tofsee | bf3e87a6467a8aa94b20b0c87eb32114b7249585913ef625d65009f313c247fa

General

Target

JaffaCakes118_ca7622c3853a5ee886d5808b4eea1a7e.exe
Size

10.3MB
MD5

ca7622c3853a5ee886d5808b4eea1a7e
SHA1

91727c20f51736a8cfca7405cb5ebf257f53243d
SHA256

bf3e87a6467a8aa94b20b0c87eb32114b7249585913ef625d65009f313c247fa
SHA512

5c1c177cabfd7388e06fa9813c250445f678effb56b1ed61ef6ba87070770f31aa9a83c6ec4d68607fbb8df2c4b7ee3fa1f50e8305af66f5812e88aef5e25197
SSDEEP

12288:oZq+cdlGKSEdlGfxl5V/ZAMbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb:ok9dVcl5V/Z

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
4756	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\peeywqc\ImagePath = "C:\\Windows\\SysWOW64\\peeywqc\\glhzxam.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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	JaffaCakes118_ca7622c3853a5ee886d5808b4eea1a7e.exe

Deletes itself 1 IoCs

pid	Process
3772	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1900	glhzxam.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1900 set thread context of 3772	1900	glhzxam.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
2888	sc.exe
4944	sc.exe
3848	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
1740	4052	WerFault.exe	81
2528	1900	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	glhzxam.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_ca7622c3853a5ee886d5808b4eea1a7e.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4052 wrote to memory of 4708	4052	JaffaCakes118_ca7622c3853a5ee886d5808b4eea1a7e.exe	82
PID 4052 wrote to memory of 4708	4052	JaffaCakes118_ca7622c3853a5ee886d5808b4eea1a7e.exe	82
PID 4052 wrote to memory of 4708	4052	JaffaCakes118_ca7622c3853a5ee886d5808b4eea1a7e.exe	82
PID 4052 wrote to memory of 4108	4052	JaffaCakes118_ca7622c3853a5ee886d5808b4eea1a7e.exe	84
PID 4052 wrote to memory of 4108	4052	JaffaCakes118_ca7622c3853a5ee886d5808b4eea1a7e.exe	84
PID 4052 wrote to memory of 4108	4052	JaffaCakes118_ca7622c3853a5ee886d5808b4eea1a7e.exe	84
PID 4052 wrote to memory of 3848	4052	JaffaCakes118_ca7622c3853a5ee886d5808b4eea1a7e.exe	86
PID 4052 wrote to memory of 3848	4052	JaffaCakes118_ca7622c3853a5ee886d5808b4eea1a7e.exe	86
PID 4052 wrote to memory of 3848	4052	JaffaCakes118_ca7622c3853a5ee886d5808b4eea1a7e.exe	86
PID 4052 wrote to memory of 2888	4052	JaffaCakes118_ca7622c3853a5ee886d5808b4eea1a7e.exe	88
PID 4052 wrote to memory of 2888	4052	JaffaCakes118_ca7622c3853a5ee886d5808b4eea1a7e.exe	88
PID 4052 wrote to memory of 2888	4052	JaffaCakes118_ca7622c3853a5ee886d5808b4eea1a7e.exe	88
PID 4052 wrote to memory of 4944	4052	JaffaCakes118_ca7622c3853a5ee886d5808b4eea1a7e.exe	90
PID 4052 wrote to memory of 4944	4052	JaffaCakes118_ca7622c3853a5ee886d5808b4eea1a7e.exe	90
PID 4052 wrote to memory of 4944	4052	JaffaCakes118_ca7622c3853a5ee886d5808b4eea1a7e.exe	90
PID 4052 wrote to memory of 4756	4052	JaffaCakes118_ca7622c3853a5ee886d5808b4eea1a7e.exe	93
PID 4052 wrote to memory of 4756	4052	JaffaCakes118_ca7622c3853a5ee886d5808b4eea1a7e.exe	93
PID 4052 wrote to memory of 4756	4052	JaffaCakes118_ca7622c3853a5ee886d5808b4eea1a7e.exe	93
PID 1900 wrote to memory of 3772	1900	glhzxam.exe	98
PID 1900 wrote to memory of 3772	1900	glhzxam.exe	98
PID 1900 wrote to memory of 3772	1900	glhzxam.exe	98
PID 1900 wrote to memory of 3772	1900	glhzxam.exe	98
PID 1900 wrote to memory of 3772	1900	glhzxam.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ca7622c3853a5ee886d5808b4eea1a7e.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ca7622c3853a5ee886d5808b4eea1a7e.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4052
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\peeywqc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4708
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\glhzxam.exe" C:\Windows\SysWOW64\peeywqc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4108
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create peeywqc binPath= "C:\Windows\SysWOW64\peeywqc\glhzxam.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ca7622c3853a5ee886d5808b4eea1a7e.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3848
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description peeywqc "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2888
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start peeywqc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4944
- 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:4756
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4052 -s 1156
  2⤵
  - Program crash
  PID:1740

C:\Windows\SysWOW64\peeywqc\glhzxam.exe
C:\Windows\SysWOW64\peeywqc\glhzxam.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ca7622c3853a5ee886d5808b4eea1a7e.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1900
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3772
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1900 -s 512
  2⤵
  - Program crash
  PID:2528

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4052 -ip 4052
1⤵
PID:2284

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 1900 -ip 1900
1⤵
PID:1684

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\glhzxam.exe

Filesize
11.9MB

MD5
96b2e6c175558d44dbf3678c5c4b7406

SHA1
5cbffdfb4ed065d3a9ce11ec36150b1ba1542a71

SHA256
8156547b6053695730ec1a2343a58acc29bb76c6673aec7a5efa9a46193b3b49

SHA512
f1e0c4c3c1d905597d60a7564a48b050c440b228f52e07b0d18147bca9f3ded9ec260058b1e2c35c4070e03d1a438a2bff6d7c1417aaf757908cdc9b4606b17a

Download Submit
memory/1900-13-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1900-12-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1900-11-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1900-18-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3772-14-0x0000000000CE0000-0x0000000000CF5000-memory.dmp

Filesize
84KB

Download
memory/3772-16-0x0000000000CE0000-0x0000000000CF5000-memory.dmp

Filesize
84KB

Download
memory/3772-17-0x0000000000CE0000-0x0000000000CF5000-memory.dmp

Filesize
84KB

Download
memory/4052-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4052-2-0x00000000001D0000-0x00000000001E3000-memory.dmp

Filesize
76KB

Download
memory/4052-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4052-9-0x00000000001D0000-0x00000000001E3000-memory.dmp

Filesize
76KB

Download
memory/4052-8-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4052-1-0x0000000000730000-0x0000000000830000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads