tofsee | 2b7385aa5abdda5bbf3da3fc48215fc837b3cd15270fc618ceac03bfb5c0ddca

General

Target

JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe
Size

14.5MB
MD5

098f305ad80931639cbd55398fae8c4a
SHA1

2389c6a040ba89e89ebd0502674c8626b232c3f9
SHA256

2b7385aa5abdda5bbf3da3fc48215fc837b3cd15270fc618ceac03bfb5c0ddca
SHA512

611afe35a3fdf49526b6ec04a095f1fcea608b65dafd96f6e6b1d55eee5b7e3801a905620862764f91b2deb256c0a29c68da7d72ab0438421d5d5d70d8b7c3b8
SSDEEP

6144:DLmhaXrxJHCx7HdqAT7mvs/bNAk3B79NmVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVj:DLmhaXrxJHuHdPT1n9N

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
4544	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\inwhqxua\ImagePath = "C:\\Windows\\SysWOW64\\inwhqxua\\fmyluhic.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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe

Deletes itself 1 IoCs

pid	Process
4996	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2776	fmyluhic.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2776 set thread context of 4996	2776	fmyluhic.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
4676	sc.exe
1836	sc.exe
1816	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
3132	2468	WerFault.exe	81
4880	2776	WerFault.exe	92

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	fmyluhic.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.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	cmd.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 2468 wrote to memory of 3948	2468	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	82
PID 2468 wrote to memory of 3948	2468	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	82
PID 2468 wrote to memory of 3948	2468	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	82
PID 2468 wrote to memory of 3112	2468	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	84
PID 2468 wrote to memory of 3112	2468	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	84
PID 2468 wrote to memory of 3112	2468	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	84
PID 2468 wrote to memory of 1816	2468	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	86
PID 2468 wrote to memory of 1816	2468	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	86
PID 2468 wrote to memory of 1816	2468	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	86
PID 2468 wrote to memory of 4676	2468	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	88
PID 2468 wrote to memory of 4676	2468	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	88
PID 2468 wrote to memory of 4676	2468	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	88
PID 2468 wrote to memory of 1836	2468	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	90
PID 2468 wrote to memory of 1836	2468	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	90
PID 2468 wrote to memory of 1836	2468	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	90
PID 2468 wrote to memory of 4544	2468	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	93
PID 2468 wrote to memory of 4544	2468	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	93
PID 2468 wrote to memory of 4544	2468	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	93
PID 2776 wrote to memory of 4996	2776	fmyluhic.exe	98
PID 2776 wrote to memory of 4996	2776	fmyluhic.exe	98
PID 2776 wrote to memory of 4996	2776	fmyluhic.exe	98
PID 2776 wrote to memory of 4996	2776	fmyluhic.exe	98
PID 2776 wrote to memory of 4996	2776	fmyluhic.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2468
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\inwhqxua\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3948
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fmyluhic.exe" C:\Windows\SysWOW64\inwhqxua\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3112
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create inwhqxua binPath= "C:\Windows\SysWOW64\inwhqxua\fmyluhic.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1816
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description inwhqxua "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4676
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start inwhqxua
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1836
- 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:4544
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2468 -s 1040
  2⤵
  - Program crash
  PID:3132

C:\Windows\SysWOW64\inwhqxua\fmyluhic.exe
C:\Windows\SysWOW64\inwhqxua\fmyluhic.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2776
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4996
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2776 -s 512
  2⤵
  - Program crash
  PID:4880

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2468 -ip 2468
1⤵
PID:3064

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2776 -ip 2776
1⤵
PID:5000

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\fmyluhic.exe

Filesize
10.6MB

MD5
e68841b5091a163a6b59aaf33db6e754

SHA1
01104c2dc3bf3de3607c95b94aa4df5d4fec2ea7

SHA256
ddbe587715f46547f570d5a9fec11d07b4344893c064271ba8a028d31ca1cf86

SHA512
0bb69f1730a104f3c5fcfe46d0bc60883837843a9ec0ad5bec230d554d8a538fa644cd65d3d8768438513b0212fe0e0c479fc59dc358969e9c9a0097dfc8b87a

Download Submit
memory/2468-9-0x00000000009B0000-0x00000000009C3000-memory.dmp

Filesize
76KB

Download
memory/2468-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2468-2-0x00000000009B0000-0x00000000009C3000-memory.dmp

Filesize
76KB

Download
memory/2468-8-0x0000000000400000-0x0000000000878000-memory.dmp

Filesize
4.5MB

Download
memory/2468-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2468-1-0x0000000000B00000-0x0000000000C00000-memory.dmp

Filesize
1024KB

Download
memory/2776-11-0x0000000000400000-0x0000000000878000-memory.dmp

Filesize
4.5MB

Download
memory/2776-12-0x0000000000400000-0x0000000000878000-memory.dmp

Filesize
4.5MB

Download
memory/2776-16-0x0000000000400000-0x0000000000878000-memory.dmp

Filesize
4.5MB

Download
memory/2776-19-0x0000000000400000-0x0000000000878000-memory.dmp

Filesize
4.5MB

Download
memory/4996-13-0x0000000000170000-0x0000000000185000-memory.dmp

Filesize
84KB

Download
memory/4996-15-0x0000000000170000-0x0000000000185000-memory.dmp

Filesize
84KB

Download
memory/4996-17-0x0000000000170000-0x0000000000185000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads