tofsee | 8573d926664e8e68863b4132353913030b894c358af74d436e50d3c00dcf73a3

General

Target

6d18d177546eb637963d6a0eeb3850cd_JaffaCakes118.exe
Size

14.5MB
MD5

6d18d177546eb637963d6a0eeb3850cd
SHA1

b32ad7c9cd878520c73dd07440cf603933c6df77
SHA256

8573d926664e8e68863b4132353913030b894c358af74d436e50d3c00dcf73a3
SHA512

22dfd4c0392b2a9e01f6f1794e4ddf7c0173862b5a4b5963bcc2c4e37e798cb3bb00651ae88a5fe31b5bb83c64082c1266b0834cd1633f740a0f25f939c43d38
SSDEEP

6144:uNytwy0vP4gE/r4JSzyEc9T3M+0snM6rSuB:uI+XvP4Z4JSzyEg7r0snNB

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
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
4204	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\ngbanzpk\ImagePath = "C:\\Windows\\SysWOW64\\ngbanzpk\\pbnvvgvd.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	6d18d177546eb637963d6a0eeb3850cd_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
4656	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1388	pbnvvgvd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1388 set thread context of 4656	1388	pbnvvgvd.exe	104

Launches sc.exe 3 IoCs

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

pid	Process
2620	sc.exe
2012	sc.exe
3540	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	pbnvvgvd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6d18d177546eb637963d6a0eeb3850cd_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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4092 wrote to memory of 4776	4092	6d18d177546eb637963d6a0eeb3850cd_JaffaCakes118.exe	87
PID 4092 wrote to memory of 4776	4092	6d18d177546eb637963d6a0eeb3850cd_JaffaCakes118.exe	87
PID 4092 wrote to memory of 4776	4092	6d18d177546eb637963d6a0eeb3850cd_JaffaCakes118.exe	87
PID 4092 wrote to memory of 3404	4092	6d18d177546eb637963d6a0eeb3850cd_JaffaCakes118.exe	89
PID 4092 wrote to memory of 3404	4092	6d18d177546eb637963d6a0eeb3850cd_JaffaCakes118.exe	89
PID 4092 wrote to memory of 3404	4092	6d18d177546eb637963d6a0eeb3850cd_JaffaCakes118.exe	89
PID 4092 wrote to memory of 2012	4092	6d18d177546eb637963d6a0eeb3850cd_JaffaCakes118.exe	91
PID 4092 wrote to memory of 2012	4092	6d18d177546eb637963d6a0eeb3850cd_JaffaCakes118.exe	91
PID 4092 wrote to memory of 2012	4092	6d18d177546eb637963d6a0eeb3850cd_JaffaCakes118.exe	91
PID 4092 wrote to memory of 3540	4092	6d18d177546eb637963d6a0eeb3850cd_JaffaCakes118.exe	95
PID 4092 wrote to memory of 3540	4092	6d18d177546eb637963d6a0eeb3850cd_JaffaCakes118.exe	95
PID 4092 wrote to memory of 3540	4092	6d18d177546eb637963d6a0eeb3850cd_JaffaCakes118.exe	95
PID 4092 wrote to memory of 2620	4092	6d18d177546eb637963d6a0eeb3850cd_JaffaCakes118.exe	97
PID 4092 wrote to memory of 2620	4092	6d18d177546eb637963d6a0eeb3850cd_JaffaCakes118.exe	97
PID 4092 wrote to memory of 2620	4092	6d18d177546eb637963d6a0eeb3850cd_JaffaCakes118.exe	97
PID 4092 wrote to memory of 4204	4092	6d18d177546eb637963d6a0eeb3850cd_JaffaCakes118.exe	101
PID 4092 wrote to memory of 4204	4092	6d18d177546eb637963d6a0eeb3850cd_JaffaCakes118.exe	101
PID 4092 wrote to memory of 4204	4092	6d18d177546eb637963d6a0eeb3850cd_JaffaCakes118.exe	101
PID 1388 wrote to memory of 4656	1388	pbnvvgvd.exe	104
PID 1388 wrote to memory of 4656	1388	pbnvvgvd.exe	104
PID 1388 wrote to memory of 4656	1388	pbnvvgvd.exe	104
PID 1388 wrote to memory of 4656	1388	pbnvvgvd.exe	104
PID 1388 wrote to memory of 4656	1388	pbnvvgvd.exe	104

C:\Users\Admin\AppData\Local\Temp\6d18d177546eb637963d6a0eeb3850cd_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\6d18d177546eb637963d6a0eeb3850cd_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4092
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ngbanzpk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4776
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pbnvvgvd.exe" C:\Windows\SysWOW64\ngbanzpk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3404
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ngbanzpk binPath= "C:\Windows\SysWOW64\ngbanzpk\pbnvvgvd.exe /d\"C:\Users\Admin\AppData\Local\Temp\6d18d177546eb637963d6a0eeb3850cd_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2012
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ngbanzpk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3540
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ngbanzpk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2620
- 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:4204

C:\Windows\SysWOW64\ngbanzpk\pbnvvgvd.exe
C:\Windows\SysWOW64\ngbanzpk\pbnvvgvd.exe /d"C:\Users\Admin\AppData\Local\Temp\6d18d177546eb637963d6a0eeb3850cd_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1388
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4656

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

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

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\pbnvvgvd.exe

Filesize
13.5MB

MD5
bfff2a21a3fedbed6239ce043601ce84

SHA1
30c67b8ed4e16205ba1ac759b2e78139e29f5951

SHA256
6ce67aeabc37db37887bd672d714ed4fcd14efede24e8b4514adad5cd9b695a6

SHA512
3b6cfb066e4cd9923a17435be508733241021509dc5ad5201f8c2a0ed07f27ebddae27cbad8b807718a2da112c0eee4b2bb4ef9848a9048bc81efeb354e8f249

Download Submit
memory/1388-13-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/1388-11-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/1388-12-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/1388-18-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/4092-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4092-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4092-8-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/4092-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4092-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4092-1-0x0000000000880000-0x0000000000980000-memory.dmp

Filesize
1024KB

Download
memory/4656-16-0x0000000000940000-0x0000000000955000-memory.dmp

Filesize
84KB

Download
memory/4656-14-0x0000000000940000-0x0000000000955000-memory.dmp

Filesize
84KB

Download
memory/4656-19-0x0000000000940000-0x0000000000955000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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