tofsee | e58409630e95d8ac57f087d7aff79d8ebe7a9b47e0994d151b43e0f42648e955

General

Target

JaffaCakes118_e58409630e95d8ac57f087d7aff79d8ebe7a9b47e0994d151b43e0f42648e955.exe
Size

248KB
MD5

05171687b09ff86dfffe92f4fdd637ef
SHA1

171ae4be69a4c47f11355fffb437eafbfca9f954
SHA256

e58409630e95d8ac57f087d7aff79d8ebe7a9b47e0994d151b43e0f42648e955
SHA512

aec67b38240fb1fe62a9f25ebf385f19ea5246b5822375f6a31a465a6dd6e047a255ff52950723ee650dcd52974b6076c1c4eceb967dcbdc6c62ca770b7b635a
SSDEEP

6144:jyKwDO/FcU545JdF6uzbgwu6QigabwVf:2KwDeFHmdF6unn5

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
1168	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\auypsslw\ImagePath = "C:\\Windows\\SysWOW64\\auypsslw\\fymyqkmz.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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	JaffaCakes118_e58409630e95d8ac57f087d7aff79d8ebe7a9b47e0994d151b43e0f42648e955.exe

Deletes itself 1 IoCs

pid	Process
3356	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2404	fymyqkmz.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2404 set thread context of 3356	2404	fymyqkmz.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
956	sc.exe
4740	sc.exe
1848	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
3780	1240	WerFault.exe	81
1760	2404	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fymyqkmz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_e58409630e95d8ac57f087d7aff79d8ebe7a9b47e0994d151b43e0f42648e955.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	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 1240 wrote to memory of 3316	1240	JaffaCakes118_e58409630e95d8ac57f087d7aff79d8ebe7a9b47e0994d151b43e0f42648e955.exe	82
PID 1240 wrote to memory of 3316	1240	JaffaCakes118_e58409630e95d8ac57f087d7aff79d8ebe7a9b47e0994d151b43e0f42648e955.exe	82
PID 1240 wrote to memory of 3316	1240	JaffaCakes118_e58409630e95d8ac57f087d7aff79d8ebe7a9b47e0994d151b43e0f42648e955.exe	82
PID 1240 wrote to memory of 2148	1240	JaffaCakes118_e58409630e95d8ac57f087d7aff79d8ebe7a9b47e0994d151b43e0f42648e955.exe	84
PID 1240 wrote to memory of 2148	1240	JaffaCakes118_e58409630e95d8ac57f087d7aff79d8ebe7a9b47e0994d151b43e0f42648e955.exe	84
PID 1240 wrote to memory of 2148	1240	JaffaCakes118_e58409630e95d8ac57f087d7aff79d8ebe7a9b47e0994d151b43e0f42648e955.exe	84
PID 1240 wrote to memory of 956	1240	JaffaCakes118_e58409630e95d8ac57f087d7aff79d8ebe7a9b47e0994d151b43e0f42648e955.exe	86
PID 1240 wrote to memory of 956	1240	JaffaCakes118_e58409630e95d8ac57f087d7aff79d8ebe7a9b47e0994d151b43e0f42648e955.exe	86
PID 1240 wrote to memory of 956	1240	JaffaCakes118_e58409630e95d8ac57f087d7aff79d8ebe7a9b47e0994d151b43e0f42648e955.exe	86
PID 1240 wrote to memory of 4740	1240	JaffaCakes118_e58409630e95d8ac57f087d7aff79d8ebe7a9b47e0994d151b43e0f42648e955.exe	88
PID 1240 wrote to memory of 4740	1240	JaffaCakes118_e58409630e95d8ac57f087d7aff79d8ebe7a9b47e0994d151b43e0f42648e955.exe	88
PID 1240 wrote to memory of 4740	1240	JaffaCakes118_e58409630e95d8ac57f087d7aff79d8ebe7a9b47e0994d151b43e0f42648e955.exe	88
PID 1240 wrote to memory of 1848	1240	JaffaCakes118_e58409630e95d8ac57f087d7aff79d8ebe7a9b47e0994d151b43e0f42648e955.exe	90
PID 1240 wrote to memory of 1848	1240	JaffaCakes118_e58409630e95d8ac57f087d7aff79d8ebe7a9b47e0994d151b43e0f42648e955.exe	90
PID 1240 wrote to memory of 1848	1240	JaffaCakes118_e58409630e95d8ac57f087d7aff79d8ebe7a9b47e0994d151b43e0f42648e955.exe	90
PID 1240 wrote to memory of 1168	1240	JaffaCakes118_e58409630e95d8ac57f087d7aff79d8ebe7a9b47e0994d151b43e0f42648e955.exe	93
PID 1240 wrote to memory of 1168	1240	JaffaCakes118_e58409630e95d8ac57f087d7aff79d8ebe7a9b47e0994d151b43e0f42648e955.exe	93
PID 1240 wrote to memory of 1168	1240	JaffaCakes118_e58409630e95d8ac57f087d7aff79d8ebe7a9b47e0994d151b43e0f42648e955.exe	93
PID 2404 wrote to memory of 3356	2404	fymyqkmz.exe	98
PID 2404 wrote to memory of 3356	2404	fymyqkmz.exe	98
PID 2404 wrote to memory of 3356	2404	fymyqkmz.exe	98
PID 2404 wrote to memory of 3356	2404	fymyqkmz.exe	98
PID 2404 wrote to memory of 3356	2404	fymyqkmz.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e58409630e95d8ac57f087d7aff79d8ebe7a9b47e0994d151b43e0f42648e955.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e58409630e95d8ac57f087d7aff79d8ebe7a9b47e0994d151b43e0f42648e955.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1240
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\auypsslw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3316
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fymyqkmz.exe" C:\Windows\SysWOW64\auypsslw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2148
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create auypsslw binPath= "C:\Windows\SysWOW64\auypsslw\fymyqkmz.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e58409630e95d8ac57f087d7aff79d8ebe7a9b47e0994d151b43e0f42648e955.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:956
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description auypsslw "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4740
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start auypsslw
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1848
- 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:1168
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1240 -s 1112
  2⤵
  - Program crash
  PID:3780

C:\Windows\SysWOW64\auypsslw\fymyqkmz.exe
C:\Windows\SysWOW64\auypsslw\fymyqkmz.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e58409630e95d8ac57f087d7aff79d8ebe7a9b47e0994d151b43e0f42648e955.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2404
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3356
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2404 -s 512
  2⤵
  - Program crash
  PID:1760

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 1240 -ip 1240
1⤵
PID:4708

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 2404 -ip 2404
1⤵
PID:4544

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\fymyqkmz.exe

Filesize
13.2MB

MD5
847be262eb5bed7b4857dc0e5ed32c6b

SHA1
c789e075b708f15102a4a2e59a34e3fe2f285543

SHA256
47d55d4457a5129e92c354c8150c36bce8fe68b9e9168a540cdeee2c64c0871b

SHA512
41559ecae906deb1ffaa990d1c90919417454f397ae40463edaf24949c20b94b293bb46e5d7b611f20c2cdf8d69626aceaa16820b7759192faabc7336238f7d5

Download Submit
memory/1240-7-0x0000000002190000-0x000000000219D000-memory.dmp

Filesize
52KB

Download
memory/1240-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1240-1-0x00000000021A0000-0x00000000021B3000-memory.dmp

Filesize
76KB

Download
memory/1240-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1240-8-0x00000000021A0000-0x00000000021B3000-memory.dmp

Filesize
76KB

Download
memory/1240-0-0x0000000002190000-0x000000000219D000-memory.dmp

Filesize
52KB

Download
memory/1240-6-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/2404-11-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/2404-10-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/2404-12-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/2404-18-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/3356-13-0x0000000000830000-0x0000000000845000-memory.dmp

Filesize
84KB

Download
memory/3356-15-0x0000000000830000-0x0000000000845000-memory.dmp

Filesize
84KB

Download
memory/3356-16-0x0000000000830000-0x0000000000845000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads