tofsee | 0458983712551856bbe9a43e57f2171cb6a11ca2ba7fb5cfbf70d937a9d52764

General

Target

fe7a83b2a9459c727de31bf862e8b412_JaffaCakes118.exe
Size

13.1MB
MD5

fe7a83b2a9459c727de31bf862e8b412
SHA1

37cf0cf28262bfb9952fe203d09102ab00361c59
SHA256

0458983712551856bbe9a43e57f2171cb6a11ca2ba7fb5cfbf70d937a9d52764
SHA512

089ce3de2784486fe479e893da198c9de36cac7f8d4d4b72b0290892e3eb00ed829cb9b5794f8333857c6ad2f546f38df4ae9d19cb2a6c05dd17d6d3300b1296
SSDEEP

49152:f3Skkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk:f3

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.6

lazystax.ru

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\wkrmfvus = "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

2548 netsh.exe

pid	process
2548	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\wkrmfvus\ImagePath = "C:\\Windows\\SysWOW64\\wkrmfvus\\ntephwqc.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2580 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

ntephwqc.exe

pid process

2436 ntephwqc.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

ntephwqc.exe

description pid process target process

PID 2436 set thread context of 2580 2436 ntephwqc.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

2564 sc.exe
2756 sc.exe
2704 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2580	svchost.exe

pid	process
2436	ntephwqc.exe

description	pid	process	target process
PID 2436 set thread context of 2580	2436	ntephwqc.exe	svchost.exe

pid	process
2564	sc.exe
2756	sc.exe
2704	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

fe7a83b2a9459c727de31bf862e8b412_JaffaCakes118.exentephwqc.exe

description	pid	process	target process
PID 1876 wrote to memory of 2960	1876	fe7a83b2a9459c727de31bf862e8b412_JaffaCakes118.exe	cmd.exe
PID 1876 wrote to memory of 2960	1876	fe7a83b2a9459c727de31bf862e8b412_JaffaCakes118.exe	cmd.exe
PID 1876 wrote to memory of 2960	1876	fe7a83b2a9459c727de31bf862e8b412_JaffaCakes118.exe	cmd.exe
PID 1876 wrote to memory of 2960	1876	fe7a83b2a9459c727de31bf862e8b412_JaffaCakes118.exe	cmd.exe
PID 1876 wrote to memory of 2628	1876	fe7a83b2a9459c727de31bf862e8b412_JaffaCakes118.exe	cmd.exe
PID 1876 wrote to memory of 2628	1876	fe7a83b2a9459c727de31bf862e8b412_JaffaCakes118.exe	cmd.exe
PID 1876 wrote to memory of 2628	1876	fe7a83b2a9459c727de31bf862e8b412_JaffaCakes118.exe	cmd.exe
PID 1876 wrote to memory of 2628	1876	fe7a83b2a9459c727de31bf862e8b412_JaffaCakes118.exe	cmd.exe
PID 1876 wrote to memory of 2564	1876	fe7a83b2a9459c727de31bf862e8b412_JaffaCakes118.exe	sc.exe
PID 1876 wrote to memory of 2564	1876	fe7a83b2a9459c727de31bf862e8b412_JaffaCakes118.exe	sc.exe
PID 1876 wrote to memory of 2564	1876	fe7a83b2a9459c727de31bf862e8b412_JaffaCakes118.exe	sc.exe
PID 1876 wrote to memory of 2564	1876	fe7a83b2a9459c727de31bf862e8b412_JaffaCakes118.exe	sc.exe
PID 1876 wrote to memory of 2756	1876	fe7a83b2a9459c727de31bf862e8b412_JaffaCakes118.exe	sc.exe
PID 1876 wrote to memory of 2756	1876	fe7a83b2a9459c727de31bf862e8b412_JaffaCakes118.exe	sc.exe
PID 1876 wrote to memory of 2756	1876	fe7a83b2a9459c727de31bf862e8b412_JaffaCakes118.exe	sc.exe
PID 1876 wrote to memory of 2756	1876	fe7a83b2a9459c727de31bf862e8b412_JaffaCakes118.exe	sc.exe
PID 1876 wrote to memory of 2704	1876	fe7a83b2a9459c727de31bf862e8b412_JaffaCakes118.exe	sc.exe
PID 1876 wrote to memory of 2704	1876	fe7a83b2a9459c727de31bf862e8b412_JaffaCakes118.exe	sc.exe
PID 1876 wrote to memory of 2704	1876	fe7a83b2a9459c727de31bf862e8b412_JaffaCakes118.exe	sc.exe
PID 1876 wrote to memory of 2704	1876	fe7a83b2a9459c727de31bf862e8b412_JaffaCakes118.exe	sc.exe
PID 1876 wrote to memory of 2548	1876	fe7a83b2a9459c727de31bf862e8b412_JaffaCakes118.exe	netsh.exe
PID 1876 wrote to memory of 2548	1876	fe7a83b2a9459c727de31bf862e8b412_JaffaCakes118.exe	netsh.exe
PID 1876 wrote to memory of 2548	1876	fe7a83b2a9459c727de31bf862e8b412_JaffaCakes118.exe	netsh.exe
PID 1876 wrote to memory of 2548	1876	fe7a83b2a9459c727de31bf862e8b412_JaffaCakes118.exe	netsh.exe
PID 2436 wrote to memory of 2580	2436	ntephwqc.exe	svchost.exe
PID 2436 wrote to memory of 2580	2436	ntephwqc.exe	svchost.exe
PID 2436 wrote to memory of 2580	2436	ntephwqc.exe	svchost.exe
PID 2436 wrote to memory of 2580	2436	ntephwqc.exe	svchost.exe
PID 2436 wrote to memory of 2580	2436	ntephwqc.exe	svchost.exe
PID 2436 wrote to memory of 2580	2436	ntephwqc.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\fe7a83b2a9459c727de31bf862e8b412_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fe7a83b2a9459c727de31bf862e8b412_JaffaCakes118.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1876

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wkrmfvus\
2⤵
PID:2960

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ntephwqc.exe" C:\Windows\SysWOW64\wkrmfvus\
2⤵
PID:2628

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create wkrmfvus binPath= "C:\Windows\SysWOW64\wkrmfvus\ntephwqc.exe /d\"C:\Users\Admin\AppData\Local\Temp\fe7a83b2a9459c727de31bf862e8b412_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:2564

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description wkrmfvus "wifi internet conection"
2⤵
- Launches sc.exe
PID:2756

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start wkrmfvus
2⤵
- Launches sc.exe
PID:2704

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:2548

C:\Windows\SysWOW64\wkrmfvus\ntephwqc.exe
C:\Windows\SysWOW64\wkrmfvus\ntephwqc.exe /d"C:\Users\Admin\AppData\Local\Temp\fe7a83b2a9459c727de31bf862e8b412_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2436

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:2580

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

2

T1562

Disable or Modify Tools

1

T1562.001

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\ntephwqc.exe
Filesize
13.8MB

MD5
386830e4cba46992843febce6f486f96

SHA1
23ab1e4d8654446b1a6c558d4e7c8f50d16efba4

SHA256
6923b1c91f57cd7b03b0aa72a36508c3a68242169a69e34ce5597a431d29af0e

SHA512
76507297f80980eec805a13f05dacf0d0cbe74b4efc4aafac8951187dfe2f218d99db15542c5027b634bd0f723d784f365225966d9e921110a245eb0b35911a8

Download Submit
memory/1876-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/1876-4-0x0000000000400000-0x0000000000C14000-memory.dmp

Filesize
8.1MB

Download
memory/1876-7-0x0000000000400000-0x0000000000C14000-memory.dmp

Filesize
8.1MB

Download
memory/1876-8-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/1876-1-0x0000000000DF0000-0x0000000000EF0000-memory.dmp

Filesize
1024KB

Download
memory/2436-14-0x0000000000D90000-0x0000000000E90000-memory.dmp

Filesize
1024KB

Download
memory/2436-17-0x0000000000400000-0x0000000000C14000-memory.dmp

Filesize
8.1MB

Download
memory/2580-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2580-13-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2580-10-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2580-19-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2580-20-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2580-21-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2580-22-0x00000000000C0000-0x00000000000D5000-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