tofsee | e8a8a3ec0c1434244877d35b5c6c70ebd567d6b05cf4aa6920e5583cbe1368a3

General

Target

JaffaCakes118_e8a8a3ec0c1434244877d35b5c6c70ebd567d6b05cf4aa6920e5583cbe1368a3.exe
Size

198KB
MD5

9f36cc0f500a4336e45f79d02b7c93bf
SHA1

8b2c7738359e872dce4f0ed77f496eeab3f74ec3
SHA256

e8a8a3ec0c1434244877d35b5c6c70ebd567d6b05cf4aa6920e5583cbe1368a3
SHA512

33085d6f1ee3007fa665f2a4a3ca77bdc1bafbee84793569bd8aa37f6f06e8f54c85dd16fa184e5698bc2ce3f9047de4f38387c05b6e060891d528afd86aba7e
SSDEEP

3072:fe68IejEfEJVHXvOZhG5uiMx4eqW3J4X/4qfP3f8DEbLB6klGfLIQVNWBz:fe2ewf4lfdyNdqfn8DEbLB6k8Txql

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
1000	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\pmnfbtcn\ImagePath = "C:\\Windows\\SysWOW64\\pmnfbtcn\\tnjpakci.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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	JaffaCakes118_e8a8a3ec0c1434244877d35b5c6c70ebd567d6b05cf4aa6920e5583cbe1368a3.exe

Deletes itself 1 IoCs

pid	Process
4432	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1244	tnjpakci.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1244 set thread context of 4432	1244	tnjpakci.exe	99

Launches sc.exe 3 IoCs

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

pid	Process
4404	sc.exe
3736	sc.exe
1652	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_e8a8a3ec0c1434244877d35b5c6c70ebd567d6b05cf4aa6920e5583cbe1368a3.exe
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	tnjpakci.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1288 wrote to memory of 1896	1288	JaffaCakes118_e8a8a3ec0c1434244877d35b5c6c70ebd567d6b05cf4aa6920e5583cbe1368a3.exe	82
PID 1288 wrote to memory of 1896	1288	JaffaCakes118_e8a8a3ec0c1434244877d35b5c6c70ebd567d6b05cf4aa6920e5583cbe1368a3.exe	82
PID 1288 wrote to memory of 1896	1288	JaffaCakes118_e8a8a3ec0c1434244877d35b5c6c70ebd567d6b05cf4aa6920e5583cbe1368a3.exe	82
PID 1288 wrote to memory of 2068	1288	JaffaCakes118_e8a8a3ec0c1434244877d35b5c6c70ebd567d6b05cf4aa6920e5583cbe1368a3.exe	84
PID 1288 wrote to memory of 2068	1288	JaffaCakes118_e8a8a3ec0c1434244877d35b5c6c70ebd567d6b05cf4aa6920e5583cbe1368a3.exe	84
PID 1288 wrote to memory of 2068	1288	JaffaCakes118_e8a8a3ec0c1434244877d35b5c6c70ebd567d6b05cf4aa6920e5583cbe1368a3.exe	84
PID 1288 wrote to memory of 1652	1288	JaffaCakes118_e8a8a3ec0c1434244877d35b5c6c70ebd567d6b05cf4aa6920e5583cbe1368a3.exe	86
PID 1288 wrote to memory of 1652	1288	JaffaCakes118_e8a8a3ec0c1434244877d35b5c6c70ebd567d6b05cf4aa6920e5583cbe1368a3.exe	86
PID 1288 wrote to memory of 1652	1288	JaffaCakes118_e8a8a3ec0c1434244877d35b5c6c70ebd567d6b05cf4aa6920e5583cbe1368a3.exe	86
PID 1288 wrote to memory of 4404	1288	JaffaCakes118_e8a8a3ec0c1434244877d35b5c6c70ebd567d6b05cf4aa6920e5583cbe1368a3.exe	88
PID 1288 wrote to memory of 4404	1288	JaffaCakes118_e8a8a3ec0c1434244877d35b5c6c70ebd567d6b05cf4aa6920e5583cbe1368a3.exe	88
PID 1288 wrote to memory of 4404	1288	JaffaCakes118_e8a8a3ec0c1434244877d35b5c6c70ebd567d6b05cf4aa6920e5583cbe1368a3.exe	88
PID 1288 wrote to memory of 3736	1288	JaffaCakes118_e8a8a3ec0c1434244877d35b5c6c70ebd567d6b05cf4aa6920e5583cbe1368a3.exe	90
PID 1288 wrote to memory of 3736	1288	JaffaCakes118_e8a8a3ec0c1434244877d35b5c6c70ebd567d6b05cf4aa6920e5583cbe1368a3.exe	90
PID 1288 wrote to memory of 3736	1288	JaffaCakes118_e8a8a3ec0c1434244877d35b5c6c70ebd567d6b05cf4aa6920e5583cbe1368a3.exe	90
PID 1288 wrote to memory of 1000	1288	JaffaCakes118_e8a8a3ec0c1434244877d35b5c6c70ebd567d6b05cf4aa6920e5583cbe1368a3.exe	95
PID 1288 wrote to memory of 1000	1288	JaffaCakes118_e8a8a3ec0c1434244877d35b5c6c70ebd567d6b05cf4aa6920e5583cbe1368a3.exe	95
PID 1288 wrote to memory of 1000	1288	JaffaCakes118_e8a8a3ec0c1434244877d35b5c6c70ebd567d6b05cf4aa6920e5583cbe1368a3.exe	95
PID 1244 wrote to memory of 4432	1244	tnjpakci.exe	99
PID 1244 wrote to memory of 4432	1244	tnjpakci.exe	99
PID 1244 wrote to memory of 4432	1244	tnjpakci.exe	99
PID 1244 wrote to memory of 4432	1244	tnjpakci.exe	99
PID 1244 wrote to memory of 4432	1244	tnjpakci.exe	99

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e8a8a3ec0c1434244877d35b5c6c70ebd567d6b05cf4aa6920e5583cbe1368a3.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e8a8a3ec0c1434244877d35b5c6c70ebd567d6b05cf4aa6920e5583cbe1368a3.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1288
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pmnfbtcn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1896
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tnjpakci.exe" C:\Windows\SysWOW64\pmnfbtcn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2068
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create pmnfbtcn binPath= "C:\Windows\SysWOW64\pmnfbtcn\tnjpakci.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e8a8a3ec0c1434244877d35b5c6c70ebd567d6b05cf4aa6920e5583cbe1368a3.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1652
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description pmnfbtcn "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4404
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start pmnfbtcn
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3736
- 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:1000

C:\Windows\SysWOW64\pmnfbtcn\tnjpakci.exe
C:\Windows\SysWOW64\pmnfbtcn\tnjpakci.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e8a8a3ec0c1434244877d35b5c6c70ebd567d6b05cf4aa6920e5583cbe1368a3.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1244
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4432

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\tnjpakci.exe

Filesize
12.0MB

MD5
a21739bfd6eafc94ec0fd22de17fe913

SHA1
c96188603959e910e220d1f40ab570183d170dda

SHA256
1fc4496f564a0a889a9f150574076013ba250d3107a095f5287b04b60cdd2474

SHA512
757a9af6d22b455d43d60331637fd7ab1101d0563e03cf739a4e622c757db84d68cf0fbb3fb02d671ce70fa377964c768713d7c0b4e0a9f50b449428c6ca74f3

Download Submit
memory/1244-13-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/1244-12-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/1244-11-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/1244-18-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/1288-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1288-2-0x00000000020D0000-0x00000000020E3000-memory.dmp

Filesize
76KB

Download
memory/1288-9-0x00000000020D0000-0x00000000020E3000-memory.dmp

Filesize
76KB

Download
memory/1288-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1288-8-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/1288-1-0x0000000000550000-0x0000000000650000-memory.dmp

Filesize
1024KB

Download
memory/4432-16-0x0000000000A30000-0x0000000000A45000-memory.dmp

Filesize
84KB

Download
memory/4432-14-0x0000000000A30000-0x0000000000A45000-memory.dmp

Filesize
84KB

Download
memory/4432-19-0x0000000000A30000-0x0000000000A45000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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