tofsee | c63d0265b46bd1335dc44497a173abdbe8ffc762cacd9bebd485596dac45613c

General

Target

72828f1e6f5011fb0f2a17c7f5ad6a92_JaffaCakes118.exe
Size

14.8MB
MD5

72828f1e6f5011fb0f2a17c7f5ad6a92
SHA1

66f13212a070876bab338f0e742c47a8c26f9c27
SHA256

c63d0265b46bd1335dc44497a173abdbe8ffc762cacd9bebd485596dac45613c
SHA512

46f3825999754e9242d9def36cd7caa11883675c5a1783dbd5b8e41e230257c7ce309e5cbf3be6ec0c3c4eddc18b473ed58533e710ca4b9b01e6daae9e63329d
SSDEEP

196608:Cvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvn:

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
2716	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\nbgqkmkl\ImagePath = "C:\\Windows\\SysWOW64\\nbgqkmkl\\ffylxutv.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:

72828f1e6f5011fb0f2a17c7f5ad6a92_JaffaCakes118.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	72828f1e6f5011fb0f2a17c7f5ad6a92_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid	Process
4660	svchost.exe

Executes dropped EXE 1 IoCs

Processes:

ffylxutv.exe

pid	Process
2660	ffylxutv.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

ffylxutv.exe

description	pid	Process	procid_target
PID 2660 set thread context of 4660	2660	ffylxutv.exe	115

Launches sc.exe 3 IoCs

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

Processes:

sc.exesc.exesc.exe

pid	Process
5092	sc.exe
1736	sc.exe
1560	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

Processes:

netsh.exe

description	ioc	Process
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid	pid_target	Process	procid_target
1440	3448	WerFault.exe	85
2264	2660	WerFault.exe	106

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:

72828f1e6f5011fb0f2a17c7f5ad6a92_JaffaCakes118.execmd.exenetsh.execmd.exesc.exesc.exesc.exeffylxutv.exesvchost.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	72828f1e6f5011fb0f2a17c7f5ad6a92_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ffylxutv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

72828f1e6f5011fb0f2a17c7f5ad6a92_JaffaCakes118.exeffylxutv.exe

description	pid	Process	procid_target
PID 3448 wrote to memory of 5088	3448	72828f1e6f5011fb0f2a17c7f5ad6a92_JaffaCakes118.exe	89
PID 3448 wrote to memory of 5088	3448	72828f1e6f5011fb0f2a17c7f5ad6a92_JaffaCakes118.exe	89
PID 3448 wrote to memory of 5088	3448	72828f1e6f5011fb0f2a17c7f5ad6a92_JaffaCakes118.exe	89
PID 3448 wrote to memory of 4156	3448	72828f1e6f5011fb0f2a17c7f5ad6a92_JaffaCakes118.exe	92
PID 3448 wrote to memory of 4156	3448	72828f1e6f5011fb0f2a17c7f5ad6a92_JaffaCakes118.exe	92
PID 3448 wrote to memory of 4156	3448	72828f1e6f5011fb0f2a17c7f5ad6a92_JaffaCakes118.exe	92
PID 3448 wrote to memory of 5092	3448	72828f1e6f5011fb0f2a17c7f5ad6a92_JaffaCakes118.exe	96
PID 3448 wrote to memory of 5092	3448	72828f1e6f5011fb0f2a17c7f5ad6a92_JaffaCakes118.exe	96
PID 3448 wrote to memory of 5092	3448	72828f1e6f5011fb0f2a17c7f5ad6a92_JaffaCakes118.exe	96
PID 3448 wrote to memory of 1736	3448	72828f1e6f5011fb0f2a17c7f5ad6a92_JaffaCakes118.exe	98
PID 3448 wrote to memory of 1736	3448	72828f1e6f5011fb0f2a17c7f5ad6a92_JaffaCakes118.exe	98
PID 3448 wrote to memory of 1736	3448	72828f1e6f5011fb0f2a17c7f5ad6a92_JaffaCakes118.exe	98
PID 3448 wrote to memory of 1560	3448	72828f1e6f5011fb0f2a17c7f5ad6a92_JaffaCakes118.exe	104
PID 3448 wrote to memory of 1560	3448	72828f1e6f5011fb0f2a17c7f5ad6a92_JaffaCakes118.exe	104
PID 3448 wrote to memory of 1560	3448	72828f1e6f5011fb0f2a17c7f5ad6a92_JaffaCakes118.exe	104
PID 3448 wrote to memory of 2716	3448	72828f1e6f5011fb0f2a17c7f5ad6a92_JaffaCakes118.exe	107
PID 3448 wrote to memory of 2716	3448	72828f1e6f5011fb0f2a17c7f5ad6a92_JaffaCakes118.exe	107
PID 3448 wrote to memory of 2716	3448	72828f1e6f5011fb0f2a17c7f5ad6a92_JaffaCakes118.exe	107
PID 2660 wrote to memory of 4660	2660	ffylxutv.exe	115
PID 2660 wrote to memory of 4660	2660	ffylxutv.exe	115
PID 2660 wrote to memory of 4660	2660	ffylxutv.exe	115
PID 2660 wrote to memory of 4660	2660	ffylxutv.exe	115
PID 2660 wrote to memory of 4660	2660	ffylxutv.exe	115

C:\Users\Admin\AppData\Local\Temp\72828f1e6f5011fb0f2a17c7f5ad6a92_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\72828f1e6f5011fb0f2a17c7f5ad6a92_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3448
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nbgqkmkl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5088
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ffylxutv.exe" C:\Windows\SysWOW64\nbgqkmkl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4156
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nbgqkmkl binPath= "C:\Windows\SysWOW64\nbgqkmkl\ffylxutv.exe /d\"C:\Users\Admin\AppData\Local\Temp\72828f1e6f5011fb0f2a17c7f5ad6a92_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5092
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nbgqkmkl "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1736
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nbgqkmkl
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1560
- 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:2716
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3448 -s 656
  2⤵
  - Program crash
  PID:1440

C:\Windows\SysWOW64\nbgqkmkl\ffylxutv.exe
C:\Windows\SysWOW64\nbgqkmkl\ffylxutv.exe /d"C:\Users\Admin\AppData\Local\Temp\72828f1e6f5011fb0f2a17c7f5ad6a92_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2660
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4660
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2660 -s 540
  2⤵
  - Program crash
  PID:2264

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3448 -ip 3448
1⤵
PID:2180

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 2660 -ip 2660
1⤵
PID:2844

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\ffylxutv.exe

Filesize
11.5MB

MD5
867a7996c163b9de77f6e76af9bb736a

SHA1
62239433c6c07f1e98759c9f3a2f8ffec0d0df13

SHA256
6ec169e988e36960baae1998ed5a941c1a23c3536ec65097670f46ec56ab7b14

SHA512
077d80673cbfad39c473c2fb4fbcb8e95927462087476ad6624e13d608d6b05e3b203fab07fc985b4cb02ff5384cd9cf3a81785352e4b59434b1f5afde2e8392

Download Submit
memory/2660-15-0x0000000000400000-0x0000000002C6D000-memory.dmp

Filesize
40.4MB

Download
memory/3448-1-0x0000000002D30000-0x0000000002E30000-memory.dmp

Filesize
1024KB

Download
memory/3448-2-0x0000000002CF0000-0x0000000002D03000-memory.dmp

Filesize
76KB

Download
memory/3448-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3448-9-0x0000000002CF0000-0x0000000002D03000-memory.dmp

Filesize
76KB

Download
memory/3448-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3448-8-0x0000000000400000-0x0000000002C6D000-memory.dmp

Filesize
40.4MB

Download
memory/4660-14-0x00000000003C0000-0x00000000003D5000-memory.dmp

Filesize
84KB

Download
memory/4660-13-0x00000000003C0000-0x00000000003D5000-memory.dmp

Filesize
84KB

Download
memory/4660-11-0x00000000003C0000-0x00000000003D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads