tofsee | 1c72c9334aabb179971f5b154fbc75245add5765a6f8cc2648df5b6248698623

General

Target

file.exe
Size

299KB
MD5

d85ac9e4a318a111a633603b59a678e1
SHA1

ba5a2ce4a943803ad266ab79920e51ac1376f572
SHA256

1c72c9334aabb179971f5b154fbc75245add5765a6f8cc2648df5b6248698623
SHA512

da08eafc66990a1fb891db71a8c2a26553297c6a8b423ce6976b2893840f73d4c79365afddbd9af9d80cdf981b2da56b8323226c9a7d743bc090fee1048d09a4
SSDEEP

3072:CoXb6bh/LvtDRGXjO8GLQiYkSX5DB6gkrIGk0QuQjiMTE5hoa1M:CaC/LFgXj7GNBSVB6gwjQuQj9ha

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

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\imoaxwl = "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

1064 netsh.exe

pid	process
1064	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\imoaxwl\ImagePath = "C:\\Windows\\SysWOW64\\imoaxwl\\uanibivq.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1188 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

uanibivq.exe

pid process

1928 uanibivq.exe
Drops file in System32 directory 1 IoCs

Processes:

svchost.exe

description ioc process

File created C:\Windows\SysWOW64\config\systemprofile:.repos svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

uanibivq.exe

description pid process target process

PID 1928 set thread context of 1188 1928 uanibivq.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

1156 sc.exe
2036 sc.exe
1396 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
1188	svchost.exe

pid	process
1928	uanibivq.exe

description	ioc	process
File created	C:\Windows\SysWOW64\config\systemprofile:.repos	svchost.exe

description	pid	process	target process
PID 1928 set thread context of 1188	1928	uanibivq.exe	svchost.exe

pid	process
1156	sc.exe
2036	sc.exe
1396	sc.exe

Modifies data under HKEY_USERS 2 IoCs

Processes:

svchost.exe

description	ioc	process
Set value (data)	\REGISTRY\USER\.DEFAULT\Control Panel\Buses\Config0 = 9c383a3d26fccf0124edb47d450dd49d084297dce82e72baa49d1efdd07c7e1dadf6371e80cd945d24edb47d470dd49d024195daf71261adc06d04fda6e22673bbc9154961cda56810d48045743fe6af644490bdb27827ef905903c9f68d3c74bbc4103d29ffa46a15d9814c7c38e49d084295d9e13f4bb4c06d00fdadfd542cd49a450f3df8a36414edc70f3252a0f40948f48fb47a2cef905501c9f08d387287cc186270a4f93824dc81497d39ecad561fc2bd606d1ddd875c6fa1c48d541de5ad743d73a2e6367b9ec60b440dd49d642df4bdc1d743fce16d34fdc48e980fe7ad743d05f5a47312db9a4a7123e6a8502df4bd844d14dda46d34fdc48d541de4ad743d04cd945d24edb47d440dd49d642df4bd844d14dda46d34fdc48d541de4ad743d042b955d24	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Control Panel\Buses	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

file.exeuanibivq.exe

description	pid	process	target process
PID 1232 wrote to memory of 2028	1232	file.exe	cmd.exe
PID 1232 wrote to memory of 2028	1232	file.exe	cmd.exe
PID 1232 wrote to memory of 2028	1232	file.exe	cmd.exe
PID 1232 wrote to memory of 2028	1232	file.exe	cmd.exe
PID 1232 wrote to memory of 724	1232	file.exe	cmd.exe
PID 1232 wrote to memory of 724	1232	file.exe	cmd.exe
PID 1232 wrote to memory of 724	1232	file.exe	cmd.exe
PID 1232 wrote to memory of 724	1232	file.exe	cmd.exe
PID 1232 wrote to memory of 1156	1232	file.exe	sc.exe
PID 1232 wrote to memory of 1156	1232	file.exe	sc.exe
PID 1232 wrote to memory of 1156	1232	file.exe	sc.exe
PID 1232 wrote to memory of 1156	1232	file.exe	sc.exe
PID 1232 wrote to memory of 2036	1232	file.exe	sc.exe
PID 1232 wrote to memory of 2036	1232	file.exe	sc.exe
PID 1232 wrote to memory of 2036	1232	file.exe	sc.exe
PID 1232 wrote to memory of 2036	1232	file.exe	sc.exe
PID 1232 wrote to memory of 1396	1232	file.exe	sc.exe
PID 1232 wrote to memory of 1396	1232	file.exe	sc.exe
PID 1232 wrote to memory of 1396	1232	file.exe	sc.exe
PID 1232 wrote to memory of 1396	1232	file.exe	sc.exe
PID 1232 wrote to memory of 1064	1232	file.exe	netsh.exe
PID 1232 wrote to memory of 1064	1232	file.exe	netsh.exe
PID 1232 wrote to memory of 1064	1232	file.exe	netsh.exe
PID 1232 wrote to memory of 1064	1232	file.exe	netsh.exe
PID 1928 wrote to memory of 1188	1928	uanibivq.exe	svchost.exe
PID 1928 wrote to memory of 1188	1928	uanibivq.exe	svchost.exe
PID 1928 wrote to memory of 1188	1928	uanibivq.exe	svchost.exe
PID 1928 wrote to memory of 1188	1928	uanibivq.exe	svchost.exe
PID 1928 wrote to memory of 1188	1928	uanibivq.exe	svchost.exe
PID 1928 wrote to memory of 1188	1928	uanibivq.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1232

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\imoaxwl\
2⤵
PID:2028

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\uanibivq.exe" C:\Windows\SysWOW64\imoaxwl\
2⤵
PID:724

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create imoaxwl binPath= "C:\Windows\SysWOW64\imoaxwl\uanibivq.exe /d\"C:\Users\Admin\AppData\Local\Temp\file.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:1156

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description imoaxwl "wifi internet conection"
2⤵
- Launches sc.exe
PID:2036

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start imoaxwl
2⤵
- Launches sc.exe
PID:1396

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:1064

C:\Windows\SysWOW64\imoaxwl\uanibivq.exe
C:\Windows\SysWOW64\imoaxwl\uanibivq.exe /d"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1928

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:1188

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\uanibivq.exe
Filesize
10.8MB

MD5
934299b04979c0e26de6ed17ec5563d0

SHA1
d647082d90cb4475cd847777f184ddb78097df96

SHA256
9dd02bba3caf29a1dc7130b1f0a633157fe730c6f6af36c814a53a6b4df00515

SHA512
01e909d6cf801ea1aebc695b64816058c92116f8ca9cf03a5e1f3d3812f6e33bab12c7a7cb36689c7bef6b86c0a2164b64cec8731fe96a4c6d00d35fc69ffc39

Download Submit
C:\Windows\SysWOW64\imoaxwl\uanibivq.exe
Filesize
10.8MB

MD5
934299b04979c0e26de6ed17ec5563d0

SHA1
d647082d90cb4475cd847777f184ddb78097df96

SHA256
9dd02bba3caf29a1dc7130b1f0a633157fe730c6f6af36c814a53a6b4df00515

SHA512
01e909d6cf801ea1aebc695b64816058c92116f8ca9cf03a5e1f3d3812f6e33bab12c7a7cb36689c7bef6b86c0a2164b64cec8731fe96a4c6d00d35fc69ffc39

Download Submit
memory/724-59-0x0000000000000000-mapping.dmp

Download
memory/1064-65-0x0000000000000000-mapping.dmp

Download
memory/1156-61-0x0000000000000000-mapping.dmp

Download
memory/1188-83-0x00000000000A0000-0x00000000000A6000-memory.dmp

Filesize
24KB

Download
memory/1188-80-0x0000000001A00000-0x0000000001C0F000-memory.dmp

Filesize
2.1MB

Download
memory/1188-86-0x00000000000D0000-0x00000000000E0000-memory.dmp

Filesize
64KB

Download
memory/1188-79-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1188-73-0x0000000000089A6B-mapping.dmp

Download
memory/1188-88-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1188-70-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1188-72-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1232-67-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/1232-54-0x0000000075E01000-0x0000000075E03000-memory.dmp

Filesize
8KB

Download
memory/1232-66-0x000000000062C000-0x0000000000641000-memory.dmp

Filesize
84KB

Download
memory/1232-57-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/1232-56-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/1232-55-0x000000000062C000-0x0000000000641000-memory.dmp

Filesize
84KB

Download
memory/1396-63-0x0000000000000000-mapping.dmp

Download
memory/1928-75-0x000000000055C000-0x0000000000571000-memory.dmp

Filesize
84KB

Download
memory/1928-76-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2028-58-0x0000000000000000-mapping.dmp

Download
memory/2036-62-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads