tofsee | 1fd9a5cd4b99aa127df418c91d64587722d645403a50bbfd577591e1d7fceb36

General

Target

JaffaCakes118_1fd9a5cd4b99aa127df418c91d64587722d645403a50bbfd577591e1d7fceb36.exe
Size

262KB
MD5

4ee647771485ffc9848991a8cba8f527
SHA1

7c0ebf75d310c5725db233f6e67f923d526d68b5
SHA256

1fd9a5cd4b99aa127df418c91d64587722d645403a50bbfd577591e1d7fceb36
SHA512

9b93bd56dfa68a9cbec621b879d48fe2d093e84a924f92400f454ddfe0b39e9ed919e4b0918e1a31c2754110556c130b05d0b604d7eefa4ace39ec5dfe6b5f81
SSDEEP

6144:Bw4If8y3w4qjCACIrdYf6K5OCacgsP+19G4oVG+EwnGS:Bw4IEyvqjCAnriCK50cgs+1ERGsnG

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
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
4832	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\eydrtekv\ImagePath = "C:\\Windows\\SysWOW64\\eydrtekv\\rhhhwntl.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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	JaffaCakes118_1fd9a5cd4b99aa127df418c91d64587722d645403a50bbfd577591e1d7fceb36.exe

Deletes itself 1 IoCs

pid	Process
1816	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1192	rhhhwntl.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1192 set thread context of 1816	1192	rhhhwntl.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
4760	sc.exe
1908	sc.exe
3104	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4884	4028	WerFault.exe	82
948	1192	WerFault.exe	94

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	rhhhwntl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_1fd9a5cd4b99aa127df418c91d64587722d645403a50bbfd577591e1d7fceb36.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4028 wrote to memory of 1212	4028	JaffaCakes118_1fd9a5cd4b99aa127df418c91d64587722d645403a50bbfd577591e1d7fceb36.exe	83
PID 4028 wrote to memory of 1212	4028	JaffaCakes118_1fd9a5cd4b99aa127df418c91d64587722d645403a50bbfd577591e1d7fceb36.exe	83
PID 4028 wrote to memory of 1212	4028	JaffaCakes118_1fd9a5cd4b99aa127df418c91d64587722d645403a50bbfd577591e1d7fceb36.exe	83
PID 4028 wrote to memory of 964	4028	JaffaCakes118_1fd9a5cd4b99aa127df418c91d64587722d645403a50bbfd577591e1d7fceb36.exe	85
PID 4028 wrote to memory of 964	4028	JaffaCakes118_1fd9a5cd4b99aa127df418c91d64587722d645403a50bbfd577591e1d7fceb36.exe	85
PID 4028 wrote to memory of 964	4028	JaffaCakes118_1fd9a5cd4b99aa127df418c91d64587722d645403a50bbfd577591e1d7fceb36.exe	85
PID 4028 wrote to memory of 4760	4028	JaffaCakes118_1fd9a5cd4b99aa127df418c91d64587722d645403a50bbfd577591e1d7fceb36.exe	87
PID 4028 wrote to memory of 4760	4028	JaffaCakes118_1fd9a5cd4b99aa127df418c91d64587722d645403a50bbfd577591e1d7fceb36.exe	87
PID 4028 wrote to memory of 4760	4028	JaffaCakes118_1fd9a5cd4b99aa127df418c91d64587722d645403a50bbfd577591e1d7fceb36.exe	87
PID 4028 wrote to memory of 1908	4028	JaffaCakes118_1fd9a5cd4b99aa127df418c91d64587722d645403a50bbfd577591e1d7fceb36.exe	89
PID 4028 wrote to memory of 1908	4028	JaffaCakes118_1fd9a5cd4b99aa127df418c91d64587722d645403a50bbfd577591e1d7fceb36.exe	89
PID 4028 wrote to memory of 1908	4028	JaffaCakes118_1fd9a5cd4b99aa127df418c91d64587722d645403a50bbfd577591e1d7fceb36.exe	89
PID 4028 wrote to memory of 3104	4028	JaffaCakes118_1fd9a5cd4b99aa127df418c91d64587722d645403a50bbfd577591e1d7fceb36.exe	92
PID 4028 wrote to memory of 3104	4028	JaffaCakes118_1fd9a5cd4b99aa127df418c91d64587722d645403a50bbfd577591e1d7fceb36.exe	92
PID 4028 wrote to memory of 3104	4028	JaffaCakes118_1fd9a5cd4b99aa127df418c91d64587722d645403a50bbfd577591e1d7fceb36.exe	92
PID 4028 wrote to memory of 4832	4028	JaffaCakes118_1fd9a5cd4b99aa127df418c91d64587722d645403a50bbfd577591e1d7fceb36.exe	95
PID 4028 wrote to memory of 4832	4028	JaffaCakes118_1fd9a5cd4b99aa127df418c91d64587722d645403a50bbfd577591e1d7fceb36.exe	95
PID 4028 wrote to memory of 4832	4028	JaffaCakes118_1fd9a5cd4b99aa127df418c91d64587722d645403a50bbfd577591e1d7fceb36.exe	95
PID 1192 wrote to memory of 1816	1192	rhhhwntl.exe	101
PID 1192 wrote to memory of 1816	1192	rhhhwntl.exe	101
PID 1192 wrote to memory of 1816	1192	rhhhwntl.exe	101
PID 1192 wrote to memory of 1816	1192	rhhhwntl.exe	101
PID 1192 wrote to memory of 1816	1192	rhhhwntl.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1fd9a5cd4b99aa127df418c91d64587722d645403a50bbfd577591e1d7fceb36.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1fd9a5cd4b99aa127df418c91d64587722d645403a50bbfd577591e1d7fceb36.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4028
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\eydrtekv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1212
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rhhhwntl.exe" C:\Windows\SysWOW64\eydrtekv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:964
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create eydrtekv binPath= "C:\Windows\SysWOW64\eydrtekv\rhhhwntl.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1fd9a5cd4b99aa127df418c91d64587722d645403a50bbfd577591e1d7fceb36.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4760
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description eydrtekv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1908
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start eydrtekv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3104
- 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:4832
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4028 -s 576
  2⤵
  - Program crash
  PID:4884

C:\Windows\SysWOW64\eydrtekv\rhhhwntl.exe
C:\Windows\SysWOW64\eydrtekv\rhhhwntl.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1fd9a5cd4b99aa127df418c91d64587722d645403a50bbfd577591e1d7fceb36.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1192
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1816
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1192 -s 516
  2⤵
  - Program crash
  PID:948

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 4028 -ip 4028
1⤵
PID:3996

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1192 -ip 1192
1⤵
PID:3484

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\rhhhwntl.exe

Filesize
10.9MB

MD5
ad9aea7b43c765dc213a68ba86269d1d

SHA1
2c9e3b97a87012343bfffa7746587ebb54ab3f5f

SHA256
efc1ecf0adff392eb5a2a67a9226ed9c672d80626ccb805c15af55ca600841c4

SHA512
077979b3ecaab1e9ad40919e250553b35faaa9e94445fb68512d4011b1e5f7dc05f31028afc30007f5da3bf8d569a73a11b736df278173e2aec8d498ed141d3b

Download Submit
memory/1192-11-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/1192-18-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/1192-13-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/1192-12-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/1816-14-0x0000000000F80000-0x0000000000F95000-memory.dmp

Filesize
84KB

Download
memory/1816-16-0x0000000000F80000-0x0000000000F95000-memory.dmp

Filesize
84KB

Download
memory/1816-17-0x0000000000F80000-0x0000000000F95000-memory.dmp

Filesize
84KB

Download
memory/4028-8-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/4028-9-0x00000000009C0000-0x00000000009D3000-memory.dmp

Filesize
76KB

Download
memory/4028-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4028-1-0x0000000000BC0000-0x0000000000CC0000-memory.dmp

Filesize
1024KB

Download
memory/4028-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4028-2-0x00000000009C0000-0x00000000009D3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads