tofsee | bdd7f1c254d2bd154445ab9f0dfb1213c30ffd241720862b5ad561fa1ad198fd

General

Target

JaffaCakes118_bdd7f1c254d2bd154445ab9f0dfb1213c30ffd241720862b5ad561fa1ad198fd.exe
Size

138KB
MD5

b9a33b8cb9f482ff1cb3774e97ead4dd
SHA1

0ba07890880d2d95f45d7c34bba682c1cc66b646
SHA256

bdd7f1c254d2bd154445ab9f0dfb1213c30ffd241720862b5ad561fa1ad198fd
SHA512

544bab5b54ce30cdf91ea970821d4314c34d002d81a139a2ce17eaa7e7997ceb391e19cdb4c44690e0246b51de5e77d0577c3a239996d7b23cf2c6b0515f32fd
SSDEEP

3072:XkhQBATi5WIOdtW3yHFJ55yHNq9MvsTuR6:XnYi51WYq9Mvuu

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
1392	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\qewmnzzn\ImagePath = "C:\\Windows\\SysWOW64\\qewmnzzn\\fmyluhic.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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	JaffaCakes118_bdd7f1c254d2bd154445ab9f0dfb1213c30ffd241720862b5ad561fa1ad198fd.exe

Deletes itself 1 IoCs

pid	Process
5092	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4408	fmyluhic.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4408 set thread context of 5092	4408	fmyluhic.exe	106

Launches sc.exe 3 IoCs

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

pid	Process
1320	sc.exe
4968	sc.exe
1620	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
4016	4336	WerFault.exe	82
4288	4408	WerFault.exe	94

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	fmyluhic.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_bdd7f1c254d2bd154445ab9f0dfb1213c30ffd241720862b5ad561fa1ad198fd.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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4336 wrote to memory of 4296	4336	JaffaCakes118_bdd7f1c254d2bd154445ab9f0dfb1213c30ffd241720862b5ad561fa1ad198fd.exe	84
PID 4336 wrote to memory of 4296	4336	JaffaCakes118_bdd7f1c254d2bd154445ab9f0dfb1213c30ffd241720862b5ad561fa1ad198fd.exe	84
PID 4336 wrote to memory of 4296	4336	JaffaCakes118_bdd7f1c254d2bd154445ab9f0dfb1213c30ffd241720862b5ad561fa1ad198fd.exe	84
PID 4336 wrote to memory of 5084	4336	JaffaCakes118_bdd7f1c254d2bd154445ab9f0dfb1213c30ffd241720862b5ad561fa1ad198fd.exe	86
PID 4336 wrote to memory of 5084	4336	JaffaCakes118_bdd7f1c254d2bd154445ab9f0dfb1213c30ffd241720862b5ad561fa1ad198fd.exe	86
PID 4336 wrote to memory of 5084	4336	JaffaCakes118_bdd7f1c254d2bd154445ab9f0dfb1213c30ffd241720862b5ad561fa1ad198fd.exe	86
PID 4336 wrote to memory of 1320	4336	JaffaCakes118_bdd7f1c254d2bd154445ab9f0dfb1213c30ffd241720862b5ad561fa1ad198fd.exe	88
PID 4336 wrote to memory of 1320	4336	JaffaCakes118_bdd7f1c254d2bd154445ab9f0dfb1213c30ffd241720862b5ad561fa1ad198fd.exe	88
PID 4336 wrote to memory of 1320	4336	JaffaCakes118_bdd7f1c254d2bd154445ab9f0dfb1213c30ffd241720862b5ad561fa1ad198fd.exe	88
PID 4336 wrote to memory of 4968	4336	JaffaCakes118_bdd7f1c254d2bd154445ab9f0dfb1213c30ffd241720862b5ad561fa1ad198fd.exe	90
PID 4336 wrote to memory of 4968	4336	JaffaCakes118_bdd7f1c254d2bd154445ab9f0dfb1213c30ffd241720862b5ad561fa1ad198fd.exe	90
PID 4336 wrote to memory of 4968	4336	JaffaCakes118_bdd7f1c254d2bd154445ab9f0dfb1213c30ffd241720862b5ad561fa1ad198fd.exe	90
PID 4336 wrote to memory of 1620	4336	JaffaCakes118_bdd7f1c254d2bd154445ab9f0dfb1213c30ffd241720862b5ad561fa1ad198fd.exe	92
PID 4336 wrote to memory of 1620	4336	JaffaCakes118_bdd7f1c254d2bd154445ab9f0dfb1213c30ffd241720862b5ad561fa1ad198fd.exe	92
PID 4336 wrote to memory of 1620	4336	JaffaCakes118_bdd7f1c254d2bd154445ab9f0dfb1213c30ffd241720862b5ad561fa1ad198fd.exe	92
PID 4336 wrote to memory of 1392	4336	JaffaCakes118_bdd7f1c254d2bd154445ab9f0dfb1213c30ffd241720862b5ad561fa1ad198fd.exe	95
PID 4336 wrote to memory of 1392	4336	JaffaCakes118_bdd7f1c254d2bd154445ab9f0dfb1213c30ffd241720862b5ad561fa1ad198fd.exe	95
PID 4336 wrote to memory of 1392	4336	JaffaCakes118_bdd7f1c254d2bd154445ab9f0dfb1213c30ffd241720862b5ad561fa1ad198fd.exe	95
PID 4408 wrote to memory of 5092	4408	fmyluhic.exe	106
PID 4408 wrote to memory of 5092	4408	fmyluhic.exe	106
PID 4408 wrote to memory of 5092	4408	fmyluhic.exe	106
PID 4408 wrote to memory of 5092	4408	fmyluhic.exe	106
PID 4408 wrote to memory of 5092	4408	fmyluhic.exe	106

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bdd7f1c254d2bd154445ab9f0dfb1213c30ffd241720862b5ad561fa1ad198fd.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bdd7f1c254d2bd154445ab9f0dfb1213c30ffd241720862b5ad561fa1ad198fd.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4336
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qewmnzzn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4296
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fmyluhic.exe" C:\Windows\SysWOW64\qewmnzzn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5084
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create qewmnzzn binPath= "C:\Windows\SysWOW64\qewmnzzn\fmyluhic.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bdd7f1c254d2bd154445ab9f0dfb1213c30ffd241720862b5ad561fa1ad198fd.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1320
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description qewmnzzn "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4968
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start qewmnzzn
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1620
- 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:1392
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4336 -s 1188
  2⤵
  - Program crash
  PID:4016

C:\Windows\SysWOW64\qewmnzzn\fmyluhic.exe
C:\Windows\SysWOW64\qewmnzzn\fmyluhic.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bdd7f1c254d2bd154445ab9f0dfb1213c30ffd241720862b5ad561fa1ad198fd.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4408
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:5092
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4408 -s 512
  2⤵
  - Program crash
  PID:4288

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 4336 -ip 4336
1⤵
PID:3088

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4408 -ip 4408
1⤵
PID:1420

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\fmyluhic.exe

Filesize
12.1MB

MD5
a7d40e4d509c3d98f08df8be13eb63fe

SHA1
d2fd398c17bd0d1c67086d7b0e59cbfeaaff738f

SHA256
3cdaad304f783ebfe3dc9a3c0c574f4f6cbcfc51d0f8fe5353046e06ac04e947

SHA512
377590b5148f5ccd737655f875d0481ae81a0d63842a64dcc53f541db5ff9b47e08d912429e1352c60800e9786e543ccd6a3954fe5bfcac14cf101da64bac0d8

Download Submit
memory/4336-8-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/4336-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4336-2-0x0000000000750000-0x0000000000763000-memory.dmp

Filesize
76KB

Download
memory/4336-9-0x0000000000750000-0x0000000000763000-memory.dmp

Filesize
76KB

Download
memory/4336-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4336-1-0x0000000000790000-0x0000000000890000-memory.dmp

Filesize
1024KB

Download
memory/4408-11-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/4408-13-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/4408-12-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/4408-19-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/5092-14-0x0000000000720000-0x0000000000735000-memory.dmp

Filesize
84KB

Download
memory/5092-16-0x0000000000720000-0x0000000000735000-memory.dmp

Filesize
84KB

Download
memory/5092-17-0x0000000000720000-0x0000000000735000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads