tofsee | 101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7

General

Target

101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe
Size

137KB
MD5

d621a78cf6343c38fa7356b7a2846ddd
SHA1

8037750152302eeffddab9e0efe93967bbafd582
SHA256

101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7
SHA512

6c3144dc20bc6048456bb6330b93df1566d969971334259e393c15e38c1f282e24f982ea28400b53283a6b538d4a7fcbe6283cad0fe24b8f45cd26bdc4c70ef4

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:

avzbenmy.exe

pid process

636 avzbenmy.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

4764 netsh.exe

pid	process
636	avzbenmy.exe

pid	process
4764	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\ujspello\ImagePath = "C:\\Windows\\SysWOW64\\ujspello\\avzbenmy.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:

101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

avzbenmy.exe

description pid process target process

PID 636 set thread context of 4120 636 avzbenmy.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

4208 sc.exe
3492 sc.exe
4136 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 636 set thread context of 4120	636	avzbenmy.exe	svchost.exe

pid	process
4208	sc.exe
3492	sc.exe
4136	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exeavzbenmy.exe

description	pid	process	target process
PID 3848 wrote to memory of 1516	3848	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	cmd.exe
PID 3848 wrote to memory of 1516	3848	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	cmd.exe
PID 3848 wrote to memory of 1516	3848	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	cmd.exe
PID 3848 wrote to memory of 5108	3848	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	cmd.exe
PID 3848 wrote to memory of 5108	3848	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	cmd.exe
PID 3848 wrote to memory of 5108	3848	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	cmd.exe
PID 3848 wrote to memory of 4136	3848	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	sc.exe
PID 3848 wrote to memory of 4136	3848	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	sc.exe
PID 3848 wrote to memory of 4136	3848	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	sc.exe
PID 3848 wrote to memory of 4208	3848	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	sc.exe
PID 3848 wrote to memory of 4208	3848	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	sc.exe
PID 3848 wrote to memory of 4208	3848	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	sc.exe
PID 3848 wrote to memory of 3492	3848	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	sc.exe
PID 3848 wrote to memory of 3492	3848	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	sc.exe
PID 3848 wrote to memory of 3492	3848	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	sc.exe
PID 3848 wrote to memory of 4764	3848	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	netsh.exe
PID 3848 wrote to memory of 4764	3848	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	netsh.exe
PID 3848 wrote to memory of 4764	3848	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	netsh.exe
PID 636 wrote to memory of 4120	636	avzbenmy.exe	svchost.exe
PID 636 wrote to memory of 4120	636	avzbenmy.exe	svchost.exe
PID 636 wrote to memory of 4120	636	avzbenmy.exe	svchost.exe
PID 636 wrote to memory of 4120	636	avzbenmy.exe	svchost.exe
PID 636 wrote to memory of 4120	636	avzbenmy.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe
"C:\Users\Admin\AppData\Local\Temp\101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3848

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ujspello\
2⤵
PID:1516

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\avzbenmy.exe" C:\Windows\SysWOW64\ujspello\
2⤵
PID:5108

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create ujspello binPath= "C:\Windows\SysWOW64\ujspello\avzbenmy.exe /d\"C:\Users\Admin\AppData\Local\Temp\101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:4136

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description ujspello "wifi internet conection"
2⤵
- Launches sc.exe
PID:4208

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start ujspello
2⤵
- Launches sc.exe
PID:3492

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:4764

C:\Windows\SysWOW64\ujspello\avzbenmy.exe
C:\Windows\SysWOW64\ujspello\avzbenmy.exe /d"C:\Users\Admin\AppData\Local\Temp\101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:636

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
PID:4120

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\avzbenmy.exe
Filesize
12.6MB

MD5
aaf4495053daf47df8d6474345f87e34

SHA1
b1ff558016361d22b276b24e45896ea46c858610

SHA256
4aa2934ff300abb8fcacbc0c12ca87bb8b6e65764120455f895ff9f0b29a4f45

SHA512
b51396acddf9a2f1581c6cb8fb01fee4f85f63619a8826a8b3557ccc8d5064848cb6cf8c464639d23a2977a72bccf419f8c62c1a2fd4f07e9ea7edcd952dd2be

Download Submit
C:\Windows\SysWOW64\ujspello\avzbenmy.exe
Filesize
12.6MB

MD5
aaf4495053daf47df8d6474345f87e34

SHA1
b1ff558016361d22b276b24e45896ea46c858610

SHA256
4aa2934ff300abb8fcacbc0c12ca87bb8b6e65764120455f895ff9f0b29a4f45

SHA512
b51396acddf9a2f1581c6cb8fb01fee4f85f63619a8826a8b3557ccc8d5064848cb6cf8c464639d23a2977a72bccf419f8c62c1a2fd4f07e9ea7edcd952dd2be

Download Submit
memory/636-139-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1516-131-0x0000000000000000-mapping.dmp

Download
memory/3492-136-0x0000000000000000-mapping.dmp

Download
memory/3848-130-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/4120-140-0x0000000000000000-mapping.dmp

Download
memory/4120-141-0x0000000000590000-0x00000000005A5000-memory.dmp

Filesize
84KB

Download
memory/4120-143-0x0000000000590000-0x00000000005A5000-memory.dmp

Filesize
84KB

Download
memory/4120-144-0x0000000000590000-0x00000000005A5000-memory.dmp

Filesize
84KB

Download
memory/4120-145-0x0000000000590000-0x00000000005A5000-memory.dmp

Filesize
84KB

Download
memory/4136-134-0x0000000000000000-mapping.dmp

Download
memory/4208-135-0x0000000000000000-mapping.dmp

Download
memory/4764-137-0x0000000000000000-mapping.dmp

Download
memory/5108-132-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads