tofsee | 47234db90e903e55102e109e9054c59cb391c3c95f9fc34cacfe340cbac7f9df

General

Target

8cad62bca7d179852174d29df1b18d13_JaffaCakes118.exe
Size

10.0MB
MD5

8cad62bca7d179852174d29df1b18d13
SHA1

d03e726c4f0d14f76ef200fc442507a327b5005b
SHA256

47234db90e903e55102e109e9054c59cb391c3c95f9fc34cacfe340cbac7f9df
SHA512

135b2c43776bde36d81f2f140865155e4f5a6f020c511f5b38c485bd4a0e60bafd5cb4fb517abca735b764abbb13cd90cfaf9e9b5336ca7d064a9d479e90436d
SSDEEP

196608:zllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllZ:zllllllllllllllllllllllllllllllZ

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
Tofsee family
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\fmjgmgwu = "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

2564 netsh.exe

pid	process
2564	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\fmjgmgwu\ImagePath = "C:\\Windows\\SysWOW64\\fmjgmgwu\\vemkdfii.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2752 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

vemkdfii.exe

pid process

2836 vemkdfii.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

vemkdfii.exe

description pid process target process

PID 2836 set thread context of 2752 2836 vemkdfii.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

2180 sc.exe
2956 sc.exe
2588 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2752	svchost.exe

pid	process
2836	vemkdfii.exe

description	pid	process	target process
PID 2836 set thread context of 2752	2836	vemkdfii.exe	svchost.exe

pid	process
2180	sc.exe
2956	sc.exe
2588	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:

netsh.exe8cad62bca7d179852174d29df1b18d13_JaffaCakes118.execmd.exesc.exevemkdfii.exesvchost.execmd.exesc.exesc.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8cad62bca7d179852174d29df1b18d13_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	vemkdfii.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

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

8cad62bca7d179852174d29df1b18d13_JaffaCakes118.exevemkdfii.exe

description	pid	process	target process
PID 2440 wrote to memory of 1940	2440	8cad62bca7d179852174d29df1b18d13_JaffaCakes118.exe	cmd.exe
PID 2440 wrote to memory of 1940	2440	8cad62bca7d179852174d29df1b18d13_JaffaCakes118.exe	cmd.exe
PID 2440 wrote to memory of 1940	2440	8cad62bca7d179852174d29df1b18d13_JaffaCakes118.exe	cmd.exe
PID 2440 wrote to memory of 1940	2440	8cad62bca7d179852174d29df1b18d13_JaffaCakes118.exe	cmd.exe
PID 2440 wrote to memory of 320	2440	8cad62bca7d179852174d29df1b18d13_JaffaCakes118.exe	cmd.exe
PID 2440 wrote to memory of 320	2440	8cad62bca7d179852174d29df1b18d13_JaffaCakes118.exe	cmd.exe
PID 2440 wrote to memory of 320	2440	8cad62bca7d179852174d29df1b18d13_JaffaCakes118.exe	cmd.exe
PID 2440 wrote to memory of 320	2440	8cad62bca7d179852174d29df1b18d13_JaffaCakes118.exe	cmd.exe
PID 2440 wrote to memory of 2180	2440	8cad62bca7d179852174d29df1b18d13_JaffaCakes118.exe	sc.exe
PID 2440 wrote to memory of 2180	2440	8cad62bca7d179852174d29df1b18d13_JaffaCakes118.exe	sc.exe
PID 2440 wrote to memory of 2180	2440	8cad62bca7d179852174d29df1b18d13_JaffaCakes118.exe	sc.exe
PID 2440 wrote to memory of 2180	2440	8cad62bca7d179852174d29df1b18d13_JaffaCakes118.exe	sc.exe
PID 2440 wrote to memory of 2956	2440	8cad62bca7d179852174d29df1b18d13_JaffaCakes118.exe	sc.exe
PID 2440 wrote to memory of 2956	2440	8cad62bca7d179852174d29df1b18d13_JaffaCakes118.exe	sc.exe
PID 2440 wrote to memory of 2956	2440	8cad62bca7d179852174d29df1b18d13_JaffaCakes118.exe	sc.exe
PID 2440 wrote to memory of 2956	2440	8cad62bca7d179852174d29df1b18d13_JaffaCakes118.exe	sc.exe
PID 2440 wrote to memory of 2588	2440	8cad62bca7d179852174d29df1b18d13_JaffaCakes118.exe	sc.exe
PID 2440 wrote to memory of 2588	2440	8cad62bca7d179852174d29df1b18d13_JaffaCakes118.exe	sc.exe
PID 2440 wrote to memory of 2588	2440	8cad62bca7d179852174d29df1b18d13_JaffaCakes118.exe	sc.exe
PID 2440 wrote to memory of 2588	2440	8cad62bca7d179852174d29df1b18d13_JaffaCakes118.exe	sc.exe
PID 2440 wrote to memory of 2564	2440	8cad62bca7d179852174d29df1b18d13_JaffaCakes118.exe	netsh.exe
PID 2440 wrote to memory of 2564	2440	8cad62bca7d179852174d29df1b18d13_JaffaCakes118.exe	netsh.exe
PID 2440 wrote to memory of 2564	2440	8cad62bca7d179852174d29df1b18d13_JaffaCakes118.exe	netsh.exe
PID 2440 wrote to memory of 2564	2440	8cad62bca7d179852174d29df1b18d13_JaffaCakes118.exe	netsh.exe
PID 2836 wrote to memory of 2752	2836	vemkdfii.exe	svchost.exe
PID 2836 wrote to memory of 2752	2836	vemkdfii.exe	svchost.exe
PID 2836 wrote to memory of 2752	2836	vemkdfii.exe	svchost.exe
PID 2836 wrote to memory of 2752	2836	vemkdfii.exe	svchost.exe
PID 2836 wrote to memory of 2752	2836	vemkdfii.exe	svchost.exe
PID 2836 wrote to memory of 2752	2836	vemkdfii.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\8cad62bca7d179852174d29df1b18d13_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\8cad62bca7d179852174d29df1b18d13_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2440
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fmjgmgwu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1940
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vemkdfii.exe" C:\Windows\SysWOW64\fmjgmgwu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:320
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fmjgmgwu binPath= "C:\Windows\SysWOW64\fmjgmgwu\vemkdfii.exe /d\"C:\Users\Admin\AppData\Local\Temp\8cad62bca7d179852174d29df1b18d13_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2180
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fmjgmgwu "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2956
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fmjgmgwu
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2588
- 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:2564

C:\Windows\SysWOW64\fmjgmgwu\vemkdfii.exe
C:\Windows\SysWOW64\fmjgmgwu\vemkdfii.exe /d"C:\Users\Admin\AppData\Local\Temp\8cad62bca7d179852174d29df1b18d13_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2836
- 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:2752

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\vemkdfii.exe

Filesize
10.7MB

MD5
7b0d67021980d0babac056c1cd0ef990

SHA1
a82f50773395d0654d12c52d226ca00ce94e80f4

SHA256
0252e9f76891259ca592f31e200a9ddaac7b1a9ebd9d17b8581f949d3f956dbe

SHA512
22d3a98ce61377c48d9a313c804effbfffc08c58a0dcc49c6c203cc76dd52517aee19c09b0cd63dd9384493a51bdd57c4ea0b6abb8a761d516288bcd8a8ea0ac

Download Submit
memory/2440-8-0x0000000000400000-0x0000000002C6D000-memory.dmp

Filesize
40.4MB

Download
memory/2440-1-0x0000000002E10000-0x0000000002F10000-memory.dmp

Filesize
1024KB

Download
memory/2440-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2440-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2440-9-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2440-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2752-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2752-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2752-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2752-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2752-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2836-17-0x0000000000400000-0x0000000002C6D000-memory.dmp

Filesize
40.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads