tofsee | 387ca39819c3cbacbd451cf8dd67a51be3d494417e07121bee55e894f24a40e3

General

Target

f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe
Size

11.6MB
MD5

f95be8bb765824a57b98f01e4101e6e5
SHA1

cf9efeb3adcf6d529494a5064c2eb6278b3346c2
SHA256

387ca39819c3cbacbd451cf8dd67a51be3d494417e07121bee55e894f24a40e3
SHA512

5db9fd1e71f1dc1aeac8166b359ff31c7a04080831c06837ddccf7fd9a3b29e884d8880af5f20f27c1d1774b106d14213a3bf9dae162e1ada5578fdcf33aaf52
SSDEEP

24576:GjDuKnh7YzbKBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBn:Gnh

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\zaewlkuq = "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

2352 netsh.exe

pid	process
2352	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\zaewlkuq\ImagePath = "C:\\Windows\\SysWOW64\\zaewlkuq\\pykqavrh.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

800 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

pykqavrh.exe

pid process

2312 pykqavrh.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

pykqavrh.exe

description pid process target process

PID 2312 set thread context of 800 2312 pykqavrh.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

2328 sc.exe
2356 sc.exe
2276 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
800	svchost.exe

pid	process
2312	pykqavrh.exe

description	pid	process	target process
PID 2312 set thread context of 800	2312	pykqavrh.exe	svchost.exe

pid	process
2328	sc.exe
2356	sc.exe
2276	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exepykqavrh.exe

description	pid	process	target process
PID 2620 wrote to memory of 2368	2620	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	cmd.exe
PID 2620 wrote to memory of 2368	2620	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	cmd.exe
PID 2620 wrote to memory of 2368	2620	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	cmd.exe
PID 2620 wrote to memory of 2368	2620	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	cmd.exe
PID 2620 wrote to memory of 2508	2620	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	cmd.exe
PID 2620 wrote to memory of 2508	2620	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	cmd.exe
PID 2620 wrote to memory of 2508	2620	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	cmd.exe
PID 2620 wrote to memory of 2508	2620	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	cmd.exe
PID 2620 wrote to memory of 2356	2620	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	sc.exe
PID 2620 wrote to memory of 2356	2620	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	sc.exe
PID 2620 wrote to memory of 2356	2620	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	sc.exe
PID 2620 wrote to memory of 2356	2620	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	sc.exe
PID 2620 wrote to memory of 2276	2620	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	sc.exe
PID 2620 wrote to memory of 2276	2620	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	sc.exe
PID 2620 wrote to memory of 2276	2620	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	sc.exe
PID 2620 wrote to memory of 2276	2620	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	sc.exe
PID 2620 wrote to memory of 2328	2620	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	sc.exe
PID 2620 wrote to memory of 2328	2620	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	sc.exe
PID 2620 wrote to memory of 2328	2620	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	sc.exe
PID 2620 wrote to memory of 2328	2620	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	sc.exe
PID 2620 wrote to memory of 2352	2620	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	netsh.exe
PID 2620 wrote to memory of 2352	2620	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	netsh.exe
PID 2620 wrote to memory of 2352	2620	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	netsh.exe
PID 2620 wrote to memory of 2352	2620	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	netsh.exe
PID 2312 wrote to memory of 800	2312	pykqavrh.exe	svchost.exe
PID 2312 wrote to memory of 800	2312	pykqavrh.exe	svchost.exe
PID 2312 wrote to memory of 800	2312	pykqavrh.exe	svchost.exe
PID 2312 wrote to memory of 800	2312	pykqavrh.exe	svchost.exe
PID 2312 wrote to memory of 800	2312	pykqavrh.exe	svchost.exe
PID 2312 wrote to memory of 800	2312	pykqavrh.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2620

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zaewlkuq\
2⤵
PID:2368

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pykqavrh.exe" C:\Windows\SysWOW64\zaewlkuq\
2⤵
PID:2508

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create zaewlkuq binPath= "C:\Windows\SysWOW64\zaewlkuq\pykqavrh.exe /d\"C:\Users\Admin\AppData\Local\Temp\f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:2356

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description zaewlkuq "wifi internet conection"
2⤵
- Launches sc.exe
PID:2276

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start zaewlkuq
2⤵
- Launches sc.exe
PID:2328

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:2352

C:\Windows\SysWOW64\zaewlkuq\pykqavrh.exe
C:\Windows\SysWOW64\zaewlkuq\pykqavrh.exe /d"C:\Users\Admin\AppData\Local\Temp\f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2312

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:800

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\pykqavrh.exe

Filesize
10.2MB

MD5
fd757a6aba7dcecaa8f0345383df2b07

SHA1
004460dddd314ad21028a773e46422f7ce58750b

SHA256
396afe0be824a64cd35eee60726536bbe25908e6187d4a842c74a808fb720fa7

SHA512
607a39944134e3e3afcff9efc2b37d592becee887ce6c0bbf60fdbbe2de33142f7804596cf79bad868b6f667d758289a3dd3f763932405a34311063bb2e532cc

Download Submit
memory/800-10-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/800-22-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/800-21-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/800-20-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/800-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/800-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2312-11-0x0000000000640000-0x0000000000740000-memory.dmp

Filesize
1024KB

Download
memory/2312-13-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2312-16-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2620-1-0x0000000000290000-0x0000000000390000-memory.dmp

Filesize
1024KB

Download
memory/2620-7-0x00000000001B0000-0x00000000001C3000-memory.dmp

Filesize
76KB

Download
memory/2620-6-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2620-3-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2620-2-0x00000000001B0000-0x00000000001C3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads