tofsee | 0368c3deaa1b74ba4ad8c78d8864fe753180afc90bf176d62e358806d592c1f9

General

Target

5f444dd71f179c39181c76fcfc492697_JaffaCakes118.exe
Size

11.7MB
MD5

5f444dd71f179c39181c76fcfc492697
SHA1

6be8f1d3d9ff5a1bbd57a305fb528614768f14df
SHA256

0368c3deaa1b74ba4ad8c78d8864fe753180afc90bf176d62e358806d592c1f9
SHA512

156068d93086b00ce0ccd31f7b6b66da7c3c43add4933324bb24cc7e6dde1fbcf0d700d33c489c375c8ff5eb09f69dadb080d908076b548bf34cfb35262e2da6
SSDEEP

3072:9NoWIXVg044YmyJc/rY/2Woct6Mz+7L00vyLf9nQLWLIMcesvKeHTQzIaH/q99QY:9NoWwy0jYBkE/vocLz+2QSLIBee8q9N

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

Processes:

netsh.exe

pid process

1104 netsh.exe

pid	process
1104	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\plxdvgbn\ImagePath = "C:\\Windows\\SysWOW64\\plxdvgbn\\nusdidrf.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

Processes:

5f444dd71f179c39181c76fcfc492697_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	5f444dd71f179c39181c76fcfc492697_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

460 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

nusdidrf.exe

pid process

4820 nusdidrf.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

nusdidrf.exe

description pid process target process

PID 4820 set thread context of 460 4820 nusdidrf.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

3292 sc.exe
2240 sc.exe
2484 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
460	svchost.exe

pid	process
4820	nusdidrf.exe

description	pid	process	target process
PID 4820 set thread context of 460	4820	nusdidrf.exe	svchost.exe

pid	process
3292	sc.exe
2240	sc.exe
2484	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 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

Processes:

cmd.exesc.exenusdidrf.execmd.exesc.exesc.exenetsh.exesvchost.exe5f444dd71f179c39181c76fcfc492697_JaffaCakes118.exe

description	ioc	process
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	nusdidrf.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5f444dd71f179c39181c76fcfc492697_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

5f444dd71f179c39181c76fcfc492697_JaffaCakes118.exenusdidrf.exe

description	pid	process	target process
PID 204 wrote to memory of 2664	204	5f444dd71f179c39181c76fcfc492697_JaffaCakes118.exe	cmd.exe
PID 204 wrote to memory of 2664	204	5f444dd71f179c39181c76fcfc492697_JaffaCakes118.exe	cmd.exe
PID 204 wrote to memory of 2664	204	5f444dd71f179c39181c76fcfc492697_JaffaCakes118.exe	cmd.exe
PID 204 wrote to memory of 2708	204	5f444dd71f179c39181c76fcfc492697_JaffaCakes118.exe	cmd.exe
PID 204 wrote to memory of 2708	204	5f444dd71f179c39181c76fcfc492697_JaffaCakes118.exe	cmd.exe
PID 204 wrote to memory of 2708	204	5f444dd71f179c39181c76fcfc492697_JaffaCakes118.exe	cmd.exe
PID 204 wrote to memory of 3292	204	5f444dd71f179c39181c76fcfc492697_JaffaCakes118.exe	sc.exe
PID 204 wrote to memory of 3292	204	5f444dd71f179c39181c76fcfc492697_JaffaCakes118.exe	sc.exe
PID 204 wrote to memory of 3292	204	5f444dd71f179c39181c76fcfc492697_JaffaCakes118.exe	sc.exe
PID 204 wrote to memory of 2240	204	5f444dd71f179c39181c76fcfc492697_JaffaCakes118.exe	sc.exe
PID 204 wrote to memory of 2240	204	5f444dd71f179c39181c76fcfc492697_JaffaCakes118.exe	sc.exe
PID 204 wrote to memory of 2240	204	5f444dd71f179c39181c76fcfc492697_JaffaCakes118.exe	sc.exe
PID 204 wrote to memory of 2484	204	5f444dd71f179c39181c76fcfc492697_JaffaCakes118.exe	sc.exe
PID 204 wrote to memory of 2484	204	5f444dd71f179c39181c76fcfc492697_JaffaCakes118.exe	sc.exe
PID 204 wrote to memory of 2484	204	5f444dd71f179c39181c76fcfc492697_JaffaCakes118.exe	sc.exe
PID 204 wrote to memory of 1104	204	5f444dd71f179c39181c76fcfc492697_JaffaCakes118.exe	netsh.exe
PID 204 wrote to memory of 1104	204	5f444dd71f179c39181c76fcfc492697_JaffaCakes118.exe	netsh.exe
PID 204 wrote to memory of 1104	204	5f444dd71f179c39181c76fcfc492697_JaffaCakes118.exe	netsh.exe
PID 4820 wrote to memory of 460	4820	nusdidrf.exe	svchost.exe
PID 4820 wrote to memory of 460	4820	nusdidrf.exe	svchost.exe
PID 4820 wrote to memory of 460	4820	nusdidrf.exe	svchost.exe
PID 4820 wrote to memory of 460	4820	nusdidrf.exe	svchost.exe
PID 4820 wrote to memory of 460	4820	nusdidrf.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\5f444dd71f179c39181c76fcfc492697_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\5f444dd71f179c39181c76fcfc492697_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:204
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\plxdvgbn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2664
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nusdidrf.exe" C:\Windows\SysWOW64\plxdvgbn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2708
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create plxdvgbn binPath= "C:\Windows\SysWOW64\plxdvgbn\nusdidrf.exe /d\"C:\Users\Admin\AppData\Local\Temp\5f444dd71f179c39181c76fcfc492697_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3292
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description plxdvgbn "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2240
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start plxdvgbn
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2484
- 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:1104

C:\Windows\SysWOW64\plxdvgbn\nusdidrf.exe
C:\Windows\SysWOW64\plxdvgbn\nusdidrf.exe /d"C:\Users\Admin\AppData\Local\Temp\5f444dd71f179c39181c76fcfc492697_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4820
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:460

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\nusdidrf.exe

Filesize
11.9MB

MD5
4e0c0c18ee2a1f084601b990b0b89575

SHA1
ddfe1a7fffc393d11063a365e577c5e574f47530

SHA256
33edd3a91bdd16c36ae66fd58a291260be5adbe65313a710950b83d377cf4199

SHA512
b3a05b3b71f3c72fcf1384c3c25c90fed78d6610f40e2e85e4dd3f42d3cff2175a192e4ba001fcf7833caa92d77ba8ad05112caa1bc0e6d10663fe114c765019

Download Submit
memory/204-9-0x00000000001D0000-0x00000000001E3000-memory.dmp

Filesize
76KB

Download
memory/204-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/204-2-0x00000000001D0000-0x00000000001E3000-memory.dmp

Filesize
76KB

Download
memory/204-8-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/204-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/204-1-0x0000000000AD0000-0x0000000000BD0000-memory.dmp

Filesize
1024KB

Download
memory/460-17-0x0000000000710000-0x0000000000725000-memory.dmp

Filesize
84KB

Download
memory/460-14-0x0000000000710000-0x0000000000725000-memory.dmp

Filesize
84KB

Download
memory/460-19-0x0000000000710000-0x0000000000725000-memory.dmp

Filesize
84KB

Download
memory/4820-11-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/4820-12-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/4820-13-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/4820-18-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads