tofsee | 8d7c8ef6d362692f079bff3f66af4f7fd253660a5b28f68442df12d47bf7a043

General

Target

JaffaCakes118_8d7c8ef6d362692f079bff3f66af4f7fd253660a5b28f68442df12d47bf7a043.exe
Size

286KB
MD5

35222c2852fe3d8ed50c8820b4aa10fb
SHA1

47664e419c4357857bac4257a317c282e36c0009
SHA256

8d7c8ef6d362692f079bff3f66af4f7fd253660a5b28f68442df12d47bf7a043
SHA512

5233c53cfb2aea7450076be4dee889048621a005b39b69330393bb041dc97ad7240e5ce1bc6a7ac6fc0f9d121b2e20765b96d9a57d499233ef8518a98013d92d
SSDEEP

3072:Kkt7EEcdxTVtTjv6z7lKBFRqHXu0ay/McZWKYZYU/Gx9II9PtcLHTbuJt3nnLBbi:K47QPVtTjv4lKb8HhtY0vIAKzinLBw

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
3252	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\jninutew\ImagePath = "C:\\Windows\\SysWOW64\\jninutew\\eyualvnt.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_8d7c8ef6d362692f079bff3f66af4f7fd253660a5b28f68442df12d47bf7a043.exe

Deletes itself 1 IoCs

pid	Process
688	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3824	eyualvnt.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3824 set thread context of 688	3824	eyualvnt.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
1280	sc.exe
2132	sc.exe
4976	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1088	2312	WerFault.exe	81
5108	3824	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_8d7c8ef6d362692f079bff3f66af4f7fd253660a5b28f68442df12d47bf7a043.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	eyualvnt.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2312 wrote to memory of 3188	2312	JaffaCakes118_8d7c8ef6d362692f079bff3f66af4f7fd253660a5b28f68442df12d47bf7a043.exe	82
PID 2312 wrote to memory of 3188	2312	JaffaCakes118_8d7c8ef6d362692f079bff3f66af4f7fd253660a5b28f68442df12d47bf7a043.exe	82
PID 2312 wrote to memory of 3188	2312	JaffaCakes118_8d7c8ef6d362692f079bff3f66af4f7fd253660a5b28f68442df12d47bf7a043.exe	82
PID 2312 wrote to memory of 2776	2312	JaffaCakes118_8d7c8ef6d362692f079bff3f66af4f7fd253660a5b28f68442df12d47bf7a043.exe	84
PID 2312 wrote to memory of 2776	2312	JaffaCakes118_8d7c8ef6d362692f079bff3f66af4f7fd253660a5b28f68442df12d47bf7a043.exe	84
PID 2312 wrote to memory of 2776	2312	JaffaCakes118_8d7c8ef6d362692f079bff3f66af4f7fd253660a5b28f68442df12d47bf7a043.exe	84
PID 2312 wrote to memory of 1280	2312	JaffaCakes118_8d7c8ef6d362692f079bff3f66af4f7fd253660a5b28f68442df12d47bf7a043.exe	86
PID 2312 wrote to memory of 1280	2312	JaffaCakes118_8d7c8ef6d362692f079bff3f66af4f7fd253660a5b28f68442df12d47bf7a043.exe	86
PID 2312 wrote to memory of 1280	2312	JaffaCakes118_8d7c8ef6d362692f079bff3f66af4f7fd253660a5b28f68442df12d47bf7a043.exe	86
PID 2312 wrote to memory of 2132	2312	JaffaCakes118_8d7c8ef6d362692f079bff3f66af4f7fd253660a5b28f68442df12d47bf7a043.exe	88
PID 2312 wrote to memory of 2132	2312	JaffaCakes118_8d7c8ef6d362692f079bff3f66af4f7fd253660a5b28f68442df12d47bf7a043.exe	88
PID 2312 wrote to memory of 2132	2312	JaffaCakes118_8d7c8ef6d362692f079bff3f66af4f7fd253660a5b28f68442df12d47bf7a043.exe	88
PID 2312 wrote to memory of 4976	2312	JaffaCakes118_8d7c8ef6d362692f079bff3f66af4f7fd253660a5b28f68442df12d47bf7a043.exe	90
PID 2312 wrote to memory of 4976	2312	JaffaCakes118_8d7c8ef6d362692f079bff3f66af4f7fd253660a5b28f68442df12d47bf7a043.exe	90
PID 2312 wrote to memory of 4976	2312	JaffaCakes118_8d7c8ef6d362692f079bff3f66af4f7fd253660a5b28f68442df12d47bf7a043.exe	90
PID 2312 wrote to memory of 3252	2312	JaffaCakes118_8d7c8ef6d362692f079bff3f66af4f7fd253660a5b28f68442df12d47bf7a043.exe	93
PID 2312 wrote to memory of 3252	2312	JaffaCakes118_8d7c8ef6d362692f079bff3f66af4f7fd253660a5b28f68442df12d47bf7a043.exe	93
PID 2312 wrote to memory of 3252	2312	JaffaCakes118_8d7c8ef6d362692f079bff3f66af4f7fd253660a5b28f68442df12d47bf7a043.exe	93
PID 3824 wrote to memory of 688	3824	eyualvnt.exe	98
PID 3824 wrote to memory of 688	3824	eyualvnt.exe	98
PID 3824 wrote to memory of 688	3824	eyualvnt.exe	98
PID 3824 wrote to memory of 688	3824	eyualvnt.exe	98
PID 3824 wrote to memory of 688	3824	eyualvnt.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8d7c8ef6d362692f079bff3f66af4f7fd253660a5b28f68442df12d47bf7a043.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8d7c8ef6d362692f079bff3f66af4f7fd253660a5b28f68442df12d47bf7a043.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2312
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jninutew\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3188
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\eyualvnt.exe" C:\Windows\SysWOW64\jninutew\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2776
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create jninutew binPath= "C:\Windows\SysWOW64\jninutew\eyualvnt.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8d7c8ef6d362692f079bff3f66af4f7fd253660a5b28f68442df12d47bf7a043.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1280
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description jninutew "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2132
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start jninutew
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4976
- 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:3252
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2312 -s 1044
  2⤵
  - Program crash
  PID:1088

C:\Windows\SysWOW64\jninutew\eyualvnt.exe
C:\Windows\SysWOW64\jninutew\eyualvnt.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8d7c8ef6d362692f079bff3f66af4f7fd253660a5b28f68442df12d47bf7a043.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3824
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:688
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3824 -s 520
  2⤵
  - Program crash
  PID:5108

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 2312 -ip 2312
1⤵
PID:3908

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 3824 -ip 3824
1⤵
PID:1128

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\eyualvnt.exe

Filesize
15.0MB

MD5
47c68a19eaa874ee6a46e7ddad123de4

SHA1
59897bdd1fd91648759b8ab630bdc6ab0da80c8a

SHA256
8df26a5a1280bf1298c105a8f78c2c50f42d5de6c0f2eb4d21c6c439d0f70bf0

SHA512
1d08b83054816de950dd265e7e86d2f48ec687dc41b46757b5250c2296a7e8f40271205c6ce442655c91d8b2c2ba0d7569929dc2966f544667d9b36d9e946bf0

Download Submit
memory/688-11-0x0000000000B20000-0x0000000000B35000-memory.dmp

Filesize
84KB

Download
memory/688-13-0x0000000000B20000-0x0000000000B35000-memory.dmp

Filesize
84KB

Download
memory/688-14-0x0000000000B20000-0x0000000000B35000-memory.dmp

Filesize
84KB

Download
memory/2312-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2312-1-0x0000000002EC0000-0x0000000002FC0000-memory.dmp

Filesize
1024KB

Download
memory/2312-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2312-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2312-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2312-8-0x0000000000400000-0x0000000002B90000-memory.dmp

Filesize
39.6MB

Download
memory/3824-15-0x0000000000400000-0x0000000002B90000-memory.dmp

Filesize
39.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads