tofsee | 807c0b3795e7c29931bfdec2779743155c676500793dee9fe7412fc9f1892552

General

Target

207f80d8aecae948ddfcecd954a9f645_JaffaCakes118.exe
Size

12.4MB
MD5

207f80d8aecae948ddfcecd954a9f645
SHA1

6805e7fa9d8dd810ba2a2e017b9a1c46fb5164e9
SHA256

807c0b3795e7c29931bfdec2779743155c676500793dee9fe7412fc9f1892552
SHA512

ef86d35a0b7034ceda9a32c00a68dde04ea9f53a8a3e1f26bf0a677fbb058c62b4f8dac86f24ba290a3cc34683bb4b282151e8887dc4744d8c29a109a6f834ee
SSDEEP

24576:HUqa71YB5DHlommmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmG:HF15

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

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

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\pebcdufg = "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

Processes:

netsh.exe

pid process

2548 netsh.exe

pid	process
2548	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\pebcdufg\ImagePath = "C:\\Windows\\SysWOW64\\pebcdufg\\ytdguffn.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2704 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

ytdguffn.exe

pid process

2808 ytdguffn.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

ytdguffn.exe

description pid process target process

PID 2808 set thread context of 2704 2808 ytdguffn.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

2136 sc.exe
2748 sc.exe
2736 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2704	svchost.exe

pid	process
2808	ytdguffn.exe

description	pid	process	target process
PID 2808 set thread context of 2704	2808	ytdguffn.exe	svchost.exe

pid	process
2136	sc.exe
2748	sc.exe
2736	sc.exe

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

Processes:

netsh.exe

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

Processes:

sc.exenetsh.exesc.exesc.exeytdguffn.exesvchost.exe207f80d8aecae948ddfcecd954a9f645_JaffaCakes118.execmd.execmd.exe

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ytdguffn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	207f80d8aecae948ddfcecd954a9f645_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

207f80d8aecae948ddfcecd954a9f645_JaffaCakes118.exeytdguffn.exe

description	pid	process	target process
PID 2468 wrote to memory of 1028	2468	207f80d8aecae948ddfcecd954a9f645_JaffaCakes118.exe	cmd.exe
PID 2468 wrote to memory of 1028	2468	207f80d8aecae948ddfcecd954a9f645_JaffaCakes118.exe	cmd.exe
PID 2468 wrote to memory of 1028	2468	207f80d8aecae948ddfcecd954a9f645_JaffaCakes118.exe	cmd.exe
PID 2468 wrote to memory of 1028	2468	207f80d8aecae948ddfcecd954a9f645_JaffaCakes118.exe	cmd.exe
PID 2468 wrote to memory of 2096	2468	207f80d8aecae948ddfcecd954a9f645_JaffaCakes118.exe	cmd.exe
PID 2468 wrote to memory of 2096	2468	207f80d8aecae948ddfcecd954a9f645_JaffaCakes118.exe	cmd.exe
PID 2468 wrote to memory of 2096	2468	207f80d8aecae948ddfcecd954a9f645_JaffaCakes118.exe	cmd.exe
PID 2468 wrote to memory of 2096	2468	207f80d8aecae948ddfcecd954a9f645_JaffaCakes118.exe	cmd.exe
PID 2468 wrote to memory of 2136	2468	207f80d8aecae948ddfcecd954a9f645_JaffaCakes118.exe	sc.exe
PID 2468 wrote to memory of 2136	2468	207f80d8aecae948ddfcecd954a9f645_JaffaCakes118.exe	sc.exe
PID 2468 wrote to memory of 2136	2468	207f80d8aecae948ddfcecd954a9f645_JaffaCakes118.exe	sc.exe
PID 2468 wrote to memory of 2136	2468	207f80d8aecae948ddfcecd954a9f645_JaffaCakes118.exe	sc.exe
PID 2468 wrote to memory of 2748	2468	207f80d8aecae948ddfcecd954a9f645_JaffaCakes118.exe	sc.exe
PID 2468 wrote to memory of 2748	2468	207f80d8aecae948ddfcecd954a9f645_JaffaCakes118.exe	sc.exe
PID 2468 wrote to memory of 2748	2468	207f80d8aecae948ddfcecd954a9f645_JaffaCakes118.exe	sc.exe
PID 2468 wrote to memory of 2748	2468	207f80d8aecae948ddfcecd954a9f645_JaffaCakes118.exe	sc.exe
PID 2468 wrote to memory of 2736	2468	207f80d8aecae948ddfcecd954a9f645_JaffaCakes118.exe	sc.exe
PID 2468 wrote to memory of 2736	2468	207f80d8aecae948ddfcecd954a9f645_JaffaCakes118.exe	sc.exe
PID 2468 wrote to memory of 2736	2468	207f80d8aecae948ddfcecd954a9f645_JaffaCakes118.exe	sc.exe
PID 2468 wrote to memory of 2736	2468	207f80d8aecae948ddfcecd954a9f645_JaffaCakes118.exe	sc.exe
PID 2468 wrote to memory of 2548	2468	207f80d8aecae948ddfcecd954a9f645_JaffaCakes118.exe	netsh.exe
PID 2468 wrote to memory of 2548	2468	207f80d8aecae948ddfcecd954a9f645_JaffaCakes118.exe	netsh.exe
PID 2468 wrote to memory of 2548	2468	207f80d8aecae948ddfcecd954a9f645_JaffaCakes118.exe	netsh.exe
PID 2468 wrote to memory of 2548	2468	207f80d8aecae948ddfcecd954a9f645_JaffaCakes118.exe	netsh.exe
PID 2808 wrote to memory of 2704	2808	ytdguffn.exe	svchost.exe
PID 2808 wrote to memory of 2704	2808	ytdguffn.exe	svchost.exe
PID 2808 wrote to memory of 2704	2808	ytdguffn.exe	svchost.exe
PID 2808 wrote to memory of 2704	2808	ytdguffn.exe	svchost.exe
PID 2808 wrote to memory of 2704	2808	ytdguffn.exe	svchost.exe
PID 2808 wrote to memory of 2704	2808	ytdguffn.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\207f80d8aecae948ddfcecd954a9f645_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\207f80d8aecae948ddfcecd954a9f645_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2468
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pebcdufg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1028
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ytdguffn.exe" C:\Windows\SysWOW64\pebcdufg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2096
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create pebcdufg binPath= "C:\Windows\SysWOW64\pebcdufg\ytdguffn.exe /d\"C:\Users\Admin\AppData\Local\Temp\207f80d8aecae948ddfcecd954a9f645_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2136
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description pebcdufg "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2748
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start pebcdufg
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2736
- 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:2548

C:\Windows\SysWOW64\pebcdufg\ytdguffn.exe
C:\Windows\SysWOW64\pebcdufg\ytdguffn.exe /d"C:\Users\Admin\AppData\Local\Temp\207f80d8aecae948ddfcecd954a9f645_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2808
- 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:2704

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

2

T1562

Disable or Modify System Firewall

1

T1562.004

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\ytdguffn.exe

Filesize
12.3MB

MD5
7e54c8317e7021d027f0fd4dd68b8ca0

SHA1
767519a49f5a66848aa334a024a469006a2c25b5

SHA256
781f99eba2dd7e81a0d5dea71ab211d70040b3c80f2fe4fc58830f1a9e38dd7d

SHA512
37e32fcd3876e1c743b69ce34e48474295b062b78998346a5e2690ce42489770ee3ee9d149d0b055e0574ab71444c2d65b4bbc441699dc83007443b023a88a24

Download Submit
memory/2468-7-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2468-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2468-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2468-6-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/2468-8-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2468-1-0x0000000000520000-0x0000000000620000-memory.dmp

Filesize
1024KB

Download
memory/2704-11-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2704-14-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2704-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2704-17-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2704-18-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2808-16-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads