tofsee | 100d8852de93e54659c2e9da519cab6934f488bf4c959889f978e49c8ba59e37

General

Target

100d8852de93e54659c2e9da519cab6934f488bf4c959889f978e49c8ba59e37.exe
Size

316KB
MD5

5c3ecbbd07a3a9ea27ab0bddb1a6176d
SHA1

171a1e5ad3fb212af8e30d73a70338c319b4f346
SHA256

100d8852de93e54659c2e9da519cab6934f488bf4c959889f978e49c8ba59e37
SHA512

0a09c1313c03249c72f19ffe84cb5c3758b9f1394f82aaac24f969009e21b5647cf9af3b3f35703a27c8496427692a8c715c72ac3bd9f918f7cb6ccf21dc8465

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
Creates new service(s) 1 TTPs
persistence

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

sqxtsbzq.exe

pid process

4044 sqxtsbzq.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

4860 netsh.exe

pid	process
4044	sqxtsbzq.exe

pid	process
4860	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\wbjcphuq\ImagePath = "C:\\Windows\\SysWOW64\\wbjcphuq\\sqxtsbzq.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

100d8852de93e54659c2e9da519cab6934f488bf4c959889f978e49c8ba59e37.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation	100d8852de93e54659c2e9da519cab6934f488bf4c959889f978e49c8ba59e37.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

sqxtsbzq.exe

description pid process target process

PID 4044 set thread context of 1472 4044 sqxtsbzq.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

4380 sc.exe
4292 sc.exe
4252 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	pid	process	target process
PID 4044 set thread context of 1472	4044	sqxtsbzq.exe	svchost.exe

pid	process
4380	sc.exe
4292	sc.exe
4252	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

100d8852de93e54659c2e9da519cab6934f488bf4c959889f978e49c8ba59e37.exesqxtsbzq.exe

description	pid	process	target process
PID 3316 wrote to memory of 4628	3316	100d8852de93e54659c2e9da519cab6934f488bf4c959889f978e49c8ba59e37.exe	cmd.exe
PID 3316 wrote to memory of 4628	3316	100d8852de93e54659c2e9da519cab6934f488bf4c959889f978e49c8ba59e37.exe	cmd.exe
PID 3316 wrote to memory of 4628	3316	100d8852de93e54659c2e9da519cab6934f488bf4c959889f978e49c8ba59e37.exe	cmd.exe
PID 3316 wrote to memory of 1324	3316	100d8852de93e54659c2e9da519cab6934f488bf4c959889f978e49c8ba59e37.exe	cmd.exe
PID 3316 wrote to memory of 1324	3316	100d8852de93e54659c2e9da519cab6934f488bf4c959889f978e49c8ba59e37.exe	cmd.exe
PID 3316 wrote to memory of 1324	3316	100d8852de93e54659c2e9da519cab6934f488bf4c959889f978e49c8ba59e37.exe	cmd.exe
PID 3316 wrote to memory of 4380	3316	100d8852de93e54659c2e9da519cab6934f488bf4c959889f978e49c8ba59e37.exe	sc.exe
PID 3316 wrote to memory of 4380	3316	100d8852de93e54659c2e9da519cab6934f488bf4c959889f978e49c8ba59e37.exe	sc.exe
PID 3316 wrote to memory of 4380	3316	100d8852de93e54659c2e9da519cab6934f488bf4c959889f978e49c8ba59e37.exe	sc.exe
PID 3316 wrote to memory of 4292	3316	100d8852de93e54659c2e9da519cab6934f488bf4c959889f978e49c8ba59e37.exe	sc.exe
PID 3316 wrote to memory of 4292	3316	100d8852de93e54659c2e9da519cab6934f488bf4c959889f978e49c8ba59e37.exe	sc.exe
PID 3316 wrote to memory of 4292	3316	100d8852de93e54659c2e9da519cab6934f488bf4c959889f978e49c8ba59e37.exe	sc.exe
PID 3316 wrote to memory of 4252	3316	100d8852de93e54659c2e9da519cab6934f488bf4c959889f978e49c8ba59e37.exe	sc.exe
PID 3316 wrote to memory of 4252	3316	100d8852de93e54659c2e9da519cab6934f488bf4c959889f978e49c8ba59e37.exe	sc.exe
PID 3316 wrote to memory of 4252	3316	100d8852de93e54659c2e9da519cab6934f488bf4c959889f978e49c8ba59e37.exe	sc.exe
PID 3316 wrote to memory of 4860	3316	100d8852de93e54659c2e9da519cab6934f488bf4c959889f978e49c8ba59e37.exe	netsh.exe
PID 3316 wrote to memory of 4860	3316	100d8852de93e54659c2e9da519cab6934f488bf4c959889f978e49c8ba59e37.exe	netsh.exe
PID 3316 wrote to memory of 4860	3316	100d8852de93e54659c2e9da519cab6934f488bf4c959889f978e49c8ba59e37.exe	netsh.exe
PID 4044 wrote to memory of 1472	4044	sqxtsbzq.exe	svchost.exe
PID 4044 wrote to memory of 1472	4044	sqxtsbzq.exe	svchost.exe
PID 4044 wrote to memory of 1472	4044	sqxtsbzq.exe	svchost.exe
PID 4044 wrote to memory of 1472	4044	sqxtsbzq.exe	svchost.exe
PID 4044 wrote to memory of 1472	4044	sqxtsbzq.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\100d8852de93e54659c2e9da519cab6934f488bf4c959889f978e49c8ba59e37.exe
"C:\Users\Admin\AppData\Local\Temp\100d8852de93e54659c2e9da519cab6934f488bf4c959889f978e49c8ba59e37.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3316

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wbjcphuq\
2⤵
PID:4628

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\sqxtsbzq.exe" C:\Windows\SysWOW64\wbjcphuq\
2⤵
PID:1324

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create wbjcphuq binPath= "C:\Windows\SysWOW64\wbjcphuq\sqxtsbzq.exe /d\"C:\Users\Admin\AppData\Local\Temp\100d8852de93e54659c2e9da519cab6934f488bf4c959889f978e49c8ba59e37.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:4380

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description wbjcphuq "wifi internet conection"
2⤵
- Launches sc.exe
PID:4292

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start wbjcphuq
2⤵
- Launches sc.exe
PID:4252

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:4860

C:\Windows\SysWOW64\wbjcphuq\sqxtsbzq.exe
C:\Windows\SysWOW64\wbjcphuq\sqxtsbzq.exe /d"C:\Users\Admin\AppData\Local\Temp\100d8852de93e54659c2e9da519cab6934f488bf4c959889f978e49c8ba59e37.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4044

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
PID:1472

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

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\sqxtsbzq.exe
Filesize
13.4MB

MD5
4552ddbc02e787b87936feb977b62449

SHA1
665d10cd1cd2c8492bf16505c4358f115018cde3

SHA256
0ceecda1da989499df99c5c72c41fc89e9cd7abab9b698fb865d73b72d263c8a

SHA512
03566d60591f5d6684ded5c12fed44c0614d58bd26742c4349af54c5eaed03c5db824e7a23ffb58df2da14dabe23871635b5410155c7fbc974b35f78d7ed6897

Download Submit
C:\Windows\SysWOW64\wbjcphuq\sqxtsbzq.exe
Filesize
13.4MB

MD5
4552ddbc02e787b87936feb977b62449

SHA1
665d10cd1cd2c8492bf16505c4358f115018cde3

SHA256
0ceecda1da989499df99c5c72c41fc89e9cd7abab9b698fb865d73b72d263c8a

SHA512
03566d60591f5d6684ded5c12fed44c0614d58bd26742c4349af54c5eaed03c5db824e7a23ffb58df2da14dabe23871635b5410155c7fbc974b35f78d7ed6897

Download Submit
memory/1324-133-0x0000000000000000-mapping.dmp

Download
memory/1472-150-0x0000000001030000-0x0000000001045000-memory.dmp

Filesize
84KB

Download
memory/1472-149-0x0000000001030000-0x0000000001045000-memory.dmp

Filesize
84KB

Download
memory/1472-144-0x0000000001030000-0x0000000001045000-memory.dmp

Filesize
84KB

Download
memory/1472-143-0x0000000000000000-mapping.dmp

Download
memory/3316-131-0x00000000054B0000-0x00000000054BF000-memory.dmp

Filesize
60KB

Download
memory/3316-134-0x0000000000400000-0x00000000052AF000-memory.dmp

Filesize
78.7MB

Download
memory/3316-130-0x00000000054B0000-0x00000000054BF000-memory.dmp

Filesize
60KB

Download
memory/3316-140-0x0000000000400000-0x00000000052AF000-memory.dmp

Filesize
78.7MB

Download
memory/4044-142-0x00000000055EC000-0x00000000055FB000-memory.dmp

Filesize
60KB

Download
memory/4044-146-0x00000000055EC000-0x00000000055FB000-memory.dmp

Filesize
60KB

Download
memory/4044-148-0x0000000000400000-0x00000000052AF000-memory.dmp

Filesize
78.7MB

Download
memory/4252-138-0x0000000000000000-mapping.dmp

Download
memory/4292-137-0x0000000000000000-mapping.dmp

Download
memory/4380-136-0x0000000000000000-mapping.dmp

Download
memory/4628-132-0x0000000000000000-mapping.dmp

Download
memory/4860-139-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads