tofsee | 19ebf45aa894088f39bf724dd04bf7873f10ef7150335d1e7178f9773b71dddd

General

Target

19ebf45aa894088f39bf724dd04bf7873f10ef7150335d1e7178f9773b71dddd.exe
Size

288KB
MD5

ffaa945215f29ebe8b8f0c1028e5c01e
SHA1

b6f02fa269199d9fff4dbfc8f1e0914047de38f5
SHA256

19ebf45aa894088f39bf724dd04bf7873f10ef7150335d1e7178f9773b71dddd
SHA512

1758960ab2c5265440e4b1b02b8cdabe9de43dedd5dc16e4050be5a6b340764a83f0abc967c358f6dfc4714c8b6782592bf2ba91a0070888d62e67bca3310976

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\jbelgsbx = "0"	svchost.exe

Creates new service(s) 1 TTPs
persistence

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

zbwneyfy.exe

pid process

1796 zbwneyfy.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

1784 netsh.exe

pid	process
1796	zbwneyfy.exe

pid	process
1784	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\jbelgsbx\ImagePath = "C:\\Windows\\SysWOW64\\jbelgsbx\\zbwneyfy.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

968 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

zbwneyfy.exe

description pid process target process

PID 1796 set thread context of 968 1796 zbwneyfy.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

1612 sc.exe
1976 sc.exe
916 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
968	svchost.exe

description	pid	process	target process
PID 1796 set thread context of 968	1796	zbwneyfy.exe	svchost.exe

pid	process
1612	sc.exe
1976	sc.exe
916	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

19ebf45aa894088f39bf724dd04bf7873f10ef7150335d1e7178f9773b71dddd.exezbwneyfy.exe

description	pid	process	target process
PID 1704 wrote to memory of 960	1704	19ebf45aa894088f39bf724dd04bf7873f10ef7150335d1e7178f9773b71dddd.exe	cmd.exe
PID 1704 wrote to memory of 960	1704	19ebf45aa894088f39bf724dd04bf7873f10ef7150335d1e7178f9773b71dddd.exe	cmd.exe
PID 1704 wrote to memory of 960	1704	19ebf45aa894088f39bf724dd04bf7873f10ef7150335d1e7178f9773b71dddd.exe	cmd.exe
PID 1704 wrote to memory of 960	1704	19ebf45aa894088f39bf724dd04bf7873f10ef7150335d1e7178f9773b71dddd.exe	cmd.exe
PID 1704 wrote to memory of 952	1704	19ebf45aa894088f39bf724dd04bf7873f10ef7150335d1e7178f9773b71dddd.exe	cmd.exe
PID 1704 wrote to memory of 952	1704	19ebf45aa894088f39bf724dd04bf7873f10ef7150335d1e7178f9773b71dddd.exe	cmd.exe
PID 1704 wrote to memory of 952	1704	19ebf45aa894088f39bf724dd04bf7873f10ef7150335d1e7178f9773b71dddd.exe	cmd.exe
PID 1704 wrote to memory of 952	1704	19ebf45aa894088f39bf724dd04bf7873f10ef7150335d1e7178f9773b71dddd.exe	cmd.exe
PID 1704 wrote to memory of 1612	1704	19ebf45aa894088f39bf724dd04bf7873f10ef7150335d1e7178f9773b71dddd.exe	sc.exe
PID 1704 wrote to memory of 1612	1704	19ebf45aa894088f39bf724dd04bf7873f10ef7150335d1e7178f9773b71dddd.exe	sc.exe
PID 1704 wrote to memory of 1612	1704	19ebf45aa894088f39bf724dd04bf7873f10ef7150335d1e7178f9773b71dddd.exe	sc.exe
PID 1704 wrote to memory of 1612	1704	19ebf45aa894088f39bf724dd04bf7873f10ef7150335d1e7178f9773b71dddd.exe	sc.exe
PID 1704 wrote to memory of 1976	1704	19ebf45aa894088f39bf724dd04bf7873f10ef7150335d1e7178f9773b71dddd.exe	sc.exe
PID 1704 wrote to memory of 1976	1704	19ebf45aa894088f39bf724dd04bf7873f10ef7150335d1e7178f9773b71dddd.exe	sc.exe
PID 1704 wrote to memory of 1976	1704	19ebf45aa894088f39bf724dd04bf7873f10ef7150335d1e7178f9773b71dddd.exe	sc.exe
PID 1704 wrote to memory of 1976	1704	19ebf45aa894088f39bf724dd04bf7873f10ef7150335d1e7178f9773b71dddd.exe	sc.exe
PID 1704 wrote to memory of 916	1704	19ebf45aa894088f39bf724dd04bf7873f10ef7150335d1e7178f9773b71dddd.exe	sc.exe
PID 1704 wrote to memory of 916	1704	19ebf45aa894088f39bf724dd04bf7873f10ef7150335d1e7178f9773b71dddd.exe	sc.exe
PID 1704 wrote to memory of 916	1704	19ebf45aa894088f39bf724dd04bf7873f10ef7150335d1e7178f9773b71dddd.exe	sc.exe
PID 1704 wrote to memory of 916	1704	19ebf45aa894088f39bf724dd04bf7873f10ef7150335d1e7178f9773b71dddd.exe	sc.exe
PID 1704 wrote to memory of 1784	1704	19ebf45aa894088f39bf724dd04bf7873f10ef7150335d1e7178f9773b71dddd.exe	netsh.exe
PID 1704 wrote to memory of 1784	1704	19ebf45aa894088f39bf724dd04bf7873f10ef7150335d1e7178f9773b71dddd.exe	netsh.exe
PID 1704 wrote to memory of 1784	1704	19ebf45aa894088f39bf724dd04bf7873f10ef7150335d1e7178f9773b71dddd.exe	netsh.exe
PID 1704 wrote to memory of 1784	1704	19ebf45aa894088f39bf724dd04bf7873f10ef7150335d1e7178f9773b71dddd.exe	netsh.exe
PID 1796 wrote to memory of 968	1796	zbwneyfy.exe	svchost.exe
PID 1796 wrote to memory of 968	1796	zbwneyfy.exe	svchost.exe
PID 1796 wrote to memory of 968	1796	zbwneyfy.exe	svchost.exe
PID 1796 wrote to memory of 968	1796	zbwneyfy.exe	svchost.exe
PID 1796 wrote to memory of 968	1796	zbwneyfy.exe	svchost.exe
PID 1796 wrote to memory of 968	1796	zbwneyfy.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\19ebf45aa894088f39bf724dd04bf7873f10ef7150335d1e7178f9773b71dddd.exe
"C:\Users\Admin\AppData\Local\Temp\19ebf45aa894088f39bf724dd04bf7873f10ef7150335d1e7178f9773b71dddd.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1704

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jbelgsbx\
2⤵
PID:960

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zbwneyfy.exe" C:\Windows\SysWOW64\jbelgsbx\
2⤵
PID:952

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create jbelgsbx binPath= "C:\Windows\SysWOW64\jbelgsbx\zbwneyfy.exe /d\"C:\Users\Admin\AppData\Local\Temp\19ebf45aa894088f39bf724dd04bf7873f10ef7150335d1e7178f9773b71dddd.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:1612

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description jbelgsbx "wifi internet conection"
2⤵
- Launches sc.exe
PID:1976

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start jbelgsbx
2⤵
- Launches sc.exe
PID:916

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:1784

C:\Windows\SysWOW64\jbelgsbx\zbwneyfy.exe
C:\Windows\SysWOW64\jbelgsbx\zbwneyfy.exe /d"C:\Users\Admin\AppData\Local\Temp\19ebf45aa894088f39bf724dd04bf7873f10ef7150335d1e7178f9773b71dddd.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1796

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:968

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\zbwneyfy.exe
Filesize
14.9MB

MD5
215bcc18f34c3387e4eebeb27948294d

SHA1
1a399249945a46f350867f24de0f03b194bd5dea

SHA256
fc70ee8fe5ae5f101b35b7d87d6c656e08879b989bf21043a45d2bbd79b31d52

SHA512
b04f2e9db6e37633af23c17bf29cbc3702ac800493f0d1c7c7238aa22a373adac8776a18f100d62fe4cba28b4d94aa3aec5542dd875354e4b4b95c68b038a284

Download Submit
C:\Windows\SysWOW64\jbelgsbx\zbwneyfy.exe
Filesize
14.9MB

MD5
215bcc18f34c3387e4eebeb27948294d

SHA1
1a399249945a46f350867f24de0f03b194bd5dea

SHA256
fc70ee8fe5ae5f101b35b7d87d6c656e08879b989bf21043a45d2bbd79b31d52

SHA512
b04f2e9db6e37633af23c17bf29cbc3702ac800493f0d1c7c7238aa22a373adac8776a18f100d62fe4cba28b4d94aa3aec5542dd875354e4b4b95c68b038a284

Download Submit
memory/916-63-0x0000000000000000-mapping.dmp

Download
memory/952-59-0x0000000000000000-mapping.dmp

Download
memory/960-58-0x0000000000000000-mapping.dmp

Download
memory/968-80-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/968-72-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/968-82-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/968-75-0x0000000000089A6B-mapping.dmp

Download
memory/968-74-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1612-61-0x0000000000000000-mapping.dmp

Download
memory/1704-55-0x0000000000E30000-0x0000000000E40000-memory.dmp

Filesize
64KB

Download
memory/1704-66-0x0000000000E30000-0x0000000000E40000-memory.dmp

Filesize
64KB

Download
memory/1704-67-0x0000000000400000-0x0000000000C4E000-memory.dmp

Filesize
8.3MB

Download
memory/1704-56-0x0000000076241000-0x0000000076243000-memory.dmp

Filesize
8KB

Download
memory/1704-57-0x0000000000400000-0x0000000000C4E000-memory.dmp

Filesize
8.3MB

Download
memory/1704-54-0x0000000000E30000-0x0000000000E40000-memory.dmp

Filesize
64KB

Download
memory/1784-65-0x0000000000000000-mapping.dmp

Download
memory/1796-71-0x0000000000400000-0x0000000000C4E000-memory.dmp

Filesize
8.3MB

Download
memory/1796-70-0x0000000000D50000-0x0000000000D60000-memory.dmp

Filesize
64KB

Download
memory/1796-78-0x0000000000400000-0x0000000000C4E000-memory.dmp

Filesize
8.3MB

Download
memory/1796-68-0x0000000000D50000-0x0000000000D60000-memory.dmp

Filesize
64KB

Download
memory/1976-62-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads