tofsee | 9fe9e8413e68ba926a5cf92ea3f07a503035a65d479cb0930b10219c52f7bb11

General

Target

JaffaCakes118_9fe9e8413e68ba926a5cf92ea3f07a503035a65d479cb0930b10219c52f7bb11.exe
Size

291KB
MD5

059b6ca71cc6eddf47745e45c5134b0b
SHA1

9f8495fc5daea7fb6ffeca5abf461d9b03c83c66
SHA256

9fe9e8413e68ba926a5cf92ea3f07a503035a65d479cb0930b10219c52f7bb11
SHA512

60825f2453eb0137bee314f1ccba4a99f192cd1bced1fcfbe55b0a1fb10b5b7276d078b4f346ffb524ebba5fe1042bb3e2f846c4e2f7825c0f06b2556d9570d9
SSDEEP

6144:Vd+g4P3tZ2kWcrncIUSXuZet0ySbaHPQLx5qe28g:jgX2kbrn1USXuZet0ySbaSx5qJv

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
1444	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\fesxbnxa\ImagePath = "C:\\Windows\\SysWOW64\\fesxbnxa\\cpyvwbna.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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	JaffaCakes118_9fe9e8413e68ba926a5cf92ea3f07a503035a65d479cb0930b10219c52f7bb11.exe

Deletes itself 1 IoCs

pid	Process
2932	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3164	cpyvwbna.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3164 set thread context of 2932	3164	cpyvwbna.exe	104

Launches sc.exe 3 IoCs

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

pid	Process
4144	sc.exe
3336	sc.exe
3184	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
3464	4108	WerFault.exe	82
804	3164	WerFault.exe	95

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	JaffaCakes118_9fe9e8413e68ba926a5cf92ea3f07a503035a65d479cb0930b10219c52f7bb11.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cpyvwbna.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4108 wrote to memory of 3988	4108	JaffaCakes118_9fe9e8413e68ba926a5cf92ea3f07a503035a65d479cb0930b10219c52f7bb11.exe	83
PID 4108 wrote to memory of 3988	4108	JaffaCakes118_9fe9e8413e68ba926a5cf92ea3f07a503035a65d479cb0930b10219c52f7bb11.exe	83
PID 4108 wrote to memory of 3988	4108	JaffaCakes118_9fe9e8413e68ba926a5cf92ea3f07a503035a65d479cb0930b10219c52f7bb11.exe	83
PID 4108 wrote to memory of 4968	4108	JaffaCakes118_9fe9e8413e68ba926a5cf92ea3f07a503035a65d479cb0930b10219c52f7bb11.exe	85
PID 4108 wrote to memory of 4968	4108	JaffaCakes118_9fe9e8413e68ba926a5cf92ea3f07a503035a65d479cb0930b10219c52f7bb11.exe	85
PID 4108 wrote to memory of 4968	4108	JaffaCakes118_9fe9e8413e68ba926a5cf92ea3f07a503035a65d479cb0930b10219c52f7bb11.exe	85
PID 4108 wrote to memory of 4144	4108	JaffaCakes118_9fe9e8413e68ba926a5cf92ea3f07a503035a65d479cb0930b10219c52f7bb11.exe	87
PID 4108 wrote to memory of 4144	4108	JaffaCakes118_9fe9e8413e68ba926a5cf92ea3f07a503035a65d479cb0930b10219c52f7bb11.exe	87
PID 4108 wrote to memory of 4144	4108	JaffaCakes118_9fe9e8413e68ba926a5cf92ea3f07a503035a65d479cb0930b10219c52f7bb11.exe	87
PID 4108 wrote to memory of 3336	4108	JaffaCakes118_9fe9e8413e68ba926a5cf92ea3f07a503035a65d479cb0930b10219c52f7bb11.exe	91
PID 4108 wrote to memory of 3336	4108	JaffaCakes118_9fe9e8413e68ba926a5cf92ea3f07a503035a65d479cb0930b10219c52f7bb11.exe	91
PID 4108 wrote to memory of 3336	4108	JaffaCakes118_9fe9e8413e68ba926a5cf92ea3f07a503035a65d479cb0930b10219c52f7bb11.exe	91
PID 4108 wrote to memory of 3184	4108	JaffaCakes118_9fe9e8413e68ba926a5cf92ea3f07a503035a65d479cb0930b10219c52f7bb11.exe	93
PID 4108 wrote to memory of 3184	4108	JaffaCakes118_9fe9e8413e68ba926a5cf92ea3f07a503035a65d479cb0930b10219c52f7bb11.exe	93
PID 4108 wrote to memory of 3184	4108	JaffaCakes118_9fe9e8413e68ba926a5cf92ea3f07a503035a65d479cb0930b10219c52f7bb11.exe	93
PID 4108 wrote to memory of 1444	4108	JaffaCakes118_9fe9e8413e68ba926a5cf92ea3f07a503035a65d479cb0930b10219c52f7bb11.exe	97
PID 4108 wrote to memory of 1444	4108	JaffaCakes118_9fe9e8413e68ba926a5cf92ea3f07a503035a65d479cb0930b10219c52f7bb11.exe	97
PID 4108 wrote to memory of 1444	4108	JaffaCakes118_9fe9e8413e68ba926a5cf92ea3f07a503035a65d479cb0930b10219c52f7bb11.exe	97
PID 3164 wrote to memory of 2932	3164	cpyvwbna.exe	104
PID 3164 wrote to memory of 2932	3164	cpyvwbna.exe	104
PID 3164 wrote to memory of 2932	3164	cpyvwbna.exe	104
PID 3164 wrote to memory of 2932	3164	cpyvwbna.exe	104
PID 3164 wrote to memory of 2932	3164	cpyvwbna.exe	104

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9fe9e8413e68ba926a5cf92ea3f07a503035a65d479cb0930b10219c52f7bb11.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9fe9e8413e68ba926a5cf92ea3f07a503035a65d479cb0930b10219c52f7bb11.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4108
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fesxbnxa\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3988
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cpyvwbna.exe" C:\Windows\SysWOW64\fesxbnxa\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4968
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fesxbnxa binPath= "C:\Windows\SysWOW64\fesxbnxa\cpyvwbna.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9fe9e8413e68ba926a5cf92ea3f07a503035a65d479cb0930b10219c52f7bb11.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4144
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fesxbnxa "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3336
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fesxbnxa
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3184
- 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:1444
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4108 -s 792
  2⤵
  - Program crash
  PID:3464

C:\Windows\SysWOW64\fesxbnxa\cpyvwbna.exe
C:\Windows\SysWOW64\fesxbnxa\cpyvwbna.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9fe9e8413e68ba926a5cf92ea3f07a503035a65d479cb0930b10219c52f7bb11.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3164
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2932
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3164 -s 176
  2⤵
  - Program crash
  PID:804

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4108 -ip 4108
1⤵
PID:4724

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3164 -ip 3164
1⤵
PID:3804

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\cpyvwbna.exe

Filesize
14.7MB

MD5
fd5c9b7a36fda3e1482468325f3dab8f

SHA1
2cb60c1710d5b07981617d11c1cd5907a5f6ed8e

SHA256
022f09856bc9b888e1a747889e92b247a0104a3c622365ade48f7c2038c0ee39

SHA512
299c0787f21df059030788f0206e9a429fc9423f8b1456c81d4322e6018d2ed194afff82fd384c76af20342938c020b9f69d0e40726b35b34b21c74ae19f8384

Download Submit
memory/2932-11-0x0000000000A60000-0x0000000000A75000-memory.dmp

Filesize
84KB

Download
memory/2932-13-0x0000000000A60000-0x0000000000A75000-memory.dmp

Filesize
84KB

Download
memory/2932-14-0x0000000000A60000-0x0000000000A75000-memory.dmp

Filesize
84KB

Download
memory/3164-15-0x0000000000400000-0x0000000002B41000-memory.dmp

Filesize
39.3MB

Download
memory/4108-1-0x0000000002BA0000-0x0000000002CA0000-memory.dmp

Filesize
1024KB

Download
memory/4108-2-0x0000000004890000-0x00000000048A3000-memory.dmp

Filesize
76KB

Download
memory/4108-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4108-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4108-8-0x0000000004890000-0x00000000048A3000-memory.dmp

Filesize
76KB

Download
memory/4108-7-0x0000000000400000-0x0000000002B41000-memory.dmp

Filesize
39.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads