tofsee | 76354adc38ca087cde5e61c9249486df3d2d01939587740c0dbc836b97383ad7

General

Target

daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe
Size

12.4MB
MD5

daa374c245a6a97a5f8c9f6dc178f6ea
SHA1

641a53f516c870ceb2c078482aec3cea8eca0937
SHA256

76354adc38ca087cde5e61c9249486df3d2d01939587740c0dbc836b97383ad7
SHA512

d9bbfe065875bd4f21419a94e50b632c82142527713f7b2098fba0a62ae033e9fe704c9cc66dd03a002c39b3c8ccbceaca15533d2ce5ed44aaa4f9da1e26f3e6
SSDEEP

393216:9YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYn:

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

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\umribnxh = "0"	svchost.exe

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

Processes:

netsh.exe

pid process

2648 netsh.exe

pid	process
2648	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\umribnxh\ImagePath = "C:\\Windows\\SysWOW64\\umribnxh\\icyepzrx.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1496 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

icyepzrx.exe

pid process

2560 icyepzrx.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

icyepzrx.exe

description pid process target process

PID 2560 set thread context of 1496 2560 icyepzrx.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

2804 sc.exe
2868 sc.exe
2528 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1496	svchost.exe

pid	process
2560	icyepzrx.exe

description	pid	process	target process
PID 2560 set thread context of 1496	2560	icyepzrx.exe	svchost.exe

pid	process
2804	sc.exe
2868	sc.exe
2528	sc.exe

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

Processes:

netsh.exe

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

Processes:

daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exesc.exenetsh.exesc.exeicyepzrx.exesvchost.execmd.execmd.exesc.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icyepzrx.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exeicyepzrx.exe

description	pid	process	target process
PID 2656 wrote to memory of 2684	2656	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	cmd.exe
PID 2656 wrote to memory of 2684	2656	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	cmd.exe
PID 2656 wrote to memory of 2684	2656	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	cmd.exe
PID 2656 wrote to memory of 2684	2656	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	cmd.exe
PID 2656 wrote to memory of 2788	2656	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	cmd.exe
PID 2656 wrote to memory of 2788	2656	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	cmd.exe
PID 2656 wrote to memory of 2788	2656	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	cmd.exe
PID 2656 wrote to memory of 2788	2656	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	cmd.exe
PID 2656 wrote to memory of 2804	2656	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	sc.exe
PID 2656 wrote to memory of 2804	2656	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	sc.exe
PID 2656 wrote to memory of 2804	2656	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	sc.exe
PID 2656 wrote to memory of 2804	2656	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	sc.exe
PID 2656 wrote to memory of 2868	2656	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	sc.exe
PID 2656 wrote to memory of 2868	2656	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	sc.exe
PID 2656 wrote to memory of 2868	2656	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	sc.exe
PID 2656 wrote to memory of 2868	2656	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	sc.exe
PID 2656 wrote to memory of 2528	2656	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	sc.exe
PID 2656 wrote to memory of 2528	2656	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	sc.exe
PID 2656 wrote to memory of 2528	2656	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	sc.exe
PID 2656 wrote to memory of 2528	2656	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	sc.exe
PID 2656 wrote to memory of 2648	2656	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	netsh.exe
PID 2656 wrote to memory of 2648	2656	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	netsh.exe
PID 2656 wrote to memory of 2648	2656	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	netsh.exe
PID 2656 wrote to memory of 2648	2656	daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe	netsh.exe
PID 2560 wrote to memory of 1496	2560	icyepzrx.exe	svchost.exe
PID 2560 wrote to memory of 1496	2560	icyepzrx.exe	svchost.exe
PID 2560 wrote to memory of 1496	2560	icyepzrx.exe	svchost.exe
PID 2560 wrote to memory of 1496	2560	icyepzrx.exe	svchost.exe
PID 2560 wrote to memory of 1496	2560	icyepzrx.exe	svchost.exe
PID 2560 wrote to memory of 1496	2560	icyepzrx.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2656
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\umribnxh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2684
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\icyepzrx.exe" C:\Windows\SysWOW64\umribnxh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2788
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create umribnxh binPath= "C:\Windows\SysWOW64\umribnxh\icyepzrx.exe /d\"C:\Users\Admin\AppData\Local\Temp\daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2804
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description umribnxh "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2868
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start umribnxh
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2528
- 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:2648

C:\Windows\SysWOW64\umribnxh\icyepzrx.exe
C:\Windows\SysWOW64\umribnxh\icyepzrx.exe /d"C:\Users\Admin\AppData\Local\Temp\daa374c245a6a97a5f8c9f6dc178f6ea_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2560
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1496

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

2

T1562

Disable or Modify System Firewall

1

T1562.004

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

1

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\icyepzrx.exe

Filesize
13.4MB

MD5
c15e6ba1c68731b0dd1cf78ec6944d36

SHA1
f70eaa567fb2cc2aab9eecf6ea411fabf0f2ed07

SHA256
ca47e25222e4507678ef4454cc9db65184dac1c51482c3684a8495f0ef340330

SHA512
840010ce3fda5b0f8aeae078ceec8ad887d8e127c4a00eac000e21931c017922cbc118c90954d004bf31be4b3291f8417759f4f1875b1f892d49315f10ae6497

Download Submit
memory/1496-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/1496-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/1496-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1496-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/1496-16-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/1496-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2560-15-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/2656-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2656-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2656-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2656-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2656-8-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/2656-1-0x00000000004D0000-0x00000000005D0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads