote to memory of 2740	2060	a74b062af7d84cd58eb2edb84bdda27f_JaffaCakes118.exe	39
PID 2060 wrote to memory of 2868	2060	a74b062af7d84cd58eb2edb84bdda27f_JaffaCakes118.exe	42
PID 2060 wrote to memory of 2868	2060	a74b062af7d84cd58eb2edb84bdda27f_JaffaCakes118.exe	42
PID 2060 wrote to memory of 2868	2060	a74b062af7d84cd58eb2edb84bdda27f_JaffaCakes118.exe	42
PID 2060 wrote to memory of 2868	2060	a74b062af7d84cd58eb2edb84bdda27f_JaffaCakes118.exe	42
PID 2732 wrote to memory of 2304	2732	fibjhjrb.exe	44
PID 2732 wrote to memory of 2304	2732	fibjhjrb.exe	44
PID 2732 wrote to memory of 2304	2732	fibjhjrb.exe	44
PID 2732 wrote to memory of 2304	2732	fibjhjrb.exe	44
PID 2732 wrote to memory of 2304	2732	fibjhjrb.exe	44
PID 2732 wrote to memory of 2304	2732	fibjhjrb.exe	44

C:\Users\Admin\AppData\Local\Temp\a74b062af7d84cd58eb2edb84bdda27f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a74b062af7d84cd58eb2edb84bdda27f_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2060
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fmyvtwtu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2932
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fibjhjrb.exe" C:\Windows\SysWOW64\fmyvtwtu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2416
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fmyvtwtu binPath= "C:\Windows\SysWOW64\fmyvtwtu\fibjhjrb.exe /d\"C:\Users\Admin\AppData\Local\Temp\a74b062af7d84cd58eb2edb84bdda27f_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2788
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fmyvtwtu "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2644
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fmyvtwtu
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2740
- 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:2868

C:\Windows\SysWOW64\fmyvtwtu\fibjhjrb.exe
C:\Windows\SysWOW64\fmyvtwtu\fibjhjrb.exe /d"C:\Users\Admin\AppData\Local\Temp\a74b062af7d84cd58eb2edb84bdda27f_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2732
- 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:2304

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\fibjhjrb.exe

Filesize
14.0MB

MD5
ebc683f6378385b4eb31dcd5ecd957e6

SHA1
7d28af45687e543260506ed08e5a6906fb1cb38e

SHA256
f59d237bd3e086b1915df8cd7d2a473a2f398873a0d5cc64f974d706e0f0dbd5

SHA512
df97975eae15b1a66a90824a42325bce4af74bb3078e307a98e7512d29283a399f3f3a7e002985f0b70896e176234d0a763e3ba2ce711ce787d1833087664e3f

Download Submit
memory/2060-8-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download
memory/2060-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2060-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2060-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2060-9-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2060-1-0x00000000004E0000-0x00000000005E0000-memory.dmp

Filesize
1024KB

Download
memory/2304-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2304-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2304-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2304-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2304-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2732-15-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads