tofsee | 6efa37fbe1d2b36377422a2bda7ad818ed27eacbae4143ce43074a9ae37dbc64

General

Target

JaffaCakes118_6efa37fbe1d2b36377422a2bda7ad818ed27eacbae4143ce43074a9ae37dbc64.exe
Size

248KB
MD5

08e886dbf2ad5dd30be2f1f9074e8fb9
SHA1

3289e1f267778f5ee4cc6497950ca91774a02958
SHA256

6efa37fbe1d2b36377422a2bda7ad818ed27eacbae4143ce43074a9ae37dbc64
SHA512

ca66fe3b0a08c266ed62cde167227cfa326494d14b2094536c8bf0898be7aa5e81b7523c6503529cbaae3ab7cfde31cb2caf85e273626649dad58c7949cfc1c2
SSDEEP

3072:zy013VbzDdITSNw8eLATjcHTkDYTlrjQBK+WrxpzbgqruXhs7sxkgaBChU/pZa9U:e0bzDJAEvs6MCK+uzbgwu6QigabwVf

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
4712	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\lbuftkdk\ImagePath = "C:\\Windows\\SysWOW64\\lbuftkdk\\dwkwoikx.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_6efa37fbe1d2b36377422a2bda7ad818ed27eacbae4143ce43074a9ae37dbc64.exe

Deletes itself 1 IoCs

pid	Process
3284	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3436	dwkwoikx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3436 set thread context of 3284	3436	dwkwoikx.exe	96

Launches sc.exe 3 IoCs

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

pid	Process
4144	sc.exe
4372	sc.exe
2056	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
2452	3200	WerFault.exe	82
1936	3436	WerFault.exe	93

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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dwkwoikx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_6efa37fbe1d2b36377422a2bda7ad818ed27eacbae4143ce43074a9ae37dbc64.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	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3200 wrote to memory of 4384	3200	JaffaCakes118_6efa37fbe1d2b36377422a2bda7ad818ed27eacbae4143ce43074a9ae37dbc64.exe	83
PID 3200 wrote to memory of 4384	3200	JaffaCakes118_6efa37fbe1d2b36377422a2bda7ad818ed27eacbae4143ce43074a9ae37dbc64.exe	83
PID 3200 wrote to memory of 4384	3200	JaffaCakes118_6efa37fbe1d2b36377422a2bda7ad818ed27eacbae4143ce43074a9ae37dbc64.exe	83
PID 3200 wrote to memory of 1064	3200	JaffaCakes118_6efa37fbe1d2b36377422a2bda7ad818ed27eacbae4143ce43074a9ae37dbc64.exe	85
PID 3200 wrote to memory of 1064	3200	JaffaCakes118_6efa37fbe1d2b36377422a2bda7ad818ed27eacbae4143ce43074a9ae37dbc64.exe	85
PID 3200 wrote to memory of 1064	3200	JaffaCakes118_6efa37fbe1d2b36377422a2bda7ad818ed27eacbae4143ce43074a9ae37dbc64.exe	85
PID 3200 wrote to memory of 2056	3200	JaffaCakes118_6efa37fbe1d2b36377422a2bda7ad818ed27eacbae4143ce43074a9ae37dbc64.exe	87
PID 3200 wrote to memory of 2056	3200	JaffaCakes118_6efa37fbe1d2b36377422a2bda7ad818ed27eacbae4143ce43074a9ae37dbc64.exe	87
PID 3200 wrote to memory of 2056	3200	JaffaCakes118_6efa37fbe1d2b36377422a2bda7ad818ed27eacbae4143ce43074a9ae37dbc64.exe	87
PID 3200 wrote to memory of 4144	3200	JaffaCakes118_6efa37fbe1d2b36377422a2bda7ad818ed27eacbae4143ce43074a9ae37dbc64.exe	89
PID 3200 wrote to memory of 4144	3200	JaffaCakes118_6efa37fbe1d2b36377422a2bda7ad818ed27eacbae4143ce43074a9ae37dbc64.exe	89
PID 3200 wrote to memory of 4144	3200	JaffaCakes118_6efa37fbe1d2b36377422a2bda7ad818ed27eacbae4143ce43074a9ae37dbc64.exe	89
PID 3200 wrote to memory of 4372	3200	JaffaCakes118_6efa37fbe1d2b36377422a2bda7ad818ed27eacbae4143ce43074a9ae37dbc64.exe	91
PID 3200 wrote to memory of 4372	3200	JaffaCakes118_6efa37fbe1d2b36377422a2bda7ad818ed27eacbae4143ce43074a9ae37dbc64.exe	91
PID 3200 wrote to memory of 4372	3200	JaffaCakes118_6efa37fbe1d2b36377422a2bda7ad818ed27eacbae4143ce43074a9ae37dbc64.exe	91
PID 3200 wrote to memory of 4712	3200	JaffaCakes118_6efa37fbe1d2b36377422a2bda7ad818ed27eacbae4143ce43074a9ae37dbc64.exe	94
PID 3200 wrote to memory of 4712	3200	JaffaCakes118_6efa37fbe1d2b36377422a2bda7ad818ed27eacbae4143ce43074a9ae37dbc64.exe	94
PID 3200 wrote to memory of 4712	3200	JaffaCakes118_6efa37fbe1d2b36377422a2bda7ad818ed27eacbae4143ce43074a9ae37dbc64.exe	94
PID 3436 wrote to memory of 3284	3436	dwkwoikx.exe	96
PID 3436 wrote to memory of 3284	3436	dwkwoikx.exe	96
PID 3436 wrote to memory of 3284	3436	dwkwoikx.exe	96
PID 3436 wrote to memory of 3284	3436	dwkwoikx.exe	96
PID 3436 wrote to memory of 3284	3436	dwkwoikx.exe	96

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6efa37fbe1d2b36377422a2bda7ad818ed27eacbae4143ce43074a9ae37dbc64.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6efa37fbe1d2b36377422a2bda7ad818ed27eacbae4143ce43074a9ae37dbc64.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3200
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lbuftkdk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4384
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\dwkwoikx.exe" C:\Windows\SysWOW64\lbuftkdk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1064
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create lbuftkdk binPath= "C:\Windows\SysWOW64\lbuftkdk\dwkwoikx.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6efa37fbe1d2b36377422a2bda7ad818ed27eacbae4143ce43074a9ae37dbc64.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2056
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description lbuftkdk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4144
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start lbuftkdk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4372
- 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:4712
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3200 -s 1276
  2⤵
  - Program crash
  PID:2452

C:\Windows\SysWOW64\lbuftkdk\dwkwoikx.exe
C:\Windows\SysWOW64\lbuftkdk\dwkwoikx.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6efa37fbe1d2b36377422a2bda7ad818ed27eacbae4143ce43074a9ae37dbc64.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3436
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3284
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3436 -s 508
  2⤵
  - Program crash
  PID:1936

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3200 -ip 3200
1⤵
PID:2500

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 3436 -ip 3436
1⤵
PID:4928

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\dwkwoikx.exe

Filesize
10.6MB

MD5
0b6aa9e07080adcce1eac2562b393439

SHA1
e6661154a5ea0d458a8df07730b84321a7085f02

SHA256
60cd15885f9365c76e7a7a10b54c766219639a63a750c3a81dff24ca784c6630

SHA512
87c5463af274bf282636421368346bb12654c506a70d24a5d4e321dd8771d59490ebd35afc3ef0083731894d856a998f368de6f11f63a6f94bfde7eb58748e99

Download Submit
memory/3200-12-0x0000000000610000-0x0000000000623000-memory.dmp

Filesize
76KB

Download
memory/3200-14-0x0000000000400000-0x0000000000447000-memory.dmp

Filesize
284KB

Download
memory/3200-1-0x0000000000610000-0x0000000000623000-memory.dmp

Filesize
76KB

Download
memory/3200-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3200-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3200-0-0x00000000005F0000-0x00000000005FD000-memory.dmp

Filesize
52KB

Download
memory/3200-11-0x00000000005F0000-0x00000000005FD000-memory.dmp

Filesize
52KB

Download
memory/3284-9-0x00000000010A0000-0x00000000010B5000-memory.dmp

Filesize
84KB

Download
memory/3284-18-0x00000000010A0000-0x00000000010B5000-memory.dmp

Filesize
84KB

Download
memory/3284-19-0x00000000010A0000-0x00000000010B5000-memory.dmp

Filesize
84KB

Download
memory/3436-8-0x0000000000400000-0x0000000000447000-memory.dmp

Filesize
284KB

Download
memory/3436-6-0x0000000000400000-0x0000000000447000-memory.dmp

Filesize
284KB

Download
memory/3436-7-0x0000000000400000-0x0000000000447000-memory.dmp

Filesize
284KB

Download
memory/3436-15-0x0000000000400000-0x0000000000447000-memory.dmp

Filesize
284KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads