tofsee | 4a8ff4292376fecbc3a78ec62f84db4cd27ed5f124af777837678c12edda5d80

General

Target

JaffaCakes118_4a8ff4292376fecbc3a78ec62f84db4cd27ed5f124af777837678c12edda5d80.exe
Size

188KB
MD5

b8ae14ec90bf47e6f94d942c5718059b
SHA1

fbc2ed4e74385f5e1763cd8fdf3db0b4cd607ae8
SHA256

4a8ff4292376fecbc3a78ec62f84db4cd27ed5f124af777837678c12edda5d80
SHA512

4d22ec962b2555ac2480ab9d78b4de369602ce2c6b5376a863782d8e0e85e419d67e8e30176ed0e01c76cc0656d1cfa38e3f7d0fd31d0803001e190c17c6ac1f
SSDEEP

3072:97F4NKHBeCklmKGuJveyIh5cLcLLDjaqX+IzYZf6w6Eq:bACklmKTOaqZTssw

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
1488	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\otyqoflh\ImagePath = "C:\\Windows\\SysWOW64\\otyqoflh\\wtejhrol.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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	JaffaCakes118_4a8ff4292376fecbc3a78ec62f84db4cd27ed5f124af777837678c12edda5d80.exe

Deletes itself 1 IoCs

pid	Process
3992	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2884	wtejhrol.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2884 set thread context of 3992	2884	wtejhrol.exe	99

Launches sc.exe 3 IoCs

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

pid	Process
1060	sc.exe
1036	sc.exe
1164	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
3244	4912	WerFault.exe	82
1988	2884	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wtejhrol.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4a8ff4292376fecbc3a78ec62f84db4cd27ed5f124af777837678c12edda5d80.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	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4912 wrote to memory of 3912	4912	JaffaCakes118_4a8ff4292376fecbc3a78ec62f84db4cd27ed5f124af777837678c12edda5d80.exe	83
PID 4912 wrote to memory of 3912	4912	JaffaCakes118_4a8ff4292376fecbc3a78ec62f84db4cd27ed5f124af777837678c12edda5d80.exe	83
PID 4912 wrote to memory of 3912	4912	JaffaCakes118_4a8ff4292376fecbc3a78ec62f84db4cd27ed5f124af777837678c12edda5d80.exe	83
PID 4912 wrote to memory of 3520	4912	JaffaCakes118_4a8ff4292376fecbc3a78ec62f84db4cd27ed5f124af777837678c12edda5d80.exe	85
PID 4912 wrote to memory of 3520	4912	JaffaCakes118_4a8ff4292376fecbc3a78ec62f84db4cd27ed5f124af777837678c12edda5d80.exe	85
PID 4912 wrote to memory of 3520	4912	JaffaCakes118_4a8ff4292376fecbc3a78ec62f84db4cd27ed5f124af777837678c12edda5d80.exe	85
PID 4912 wrote to memory of 1060	4912	JaffaCakes118_4a8ff4292376fecbc3a78ec62f84db4cd27ed5f124af777837678c12edda5d80.exe	87
PID 4912 wrote to memory of 1060	4912	JaffaCakes118_4a8ff4292376fecbc3a78ec62f84db4cd27ed5f124af777837678c12edda5d80.exe	87
PID 4912 wrote to memory of 1060	4912	JaffaCakes118_4a8ff4292376fecbc3a78ec62f84db4cd27ed5f124af777837678c12edda5d80.exe	87
PID 4912 wrote to memory of 1036	4912	JaffaCakes118_4a8ff4292376fecbc3a78ec62f84db4cd27ed5f124af777837678c12edda5d80.exe	89
PID 4912 wrote to memory of 1036	4912	JaffaCakes118_4a8ff4292376fecbc3a78ec62f84db4cd27ed5f124af777837678c12edda5d80.exe	89
PID 4912 wrote to memory of 1036	4912	JaffaCakes118_4a8ff4292376fecbc3a78ec62f84db4cd27ed5f124af777837678c12edda5d80.exe	89
PID 4912 wrote to memory of 1164	4912	JaffaCakes118_4a8ff4292376fecbc3a78ec62f84db4cd27ed5f124af777837678c12edda5d80.exe	91
PID 4912 wrote to memory of 1164	4912	JaffaCakes118_4a8ff4292376fecbc3a78ec62f84db4cd27ed5f124af777837678c12edda5d80.exe	91
PID 4912 wrote to memory of 1164	4912	JaffaCakes118_4a8ff4292376fecbc3a78ec62f84db4cd27ed5f124af777837678c12edda5d80.exe	91
PID 4912 wrote to memory of 1488	4912	JaffaCakes118_4a8ff4292376fecbc3a78ec62f84db4cd27ed5f124af777837678c12edda5d80.exe	94
PID 4912 wrote to memory of 1488	4912	JaffaCakes118_4a8ff4292376fecbc3a78ec62f84db4cd27ed5f124af777837678c12edda5d80.exe	94
PID 4912 wrote to memory of 1488	4912	JaffaCakes118_4a8ff4292376fecbc3a78ec62f84db4cd27ed5f124af777837678c12edda5d80.exe	94
PID 2884 wrote to memory of 3992	2884	wtejhrol.exe	99
PID 2884 wrote to memory of 3992	2884	wtejhrol.exe	99
PID 2884 wrote to memory of 3992	2884	wtejhrol.exe	99
PID 2884 wrote to memory of 3992	2884	wtejhrol.exe	99
PID 2884 wrote to memory of 3992	2884	wtejhrol.exe	99

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4a8ff4292376fecbc3a78ec62f84db4cd27ed5f124af777837678c12edda5d80.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4a8ff4292376fecbc3a78ec62f84db4cd27ed5f124af777837678c12edda5d80.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4912
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\otyqoflh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3912
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wtejhrol.exe" C:\Windows\SysWOW64\otyqoflh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3520
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create otyqoflh binPath= "C:\Windows\SysWOW64\otyqoflh\wtejhrol.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4a8ff4292376fecbc3a78ec62f84db4cd27ed5f124af777837678c12edda5d80.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1060
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description otyqoflh "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1036
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start otyqoflh
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1164
- 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:1488
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4912 -s 1272
  2⤵
  - Program crash
  PID:3244

C:\Windows\SysWOW64\otyqoflh\wtejhrol.exe
C:\Windows\SysWOW64\otyqoflh\wtejhrol.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4a8ff4292376fecbc3a78ec62f84db4cd27ed5f124af777837678c12edda5d80.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2884
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3992
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2884 -s 540
  2⤵
  - Program crash
  PID:1988

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 4912 -ip 4912
1⤵
PID:2332

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2884 -ip 2884
1⤵
PID:2940

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\wtejhrol.exe

Filesize
13.5MB

MD5
66489b24e3a72fe21e21bf6c0b70a428

SHA1
f7df90e0b3e11debfb53d3e5c77e070dd47fc96b

SHA256
4774900bdf8332cfb64d2e79eb3c27ce85cc02f1e1e842df2af612eb9d2e5b17

SHA512
b08d65ce8f116329caa055b312d812f7c49f46ce01ae8f89a8cad43a39b4ceb9121d615c24ab06714bc84dd262bbaf0b199004b7f49655a84d7d162ebe7d49ed

Download Submit
memory/2884-17-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/2884-6-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/2884-7-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/3992-11-0x0000000000A20000-0x0000000000A35000-memory.dmp

Filesize
84KB

Download
memory/3992-20-0x0000000000A20000-0x0000000000A35000-memory.dmp

Filesize
84KB

Download
memory/3992-8-0x0000000000A20000-0x0000000000A35000-memory.dmp

Filesize
84KB

Download
memory/3992-19-0x0000000000A20000-0x0000000000A35000-memory.dmp

Filesize
84KB

Download
memory/3992-18-0x0000000000A20000-0x0000000000A35000-memory.dmp

Filesize
84KB

Download
memory/4912-15-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4912-13-0x0000000002180000-0x000000000218D000-memory.dmp

Filesize
52KB

Download
memory/4912-12-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/4912-0-0x0000000002180000-0x000000000218D000-memory.dmp

Filesize
52KB

Download
memory/4912-14-0x0000000002190000-0x00000000021A3000-memory.dmp

Filesize
76KB

Download
memory/4912-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4912-1-0x0000000002190000-0x00000000021A3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads