tofsee | 4c6b4d2e35397d2ab57443bbd96fda25bdfb5bf932e37dd669b794c0b4222331

General

Target

0e7f9b3a9f76503087e94c2b5539df41_JaffaCakes118.exe
Size

12.8MB
MD5

0e7f9b3a9f76503087e94c2b5539df41
SHA1

325486efe485fe1506d69692d75697eb968932c7
SHA256

4c6b4d2e35397d2ab57443bbd96fda25bdfb5bf932e37dd669b794c0b4222331
SHA512

90eaf93a59d0c368658f9fadb48a9feb1c73cba0ce823b3a9cb0d986fd5ea2e73db82ed8b7cf2e95d15a941e4444d82b8a2f49b5a26fed4813c0beeda6638b7c
SSDEEP

393216:5rrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr:

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

pid	Process
2340	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\jkdzsygx\ImagePath = "C:\\Windows\\SysWOW64\\jkdzsygx\\aynztpaq.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-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	0e7f9b3a9f76503087e94c2b5539df41_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2152	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2148	aynztpaq.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2148 set thread context of 2152	2148	aynztpaq.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
4240	sc.exe
1552	sc.exe
2684	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
4516	2524	WerFault.exe	81
2664	2148	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	aynztpaq.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	0e7f9b3a9f76503087e94c2b5539df41_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2524 wrote to memory of 2456	2524	0e7f9b3a9f76503087e94c2b5539df41_JaffaCakes118.exe	82
PID 2524 wrote to memory of 2456	2524	0e7f9b3a9f76503087e94c2b5539df41_JaffaCakes118.exe	82
PID 2524 wrote to memory of 2456	2524	0e7f9b3a9f76503087e94c2b5539df41_JaffaCakes118.exe	82
PID 2524 wrote to memory of 4736	2524	0e7f9b3a9f76503087e94c2b5539df41_JaffaCakes118.exe	84
PID 2524 wrote to memory of 4736	2524	0e7f9b3a9f76503087e94c2b5539df41_JaffaCakes118.exe	84
PID 2524 wrote to memory of 4736	2524	0e7f9b3a9f76503087e94c2b5539df41_JaffaCakes118.exe	84
PID 2524 wrote to memory of 2684	2524	0e7f9b3a9f76503087e94c2b5539df41_JaffaCakes118.exe	86
PID 2524 wrote to memory of 2684	2524	0e7f9b3a9f76503087e94c2b5539df41_JaffaCakes118.exe	86
PID 2524 wrote to memory of 2684	2524	0e7f9b3a9f76503087e94c2b5539df41_JaffaCakes118.exe	86
PID 2524 wrote to memory of 4240	2524	0e7f9b3a9f76503087e94c2b5539df41_JaffaCakes118.exe	88
PID 2524 wrote to memory of 4240	2524	0e7f9b3a9f76503087e94c2b5539df41_JaffaCakes118.exe	88
PID 2524 wrote to memory of 4240	2524	0e7f9b3a9f76503087e94c2b5539df41_JaffaCakes118.exe	88
PID 2524 wrote to memory of 1552	2524	0e7f9b3a9f76503087e94c2b5539df41_JaffaCakes118.exe	90
PID 2524 wrote to memory of 1552	2524	0e7f9b3a9f76503087e94c2b5539df41_JaffaCakes118.exe	90
PID 2524 wrote to memory of 1552	2524	0e7f9b3a9f76503087e94c2b5539df41_JaffaCakes118.exe	90
PID 2524 wrote to memory of 2340	2524	0e7f9b3a9f76503087e94c2b5539df41_JaffaCakes118.exe	93
PID 2524 wrote to memory of 2340	2524	0e7f9b3a9f76503087e94c2b5539df41_JaffaCakes118.exe	93
PID 2524 wrote to memory of 2340	2524	0e7f9b3a9f76503087e94c2b5539df41_JaffaCakes118.exe	93
PID 2148 wrote to memory of 2152	2148	aynztpaq.exe	98
PID 2148 wrote to memory of 2152	2148	aynztpaq.exe	98
PID 2148 wrote to memory of 2152	2148	aynztpaq.exe	98
PID 2148 wrote to memory of 2152	2148	aynztpaq.exe	98
PID 2148 wrote to memory of 2152	2148	aynztpaq.exe	98

C:\Users\Admin\AppData\Local\Temp\0e7f9b3a9f76503087e94c2b5539df41_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\0e7f9b3a9f76503087e94c2b5539df41_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2524
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jkdzsygx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2456
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\aynztpaq.exe" C:\Windows\SysWOW64\jkdzsygx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4736
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create jkdzsygx binPath= "C:\Windows\SysWOW64\jkdzsygx\aynztpaq.exe /d\"C:\Users\Admin\AppData\Local\Temp\0e7f9b3a9f76503087e94c2b5539df41_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2684
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description jkdzsygx "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4240
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start jkdzsygx
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1552
- 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:2340
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2524 -s 1040
  2⤵
  - Program crash
  PID:4516

C:\Windows\SysWOW64\jkdzsygx\aynztpaq.exe
C:\Windows\SysWOW64\jkdzsygx\aynztpaq.exe /d"C:\Users\Admin\AppData\Local\Temp\0e7f9b3a9f76503087e94c2b5539df41_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2148
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2152
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2148 -s 512
  2⤵
  - Program crash
  PID:2664

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 2524 -ip 2524
1⤵
PID:2064

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 2148 -ip 2148
1⤵
PID:4828

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\aynztpaq.exe

Filesize
10.3MB

MD5
ddfbe85b243d02ab606926c0c3b07ada

SHA1
3017b855c9f8b8b1a7eb8e51da2e7c03f149d337

SHA256
5d5288d2f0b2f45e9ef69b9494a70997ab08ed287e7dc7d67445df202152d3e9

SHA512
d3cd86631f5db3944ed088df7fac3e2d789362b3c619c60557d268cee19c96f5011a85564270fd1f7ff6380cfab02bec7d86c9c9ebed895dedc4177df75da875

Download Submit
memory/2148-13-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/2148-12-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/2148-11-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/2148-19-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/2152-14-0x0000000000820000-0x0000000000835000-memory.dmp

Filesize
84KB

Download
memory/2152-16-0x0000000000820000-0x0000000000835000-memory.dmp

Filesize
84KB

Download
memory/2152-17-0x0000000000820000-0x0000000000835000-memory.dmp

Filesize
84KB

Download
memory/2524-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2524-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2524-8-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/2524-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2524-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2524-1-0x00000000004B0000-0x00000000005B0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads