tofsee | eb23d0babff0e507c1dcf8ba4c6763626972fbcd7a3d18d6408a57063ff841ad

General

Target

JaffaCakes118_eb23d0babff0e507c1dcf8ba4c6763626972fbcd7a3d18d6408a57063ff841ad.exe
Size

147KB
MD5

8c9037ef39252b830c9f423eb5893543
SHA1

080ad0e6b966ff4a1eac5ff53bcd9f6204b2c75e
SHA256

eb23d0babff0e507c1dcf8ba4c6763626972fbcd7a3d18d6408a57063ff841ad
SHA512

9652f12291b3604f2202f8436ed0de6faa746cfb0bfb01500a749d337b3c950dd71aa828e45458e1b07737b8547a6aad10507b33bb0bc3a94dfdc7e7000c6162
SSDEEP

3072:3b60anGsBzXDU0eSPafOWI5DnrcPI1ZeNPDEZYz:3bvantBrDUdJfZIcPI10Dea

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
3496	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\ygfznwwu\ImagePath = "C:\\Windows\\SysWOW64\\ygfznwwu\\iclvilqc.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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	JaffaCakes118_eb23d0babff0e507c1dcf8ba4c6763626972fbcd7a3d18d6408a57063ff841ad.exe

Deletes itself 1 IoCs

pid	Process
840	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2536	iclvilqc.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\‹D$‹L$ƒd	iclvilqc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2536 set thread context of 840	2536	iclvilqc.exe	97

Launches sc.exe 3 IoCs

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

pid	Process
3936	sc.exe
1288	sc.exe
4952	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

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	iclvilqc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_eb23d0babff0e507c1dcf8ba4c6763626972fbcd7a3d18d6408a57063ff841ad.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4808 wrote to memory of 232	4808	JaffaCakes118_eb23d0babff0e507c1dcf8ba4c6763626972fbcd7a3d18d6408a57063ff841ad.exe	83
PID 4808 wrote to memory of 232	4808	JaffaCakes118_eb23d0babff0e507c1dcf8ba4c6763626972fbcd7a3d18d6408a57063ff841ad.exe	83
PID 4808 wrote to memory of 232	4808	JaffaCakes118_eb23d0babff0e507c1dcf8ba4c6763626972fbcd7a3d18d6408a57063ff841ad.exe	83
PID 4808 wrote to memory of 2236	4808	JaffaCakes118_eb23d0babff0e507c1dcf8ba4c6763626972fbcd7a3d18d6408a57063ff841ad.exe	85
PID 4808 wrote to memory of 2236	4808	JaffaCakes118_eb23d0babff0e507c1dcf8ba4c6763626972fbcd7a3d18d6408a57063ff841ad.exe	85
PID 4808 wrote to memory of 2236	4808	JaffaCakes118_eb23d0babff0e507c1dcf8ba4c6763626972fbcd7a3d18d6408a57063ff841ad.exe	85
PID 4808 wrote to memory of 3936	4808	JaffaCakes118_eb23d0babff0e507c1dcf8ba4c6763626972fbcd7a3d18d6408a57063ff841ad.exe	88
PID 4808 wrote to memory of 3936	4808	JaffaCakes118_eb23d0babff0e507c1dcf8ba4c6763626972fbcd7a3d18d6408a57063ff841ad.exe	88
PID 4808 wrote to memory of 3936	4808	JaffaCakes118_eb23d0babff0e507c1dcf8ba4c6763626972fbcd7a3d18d6408a57063ff841ad.exe	88
PID 4808 wrote to memory of 1288	4808	JaffaCakes118_eb23d0babff0e507c1dcf8ba4c6763626972fbcd7a3d18d6408a57063ff841ad.exe	90
PID 4808 wrote to memory of 1288	4808	JaffaCakes118_eb23d0babff0e507c1dcf8ba4c6763626972fbcd7a3d18d6408a57063ff841ad.exe	90
PID 4808 wrote to memory of 1288	4808	JaffaCakes118_eb23d0babff0e507c1dcf8ba4c6763626972fbcd7a3d18d6408a57063ff841ad.exe	90
PID 4808 wrote to memory of 4952	4808	JaffaCakes118_eb23d0babff0e507c1dcf8ba4c6763626972fbcd7a3d18d6408a57063ff841ad.exe	92
PID 4808 wrote to memory of 4952	4808	JaffaCakes118_eb23d0babff0e507c1dcf8ba4c6763626972fbcd7a3d18d6408a57063ff841ad.exe	92
PID 4808 wrote to memory of 4952	4808	JaffaCakes118_eb23d0babff0e507c1dcf8ba4c6763626972fbcd7a3d18d6408a57063ff841ad.exe	92
PID 4808 wrote to memory of 3496	4808	JaffaCakes118_eb23d0babff0e507c1dcf8ba4c6763626972fbcd7a3d18d6408a57063ff841ad.exe	95
PID 4808 wrote to memory of 3496	4808	JaffaCakes118_eb23d0babff0e507c1dcf8ba4c6763626972fbcd7a3d18d6408a57063ff841ad.exe	95
PID 4808 wrote to memory of 3496	4808	JaffaCakes118_eb23d0babff0e507c1dcf8ba4c6763626972fbcd7a3d18d6408a57063ff841ad.exe	95
PID 2536 wrote to memory of 840	2536	iclvilqc.exe	97
PID 2536 wrote to memory of 840	2536	iclvilqc.exe	97
PID 2536 wrote to memory of 840	2536	iclvilqc.exe	97
PID 2536 wrote to memory of 840	2536	iclvilqc.exe	97
PID 2536 wrote to memory of 840	2536	iclvilqc.exe	97

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_eb23d0babff0e507c1dcf8ba4c6763626972fbcd7a3d18d6408a57063ff841ad.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_eb23d0babff0e507c1dcf8ba4c6763626972fbcd7a3d18d6408a57063ff841ad.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4808
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ygfznwwu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:232
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\iclvilqc.exe" C:\Windows\SysWOW64\ygfznwwu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2236
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ygfznwwu binPath= "C:\Windows\SysWOW64\ygfznwwu\iclvilqc.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_eb23d0babff0e507c1dcf8ba4c6763626972fbcd7a3d18d6408a57063ff841ad.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3936
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ygfznwwu "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1288
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ygfznwwu
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4952
- 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:3496

C:\Windows\SysWOW64\ygfznwwu\iclvilqc.exe
C:\Windows\SysWOW64\ygfznwwu\iclvilqc.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_eb23d0babff0e507c1dcf8ba4c6763626972fbcd7a3d18d6408a57063ff841ad.exe"
1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2536
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:840

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\iclvilqc.exe

Filesize
10.7MB

MD5
c9ab7eeba3653db328b9b5c15e0d2b11

SHA1
251e1d4da4b46ee38f4b08c7e3984d7ccb42ab1f

SHA256
2bfb425c20ea2d683e0bc88efca7f035e9c2552a00e053eb8f31ba2f2f59b0d6

SHA512
1ed774431b3a6e13ecf7151059115b48464a9a592b440d7d61966aadbac25d34a5bc1dc1b1cbca1970b43a9a0bc9afe884d0871c04f0d4e4069414b8a0c3dfe4

Download Submit
memory/840-12-0x0000000000B50000-0x0000000000B65000-memory.dmp

Filesize
84KB

Download
memory/840-18-0x0000000000B50000-0x0000000000B65000-memory.dmp

Filesize
84KB

Download
memory/840-17-0x0000000000B50000-0x0000000000B65000-memory.dmp

Filesize
84KB

Download
memory/2536-11-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2536-9-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2536-8-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2536-19-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/4808-1-0x0000000000590000-0x0000000000690000-memory.dmp

Filesize
1024KB

Download
memory/4808-10-0x0000000000590000-0x0000000000690000-memory.dmp

Filesize
1024KB

Download
memory/4808-14-0x00000000021A0000-0x00000000021B3000-memory.dmp

Filesize
76KB

Download
memory/4808-15-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4808-16-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/4808-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4808-2-0x00000000021A0000-0x00000000021B3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads