tofsee | 5bcc5563c17c7805651b50c509b6862ef554948336fbec1f99f9059a65d6b703

General

Target

5bcc5563c17c7805651b50c509b6862ef554948336fbec1f99f9059a65d6b703.exe
Size

98KB
MD5

20e50f7c063b80d6b94ec00c32b474d1
SHA1

ac92bbd2101938d52eb32b957269baa1679923ed
SHA256

5bcc5563c17c7805651b50c509b6862ef554948336fbec1f99f9059a65d6b703
SHA512

2d6aad089b0eed97a75a5134fde9ace1251da47f6796d92de1b58da6185ecd92b9043a730709e4f71ed7e6386b3b7d6a5dccfb2766996b74b4116dcf50e2b64a

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

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\znyuvolq = "0"	svchost.exe

Creates new service(s) 1 TTPs
persistence

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

inaadcsx.exe

pid process

920 inaadcsx.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

1496 netsh.exe

pid	process
920	inaadcsx.exe

pid	process
1496	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\znyuvolq\ImagePath = "C:\\Windows\\SysWOW64\\znyuvolq\\inaadcsx.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1328 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

inaadcsx.exe

description pid process target process

PID 920 set thread context of 1328 920 inaadcsx.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

1256 sc.exe
1732 sc.exe
1284 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

pid	process
1328	svchost.exe

description	pid	process	target process
PID 920 set thread context of 1328	920	inaadcsx.exe	svchost.exe

pid	process
1256	sc.exe
1732	sc.exe
1284	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

5bcc5563c17c7805651b50c509b6862ef554948336fbec1f99f9059a65d6b703.exeinaadcsx.exe

description	pid	process	target process
PID 1176 wrote to memory of 748	1176	5bcc5563c17c7805651b50c509b6862ef554948336fbec1f99f9059a65d6b703.exe	cmd.exe
PID 1176 wrote to memory of 748	1176	5bcc5563c17c7805651b50c509b6862ef554948336fbec1f99f9059a65d6b703.exe	cmd.exe
PID 1176 wrote to memory of 748	1176	5bcc5563c17c7805651b50c509b6862ef554948336fbec1f99f9059a65d6b703.exe	cmd.exe
PID 1176 wrote to memory of 748	1176	5bcc5563c17c7805651b50c509b6862ef554948336fbec1f99f9059a65d6b703.exe	cmd.exe
PID 1176 wrote to memory of 984	1176	5bcc5563c17c7805651b50c509b6862ef554948336fbec1f99f9059a65d6b703.exe	cmd.exe
PID 1176 wrote to memory of 984	1176	5bcc5563c17c7805651b50c509b6862ef554948336fbec1f99f9059a65d6b703.exe	cmd.exe
PID 1176 wrote to memory of 984	1176	5bcc5563c17c7805651b50c509b6862ef554948336fbec1f99f9059a65d6b703.exe	cmd.exe
PID 1176 wrote to memory of 984	1176	5bcc5563c17c7805651b50c509b6862ef554948336fbec1f99f9059a65d6b703.exe	cmd.exe
PID 1176 wrote to memory of 1732	1176	5bcc5563c17c7805651b50c509b6862ef554948336fbec1f99f9059a65d6b703.exe	sc.exe
PID 1176 wrote to memory of 1732	1176	5bcc5563c17c7805651b50c509b6862ef554948336fbec1f99f9059a65d6b703.exe	sc.exe
PID 1176 wrote to memory of 1732	1176	5bcc5563c17c7805651b50c509b6862ef554948336fbec1f99f9059a65d6b703.exe	sc.exe
PID 1176 wrote to memory of 1732	1176	5bcc5563c17c7805651b50c509b6862ef554948336fbec1f99f9059a65d6b703.exe	sc.exe
PID 1176 wrote to memory of 1284	1176	5bcc5563c17c7805651b50c509b6862ef554948336fbec1f99f9059a65d6b703.exe	sc.exe
PID 1176 wrote to memory of 1284	1176	5bcc5563c17c7805651b50c509b6862ef554948336fbec1f99f9059a65d6b703.exe	sc.exe
PID 1176 wrote to memory of 1284	1176	5bcc5563c17c7805651b50c509b6862ef554948336fbec1f99f9059a65d6b703.exe	sc.exe
PID 1176 wrote to memory of 1284	1176	5bcc5563c17c7805651b50c509b6862ef554948336fbec1f99f9059a65d6b703.exe	sc.exe
PID 1176 wrote to memory of 1256	1176	5bcc5563c17c7805651b50c509b6862ef554948336fbec1f99f9059a65d6b703.exe	sc.exe
PID 1176 wrote to memory of 1256	1176	5bcc5563c17c7805651b50c509b6862ef554948336fbec1f99f9059a65d6b703.exe	sc.exe
PID 1176 wrote to memory of 1256	1176	5bcc5563c17c7805651b50c509b6862ef554948336fbec1f99f9059a65d6b703.exe	sc.exe
PID 1176 wrote to memory of 1256	1176	5bcc5563c17c7805651b50c509b6862ef554948336fbec1f99f9059a65d6b703.exe	sc.exe
PID 1176 wrote to memory of 1496	1176	5bcc5563c17c7805651b50c509b6862ef554948336fbec1f99f9059a65d6b703.exe	netsh.exe
PID 1176 wrote to memory of 1496	1176	5bcc5563c17c7805651b50c509b6862ef554948336fbec1f99f9059a65d6b703.exe	netsh.exe
PID 1176 wrote to memory of 1496	1176	5bcc5563c17c7805651b50c509b6862ef554948336fbec1f99f9059a65d6b703.exe	netsh.exe
PID 1176 wrote to memory of 1496	1176	5bcc5563c17c7805651b50c509b6862ef554948336fbec1f99f9059a65d6b703.exe	netsh.exe
PID 920 wrote to memory of 1328	920	inaadcsx.exe	svchost.exe
PID 920 wrote to memory of 1328	920	inaadcsx.exe	svchost.exe
PID 920 wrote to memory of 1328	920	inaadcsx.exe	svchost.exe
PID 920 wrote to memory of 1328	920	inaadcsx.exe	svchost.exe
PID 920 wrote to memory of 1328	920	inaadcsx.exe	svchost.exe
PID 920 wrote to memory of 1328	920	inaadcsx.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\5bcc5563c17c7805651b50c509b6862ef554948336fbec1f99f9059a65d6b703.exe
"C:\Users\Admin\AppData\Local\Temp\5bcc5563c17c7805651b50c509b6862ef554948336fbec1f99f9059a65d6b703.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1176

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\znyuvolq\
2⤵
PID:748

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\inaadcsx.exe" C:\Windows\SysWOW64\znyuvolq\
2⤵
PID:984

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create znyuvolq binPath= "C:\Windows\SysWOW64\znyuvolq\inaadcsx.exe /d\"C:\Users\Admin\AppData\Local\Temp\5bcc5563c17c7805651b50c509b6862ef554948336fbec1f99f9059a65d6b703.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:1732

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description znyuvolq "wifi internet conection"
2⤵
- Launches sc.exe
PID:1284

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start znyuvolq
2⤵
- Launches sc.exe
PID:1256

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:1496

C:\Windows\SysWOW64\znyuvolq\inaadcsx.exe
C:\Windows\SysWOW64\znyuvolq\inaadcsx.exe /d"C:\Users\Admin\AppData\Local\Temp\5bcc5563c17c7805651b50c509b6862ef554948336fbec1f99f9059a65d6b703.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:920

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:1328

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

New Service

1

T1050

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

New Service

1

T1050

Defense Evasion

Disabling Security Tools

1

T1089

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\inaadcsx.exe
Filesize
12.3MB

MD5
d379b2a2a44e9b64dcc6edeb0b42eeee

SHA1
27f337348dd7ffeb71195c9183107f2fda628319

SHA256
c149f821cfd3edc81e8810e537d0bd76178c823d5bfb6eb2ba3c9521b2cadc19

SHA512
84f1861089644096dd6a122476332ba0ed2d9c0f5a48dcbe16f25af664f3997c68df5b400766a0924b2fd9c2319b02ca771d3fc2726958caf922a309f7b5cdfa

Download Submit
C:\Windows\SysWOW64\znyuvolq\inaadcsx.exe
Filesize
12.3MB

MD5
d379b2a2a44e9b64dcc6edeb0b42eeee

SHA1
27f337348dd7ffeb71195c9183107f2fda628319

SHA256
c149f821cfd3edc81e8810e537d0bd76178c823d5bfb6eb2ba3c9521b2cadc19

SHA512
84f1861089644096dd6a122476332ba0ed2d9c0f5a48dcbe16f25af664f3997c68df5b400766a0924b2fd9c2319b02ca771d3fc2726958caf922a309f7b5cdfa

Download Submit
memory/748-56-0x0000000000000000-mapping.dmp

Download
memory/920-73-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/920-67-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/984-58-0x0000000000000000-mapping.dmp

Download
memory/1176-57-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1176-55-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1176-64-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1176-54-0x0000000075211000-0x0000000075213000-memory.dmp

Filesize
8KB

Download
memory/1256-62-0x0000000000000000-mapping.dmp

Download
memory/1284-61-0x0000000000000000-mapping.dmp

Download
memory/1328-71-0x0000000000089A6B-mapping.dmp

Download
memory/1328-68-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1328-70-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1328-76-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1328-78-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1496-63-0x0000000000000000-mapping.dmp

Download
memory/1732-60-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads