tofsee | ad7b781f8819aa7dfcb0e9a36f308f28c2db7527513e6ece4349403bcc19c14b

General

Target

f53606c76e4e29c00b8c7ccedb02e2a0_JaffaCakes118.exe
Size

10.9MB
MD5

f53606c76e4e29c00b8c7ccedb02e2a0
SHA1

e26a2701d9cc62efbeae4d5a21ada244f295a4a7
SHA256

ad7b781f8819aa7dfcb0e9a36f308f28c2db7527513e6ece4349403bcc19c14b
SHA512

2f682a92d7971231b08485102e9c3d6e63f5910ce093fdddb90728fc931b7413b21899dfeb35db19f9f48a20b76da5031e8f1cbb28537641ab26c1a823e20cc3
SSDEEP

24576:4htJbmFQuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuO:BF

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\yobrytcm = "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

3016 netsh.exe

pid	process
3016	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\yobrytcm\ImagePath = "C:\\Windows\\SysWOW64\\yobrytcm\\pccazann.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2428 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

pccazann.exe

pid process

2452 pccazann.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

pccazann.exe

description pid process target process

PID 2452 set thread context of 2428 2452 pccazann.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

2588 sc.exe
2532 sc.exe
2652 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2428	svchost.exe

pid	process
2452	pccazann.exe

description	pid	process	target process
PID 2452 set thread context of 2428	2452	pccazann.exe	svchost.exe

pid	process
2588	sc.exe
2532	sc.exe
2652	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

f53606c76e4e29c00b8c7ccedb02e2a0_JaffaCakes118.exepccazann.exe

description	pid	process	target process
PID 2236 wrote to memory of 2200	2236	f53606c76e4e29c00b8c7ccedb02e2a0_JaffaCakes118.exe	cmd.exe
PID 2236 wrote to memory of 2200	2236	f53606c76e4e29c00b8c7ccedb02e2a0_JaffaCakes118.exe	cmd.exe
PID 2236 wrote to memory of 2200	2236	f53606c76e4e29c00b8c7ccedb02e2a0_JaffaCakes118.exe	cmd.exe
PID 2236 wrote to memory of 2200	2236	f53606c76e4e29c00b8c7ccedb02e2a0_JaffaCakes118.exe	cmd.exe
PID 2236 wrote to memory of 2112	2236	f53606c76e4e29c00b8c7ccedb02e2a0_JaffaCakes118.exe	cmd.exe
PID 2236 wrote to memory of 2112	2236	f53606c76e4e29c00b8c7ccedb02e2a0_JaffaCakes118.exe	cmd.exe
PID 2236 wrote to memory of 2112	2236	f53606c76e4e29c00b8c7ccedb02e2a0_JaffaCakes118.exe	cmd.exe
PID 2236 wrote to memory of 2112	2236	f53606c76e4e29c00b8c7ccedb02e2a0_JaffaCakes118.exe	cmd.exe
PID 2236 wrote to memory of 2532	2236	f53606c76e4e29c00b8c7ccedb02e2a0_JaffaCakes118.exe	sc.exe
PID 2236 wrote to memory of 2532	2236	f53606c76e4e29c00b8c7ccedb02e2a0_JaffaCakes118.exe	sc.exe
PID 2236 wrote to memory of 2532	2236	f53606c76e4e29c00b8c7ccedb02e2a0_JaffaCakes118.exe	sc.exe
PID 2236 wrote to memory of 2532	2236	f53606c76e4e29c00b8c7ccedb02e2a0_JaffaCakes118.exe	sc.exe
PID 2236 wrote to memory of 2652	2236	f53606c76e4e29c00b8c7ccedb02e2a0_JaffaCakes118.exe	sc.exe
PID 2236 wrote to memory of 2652	2236	f53606c76e4e29c00b8c7ccedb02e2a0_JaffaCakes118.exe	sc.exe
PID 2236 wrote to memory of 2652	2236	f53606c76e4e29c00b8c7ccedb02e2a0_JaffaCakes118.exe	sc.exe
PID 2236 wrote to memory of 2652	2236	f53606c76e4e29c00b8c7ccedb02e2a0_JaffaCakes118.exe	sc.exe
PID 2236 wrote to memory of 2588	2236	f53606c76e4e29c00b8c7ccedb02e2a0_JaffaCakes118.exe	sc.exe
PID 2236 wrote to memory of 2588	2236	f53606c76e4e29c00b8c7ccedb02e2a0_JaffaCakes118.exe	sc.exe
PID 2236 wrote to memory of 2588	2236	f53606c76e4e29c00b8c7ccedb02e2a0_JaffaCakes118.exe	sc.exe
PID 2236 wrote to memory of 2588	2236	f53606c76e4e29c00b8c7ccedb02e2a0_JaffaCakes118.exe	sc.exe
PID 2236 wrote to memory of 3016	2236	f53606c76e4e29c00b8c7ccedb02e2a0_JaffaCakes118.exe	netsh.exe
PID 2236 wrote to memory of 3016	2236	f53606c76e4e29c00b8c7ccedb02e2a0_JaffaCakes118.exe	netsh.exe
PID 2236 wrote to memory of 3016	2236	f53606c76e4e29c00b8c7ccedb02e2a0_JaffaCakes118.exe	netsh.exe
PID 2236 wrote to memory of 3016	2236	f53606c76e4e29c00b8c7ccedb02e2a0_JaffaCakes118.exe	netsh.exe
PID 2452 wrote to memory of 2428	2452	pccazann.exe	svchost.exe
PID 2452 wrote to memory of 2428	2452	pccazann.exe	svchost.exe
PID 2452 wrote to memory of 2428	2452	pccazann.exe	svchost.exe
PID 2452 wrote to memory of 2428	2452	pccazann.exe	svchost.exe
PID 2452 wrote to memory of 2428	2452	pccazann.exe	svchost.exe
PID 2452 wrote to memory of 2428	2452	pccazann.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f53606c76e4e29c00b8c7ccedb02e2a0_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f53606c76e4e29c00b8c7ccedb02e2a0_JaffaCakes118.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2236

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yobrytcm\
2⤵
PID:2200

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pccazann.exe" C:\Windows\SysWOW64\yobrytcm\
2⤵
PID:2112

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create yobrytcm binPath= "C:\Windows\SysWOW64\yobrytcm\pccazann.exe /d\"C:\Users\Admin\AppData\Local\Temp\f53606c76e4e29c00b8c7ccedb02e2a0_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:2532

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description yobrytcm "wifi internet conection"
2⤵
- Launches sc.exe
PID:2652

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start yobrytcm
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:3016

C:\Windows\SysWOW64\yobrytcm\pccazann.exe
C:\Windows\SysWOW64\yobrytcm\pccazann.exe /d"C:\Users\Admin\AppData\Local\Temp\f53606c76e4e29c00b8c7ccedb02e2a0_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2452

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:2428

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\pccazann.exe
Filesize
13.0MB

MD5
68f2ef03097d98f255ce292e6df7b18f

SHA1
2f9491bba61f7565f0b674951fae02c2dbd61a96

SHA256
ec86189e5c87c7420097305b5be53bb69a3b667788840dc5dedaf0bd312ff014

SHA512
cf4347f95faa59c449098a2644573d4a64ee8acc23842b13b1c031e80d86f790d84219b795e5e623c8b518c0eb73d777375368ba1ca86446f17ce232739f1ea5

Download Submit
memory/2236-9-0x00000000002A0000-0x00000000002B3000-memory.dmp

Filesize
76KB

Download
memory/2236-2-0x00000000002A0000-0x00000000002B3000-memory.dmp

Filesize
76KB

Download
memory/2236-3-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/2236-8-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/2236-1-0x00000000004D0000-0x00000000005D0000-memory.dmp

Filesize
1024KB

Download
memory/2428-12-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2428-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2428-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2428-19-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2428-20-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2428-21-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2428-22-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2452-10-0x0000000000620000-0x0000000000720000-memory.dmp

Filesize
1024KB

Download
memory/2452-11-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/2452-18-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads