tofsee | bd131e20e3604c7bf88d2f097f168cc7b0682f07b398dc7273a7ac8b0603c20e

General

Target

e6f23da75ee0c90e4640ee5a5ad01dda_JaffaCakes118.exe
Size

14.3MB
MD5

e6f23da75ee0c90e4640ee5a5ad01dda
SHA1

a08a1b7867ba74b3a7ac7eaf0d9f60c1434b9c1a
SHA256

bd131e20e3604c7bf88d2f097f168cc7b0682f07b398dc7273a7ac8b0603c20e
SHA512

bb355360b340952ebafeec8692f59d67bfbfdfa03e655fb18d53035722d7b6d6a751d3e78c4b5bfa839511f83a0d0c14dc48bdf740d5dc02c67a3d41d3b28562
SSDEEP

196608:phKaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaav:p

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\sravooch = "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

2824 netsh.exe

pid	process
2824	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\sravooch\ImagePath = "C:\\Windows\\SysWOW64\\sravooch\\tamzivwq.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2816 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

tamzivwq.exe

pid process

2736 tamzivwq.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

tamzivwq.exe

description pid process target process

PID 2736 set thread context of 2816 2736 tamzivwq.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

1520 sc.exe
2768 sc.exe
2912 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2816	svchost.exe

pid	process
2736	tamzivwq.exe

description	pid	process	target process
PID 2736 set thread context of 2816	2736	tamzivwq.exe	svchost.exe

pid	process
1520	sc.exe
2768	sc.exe
2912	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:

e6f23da75ee0c90e4640ee5a5ad01dda_JaffaCakes118.execmd.exesvchost.exetamzivwq.execmd.exesc.exesc.exesc.exenetsh.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e6f23da75ee0c90e4640ee5a5ad01dda_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tamzivwq.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

e6f23da75ee0c90e4640ee5a5ad01dda_JaffaCakes118.exetamzivwq.exe

description	pid	process	target process
PID 1748 wrote to memory of 1052	1748	e6f23da75ee0c90e4640ee5a5ad01dda_JaffaCakes118.exe	cmd.exe
PID 1748 wrote to memory of 1052	1748	e6f23da75ee0c90e4640ee5a5ad01dda_JaffaCakes118.exe	cmd.exe
PID 1748 wrote to memory of 1052	1748	e6f23da75ee0c90e4640ee5a5ad01dda_JaffaCakes118.exe	cmd.exe
PID 1748 wrote to memory of 1052	1748	e6f23da75ee0c90e4640ee5a5ad01dda_JaffaCakes118.exe	cmd.exe
PID 1748 wrote to memory of 2452	1748	e6f23da75ee0c90e4640ee5a5ad01dda_JaffaCakes118.exe	cmd.exe
PID 1748 wrote to memory of 2452	1748	e6f23da75ee0c90e4640ee5a5ad01dda_JaffaCakes118.exe	cmd.exe
PID 1748 wrote to memory of 2452	1748	e6f23da75ee0c90e4640ee5a5ad01dda_JaffaCakes118.exe	cmd.exe
PID 1748 wrote to memory of 2452	1748	e6f23da75ee0c90e4640ee5a5ad01dda_JaffaCakes118.exe	cmd.exe
PID 1748 wrote to memory of 1520	1748	e6f23da75ee0c90e4640ee5a5ad01dda_JaffaCakes118.exe	sc.exe
PID 1748 wrote to memory of 1520	1748	e6f23da75ee0c90e4640ee5a5ad01dda_JaffaCakes118.exe	sc.exe
PID 1748 wrote to memory of 1520	1748	e6f23da75ee0c90e4640ee5a5ad01dda_JaffaCakes118.exe	sc.exe
PID 1748 wrote to memory of 1520	1748	e6f23da75ee0c90e4640ee5a5ad01dda_JaffaCakes118.exe	sc.exe
PID 1748 wrote to memory of 2768	1748	e6f23da75ee0c90e4640ee5a5ad01dda_JaffaCakes118.exe	sc.exe
PID 1748 wrote to memory of 2768	1748	e6f23da75ee0c90e4640ee5a5ad01dda_JaffaCakes118.exe	sc.exe
PID 1748 wrote to memory of 2768	1748	e6f23da75ee0c90e4640ee5a5ad01dda_JaffaCakes118.exe	sc.exe
PID 1748 wrote to memory of 2768	1748	e6f23da75ee0c90e4640ee5a5ad01dda_JaffaCakes118.exe	sc.exe
PID 1748 wrote to memory of 2912	1748	e6f23da75ee0c90e4640ee5a5ad01dda_JaffaCakes118.exe	sc.exe
PID 1748 wrote to memory of 2912	1748	e6f23da75ee0c90e4640ee5a5ad01dda_JaffaCakes118.exe	sc.exe
PID 1748 wrote to memory of 2912	1748	e6f23da75ee0c90e4640ee5a5ad01dda_JaffaCakes118.exe	sc.exe
PID 1748 wrote to memory of 2912	1748	e6f23da75ee0c90e4640ee5a5ad01dda_JaffaCakes118.exe	sc.exe
PID 1748 wrote to memory of 2824	1748	e6f23da75ee0c90e4640ee5a5ad01dda_JaffaCakes118.exe	netsh.exe
PID 1748 wrote to memory of 2824	1748	e6f23da75ee0c90e4640ee5a5ad01dda_JaffaCakes118.exe	netsh.exe
PID 1748 wrote to memory of 2824	1748	e6f23da75ee0c90e4640ee5a5ad01dda_JaffaCakes118.exe	netsh.exe
PID 1748 wrote to memory of 2824	1748	e6f23da75ee0c90e4640ee5a5ad01dda_JaffaCakes118.exe	netsh.exe
PID 2736 wrote to memory of 2816	2736	tamzivwq.exe	svchost.exe
PID 2736 wrote to memory of 2816	2736	tamzivwq.exe	svchost.exe
PID 2736 wrote to memory of 2816	2736	tamzivwq.exe	svchost.exe
PID 2736 wrote to memory of 2816	2736	tamzivwq.exe	svchost.exe
PID 2736 wrote to memory of 2816	2736	tamzivwq.exe	svchost.exe
PID 2736 wrote to memory of 2816	2736	tamzivwq.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\e6f23da75ee0c90e4640ee5a5ad01dda_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e6f23da75ee0c90e4640ee5a5ad01dda_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1748

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\sravooch\
2⤵
- System Location Discovery: System Language Discovery
PID:1052

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tamzivwq.exe" C:\Windows\SysWOW64\sravooch\
2⤵
- System Location Discovery: System Language Discovery
PID:2452

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create sravooch binPath= "C:\Windows\SysWOW64\sravooch\tamzivwq.exe /d\"C:\Users\Admin\AppData\Local\Temp\e6f23da75ee0c90e4640ee5a5ad01dda_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:1520

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description sravooch "wifi internet conection"
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:2768

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start sravooch
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:2912

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:2824

C:\Windows\SysWOW64\sravooch\tamzivwq.exe
C:\Windows\SysWOW64\sravooch\tamzivwq.exe /d"C:\Users\Admin\AppData\Local\Temp\e6f23da75ee0c90e4640ee5a5ad01dda_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2736

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:2816

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\tamzivwq.exe

Filesize
12.2MB

MD5
366be17998e89a22591746e7d0719adf

SHA1
effd9be2c7719a9857f0b3b33da5cb52aae9d5e5

SHA256
ec2e43bb0f1e5dc50a8fc34dfda6b9f82e900737e656eaaa256bc60d75d2d45a

SHA512
06472b1695fa03b4b1833ab3ba253bbde20f2334b8701ba7c4455e298b71d35ca805c4392a1e202920e56bb5924626a4924a1904e654035a30fec1de48dbd7c4

Download Submit
memory/1748-8-0x0000000000400000-0x000000000086F000-memory.dmp

Filesize
4.4MB

Download
memory/1748-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1748-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1748-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1748-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1748-1-0x0000000000A10000-0x0000000000B10000-memory.dmp

Filesize
1024KB

Download
memory/2736-17-0x0000000000400000-0x000000000086F000-memory.dmp

Filesize
4.4MB

Download
memory/2816-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2816-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2816-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2816-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2816-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads