tofsee | 09519dcbbda00e527d6e23fa992978426938709819a7dd9cd9bd114ecdb915c9

General

Target

b0ef9fcbeb328309d351e64c5a9d9b28.exe
Size

12.6MB
MD5

b0ef9fcbeb328309d351e64c5a9d9b28
SHA1

300fd154888d07410f05d93617af4ea2087ff7d3
SHA256

09519dcbbda00e527d6e23fa992978426938709819a7dd9cd9bd114ecdb915c9
SHA512

a10b85f67fc87e579420141436195d91288b58fa105552f5d8abe670248d583f7ec18999238662ea267b03dd2b38e322b41cac8344b498fa1556c903563fd2a6

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Windows security bypass 2 TTPs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112
Creates new service(s) 1 TTPs
persistence

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

wboorqgl.exe

pid process

820 wboorqgl.exe
Modifies Windows Firewall 1 TTPs
evasion

Modify Existing Service
T1031
Sets service image path in registry 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1060

Modify Registry
T1112
Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

840 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

wboorqgl.exe

description pid process target process

PID 820 set thread context of 840 820 wboorqgl.exe svchost.exe
Launches sc.exe
Sc.exe is a Windows utlilty to control services on the system.

pid	process
820	wboorqgl.exe

pid	process
840	svchost.exe

description	pid	process	target process
PID 820 set thread context of 840	820	wboorqgl.exe	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

b0ef9fcbeb328309d351e64c5a9d9b28.exewboorqgl.exe

description	pid	process	target process
PID 1204 wrote to memory of 1192	1204	b0ef9fcbeb328309d351e64c5a9d9b28.exe	cmd.exe
PID 1204 wrote to memory of 1192	1204	b0ef9fcbeb328309d351e64c5a9d9b28.exe	cmd.exe
PID 1204 wrote to memory of 1192	1204	b0ef9fcbeb328309d351e64c5a9d9b28.exe	cmd.exe
PID 1204 wrote to memory of 1192	1204	b0ef9fcbeb328309d351e64c5a9d9b28.exe	cmd.exe
PID 1204 wrote to memory of 1168	1204	b0ef9fcbeb328309d351e64c5a9d9b28.exe	cmd.exe
PID 1204 wrote to memory of 1168	1204	b0ef9fcbeb328309d351e64c5a9d9b28.exe	cmd.exe
PID 1204 wrote to memory of 1168	1204	b0ef9fcbeb328309d351e64c5a9d9b28.exe	cmd.exe
PID 1204 wrote to memory of 1168	1204	b0ef9fcbeb328309d351e64c5a9d9b28.exe	cmd.exe
PID 1204 wrote to memory of 1260	1204	b0ef9fcbeb328309d351e64c5a9d9b28.exe	sc.exe
PID 1204 wrote to memory of 1260	1204	b0ef9fcbeb328309d351e64c5a9d9b28.exe	sc.exe
PID 1204 wrote to memory of 1260	1204	b0ef9fcbeb328309d351e64c5a9d9b28.exe	sc.exe
PID 1204 wrote to memory of 1260	1204	b0ef9fcbeb328309d351e64c5a9d9b28.exe	sc.exe
PID 1204 wrote to memory of 1624	1204	b0ef9fcbeb328309d351e64c5a9d9b28.exe	sc.exe
PID 1204 wrote to memory of 1624	1204	b0ef9fcbeb328309d351e64c5a9d9b28.exe	sc.exe
PID 1204 wrote to memory of 1624	1204	b0ef9fcbeb328309d351e64c5a9d9b28.exe	sc.exe
PID 1204 wrote to memory of 1624	1204	b0ef9fcbeb328309d351e64c5a9d9b28.exe	sc.exe
PID 1204 wrote to memory of 400	1204	b0ef9fcbeb328309d351e64c5a9d9b28.exe	sc.exe
PID 1204 wrote to memory of 400	1204	b0ef9fcbeb328309d351e64c5a9d9b28.exe	sc.exe
PID 1204 wrote to memory of 400	1204	b0ef9fcbeb328309d351e64c5a9d9b28.exe	sc.exe
PID 1204 wrote to memory of 400	1204	b0ef9fcbeb328309d351e64c5a9d9b28.exe	sc.exe
PID 1204 wrote to memory of 1016	1204	b0ef9fcbeb328309d351e64c5a9d9b28.exe	netsh.exe
PID 1204 wrote to memory of 1016	1204	b0ef9fcbeb328309d351e64c5a9d9b28.exe	netsh.exe
PID 1204 wrote to memory of 1016	1204	b0ef9fcbeb328309d351e64c5a9d9b28.exe	netsh.exe
PID 1204 wrote to memory of 1016	1204	b0ef9fcbeb328309d351e64c5a9d9b28.exe	netsh.exe
PID 820 wrote to memory of 840	820	wboorqgl.exe	svchost.exe
PID 820 wrote to memory of 840	820	wboorqgl.exe	svchost.exe
PID 820 wrote to memory of 840	820	wboorqgl.exe	svchost.exe
PID 820 wrote to memory of 840	820	wboorqgl.exe	svchost.exe
PID 820 wrote to memory of 840	820	wboorqgl.exe	svchost.exe
PID 820 wrote to memory of 840	820	wboorqgl.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\b0ef9fcbeb328309d351e64c5a9d9b28.exe
"C:\Users\Admin\AppData\Local\Temp\b0ef9fcbeb328309d351e64c5a9d9b28.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1204

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hsrfpgdd\
2⤵
PID:1192

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wboorqgl.exe" C:\Windows\SysWOW64\hsrfpgdd\
2⤵
PID:1168

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create hsrfpgdd binPath= "C:\Windows\SysWOW64\hsrfpgdd\wboorqgl.exe /d\"C:\Users\Admin\AppData\Local\Temp\b0ef9fcbeb328309d351e64c5a9d9b28.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
PID:1260

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description hsrfpgdd "wifi internet conection"
2⤵
PID:1624

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start hsrfpgdd
2⤵
PID:400

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⤵
PID:1016

C:\Windows\SysWOW64\hsrfpgdd\wboorqgl.exe
C:\Windows\SysWOW64\hsrfpgdd\wboorqgl.exe /d"C:\Users\Admin\AppData\Local\Temp\b0ef9fcbeb328309d351e64c5a9d9b28.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:820

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Deletes itself
PID:840

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

New Service

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

New Service

1

T1050

Defense Evasion

Disabling Security Tools

Modify Registry

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\wboorqgl.exe
MD5
ae7fbe91467a7cc17ef45732bb8f2783

SHA1
365bd28bf8adc33a5da9919f706fc726ceea3e4a

SHA256
142b53017d10e973e097d483cda5f9b27e230d6f01ec4997599f56a9367c5041

SHA512
896d04f796c716c25406bcc278c22d11bd436585c451d7e6e3ee56337e720a806c2aa4cfbd1406f11f28cd8b5892f7a3cef8e43e18f244869a7d309eb7d95524

Download Submit
C:\Windows\SysWOW64\hsrfpgdd\wboorqgl.exe
MD5
ae7fbe91467a7cc17ef45732bb8f2783

SHA1
365bd28bf8adc33a5da9919f706fc726ceea3e4a

SHA256
142b53017d10e973e097d483cda5f9b27e230d6f01ec4997599f56a9367c5041

SHA512
896d04f796c716c25406bcc278c22d11bd436585c451d7e6e3ee56337e720a806c2aa4cfbd1406f11f28cd8b5892f7a3cef8e43e18f244869a7d309eb7d95524

Download Submit
memory/400-7-0x0000000000000000-mapping.dmp

Download
memory/840-10-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/840-11-0x0000000000089A6B-mapping.dmp

Download
memory/1016-8-0x0000000000000000-mapping.dmp

Download
memory/1168-3-0x0000000000000000-mapping.dmp

Download
memory/1192-2-0x0000000000000000-mapping.dmp

Download
memory/1260-5-0x0000000000000000-mapping.dmp

Download
memory/1624-6-0x0000000000000000-mapping.dmp

Download

Analysis

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