tofsee | 3bf66140ed49d2b71c6674e064b26d605f196ec45b99cc2392802313918cd4ed

General

Target

3bf66140ed49d2b71c6674e064b26d605f196ec45b99cc2392802313918cd4ed.exe
Size

104KB
MD5

cfce7e045cb6ed8bdcab5460ea2ff37a
SHA1

6bdc0c47643df5da4a583b0e23a8572a90d27ecd
SHA256

3bf66140ed49d2b71c6674e064b26d605f196ec45b99cc2392802313918cd4ed
SHA512

41d25210921915a7163daa4433a61f8c865a64829fa1d1ffd50a2dea7aa8aef66d3e7ed52229bac9e181c20b21543a3cb92251edcdce738e1735010bdba01279

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\txwqypzj = "0"	svchost.exe

Creates new service(s) 1 TTPs
persistence

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

poawblvi.exe

pid process

268 poawblvi.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

664 netsh.exe

pid	process
268	poawblvi.exe

pid	process
664	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\txwqypzj\ImagePath = "C:\\Windows\\SysWOW64\\txwqypzj\\poawblvi.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1468 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

poawblvi.exe

description pid process target process

PID 268 set thread context of 1468 268 poawblvi.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

1048 sc.exe
1732 sc.exe
612 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
1468	svchost.exe

description	pid	process	target process
PID 268 set thread context of 1468	268	poawblvi.exe	svchost.exe

pid	process
1048	sc.exe
1732	sc.exe
612	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

3bf66140ed49d2b71c6674e064b26d605f196ec45b99cc2392802313918cd4ed.exepoawblvi.exe

description	pid	process	target process
PID 1672 wrote to memory of 896	1672	3bf66140ed49d2b71c6674e064b26d605f196ec45b99cc2392802313918cd4ed.exe	cmd.exe
PID 1672 wrote to memory of 896	1672	3bf66140ed49d2b71c6674e064b26d605f196ec45b99cc2392802313918cd4ed.exe	cmd.exe
PID 1672 wrote to memory of 896	1672	3bf66140ed49d2b71c6674e064b26d605f196ec45b99cc2392802313918cd4ed.exe	cmd.exe
PID 1672 wrote to memory of 896	1672	3bf66140ed49d2b71c6674e064b26d605f196ec45b99cc2392802313918cd4ed.exe	cmd.exe
PID 1672 wrote to memory of 940	1672	3bf66140ed49d2b71c6674e064b26d605f196ec45b99cc2392802313918cd4ed.exe	cmd.exe
PID 1672 wrote to memory of 940	1672	3bf66140ed49d2b71c6674e064b26d605f196ec45b99cc2392802313918cd4ed.exe	cmd.exe
PID 1672 wrote to memory of 940	1672	3bf66140ed49d2b71c6674e064b26d605f196ec45b99cc2392802313918cd4ed.exe	cmd.exe
PID 1672 wrote to memory of 940	1672	3bf66140ed49d2b71c6674e064b26d605f196ec45b99cc2392802313918cd4ed.exe	cmd.exe
PID 1672 wrote to memory of 1048	1672	3bf66140ed49d2b71c6674e064b26d605f196ec45b99cc2392802313918cd4ed.exe	sc.exe
PID 1672 wrote to memory of 1048	1672	3bf66140ed49d2b71c6674e064b26d605f196ec45b99cc2392802313918cd4ed.exe	sc.exe
PID 1672 wrote to memory of 1048	1672	3bf66140ed49d2b71c6674e064b26d605f196ec45b99cc2392802313918cd4ed.exe	sc.exe
PID 1672 wrote to memory of 1048	1672	3bf66140ed49d2b71c6674e064b26d605f196ec45b99cc2392802313918cd4ed.exe	sc.exe
PID 1672 wrote to memory of 1732	1672	3bf66140ed49d2b71c6674e064b26d605f196ec45b99cc2392802313918cd4ed.exe	sc.exe
PID 1672 wrote to memory of 1732	1672	3bf66140ed49d2b71c6674e064b26d605f196ec45b99cc2392802313918cd4ed.exe	sc.exe
PID 1672 wrote to memory of 1732	1672	3bf66140ed49d2b71c6674e064b26d605f196ec45b99cc2392802313918cd4ed.exe	sc.exe
PID 1672 wrote to memory of 1732	1672	3bf66140ed49d2b71c6674e064b26d605f196ec45b99cc2392802313918cd4ed.exe	sc.exe
PID 1672 wrote to memory of 612	1672	3bf66140ed49d2b71c6674e064b26d605f196ec45b99cc2392802313918cd4ed.exe	sc.exe
PID 1672 wrote to memory of 612	1672	3bf66140ed49d2b71c6674e064b26d605f196ec45b99cc2392802313918cd4ed.exe	sc.exe
PID 1672 wrote to memory of 612	1672	3bf66140ed49d2b71c6674e064b26d605f196ec45b99cc2392802313918cd4ed.exe	sc.exe
PID 1672 wrote to memory of 612	1672	3bf66140ed49d2b71c6674e064b26d605f196ec45b99cc2392802313918cd4ed.exe	sc.exe
PID 1672 wrote to memory of 664	1672	3bf66140ed49d2b71c6674e064b26d605f196ec45b99cc2392802313918cd4ed.exe	netsh.exe
PID 1672 wrote to memory of 664	1672	3bf66140ed49d2b71c6674e064b26d605f196ec45b99cc2392802313918cd4ed.exe	netsh.exe
PID 1672 wrote to memory of 664	1672	3bf66140ed49d2b71c6674e064b26d605f196ec45b99cc2392802313918cd4ed.exe	netsh.exe
PID 1672 wrote to memory of 664	1672	3bf66140ed49d2b71c6674e064b26d605f196ec45b99cc2392802313918cd4ed.exe	netsh.exe
PID 268 wrote to memory of 1468	268	poawblvi.exe	svchost.exe
PID 268 wrote to memory of 1468	268	poawblvi.exe	svchost.exe
PID 268 wrote to memory of 1468	268	poawblvi.exe	svchost.exe
PID 268 wrote to memory of 1468	268	poawblvi.exe	svchost.exe
PID 268 wrote to memory of 1468	268	poawblvi.exe	svchost.exe
PID 268 wrote to memory of 1468	268	poawblvi.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\3bf66140ed49d2b71c6674e064b26d605f196ec45b99cc2392802313918cd4ed.exe
"C:\Users\Admin\AppData\Local\Temp\3bf66140ed49d2b71c6674e064b26d605f196ec45b99cc2392802313918cd4ed.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1672

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\txwqypzj\
2⤵
PID:896

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\poawblvi.exe" C:\Windows\SysWOW64\txwqypzj\
2⤵
PID:940

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create txwqypzj binPath= "C:\Windows\SysWOW64\txwqypzj\poawblvi.exe /d\"C:\Users\Admin\AppData\Local\Temp\3bf66140ed49d2b71c6674e064b26d605f196ec45b99cc2392802313918cd4ed.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:1048

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description txwqypzj "wifi internet conection"
2⤵
- Launches sc.exe
PID:1732

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start txwqypzj
2⤵
- Launches sc.exe
PID:612

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:664

C:\Windows\SysWOW64\txwqypzj\poawblvi.exe
C:\Windows\SysWOW64\txwqypzj\poawblvi.exe /d"C:\Users\Admin\AppData\Local\Temp\3bf66140ed49d2b71c6674e064b26d605f196ec45b99cc2392802313918cd4ed.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:268

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:1468

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\poawblvi.exe
Filesize
10.1MB

MD5
712afd502817dec16fb46ead0097406f

SHA1
178aa7a83e64d4944277081944df0a67758dbaa0

SHA256
3ddb26436b0a480066d96180264867eb436ba6c0cababbc706613d64658632cb

SHA512
7324cac97e916ef07441d5434f487080d110fd04387eab63ab72c15de6b5b40d83f753244ef8a1c450b7abb89ffb5e57d460439ac3b78c008b998c47c564a910

Download Submit
C:\Windows\SysWOW64\txwqypzj\poawblvi.exe
Filesize
10.1MB

MD5
712afd502817dec16fb46ead0097406f

SHA1
178aa7a83e64d4944277081944df0a67758dbaa0

SHA256
3ddb26436b0a480066d96180264867eb436ba6c0cababbc706613d64658632cb

SHA512
7324cac97e916ef07441d5434f487080d110fd04387eab63ab72c15de6b5b40d83f753244ef8a1c450b7abb89ffb5e57d460439ac3b78c008b998c47c564a910

Download Submit
memory/268-63-0x0000000000400000-0x000000000041D000-memory.dmp

Filesize
116KB

Download
memory/612-61-0x0000000000000000-mapping.dmp

Download
memory/664-65-0x0000000000000000-mapping.dmp

Download
memory/896-56-0x0000000000000000-mapping.dmp

Download
memory/940-57-0x0000000000000000-mapping.dmp

Download
memory/1048-59-0x0000000000000000-mapping.dmp

Download
memory/1468-66-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1468-68-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1468-69-0x0000000000089A6B-mapping.dmp

Download
memory/1468-74-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1468-75-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1672-54-0x0000000000400000-0x000000000041D000-memory.dmp

Filesize
116KB

Download
memory/1672-55-0x0000000075B61000-0x0000000075B63000-memory.dmp

Filesize
8KB

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

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads