tofsee | 9eaf3abe529ee8d32d56010c1995a57c5b471e45590d6186cbbc32f734fcd2fc

General

Target

f4379df92ea34be1cb41c7e3536ecb0c_JaffaCakes118.exe
Size

12.8MB
MD5

f4379df92ea34be1cb41c7e3536ecb0c
SHA1

82206de9b5c6c49ed2d50670f5c7864d3c5b8585
SHA256

9eaf3abe529ee8d32d56010c1995a57c5b471e45590d6186cbbc32f734fcd2fc
SHA512

611aae0075b43c8903d3a2637b1927009ed7742999784548a167deff7e7d73f04def46ce802757c4372cfa1238f32d275279afec9de6f4f865c343021da3e986
SSDEEP

24576:PUqa71YB5DHlommmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmX:PF15

Score

10^/10

tofsee evasion persistence 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\nbairrra = "0"	svchost.exe

Creates new service(s) 1 TTPs
persistence

Windows Service
T1543.003
Modifies Windows Firewall 2 TTPs 1 IoCs
evasion

Windows Service
T1543.003

Disable or Modify System Firewall
T1562.004

Processes:

netsh.exe

pid process

2056 netsh.exe

pid	process
2056	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\nbairrra\ImagePath = "C:\\Windows\\SysWOW64\\nbairrra\\erndlsnx.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2400 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

erndlsnx.exe

pid process

2788 erndlsnx.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

erndlsnx.exe

description pid process target process

PID 2788 set thread context of 2400 2788 erndlsnx.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

2732 sc.exe
2652 sc.exe
2708 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2400	svchost.exe

pid	process
2788	erndlsnx.exe

description	pid	process	target process
PID 2788 set thread context of 2400	2788	erndlsnx.exe	svchost.exe

pid	process
2732	sc.exe
2652	sc.exe
2708	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

f4379df92ea34be1cb41c7e3536ecb0c_JaffaCakes118.exeerndlsnx.exe

description	pid	process	target process
PID 2020 wrote to memory of 1152	2020	f4379df92ea34be1cb41c7e3536ecb0c_JaffaCakes118.exe	cmd.exe
PID 2020 wrote to memory of 1152	2020	f4379df92ea34be1cb41c7e3536ecb0c_JaffaCakes118.exe	cmd.exe
PID 2020 wrote to memory of 1152	2020	f4379df92ea34be1cb41c7e3536ecb0c_JaffaCakes118.exe	cmd.exe
PID 2020 wrote to memory of 1152	2020	f4379df92ea34be1cb41c7e3536ecb0c_JaffaCakes118.exe	cmd.exe
PID 2020 wrote to memory of 2980	2020	f4379df92ea34be1cb41c7e3536ecb0c_JaffaCakes118.exe	cmd.exe
PID 2020 wrote to memory of 2980	2020	f4379df92ea34be1cb41c7e3536ecb0c_JaffaCakes118.exe	cmd.exe
PID 2020 wrote to memory of 2980	2020	f4379df92ea34be1cb41c7e3536ecb0c_JaffaCakes118.exe	cmd.exe
PID 2020 wrote to memory of 2980	2020	f4379df92ea34be1cb41c7e3536ecb0c_JaffaCakes118.exe	cmd.exe
PID 2020 wrote to memory of 2652	2020	f4379df92ea34be1cb41c7e3536ecb0c_JaffaCakes118.exe	sc.exe
PID 2020 wrote to memory of 2652	2020	f4379df92ea34be1cb41c7e3536ecb0c_JaffaCakes118.exe	sc.exe
PID 2020 wrote to memory of 2652	2020	f4379df92ea34be1cb41c7e3536ecb0c_JaffaCakes118.exe	sc.exe
PID 2020 wrote to memory of 2652	2020	f4379df92ea34be1cb41c7e3536ecb0c_JaffaCakes118.exe	sc.exe
PID 2020 wrote to memory of 2708	2020	f4379df92ea34be1cb41c7e3536ecb0c_JaffaCakes118.exe	sc.exe
PID 2020 wrote to memory of 2708	2020	f4379df92ea34be1cb41c7e3536ecb0c_JaffaCakes118.exe	sc.exe
PID 2020 wrote to memory of 2708	2020	f4379df92ea34be1cb41c7e3536ecb0c_JaffaCakes118.exe	sc.exe
PID 2020 wrote to memory of 2708	2020	f4379df92ea34be1cb41c7e3536ecb0c_JaffaCakes118.exe	sc.exe
PID 2020 wrote to memory of 2732	2020	f4379df92ea34be1cb41c7e3536ecb0c_JaffaCakes118.exe	sc.exe
PID 2020 wrote to memory of 2732	2020	f4379df92ea34be1cb41c7e3536ecb0c_JaffaCakes118.exe	sc.exe
PID 2020 wrote to memory of 2732	2020	f4379df92ea34be1cb41c7e3536ecb0c_JaffaCakes118.exe	sc.exe
PID 2020 wrote to memory of 2732	2020	f4379df92ea34be1cb41c7e3536ecb0c_JaffaCakes118.exe	sc.exe
PID 2020 wrote to memory of 2056	2020	f4379df92ea34be1cb41c7e3536ecb0c_JaffaCakes118.exe	netsh.exe
PID 2020 wrote to memory of 2056	2020	f4379df92ea34be1cb41c7e3536ecb0c_JaffaCakes118.exe	netsh.exe
PID 2020 wrote to memory of 2056	2020	f4379df92ea34be1cb41c7e3536ecb0c_JaffaCakes118.exe	netsh.exe
PID 2020 wrote to memory of 2056	2020	f4379df92ea34be1cb41c7e3536ecb0c_JaffaCakes118.exe	netsh.exe
PID 2788 wrote to memory of 2400	2788	erndlsnx.exe	svchost.exe
PID 2788 wrote to memory of 2400	2788	erndlsnx.exe	svchost.exe
PID 2788 wrote to memory of 2400	2788	erndlsnx.exe	svchost.exe
PID 2788 wrote to memory of 2400	2788	erndlsnx.exe	svchost.exe
PID 2788 wrote to memory of 2400	2788	erndlsnx.exe	svchost.exe
PID 2788 wrote to memory of 2400	2788	erndlsnx.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f4379df92ea34be1cb41c7e3536ecb0c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f4379df92ea34be1cb41c7e3536ecb0c_JaffaCakes118.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2020

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nbairrra\
2⤵
PID:1152

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\erndlsnx.exe" C:\Windows\SysWOW64\nbairrra\
2⤵
PID:2980

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create nbairrra binPath= "C:\Windows\SysWOW64\nbairrra\erndlsnx.exe /d\"C:\Users\Admin\AppData\Local\Temp\f4379df92ea34be1cb41c7e3536ecb0c_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:2652

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description nbairrra "wifi internet conection"
2⤵
- Launches sc.exe
PID:2708

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start nbairrra
2⤵
- Launches sc.exe
PID:2732

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
PID:2056

C:\Windows\SysWOW64\nbairrra\erndlsnx.exe
C:\Windows\SysWOW64\nbairrra\erndlsnx.exe /d"C:\Users\Admin\AppData\Local\Temp\f4379df92ea34be1cb41c7e3536ecb0c_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2788

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:2400

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

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

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\erndlsnx.exe
Filesize
10.6MB

MD5
e99893b3f0be566d2877469cab934ec4

SHA1
77fc81095f87e0ce1394188aea90802c535b14e4

SHA256
4238d19792154fe016f9e99ca388078e5f326d47c1baefd18895013a9908dcc7

SHA512
ff0711ac895eb5643b088357c46ec0dea84ed30bad86a4a715e4b2654cd167c62c8efd560c1788c007f94fae3255fff54a7c1d494d29bb633295f89425266b28

Download Submit
memory/2020-2-0x0000000000230000-0x0000000000243000-memory.dmp

Filesize
76KB

Download
memory/2020-3-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/2020-8-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/2020-9-0x0000000000230000-0x0000000000243000-memory.dmp

Filesize
76KB

Download
memory/2020-1-0x00000000005B0000-0x00000000006B0000-memory.dmp

Filesize
1024KB

Download
memory/2400-20-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2400-10-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2400-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2400-22-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2400-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2400-21-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2788-11-0x00000000005A0000-0x00000000006A0000-memory.dmp

Filesize
1024KB

Download
memory/2788-17-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/2788-13-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads