tofsee | 062fce8b9f73b1fc87b28d03695f8000d7e20cb6c0ad388f346815ac561d4517

General

Target

JaffaCakes118_062fce8b9f73b1fc87b28d03695f8000d7e20cb6c0ad388f346815ac561d4517.exe
Size

154KB
MD5

971185496b23d211fc7474e9374ab374
SHA1

ffa43b2c453d4bb11a0be1051a2053ae81229a9e
SHA256

062fce8b9f73b1fc87b28d03695f8000d7e20cb6c0ad388f346815ac561d4517
SHA512

13257bb542d99b9f33672be36d34d27ddeca9d872b7ee4d3e0999f6d130c35a5b42664508b7b2bf3aacd5dd25e67d405ae640e8ed2f715c55de92e5748675e0a
SSDEEP

3072:LzamdBklO3M250scMTJ2449nC5Mc8SaxMEQk0O:LzldqlO3/0scwJu95SayEcO

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
1172	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\eljzmexv\ImagePath = "C:\\Windows\\SysWOW64\\eljzmexv\\smiozjbh.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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	JaffaCakes118_062fce8b9f73b1fc87b28d03695f8000d7e20cb6c0ad388f346815ac561d4517.exe

Deletes itself 1 IoCs

pid	Process
1676	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1372	smiozjbh.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1372 set thread context of 1676	1372	smiozjbh.exe	99

Launches sc.exe 3 IoCs

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

pid	Process
1940	sc.exe
4144	sc.exe
4612	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

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	JaffaCakes118_062fce8b9f73b1fc87b28d03695f8000d7e20cb6c0ad388f346815ac561d4517.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	smiozjbh.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1732 wrote to memory of 4088	1732	JaffaCakes118_062fce8b9f73b1fc87b28d03695f8000d7e20cb6c0ad388f346815ac561d4517.exe	82
PID 1732 wrote to memory of 4088	1732	JaffaCakes118_062fce8b9f73b1fc87b28d03695f8000d7e20cb6c0ad388f346815ac561d4517.exe	82
PID 1732 wrote to memory of 4088	1732	JaffaCakes118_062fce8b9f73b1fc87b28d03695f8000d7e20cb6c0ad388f346815ac561d4517.exe	82
PID 1732 wrote to memory of 4580	1732	JaffaCakes118_062fce8b9f73b1fc87b28d03695f8000d7e20cb6c0ad388f346815ac561d4517.exe	84
PID 1732 wrote to memory of 4580	1732	JaffaCakes118_062fce8b9f73b1fc87b28d03695f8000d7e20cb6c0ad388f346815ac561d4517.exe	84
PID 1732 wrote to memory of 4580	1732	JaffaCakes118_062fce8b9f73b1fc87b28d03695f8000d7e20cb6c0ad388f346815ac561d4517.exe	84
PID 1732 wrote to memory of 4612	1732	JaffaCakes118_062fce8b9f73b1fc87b28d03695f8000d7e20cb6c0ad388f346815ac561d4517.exe	86
PID 1732 wrote to memory of 4612	1732	JaffaCakes118_062fce8b9f73b1fc87b28d03695f8000d7e20cb6c0ad388f346815ac561d4517.exe	86
PID 1732 wrote to memory of 4612	1732	JaffaCakes118_062fce8b9f73b1fc87b28d03695f8000d7e20cb6c0ad388f346815ac561d4517.exe	86
PID 1732 wrote to memory of 1940	1732	JaffaCakes118_062fce8b9f73b1fc87b28d03695f8000d7e20cb6c0ad388f346815ac561d4517.exe	90
PID 1732 wrote to memory of 1940	1732	JaffaCakes118_062fce8b9f73b1fc87b28d03695f8000d7e20cb6c0ad388f346815ac561d4517.exe	90
PID 1732 wrote to memory of 1940	1732	JaffaCakes118_062fce8b9f73b1fc87b28d03695f8000d7e20cb6c0ad388f346815ac561d4517.exe	90
PID 1732 wrote to memory of 4144	1732	JaffaCakes118_062fce8b9f73b1fc87b28d03695f8000d7e20cb6c0ad388f346815ac561d4517.exe	93
PID 1732 wrote to memory of 4144	1732	JaffaCakes118_062fce8b9f73b1fc87b28d03695f8000d7e20cb6c0ad388f346815ac561d4517.exe	93
PID 1732 wrote to memory of 4144	1732	JaffaCakes118_062fce8b9f73b1fc87b28d03695f8000d7e20cb6c0ad388f346815ac561d4517.exe	93
PID 1732 wrote to memory of 1172	1732	JaffaCakes118_062fce8b9f73b1fc87b28d03695f8000d7e20cb6c0ad388f346815ac561d4517.exe	97
PID 1732 wrote to memory of 1172	1732	JaffaCakes118_062fce8b9f73b1fc87b28d03695f8000d7e20cb6c0ad388f346815ac561d4517.exe	97
PID 1732 wrote to memory of 1172	1732	JaffaCakes118_062fce8b9f73b1fc87b28d03695f8000d7e20cb6c0ad388f346815ac561d4517.exe	97
PID 1372 wrote to memory of 1676	1372	smiozjbh.exe	99
PID 1372 wrote to memory of 1676	1372	smiozjbh.exe	99
PID 1372 wrote to memory of 1676	1372	smiozjbh.exe	99
PID 1372 wrote to memory of 1676	1372	smiozjbh.exe	99
PID 1372 wrote to memory of 1676	1372	smiozjbh.exe	99

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_062fce8b9f73b1fc87b28d03695f8000d7e20cb6c0ad388f346815ac561d4517.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_062fce8b9f73b1fc87b28d03695f8000d7e20cb6c0ad388f346815ac561d4517.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1732
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\eljzmexv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4088
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\smiozjbh.exe" C:\Windows\SysWOW64\eljzmexv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4580
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create eljzmexv binPath= "C:\Windows\SysWOW64\eljzmexv\smiozjbh.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_062fce8b9f73b1fc87b28d03695f8000d7e20cb6c0ad388f346815ac561d4517.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4612
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description eljzmexv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1940
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start eljzmexv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4144
- 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:1172

C:\Windows\SysWOW64\eljzmexv\smiozjbh.exe
C:\Windows\SysWOW64\eljzmexv\smiozjbh.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_062fce8b9f73b1fc87b28d03695f8000d7e20cb6c0ad388f346815ac561d4517.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1372
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1676

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\smiozjbh.exe

Filesize
14.5MB

MD5
aa36ec95c5045b833c75a5ff798cb2a3

SHA1
2250aeb6029e07c0a374c337637e674523231857

SHA256
3234263d789902d6ed7b32b08b478db5b3e7e3af2177b8fa13d9a10b7d022eda

SHA512
145dfc19925b02b895edc29ba231ba58de232a2c8b8f69f32cef9300d77ce7a0fc9c6d99f434b3f71cc64c1703ec6aac78dea0dac1f43b1173468a053775630d

Download Submit
memory/1372-13-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/1372-12-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/1372-11-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/1372-16-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/1676-14-0x00000000012B0000-0x00000000012C5000-memory.dmp

Filesize
84KB

Download
memory/1676-18-0x00000000012B0000-0x00000000012C5000-memory.dmp

Filesize
84KB

Download
memory/1676-19-0x00000000012B0000-0x00000000012C5000-memory.dmp

Filesize
84KB

Download
memory/1732-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1732-2-0x0000000002200000-0x0000000002213000-memory.dmp

Filesize
76KB

Download
memory/1732-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1732-9-0x0000000002200000-0x0000000002213000-memory.dmp

Filesize
76KB

Download
memory/1732-8-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/1732-1-0x00000000005E0000-0x00000000006E0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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