tofsee | aa5b8ec889dd4d8364e6f0e2b851e0a4c9100db76c2b8e3b593625d0dac2b3aa

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
12-10-2024 14:29

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General

Target

3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe
Size

10.3MB
MD5

3a8519e4f55bc93a4ffe59460d70499f
SHA1

85b43b33f7ca5f18b1e54da091a29a51680eb273
SHA256

aa5b8ec889dd4d8364e6f0e2b851e0a4c9100db76c2b8e3b593625d0dac2b3aa
SHA512

0360bb359c66cba72e18898900e81bf9586b6cc166fe00465e7f3edc01d74ec00cda31d24dbde8332c4b67b23a6cd68d314ac19217bd795bd8dacac887510a8e
SSDEEP

49152:S88888888888888888888888888888888888888888888888888888888888888I:

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\feksmlwc = "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
2848	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\feksmlwc\ImagePath = "C:\\Windows\\SysWOW64\\feksmlwc\\eiptvyoa.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2956	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2732	eiptvyoa.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2732 set thread context of 2956	2732	eiptvyoa.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
3012	sc.exe
2868	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3a8519e4f55bc93a4ffe59460d70499f_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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	eiptvyoa.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2104 wrote to memory of 756	2104	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	30
PID 2104 wrote to memory of 756	2104	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	30
PID 2104 wrote to memory of 756	2104	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	30
PID 2104 wrote to memory of 756	2104	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	30
PID 2104 wrote to memory of 2804	2104	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	32
PID 2104 wrote to memory of 2804	2104	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	32
PID 2104 wrote to memory of 2804	2104	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	32
PID 2104 wrote to memory of 2804	2104	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	32
PID 2104 wrote to memory of 3012	2104	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	34
PID 2104 wrote to memory of 3012	2104	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	34
PID 2104 wrote to memory of 3012	2104	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	34
PID 2104 wrote to memory of 3012	2104	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	34
PID 2104 wrote to memory of 2868	2104	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	36
PID 2104 wrote to memory of 2868	2104	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	36
PID 2104 wrote to memory of 2868	2104	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	36
PID 2104 wrote to memory of 2868	2104	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	36
PID 2104 wrote to memory of 2996	2104	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	38
PID 2104 wrote to memory of 2996	2104	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	38
PID 2104 wrote to memory of 2996	2104	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	38
PID 2104 wrote to memory of 2996	2104	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	38
PID 2104 wrote to memory of 2848	2104	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	40
PID 2104 wrote to memory of 2848	2104	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	40
PID 2104 wrote to memory of 2848	2104	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	40
PID 2104 wrote to memory of 2848	2104	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	40
PID 2732 wrote to memory of 2956	2732	eiptvyoa.exe	43
PID 2732 wrote to memory of 2956	2732	eiptvyoa.exe	43
PID 2732 wrote to memory of 2956	2732	eiptvyoa.exe	43
PID 2732 wrote to memory of 2956	2732	eiptvyoa.exe	43
PID 2732 wrote to memory of 2956	2732	eiptvyoa.exe	43
PID 2732 wrote to memory of 2956	2732	eiptvyoa.exe	43

C:\Users\Admin\AppData\Local\Temp\3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\3a8519e4f55bc93a4ffe59460d70499f_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\feksmlwc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:756
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\eiptvyoa.exe" C:\Windows\SysWOW64\feksmlwc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2804
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create feksmlwc binPath= "C:\Windows\SysWOW64\feksmlwc\eiptvyoa.exe /d\"C:\Users\Admin\AppData\Local\Temp\3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3012
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description feksmlwc "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2868
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start feksmlwc
  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:2848

C:\Windows\SysWOW64\feksmlwc\eiptvyoa.exe
C:\Windows\SysWOW64\feksmlwc\eiptvyoa.exe /d"C:\Users\Admin\AppData\Local\Temp\3a8519e4f55bc93a4ffe59460d70499f_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:2956

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\eiptvyoa.exe

Filesize
14.0MB

MD5
e97f7a561ce8cbe8ead72c20cec5d20d

SHA1
286133baa84657cb67483bdf154c6e5c87a6ea33

SHA256
14ad09f21db399940392beb4948f02268bbc3eb92c4b1d617e4d8e3dcc96eb72

SHA512
fc91fb3b9e449a6b5ee7af36274b258c6d5e9daec78537c1d44a19577ea45e10b4f4ea6e810427f649b6b56cfd9329ed241fb31aab5c79799742ca6a8ddd49cd

Download Submit
memory/2104-6-0x0000000000400000-0x0000000002C68000-memory.dmp

Filesize
40.4MB

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

Filesize
84KB

Download
memory/2104-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2104-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2104-9-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2104-1-0x0000000002E30000-0x0000000002F30000-memory.dmp

Filesize
1024KB

Download
memory/2732-15-0x0000000000400000-0x0000000002C68000-memory.dmp

Filesize
40.4MB

Download
memory/2956-11-0x0000000000120000-0x0000000000135000-memory.dmp

Filesize
84KB

Download
memory/2956-14-0x0000000000120000-0x0000000000135000-memory.dmp

Filesize
84KB

Download
memory/2956-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2956-17-0x0000000000120000-0x0000000000135000-memory.dmp

Filesize
84KB

Download
memory/2956-18-0x0000000000120000-0x0000000000135000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads