tofsee | 1c8743843e7dcdc405dcfdc5745a05d66f8807740d0d7e3cd169172b9559c0d8

General

Target

1c8743843e7dcdc405dcfdc5745a05d66f8807740d0d7e3cd169172b9559c0d8.exe
Size

138KB
MD5

e70dc7260416996a8b62ff3b6e0420f6
SHA1

3ad2783d4bc4ffd6d0a2dd4a61f16229b27839d0
SHA256

1c8743843e7dcdc405dcfdc5745a05d66f8807740d0d7e3cd169172b9559c0d8
SHA512

260dfd93c94cf67c91345a1d8c6a5c2399633e25b53b8ad3d87b246235893a385728c86229f36ac257fe20d5dd979248af2c90b5b93f9dc402a0d59b6b71662e

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

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\tsnujszo = "0"	svchost.exe

Creates new service(s) 1 TTPs
persistence

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

kovfftdz.exe

pid process

1712 kovfftdz.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

1736 netsh.exe

pid	process
1712	kovfftdz.exe

pid	process
1736	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\tsnujszo\ImagePath = "C:\\Windows\\SysWOW64\\tsnujszo\\kovfftdz.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1440 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

kovfftdz.exe

description pid process target process

PID 1712 set thread context of 1440 1712 kovfftdz.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

2020 sc.exe
1452 sc.exe
1968 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
1440	svchost.exe

description	pid	process	target process
PID 1712 set thread context of 1440	1712	kovfftdz.exe	svchost.exe

pid	process
2020	sc.exe
1452	sc.exe
1968	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

1c8743843e7dcdc405dcfdc5745a05d66f8807740d0d7e3cd169172b9559c0d8.exekovfftdz.exe

description	pid	process	target process
PID 732 wrote to memory of 2044	732	1c8743843e7dcdc405dcfdc5745a05d66f8807740d0d7e3cd169172b9559c0d8.exe	cmd.exe
PID 732 wrote to memory of 2044	732	1c8743843e7dcdc405dcfdc5745a05d66f8807740d0d7e3cd169172b9559c0d8.exe	cmd.exe
PID 732 wrote to memory of 2044	732	1c8743843e7dcdc405dcfdc5745a05d66f8807740d0d7e3cd169172b9559c0d8.exe	cmd.exe
PID 732 wrote to memory of 2044	732	1c8743843e7dcdc405dcfdc5745a05d66f8807740d0d7e3cd169172b9559c0d8.exe	cmd.exe
PID 732 wrote to memory of 2012	732	1c8743843e7dcdc405dcfdc5745a05d66f8807740d0d7e3cd169172b9559c0d8.exe	cmd.exe
PID 732 wrote to memory of 2012	732	1c8743843e7dcdc405dcfdc5745a05d66f8807740d0d7e3cd169172b9559c0d8.exe	cmd.exe
PID 732 wrote to memory of 2012	732	1c8743843e7dcdc405dcfdc5745a05d66f8807740d0d7e3cd169172b9559c0d8.exe	cmd.exe
PID 732 wrote to memory of 2012	732	1c8743843e7dcdc405dcfdc5745a05d66f8807740d0d7e3cd169172b9559c0d8.exe	cmd.exe
PID 732 wrote to memory of 2020	732	1c8743843e7dcdc405dcfdc5745a05d66f8807740d0d7e3cd169172b9559c0d8.exe	sc.exe
PID 732 wrote to memory of 2020	732	1c8743843e7dcdc405dcfdc5745a05d66f8807740d0d7e3cd169172b9559c0d8.exe	sc.exe
PID 732 wrote to memory of 2020	732	1c8743843e7dcdc405dcfdc5745a05d66f8807740d0d7e3cd169172b9559c0d8.exe	sc.exe
PID 732 wrote to memory of 2020	732	1c8743843e7dcdc405dcfdc5745a05d66f8807740d0d7e3cd169172b9559c0d8.exe	sc.exe
PID 732 wrote to memory of 1452	732	1c8743843e7dcdc405dcfdc5745a05d66f8807740d0d7e3cd169172b9559c0d8.exe	sc.exe
PID 732 wrote to memory of 1452	732	1c8743843e7dcdc405dcfdc5745a05d66f8807740d0d7e3cd169172b9559c0d8.exe	sc.exe
PID 732 wrote to memory of 1452	732	1c8743843e7dcdc405dcfdc5745a05d66f8807740d0d7e3cd169172b9559c0d8.exe	sc.exe
PID 732 wrote to memory of 1452	732	1c8743843e7dcdc405dcfdc5745a05d66f8807740d0d7e3cd169172b9559c0d8.exe	sc.exe
PID 732 wrote to memory of 1968	732	1c8743843e7dcdc405dcfdc5745a05d66f8807740d0d7e3cd169172b9559c0d8.exe	sc.exe
PID 732 wrote to memory of 1968	732	1c8743843e7dcdc405dcfdc5745a05d66f8807740d0d7e3cd169172b9559c0d8.exe	sc.exe
PID 732 wrote to memory of 1968	732	1c8743843e7dcdc405dcfdc5745a05d66f8807740d0d7e3cd169172b9559c0d8.exe	sc.exe
PID 732 wrote to memory of 1968	732	1c8743843e7dcdc405dcfdc5745a05d66f8807740d0d7e3cd169172b9559c0d8.exe	sc.exe
PID 732 wrote to memory of 1736	732	1c8743843e7dcdc405dcfdc5745a05d66f8807740d0d7e3cd169172b9559c0d8.exe	netsh.exe
PID 732 wrote to memory of 1736	732	1c8743843e7dcdc405dcfdc5745a05d66f8807740d0d7e3cd169172b9559c0d8.exe	netsh.exe
PID 732 wrote to memory of 1736	732	1c8743843e7dcdc405dcfdc5745a05d66f8807740d0d7e3cd169172b9559c0d8.exe	netsh.exe
PID 732 wrote to memory of 1736	732	1c8743843e7dcdc405dcfdc5745a05d66f8807740d0d7e3cd169172b9559c0d8.exe	netsh.exe
PID 1712 wrote to memory of 1440	1712	kovfftdz.exe	svchost.exe
PID 1712 wrote to memory of 1440	1712	kovfftdz.exe	svchost.exe
PID 1712 wrote to memory of 1440	1712	kovfftdz.exe	svchost.exe
PID 1712 wrote to memory of 1440	1712	kovfftdz.exe	svchost.exe
PID 1712 wrote to memory of 1440	1712	kovfftdz.exe	svchost.exe
PID 1712 wrote to memory of 1440	1712	kovfftdz.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\1c8743843e7dcdc405dcfdc5745a05d66f8807740d0d7e3cd169172b9559c0d8.exe
"C:\Users\Admin\AppData\Local\Temp\1c8743843e7dcdc405dcfdc5745a05d66f8807740d0d7e3cd169172b9559c0d8.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:732

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tsnujszo\
2⤵
PID:2044

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kovfftdz.exe" C:\Windows\SysWOW64\tsnujszo\
2⤵
PID:2012

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create tsnujszo binPath= "C:\Windows\SysWOW64\tsnujszo\kovfftdz.exe /d\"C:\Users\Admin\AppData\Local\Temp\1c8743843e7dcdc405dcfdc5745a05d66f8807740d0d7e3cd169172b9559c0d8.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:2020

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description tsnujszo "wifi internet conection"
2⤵
- Launches sc.exe
PID:1452

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start tsnujszo
2⤵
- Launches sc.exe
PID:1968

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:1736

C:\Windows\SysWOW64\tsnujszo\kovfftdz.exe
C:\Windows\SysWOW64\tsnujszo\kovfftdz.exe /d"C:\Users\Admin\AppData\Local\Temp\1c8743843e7dcdc405dcfdc5745a05d66f8807740d0d7e3cd169172b9559c0d8.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1712

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:1440

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\kovfftdz.exe
Filesize
13.4MB

MD5
1b890496b674564443855f9ea270ad5c

SHA1
e8e7a05e73f0a6eaae82c99a529b7c1ac726f06b

SHA256
dcee4127e5254c5e40c07fca7653a56f7f0c37813deb8c48d494ce6284515339

SHA512
ba39f6da6065ee3b230f044f136345f6af785dec4a12b464a286cc0e88da9ccc72f9cfe785f39face781bcbea6eae3661303d1814844439fb8f97e27018b8e6e

Download Submit
C:\Windows\SysWOW64\tsnujszo\kovfftdz.exe
Filesize
13.4MB

MD5
1b890496b674564443855f9ea270ad5c

SHA1
e8e7a05e73f0a6eaae82c99a529b7c1ac726f06b

SHA256
dcee4127e5254c5e40c07fca7653a56f7f0c37813deb8c48d494ce6284515339

SHA512
ba39f6da6065ee3b230f044f136345f6af785dec4a12b464a286cc0e88da9ccc72f9cfe785f39face781bcbea6eae3661303d1814844439fb8f97e27018b8e6e

Download Submit
memory/732-55-0x0000000076561000-0x0000000076563000-memory.dmp

Filesize
8KB

Download
memory/732-54-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1440-70-0x0000000000089A6B-mapping.dmp

Download
memory/1440-75-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1440-74-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1440-67-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1440-69-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1452-60-0x0000000000000000-mapping.dmp

Download
memory/1712-65-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1736-63-0x0000000000000000-mapping.dmp

Download
memory/1968-61-0x0000000000000000-mapping.dmp

Download
memory/2012-57-0x0000000000000000-mapping.dmp

Download
memory/2020-59-0x0000000000000000-mapping.dmp

Download
memory/2044-56-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads