tofsee | de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff

Analysis

max time kernel
147s
max time network
147s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
29-12-2024 22:18

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General

Target

JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe
Size

304KB
MD5

22a413c15a4a559e00bb46a7ea9c8328
SHA1

75e0330c2ddced4d2f752709e2f2733f2557f922
SHA256

de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff
SHA512

fca580091b1b058c3602a92d4645d206a323300e10664ec7085ef4270c269d88d5442770cafa6886aedc8ee6472959f3f27090e5ac6d8a0759bc1d9e5de3c7bf
SSDEEP

6144:VTjfugLvStP73OTkf87CjHIWRLIIL6MCOhxxFeTr/ekI:VrrStakfKGHP/L6+zxF6L

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\fzkiaaqz = "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
2908	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\fzkiaaqz\ImagePath = "C:\\Windows\\SysWOW64\\fzkiaaqz\\cssshyew.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
1276	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2800	cssshyew.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2800 set thread context of 1276	2800	cssshyew.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
1780	sc.exe
2208	sc.exe
2640	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cssshyew.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1768 wrote to memory of 1256	1768	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	31
PID 1768 wrote to memory of 1256	1768	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	31
PID 1768 wrote to memory of 1256	1768	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	31
PID 1768 wrote to memory of 1256	1768	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	31
PID 1768 wrote to memory of 2244	1768	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	33
PID 1768 wrote to memory of 2244	1768	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	33
PID 1768 wrote to memory of 2244	1768	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	33
PID 1768 wrote to memory of 2244	1768	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	33
PID 1768 wrote to memory of 1780	1768	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	35
PID 1768 wrote to memory of 1780	1768	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	35
PID 1768 wrote to memory of 1780	1768	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	35
PID 1768 wrote to memory of 1780	1768	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	35
PID 1768 wrote to memory of 2208	1768	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	37
PID 1768 wrote to memory of 2208	1768	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	37
PID 1768 wrote to memory of 2208	1768	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	37
PID 1768 wrote to memory of 2208	1768	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	37
PID 1768 wrote to memory of 2640	1768	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	39
PID 1768 wrote to memory of 2640	1768	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	39
PID 1768 wrote to memory of 2640	1768	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	39
PID 1768 wrote to memory of 2640	1768	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	39
PID 1768 wrote to memory of 2908	1768	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	42
PID 1768 wrote to memory of 2908	1768	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	42
PID 1768 wrote to memory of 2908	1768	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	42
PID 1768 wrote to memory of 2908	1768	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	42
PID 2800 wrote to memory of 1276	2800	cssshyew.exe	44
PID 2800 wrote to memory of 1276	2800	cssshyew.exe	44
PID 2800 wrote to memory of 1276	2800	cssshyew.exe	44
PID 2800 wrote to memory of 1276	2800	cssshyew.exe	44
PID 2800 wrote to memory of 1276	2800	cssshyew.exe	44
PID 2800 wrote to memory of 1276	2800	cssshyew.exe	44

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1768
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fzkiaaqz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1256
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cssshyew.exe" C:\Windows\SysWOW64\fzkiaaqz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2244
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fzkiaaqz binPath= "C:\Windows\SysWOW64\fzkiaaqz\cssshyew.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1780
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fzkiaaqz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2208
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fzkiaaqz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2640
- 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:2908

C:\Windows\SysWOW64\fzkiaaqz\cssshyew.exe
C:\Windows\SysWOW64\fzkiaaqz\cssshyew.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2800
- 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:1276

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\cssshyew.exe

Filesize
10.8MB

MD5
c2ae335f859d8be9d9dc5369f2d38ce3

SHA1
fdb750fe8461bb372c761bc3ab057899080b48f8

SHA256
78904dbff2e618d5a3024d50cfc6b1c4ecace0ad65a9c6674b931459e052fe44

SHA512
28ab43bc75525a6e2bb5d86f3e9e1caad9db3ece2b0a793c9a5c971cfb7549b5fdf1077045143b3b6fd91f20bef24af749748906798600ef719fccc0db84f0e6

Download Submit
memory/1276-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1276-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1276-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1276-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1276-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1768-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1768-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1768-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1768-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1768-8-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/1768-1-0x0000000000510000-0x0000000000610000-memory.dmp

Filesize
1024KB

Download
memory/2800-16-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download

Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads