tofsee | 25ed67b390cafbd1ebcebed4c9cad13c38e6998c45e501e23d6652ac04bb69ef

General

Target

097bc3c7d6f6f50a503fdb7a56e22a34.exe
Size

312KB
MD5

097bc3c7d6f6f50a503fdb7a56e22a34
SHA1

bc801204c76b73ee9e66a9a7bdffd856965604e0
SHA256

25ed67b390cafbd1ebcebed4c9cad13c38e6998c45e501e23d6652ac04bb69ef
SHA512

7dedbefbe0a0af1d1541374a1a8916eb45d6037c15b8ae36ed28c4dfc0a9d22f5062b584b856b8d32cf5d675f1a718b31b029dc5abcea4c40d8925ae42f05eea
SSDEEP

3072:6AX8ODio3+FCLQbFK+OCQ/KbqAjxBn7UJIdg6hO3Vd+eVRg/5wcw3P3XqT:vPDl5L0FKBDKbzBYd6upvG

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

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\laqxdlbj = "0"	svchost.exe

Creates new service(s) 1 TTPs
persistence

New Service
T1050
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

920 netsh.exe

pid	process
920	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\laqxdlbj\ImagePath = "C:\\Windows\\SysWOW64\\laqxdlbj\\csodyqow.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1060 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

csodyqow.exe

pid process

1828 csodyqow.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

csodyqow.exe

description pid process target process

PID 1828 set thread context of 1060 1828 csodyqow.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

1928 sc.exe
1280 sc.exe
1160 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1060	svchost.exe

pid	process
1828	csodyqow.exe

description	pid	process	target process
PID 1828 set thread context of 1060	1828	csodyqow.exe	svchost.exe

pid	process
1928	sc.exe
1280	sc.exe
1160	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

097bc3c7d6f6f50a503fdb7a56e22a34.execsodyqow.exe

description	pid	process	target process
PID 848 wrote to memory of 1764	848	097bc3c7d6f6f50a503fdb7a56e22a34.exe	cmd.exe
PID 848 wrote to memory of 1764	848	097bc3c7d6f6f50a503fdb7a56e22a34.exe	cmd.exe
PID 848 wrote to memory of 1764	848	097bc3c7d6f6f50a503fdb7a56e22a34.exe	cmd.exe
PID 848 wrote to memory of 1764	848	097bc3c7d6f6f50a503fdb7a56e22a34.exe	cmd.exe
PID 848 wrote to memory of 1488	848	097bc3c7d6f6f50a503fdb7a56e22a34.exe	cmd.exe
PID 848 wrote to memory of 1488	848	097bc3c7d6f6f50a503fdb7a56e22a34.exe	cmd.exe
PID 848 wrote to memory of 1488	848	097bc3c7d6f6f50a503fdb7a56e22a34.exe	cmd.exe
PID 848 wrote to memory of 1488	848	097bc3c7d6f6f50a503fdb7a56e22a34.exe	cmd.exe
PID 848 wrote to memory of 1928	848	097bc3c7d6f6f50a503fdb7a56e22a34.exe	sc.exe
PID 848 wrote to memory of 1928	848	097bc3c7d6f6f50a503fdb7a56e22a34.exe	sc.exe
PID 848 wrote to memory of 1928	848	097bc3c7d6f6f50a503fdb7a56e22a34.exe	sc.exe
PID 848 wrote to memory of 1928	848	097bc3c7d6f6f50a503fdb7a56e22a34.exe	sc.exe
PID 848 wrote to memory of 1280	848	097bc3c7d6f6f50a503fdb7a56e22a34.exe	sc.exe
PID 848 wrote to memory of 1280	848	097bc3c7d6f6f50a503fdb7a56e22a34.exe	sc.exe
PID 848 wrote to memory of 1280	848	097bc3c7d6f6f50a503fdb7a56e22a34.exe	sc.exe
PID 848 wrote to memory of 1280	848	097bc3c7d6f6f50a503fdb7a56e22a34.exe	sc.exe
PID 848 wrote to memory of 1160	848	097bc3c7d6f6f50a503fdb7a56e22a34.exe	sc.exe
PID 848 wrote to memory of 1160	848	097bc3c7d6f6f50a503fdb7a56e22a34.exe	sc.exe
PID 848 wrote to memory of 1160	848	097bc3c7d6f6f50a503fdb7a56e22a34.exe	sc.exe
PID 848 wrote to memory of 1160	848	097bc3c7d6f6f50a503fdb7a56e22a34.exe	sc.exe
PID 848 wrote to memory of 920	848	097bc3c7d6f6f50a503fdb7a56e22a34.exe	netsh.exe
PID 848 wrote to memory of 920	848	097bc3c7d6f6f50a503fdb7a56e22a34.exe	netsh.exe
PID 848 wrote to memory of 920	848	097bc3c7d6f6f50a503fdb7a56e22a34.exe	netsh.exe
PID 848 wrote to memory of 920	848	097bc3c7d6f6f50a503fdb7a56e22a34.exe	netsh.exe
PID 1828 wrote to memory of 1060	1828	csodyqow.exe	svchost.exe
PID 1828 wrote to memory of 1060	1828	csodyqow.exe	svchost.exe
PID 1828 wrote to memory of 1060	1828	csodyqow.exe	svchost.exe
PID 1828 wrote to memory of 1060	1828	csodyqow.exe	svchost.exe
PID 1828 wrote to memory of 1060	1828	csodyqow.exe	svchost.exe
PID 1828 wrote to memory of 1060	1828	csodyqow.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\097bc3c7d6f6f50a503fdb7a56e22a34.exe
"C:\Users\Admin\AppData\Local\Temp\097bc3c7d6f6f50a503fdb7a56e22a34.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:848

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\laqxdlbj\
2⤵
PID:1764

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\csodyqow.exe" C:\Windows\SysWOW64\laqxdlbj\
2⤵
PID:1488

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create laqxdlbj binPath= "C:\Windows\SysWOW64\laqxdlbj\csodyqow.exe /d\"C:\Users\Admin\AppData\Local\Temp\097bc3c7d6f6f50a503fdb7a56e22a34.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:1928

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description laqxdlbj "wifi internet conection"
2⤵
- Launches sc.exe
PID:1280

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start laqxdlbj
2⤵
- Launches sc.exe
PID:1160

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:920

C:\Windows\SysWOW64\laqxdlbj\csodyqow.exe
C:\Windows\SysWOW64\laqxdlbj\csodyqow.exe /d"C:\Users\Admin\AppData\Local\Temp\097bc3c7d6f6f50a503fdb7a56e22a34.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1828

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:1060

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\csodyqow.exe
Filesize
10.7MB

MD5
24525c26280a27fd349f373bcf7ced5c

SHA1
f330576315e182746c929f2096b217762d974dda

SHA256
d50478c198ca5b5696a5ee1ee1632d0a8e115f4adcbe7dc72006159c8e9ead0c

SHA512
8c50a3c04d1edc12806e0fb716b78d299703d8bb664f4ca425df9c0da6879aeaaa21b1ffbd5abecac993ac98fa9608b5a0954df07c11e04b54fc216d4b46cda6

Download Submit
C:\Windows\SysWOW64\laqxdlbj\csodyqow.exe
Filesize
10.7MB

MD5
24525c26280a27fd349f373bcf7ced5c

SHA1
f330576315e182746c929f2096b217762d974dda

SHA256
d50478c198ca5b5696a5ee1ee1632d0a8e115f4adcbe7dc72006159c8e9ead0c

SHA512
8c50a3c04d1edc12806e0fb716b78d299703d8bb664f4ca425df9c0da6879aeaaa21b1ffbd5abecac993ac98fa9608b5a0954df07c11e04b54fc216d4b46cda6

Download Submit
memory/848-55-0x00000000003C0000-0x00000000003D3000-memory.dmp

Filesize
76KB

Download
memory/848-57-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/848-58-0x00000000003C0000-0x00000000003D3000-memory.dmp

Filesize
76KB

Download
memory/848-63-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/1060-66-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1060-67-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1060-68-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1060-72-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1060-73-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1060-74-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1060-75-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1828-69-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads