tofsee | 13ff4676c5a7e487edda736c39cc17cef014686f02b0109a06b5471f5e46f2c2

General

Target

JaffaCakes118_13ff4676c5a7e487edda736c39cc17cef014686f02b0109a06b5471f5e46f2c2.exe
Size

138KB
MD5

b6486108ef7350618488a8ecee3d9782
SHA1

09a6f333cf62f3c754e1317abdfa0d1146a30652
SHA256

13ff4676c5a7e487edda736c39cc17cef014686f02b0109a06b5471f5e46f2c2
SHA512

949f233b393ee14886e022cc959457f64b84f0367b2a7a2263634a71c31e7cc6b2c347d2010a3d1376dd53dc17c52aa9b0a1a2706eeaebac5926d574325699ca
SSDEEP

3072:zPlxLfHhPIJbhanKUqs+r55shCxiSdzZj4:zvDBIJbh/dPM6JL

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
2176	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\sljkebqn\ImagePath = "C:\\Windows\\SysWOW64\\sljkebqn\\rpzxxnwm.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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	JaffaCakes118_13ff4676c5a7e487edda736c39cc17cef014686f02b0109a06b5471f5e46f2c2.exe

Deletes itself 1 IoCs

pid	Process
1032	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4196	rpzxxnwm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4196 set thread context of 1032	4196	rpzxxnwm.exe	106

Launches sc.exe 3 IoCs

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

pid	Process
2704	sc.exe
3856	sc.exe
1816	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
3260	716	WerFault.exe	82
4008	4196	WerFault.exe	95

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_13ff4676c5a7e487edda736c39cc17cef014686f02b0109a06b5471f5e46f2c2.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	rpzxxnwm.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 716 wrote to memory of 2948	716	JaffaCakes118_13ff4676c5a7e487edda736c39cc17cef014686f02b0109a06b5471f5e46f2c2.exe	83
PID 716 wrote to memory of 2948	716	JaffaCakes118_13ff4676c5a7e487edda736c39cc17cef014686f02b0109a06b5471f5e46f2c2.exe	83
PID 716 wrote to memory of 2948	716	JaffaCakes118_13ff4676c5a7e487edda736c39cc17cef014686f02b0109a06b5471f5e46f2c2.exe	83
PID 716 wrote to memory of 1164	716	JaffaCakes118_13ff4676c5a7e487edda736c39cc17cef014686f02b0109a06b5471f5e46f2c2.exe	85
PID 716 wrote to memory of 1164	716	JaffaCakes118_13ff4676c5a7e487edda736c39cc17cef014686f02b0109a06b5471f5e46f2c2.exe	85
PID 716 wrote to memory of 1164	716	JaffaCakes118_13ff4676c5a7e487edda736c39cc17cef014686f02b0109a06b5471f5e46f2c2.exe	85
PID 716 wrote to memory of 3856	716	JaffaCakes118_13ff4676c5a7e487edda736c39cc17cef014686f02b0109a06b5471f5e46f2c2.exe	87
PID 716 wrote to memory of 3856	716	JaffaCakes118_13ff4676c5a7e487edda736c39cc17cef014686f02b0109a06b5471f5e46f2c2.exe	87
PID 716 wrote to memory of 3856	716	JaffaCakes118_13ff4676c5a7e487edda736c39cc17cef014686f02b0109a06b5471f5e46f2c2.exe	87
PID 716 wrote to memory of 1816	716	JaffaCakes118_13ff4676c5a7e487edda736c39cc17cef014686f02b0109a06b5471f5e46f2c2.exe	89
PID 716 wrote to memory of 1816	716	JaffaCakes118_13ff4676c5a7e487edda736c39cc17cef014686f02b0109a06b5471f5e46f2c2.exe	89
PID 716 wrote to memory of 1816	716	JaffaCakes118_13ff4676c5a7e487edda736c39cc17cef014686f02b0109a06b5471f5e46f2c2.exe	89
PID 716 wrote to memory of 2704	716	JaffaCakes118_13ff4676c5a7e487edda736c39cc17cef014686f02b0109a06b5471f5e46f2c2.exe	93
PID 716 wrote to memory of 2704	716	JaffaCakes118_13ff4676c5a7e487edda736c39cc17cef014686f02b0109a06b5471f5e46f2c2.exe	93
PID 716 wrote to memory of 2704	716	JaffaCakes118_13ff4676c5a7e487edda736c39cc17cef014686f02b0109a06b5471f5e46f2c2.exe	93
PID 716 wrote to memory of 2176	716	JaffaCakes118_13ff4676c5a7e487edda736c39cc17cef014686f02b0109a06b5471f5e46f2c2.exe	96
PID 716 wrote to memory of 2176	716	JaffaCakes118_13ff4676c5a7e487edda736c39cc17cef014686f02b0109a06b5471f5e46f2c2.exe	96
PID 716 wrote to memory of 2176	716	JaffaCakes118_13ff4676c5a7e487edda736c39cc17cef014686f02b0109a06b5471f5e46f2c2.exe	96
PID 4196 wrote to memory of 1032	4196	rpzxxnwm.exe	106
PID 4196 wrote to memory of 1032	4196	rpzxxnwm.exe	106
PID 4196 wrote to memory of 1032	4196	rpzxxnwm.exe	106
PID 4196 wrote to memory of 1032	4196	rpzxxnwm.exe	106
PID 4196 wrote to memory of 1032	4196	rpzxxnwm.exe	106

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_13ff4676c5a7e487edda736c39cc17cef014686f02b0109a06b5471f5e46f2c2.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_13ff4676c5a7e487edda736c39cc17cef014686f02b0109a06b5471f5e46f2c2.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:716
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\sljkebqn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2948
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rpzxxnwm.exe" C:\Windows\SysWOW64\sljkebqn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1164
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create sljkebqn binPath= "C:\Windows\SysWOW64\sljkebqn\rpzxxnwm.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_13ff4676c5a7e487edda736c39cc17cef014686f02b0109a06b5471f5e46f2c2.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3856
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description sljkebqn "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1816
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start sljkebqn
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2704
- 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:2176
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 716 -s 1040
  2⤵
  - Program crash
  PID:3260

C:\Windows\SysWOW64\sljkebqn\rpzxxnwm.exe
C:\Windows\SysWOW64\sljkebqn\rpzxxnwm.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_13ff4676c5a7e487edda736c39cc17cef014686f02b0109a06b5471f5e46f2c2.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4196
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1032
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4196 -s 512
  2⤵
  - Program crash
  PID:4008

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 716 -ip 716
1⤵
PID:3748

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 4196 -ip 4196
1⤵
PID:4800

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\rpzxxnwm.exe

Filesize
12.8MB

MD5
916f2de972027c314db8ec55156987a5

SHA1
bf8a13540b886d8d90ee617a9e340362cfa2f8e8

SHA256
555c9be4f6c1cb17bed5900288c923ac9acef4e227c45cb26e0e23a48a670e24

SHA512
0bc2e3018ffc39c2a4bd731ae3ab08b29504262de594a15c9dea89e0c748e11c393538a23537430fbb387e614d77e04bdf1563ab874c0fce0f134488b22c5d3f

Download Submit
memory/716-9-0x0000000000760000-0x0000000000773000-memory.dmp

Filesize
76KB

Download
memory/716-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/716-2-0x0000000000760000-0x0000000000773000-memory.dmp

Filesize
76KB

Download
memory/716-8-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/716-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/716-1-0x00000000007A0000-0x00000000008A0000-memory.dmp

Filesize
1024KB

Download
memory/1032-16-0x00000000003D0000-0x00000000003E5000-memory.dmp

Filesize
84KB

Download
memory/1032-14-0x00000000003D0000-0x00000000003E5000-memory.dmp

Filesize
84KB

Download
memory/1032-17-0x00000000003D0000-0x00000000003E5000-memory.dmp

Filesize
84KB

Download
memory/4196-11-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/4196-13-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/4196-12-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/4196-19-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads