tofsee | fe70a88244756a21fa321b27001ea72d524003de90356fa9797ce218c794ff5d

General

Target

fe70a88244756a21fa321b27001ea72d524003de90356fa9797ce218c794ff5d.exe
Size

11.0MB
MD5

734c2faea43e5b51f8261cd2873bb940
SHA1

3bb1bf5d3658bd1975fa35859d1ba35641735097
SHA256

fe70a88244756a21fa321b27001ea72d524003de90356fa9797ce218c794ff5d
SHA512

b77d4b10a09db22cb01f40fb1268ab05a335be58f6848b5978adfe25a8042ee73a9b1279aaffcbce24ba47232344c074787581b9bf47d09a70906dd55fcd173b

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

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\klvnttvh = "0"	svchost.exe

Creates new service(s) 1 TTPs
persistence

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

dvemjwic.exe

pid process

436 dvemjwic.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

820 netsh.exe

pid	process
436	dvemjwic.exe

pid	process
820	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\klvnttvh\ImagePath = "C:\\Windows\\SysWOW64\\klvnttvh\\dvemjwic.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

772 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

dvemjwic.exe

description pid process target process

PID 436 set thread context of 772 436 dvemjwic.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

320 sc.exe
1136 sc.exe
528 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
772	svchost.exe

description	pid	process	target process
PID 436 set thread context of 772	436	dvemjwic.exe	svchost.exe

pid	process
320	sc.exe
1136	sc.exe
528	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

fe70a88244756a21fa321b27001ea72d524003de90356fa9797ce218c794ff5d.exedvemjwic.exe

description	pid	process	target process
PID 1720 wrote to memory of 1468	1720	fe70a88244756a21fa321b27001ea72d524003de90356fa9797ce218c794ff5d.exe	cmd.exe
PID 1720 wrote to memory of 1468	1720	fe70a88244756a21fa321b27001ea72d524003de90356fa9797ce218c794ff5d.exe	cmd.exe
PID 1720 wrote to memory of 1468	1720	fe70a88244756a21fa321b27001ea72d524003de90356fa9797ce218c794ff5d.exe	cmd.exe
PID 1720 wrote to memory of 1468	1720	fe70a88244756a21fa321b27001ea72d524003de90356fa9797ce218c794ff5d.exe	cmd.exe
PID 1720 wrote to memory of 1404	1720	fe70a88244756a21fa321b27001ea72d524003de90356fa9797ce218c794ff5d.exe	cmd.exe
PID 1720 wrote to memory of 1404	1720	fe70a88244756a21fa321b27001ea72d524003de90356fa9797ce218c794ff5d.exe	cmd.exe
PID 1720 wrote to memory of 1404	1720	fe70a88244756a21fa321b27001ea72d524003de90356fa9797ce218c794ff5d.exe	cmd.exe
PID 1720 wrote to memory of 1404	1720	fe70a88244756a21fa321b27001ea72d524003de90356fa9797ce218c794ff5d.exe	cmd.exe
PID 1720 wrote to memory of 1136	1720	fe70a88244756a21fa321b27001ea72d524003de90356fa9797ce218c794ff5d.exe	sc.exe
PID 1720 wrote to memory of 1136	1720	fe70a88244756a21fa321b27001ea72d524003de90356fa9797ce218c794ff5d.exe	sc.exe
PID 1720 wrote to memory of 1136	1720	fe70a88244756a21fa321b27001ea72d524003de90356fa9797ce218c794ff5d.exe	sc.exe
PID 1720 wrote to memory of 1136	1720	fe70a88244756a21fa321b27001ea72d524003de90356fa9797ce218c794ff5d.exe	sc.exe
PID 1720 wrote to memory of 528	1720	fe70a88244756a21fa321b27001ea72d524003de90356fa9797ce218c794ff5d.exe	sc.exe
PID 1720 wrote to memory of 528	1720	fe70a88244756a21fa321b27001ea72d524003de90356fa9797ce218c794ff5d.exe	sc.exe
PID 1720 wrote to memory of 528	1720	fe70a88244756a21fa321b27001ea72d524003de90356fa9797ce218c794ff5d.exe	sc.exe
PID 1720 wrote to memory of 528	1720	fe70a88244756a21fa321b27001ea72d524003de90356fa9797ce218c794ff5d.exe	sc.exe
PID 1720 wrote to memory of 320	1720	fe70a88244756a21fa321b27001ea72d524003de90356fa9797ce218c794ff5d.exe	sc.exe
PID 1720 wrote to memory of 320	1720	fe70a88244756a21fa321b27001ea72d524003de90356fa9797ce218c794ff5d.exe	sc.exe
PID 1720 wrote to memory of 320	1720	fe70a88244756a21fa321b27001ea72d524003de90356fa9797ce218c794ff5d.exe	sc.exe
PID 1720 wrote to memory of 320	1720	fe70a88244756a21fa321b27001ea72d524003de90356fa9797ce218c794ff5d.exe	sc.exe
PID 1720 wrote to memory of 820	1720	fe70a88244756a21fa321b27001ea72d524003de90356fa9797ce218c794ff5d.exe	netsh.exe
PID 1720 wrote to memory of 820	1720	fe70a88244756a21fa321b27001ea72d524003de90356fa9797ce218c794ff5d.exe	netsh.exe
PID 1720 wrote to memory of 820	1720	fe70a88244756a21fa321b27001ea72d524003de90356fa9797ce218c794ff5d.exe	netsh.exe
PID 1720 wrote to memory of 820	1720	fe70a88244756a21fa321b27001ea72d524003de90356fa9797ce218c794ff5d.exe	netsh.exe
PID 436 wrote to memory of 772	436	dvemjwic.exe	svchost.exe
PID 436 wrote to memory of 772	436	dvemjwic.exe	svchost.exe
PID 436 wrote to memory of 772	436	dvemjwic.exe	svchost.exe
PID 436 wrote to memory of 772	436	dvemjwic.exe	svchost.exe
PID 436 wrote to memory of 772	436	dvemjwic.exe	svchost.exe
PID 436 wrote to memory of 772	436	dvemjwic.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\fe70a88244756a21fa321b27001ea72d524003de90356fa9797ce218c794ff5d.exe
"C:\Users\Admin\AppData\Local\Temp\fe70a88244756a21fa321b27001ea72d524003de90356fa9797ce218c794ff5d.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1720

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\klvnttvh\
2⤵
PID:1468

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\dvemjwic.exe" C:\Windows\SysWOW64\klvnttvh\
2⤵
PID:1404

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create klvnttvh binPath= "C:\Windows\SysWOW64\klvnttvh\dvemjwic.exe /d\"C:\Users\Admin\AppData\Local\Temp\fe70a88244756a21fa321b27001ea72d524003de90356fa9797ce218c794ff5d.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:1136

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description klvnttvh "wifi internet conection"
2⤵
- Launches sc.exe
PID:528

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start klvnttvh
2⤵
- Launches sc.exe
PID:320

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:820

C:\Windows\SysWOW64\klvnttvh\dvemjwic.exe
C:\Windows\SysWOW64\klvnttvh\dvemjwic.exe /d"C:\Users\Admin\AppData\Local\Temp\fe70a88244756a21fa321b27001ea72d524003de90356fa9797ce218c794ff5d.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:436

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:772

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\dvemjwic.exe
Filesize
249KB

MD5
c27a7cc7182dd6b97b3c89525f1a3493

SHA1
62812fdba1547197a101522442fa708f1ce97e02

SHA256
3d55d4ccf4503394eb1f2f856fedcdd74816ec41febe22c4ffa55c445ec446e5

SHA512
52b66a8751cd1514d9e3b585a882f9077ba992f93d70d5a82264e2e5b290ed7e71e2f58206d63e53c92992d7d390f011414a7896a97cbb87feb05f12fc61fc76

Download Submit
C:\Windows\SysWOW64\klvnttvh\dvemjwic.exe
Filesize
454KB

MD5
394f2344f46ef7fe4cdbdbd40fe8657e

SHA1
0b3c73b06a48f54e3ba670281760de0888cf11fa

SHA256
628727d6a0791935fe6a742aaaede0da2e369435c69d23e48a905cdefd81232a

SHA512
48f0fbb7887a1b84768c522c9b2a7519f0499c3ff2fed052cf433a9b6319e2db8f4635e49501ffd916aba8e66d9026986f462add048f01f5a66a6af0d4c8aa4e

Download Submit
memory/320-64-0x0000000000000000-mapping.dmp

Download
memory/436-71-0x0000000000400000-0x0000000002C68000-memory.dmp

Filesize
40.4MB

Download
memory/436-70-0x0000000002E0B000-0x0000000002E19000-memory.dmp

Filesize
56KB

Download
memory/436-80-0x0000000000400000-0x0000000002C68000-memory.dmp

Filesize
40.4MB

Download
memory/436-79-0x0000000002E0B000-0x0000000002E19000-memory.dmp

Filesize
56KB

Download
memory/528-63-0x0000000000000000-mapping.dmp

Download
memory/772-82-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/772-81-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/772-72-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/772-74-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/772-75-0x0000000000089A6B-mapping.dmp

Download
memory/820-66-0x0000000000000000-mapping.dmp

Download
memory/1136-62-0x0000000000000000-mapping.dmp

Download
memory/1404-60-0x0000000000000000-mapping.dmp

Download
memory/1468-57-0x0000000000000000-mapping.dmp

Download
memory/1720-59-0x0000000000400000-0x0000000002C68000-memory.dmp

Filesize
40.4MB

Download
memory/1720-58-0x00000000003A0000-0x00000000003B3000-memory.dmp

Filesize
76KB

Download
memory/1720-56-0x0000000000230000-0x0000000000330000-memory.dmp

Filesize
1024KB

Download
memory/1720-55-0x0000000076191000-0x0000000076193000-memory.dmp

Filesize
8KB

Download
memory/1720-67-0x0000000000400000-0x0000000002C68000-memory.dmp

Filesize
40.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads