tofsee | 3ed349f289415a1ae10ad123d27c2b644e337617a75dc848e70e0a3cd13a5fe3

General

Target

ff2d2bae6d666f08cdf03a9fe0111653_JaffaCakes118.exe
Size

14.1MB
MD5

ff2d2bae6d666f08cdf03a9fe0111653
SHA1

b1c17ae2eb91b72ecea9274644b18e06e44077cd
SHA256

3ed349f289415a1ae10ad123d27c2b644e337617a75dc848e70e0a3cd13a5fe3
SHA512

48a618e88a077848f2ca3786be9a5b1c4ef9fa862097186c3ae95046c551dd0c004dc05ecff6893c717d4c14eb0d15b2d206575306eaa45473f74b291019201f
SSDEEP

6144:f5VCb4QuzFZpIozzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzr:h8NKFZp

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
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

4904 netsh.exe

pid	process
4904	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\zpqtkvtn\ImagePath = "C:\\Windows\\SysWOW64\\zpqtkvtn\\viwzbbzm.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

Processes:

ff2d2bae6d666f08cdf03a9fe0111653_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	ff2d2bae6d666f08cdf03a9fe0111653_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

3132 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

viwzbbzm.exe

pid process

704 viwzbbzm.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

viwzbbzm.exe

description pid process target process

PID 704 set thread context of 3132 704 viwzbbzm.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

3528 sc.exe
5116 sc.exe
2588 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3132	svchost.exe

pid	process
704	viwzbbzm.exe

description	pid	process	target process
PID 704 set thread context of 3132	704	viwzbbzm.exe	svchost.exe

pid	process
3528	sc.exe
5116	sc.exe
2588	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

ff2d2bae6d666f08cdf03a9fe0111653_JaffaCakes118.exeviwzbbzm.exe

description	pid	process	target process
PID 2976 wrote to memory of 1736	2976	ff2d2bae6d666f08cdf03a9fe0111653_JaffaCakes118.exe	cmd.exe
PID 2976 wrote to memory of 1736	2976	ff2d2bae6d666f08cdf03a9fe0111653_JaffaCakes118.exe	cmd.exe
PID 2976 wrote to memory of 1736	2976	ff2d2bae6d666f08cdf03a9fe0111653_JaffaCakes118.exe	cmd.exe
PID 2976 wrote to memory of 720	2976	ff2d2bae6d666f08cdf03a9fe0111653_JaffaCakes118.exe	cmd.exe
PID 2976 wrote to memory of 720	2976	ff2d2bae6d666f08cdf03a9fe0111653_JaffaCakes118.exe	cmd.exe
PID 2976 wrote to memory of 720	2976	ff2d2bae6d666f08cdf03a9fe0111653_JaffaCakes118.exe	cmd.exe
PID 2976 wrote to memory of 3528	2976	ff2d2bae6d666f08cdf03a9fe0111653_JaffaCakes118.exe	sc.exe
PID 2976 wrote to memory of 3528	2976	ff2d2bae6d666f08cdf03a9fe0111653_JaffaCakes118.exe	sc.exe
PID 2976 wrote to memory of 3528	2976	ff2d2bae6d666f08cdf03a9fe0111653_JaffaCakes118.exe	sc.exe
PID 2976 wrote to memory of 5116	2976	ff2d2bae6d666f08cdf03a9fe0111653_JaffaCakes118.exe	sc.exe
PID 2976 wrote to memory of 5116	2976	ff2d2bae6d666f08cdf03a9fe0111653_JaffaCakes118.exe	sc.exe
PID 2976 wrote to memory of 5116	2976	ff2d2bae6d666f08cdf03a9fe0111653_JaffaCakes118.exe	sc.exe
PID 2976 wrote to memory of 2588	2976	ff2d2bae6d666f08cdf03a9fe0111653_JaffaCakes118.exe	sc.exe
PID 2976 wrote to memory of 2588	2976	ff2d2bae6d666f08cdf03a9fe0111653_JaffaCakes118.exe	sc.exe
PID 2976 wrote to memory of 2588	2976	ff2d2bae6d666f08cdf03a9fe0111653_JaffaCakes118.exe	sc.exe
PID 704 wrote to memory of 3132	704	viwzbbzm.exe	svchost.exe
PID 704 wrote to memory of 3132	704	viwzbbzm.exe	svchost.exe
PID 704 wrote to memory of 3132	704	viwzbbzm.exe	svchost.exe
PID 704 wrote to memory of 3132	704	viwzbbzm.exe	svchost.exe
PID 704 wrote to memory of 3132	704	viwzbbzm.exe	svchost.exe
PID 2976 wrote to memory of 4904	2976	ff2d2bae6d666f08cdf03a9fe0111653_JaffaCakes118.exe	netsh.exe
PID 2976 wrote to memory of 4904	2976	ff2d2bae6d666f08cdf03a9fe0111653_JaffaCakes118.exe	netsh.exe
PID 2976 wrote to memory of 4904	2976	ff2d2bae6d666f08cdf03a9fe0111653_JaffaCakes118.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\ff2d2bae6d666f08cdf03a9fe0111653_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ff2d2bae6d666f08cdf03a9fe0111653_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2976

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zpqtkvtn\
2⤵
PID:1736

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\viwzbbzm.exe" C:\Windows\SysWOW64\zpqtkvtn\
2⤵
PID:720

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create zpqtkvtn binPath= "C:\Windows\SysWOW64\zpqtkvtn\viwzbbzm.exe /d\"C:\Users\Admin\AppData\Local\Temp\ff2d2bae6d666f08cdf03a9fe0111653_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:3528

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description zpqtkvtn "wifi internet conection"
2⤵
- Launches sc.exe
PID:5116

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start zpqtkvtn
2⤵
- Launches sc.exe
PID:2588

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:4904

C:\Windows\SysWOW64\zpqtkvtn\viwzbbzm.exe
C:\Windows\SysWOW64\zpqtkvtn\viwzbbzm.exe /d"C:\Users\Admin\AppData\Local\Temp\ff2d2bae6d666f08cdf03a9fe0111653_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:704

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:3132

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

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

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\viwzbbzm.exe
Filesize
12.7MB

MD5
02e726d016917df79b2fada254dfac4b

SHA1
8fd9e92916ce32bfc77a881606163f696b0e4ded

SHA256
55ccd7c08fff8e223ab36cf2ab8debdb7bf901a866c367e1b6f5a855520c2ca9

SHA512
019d290871cfc386e9ac47390910878804748c5bc330e654419644f0e1c4559dcd6faaed1d56691859f3b01eb400915c2710e007c118fbc7c7c0b08a263c354b

Download Submit
memory/3132-3-0x0000000000810000-0x0000000000825000-memory.dmp

Filesize
84KB

Download
memory/3132-6-0x0000000000810000-0x0000000000825000-memory.dmp

Filesize
84KB

Download
memory/3132-7-0x0000000000810000-0x0000000000825000-memory.dmp

Filesize
84KB

Download
memory/3132-8-0x0000000000810000-0x0000000000825000-memory.dmp

Filesize
84KB

Download
memory/3132-9-0x0000000000810000-0x0000000000825000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads