tofsee | b02cf0f673dc10cbbfff3f277c2276aeb6b35582adfda30067e558e6f645aa47

General

Target

JaffaCakes118_573a11410343b2658d1db7646acc75c9.exe
Size

12.9MB
MD5

573a11410343b2658d1db7646acc75c9
SHA1

1246e32ff4fe1533154937310692f0e8bce0e29d
SHA256

b02cf0f673dc10cbbfff3f277c2276aeb6b35582adfda30067e558e6f645aa47
SHA512

2f233a03cf667a1c4b3e7aa2d78594f68f430bddf0fcaac5dacef484452707bc7802802141bfd9cc96ca2380d9ad1ea3c9389960074c74ceb62dd1f33236f4c8
SSDEEP

49152:ukHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH:

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.ru

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
4524	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\nczbwwge\ImagePath = "C:\\Windows\\SysWOW64\\nczbwwge\\yrfrjdfs.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_573a11410343b2658d1db7646acc75c9.exe

Deletes itself 1 IoCs

pid	Process
4624	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1180	yrfrjdfs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1180 set thread context of 4624	1180	yrfrjdfs.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
376	sc.exe
1112	sc.exe
2016	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
224	1596	WerFault.exe	81
4172	1180	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	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	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	yrfrjdfs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_573a11410343b2658d1db7646acc75c9.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1596 wrote to memory of 3268	1596	JaffaCakes118_573a11410343b2658d1db7646acc75c9.exe	82
PID 1596 wrote to memory of 3268	1596	JaffaCakes118_573a11410343b2658d1db7646acc75c9.exe	82
PID 1596 wrote to memory of 3268	1596	JaffaCakes118_573a11410343b2658d1db7646acc75c9.exe	82
PID 1596 wrote to memory of 2228	1596	JaffaCakes118_573a11410343b2658d1db7646acc75c9.exe	84
PID 1596 wrote to memory of 2228	1596	JaffaCakes118_573a11410343b2658d1db7646acc75c9.exe	84
PID 1596 wrote to memory of 2228	1596	JaffaCakes118_573a11410343b2658d1db7646acc75c9.exe	84
PID 1596 wrote to memory of 376	1596	JaffaCakes118_573a11410343b2658d1db7646acc75c9.exe	86
PID 1596 wrote to memory of 376	1596	JaffaCakes118_573a11410343b2658d1db7646acc75c9.exe	86
PID 1596 wrote to memory of 376	1596	JaffaCakes118_573a11410343b2658d1db7646acc75c9.exe	86
PID 1596 wrote to memory of 1112	1596	JaffaCakes118_573a11410343b2658d1db7646acc75c9.exe	88
PID 1596 wrote to memory of 1112	1596	JaffaCakes118_573a11410343b2658d1db7646acc75c9.exe	88
PID 1596 wrote to memory of 1112	1596	JaffaCakes118_573a11410343b2658d1db7646acc75c9.exe	88
PID 1596 wrote to memory of 2016	1596	JaffaCakes118_573a11410343b2658d1db7646acc75c9.exe	90
PID 1596 wrote to memory of 2016	1596	JaffaCakes118_573a11410343b2658d1db7646acc75c9.exe	90
PID 1596 wrote to memory of 2016	1596	JaffaCakes118_573a11410343b2658d1db7646acc75c9.exe	90
PID 1596 wrote to memory of 4524	1596	JaffaCakes118_573a11410343b2658d1db7646acc75c9.exe	93
PID 1596 wrote to memory of 4524	1596	JaffaCakes118_573a11410343b2658d1db7646acc75c9.exe	93
PID 1596 wrote to memory of 4524	1596	JaffaCakes118_573a11410343b2658d1db7646acc75c9.exe	93
PID 1180 wrote to memory of 4624	1180	yrfrjdfs.exe	98
PID 1180 wrote to memory of 4624	1180	yrfrjdfs.exe	98
PID 1180 wrote to memory of 4624	1180	yrfrjdfs.exe	98
PID 1180 wrote to memory of 4624	1180	yrfrjdfs.exe	98
PID 1180 wrote to memory of 4624	1180	yrfrjdfs.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_573a11410343b2658d1db7646acc75c9.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_573a11410343b2658d1db7646acc75c9.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1596
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nczbwwge\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3268
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\yrfrjdfs.exe" C:\Windows\SysWOW64\nczbwwge\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2228
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nczbwwge binPath= "C:\Windows\SysWOW64\nczbwwge\yrfrjdfs.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_573a11410343b2658d1db7646acc75c9.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:376
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nczbwwge "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1112
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nczbwwge
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2016
- 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:4524
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1596 -s 1208
  2⤵
  - Program crash
  PID:224

C:\Windows\SysWOW64\nczbwwge\yrfrjdfs.exe
C:\Windows\SysWOW64\nczbwwge\yrfrjdfs.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_573a11410343b2658d1db7646acc75c9.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1180
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4624
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 268
  2⤵
  - Program crash
  PID:4172

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 1596 -ip 1596
1⤵
PID:3036

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 1180 -ip 1180
1⤵
PID:4620

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\yrfrjdfs.exe

Filesize
10.4MB

MD5
cd3c444c6c3d09c5d0eb100e0f3dfd2f

SHA1
600fe8ec9e477470ca78f1a4b07e5984a7f57ae5

SHA256
cedaf188b6c56c40904cdd97ea11ae09df0c35fe87a88521ececd32f76f773a6

SHA512
5cfe83283bb3f3ad5226f5332df5851580c57e06a868c1c1588a8a7a41ad6dcd83454b438fb07208641023d379cf5c2c849ee267eaa2f0bff353ad1ef2e7334e

Download Submit
memory/1180-11-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/1180-16-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/1596-1-0x00000000008D0000-0x00000000009D0000-memory.dmp

Filesize
1024KB

Download
memory/1596-2-0x0000000000850000-0x0000000000863000-memory.dmp

Filesize
76KB

Download
memory/1596-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1596-8-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/1596-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1596-9-0x0000000000850000-0x0000000000863000-memory.dmp

Filesize
76KB

Download
memory/4624-12-0x0000000000520000-0x0000000000535000-memory.dmp

Filesize
84KB

Download
memory/4624-14-0x0000000000520000-0x0000000000535000-memory.dmp

Filesize
84KB

Download
memory/4624-15-0x0000000000520000-0x0000000000535000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads