tofsee | 7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7

General

Target

7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe
Size

10.8MB
MD5

4b4802c89976506b504b279dd3d58c89
SHA1

2652b1943e3580254b59617b8d6a1cae361d3bd1
SHA256

7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7
SHA512

0d5d41af269d083d8fb532a9bed8bb16a0d4d113c4faf7520fea1237b5cea6cddbda4a1f484450a96e11b0ad8c5290a7a15c03326df335335f95a6ff4723554e

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\nyjecvnh = "0"	svchost.exe

Creates new service(s) 1 TTPs
persistence

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

xxyjefdl.exe

pid process

748 xxyjefdl.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

1132 netsh.exe

pid	process
748	xxyjefdl.exe

pid	process
1132	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\nyjecvnh\ImagePath = "C:\\Windows\\SysWOW64\\nyjecvnh\\xxyjefdl.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1692 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

xxyjefdl.exe

description pid process target process

PID 748 set thread context of 1692 748 xxyjefdl.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

1992 sc.exe
1960 sc.exe
676 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
1692	svchost.exe

description	pid	process	target process
PID 748 set thread context of 1692	748	xxyjefdl.exe	svchost.exe

pid	process
1992	sc.exe
1960	sc.exe
676	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exexxyjefdl.exe

description	pid	process	target process
PID 952 wrote to memory of 1052	952	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	cmd.exe
PID 952 wrote to memory of 1052	952	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	cmd.exe
PID 952 wrote to memory of 1052	952	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	cmd.exe
PID 952 wrote to memory of 1052	952	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	cmd.exe
PID 952 wrote to memory of 2032	952	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	cmd.exe
PID 952 wrote to memory of 2032	952	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	cmd.exe
PID 952 wrote to memory of 2032	952	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	cmd.exe
PID 952 wrote to memory of 2032	952	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	cmd.exe
PID 952 wrote to memory of 1992	952	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	sc.exe
PID 952 wrote to memory of 1992	952	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	sc.exe
PID 952 wrote to memory of 1992	952	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	sc.exe
PID 952 wrote to memory of 1992	952	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	sc.exe
PID 952 wrote to memory of 1960	952	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	sc.exe
PID 952 wrote to memory of 1960	952	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	sc.exe
PID 952 wrote to memory of 1960	952	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	sc.exe
PID 952 wrote to memory of 1960	952	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	sc.exe
PID 952 wrote to memory of 676	952	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	sc.exe
PID 952 wrote to memory of 676	952	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	sc.exe
PID 952 wrote to memory of 676	952	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	sc.exe
PID 952 wrote to memory of 676	952	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	sc.exe
PID 952 wrote to memory of 1132	952	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	netsh.exe
PID 952 wrote to memory of 1132	952	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	netsh.exe
PID 952 wrote to memory of 1132	952	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	netsh.exe
PID 952 wrote to memory of 1132	952	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	netsh.exe
PID 748 wrote to memory of 1692	748	xxyjefdl.exe	svchost.exe
PID 748 wrote to memory of 1692	748	xxyjefdl.exe	svchost.exe
PID 748 wrote to memory of 1692	748	xxyjefdl.exe	svchost.exe
PID 748 wrote to memory of 1692	748	xxyjefdl.exe	svchost.exe
PID 748 wrote to memory of 1692	748	xxyjefdl.exe	svchost.exe
PID 748 wrote to memory of 1692	748	xxyjefdl.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe
"C:\Users\Admin\AppData\Local\Temp\7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:952

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nyjecvnh\
2⤵
PID:1052

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xxyjefdl.exe" C:\Windows\SysWOW64\nyjecvnh\
2⤵
PID:2032

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create nyjecvnh binPath= "C:\Windows\SysWOW64\nyjecvnh\xxyjefdl.exe /d\"C:\Users\Admin\AppData\Local\Temp\7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:1992

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description nyjecvnh "wifi internet conection"
2⤵
- Launches sc.exe
PID:1960

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start nyjecvnh
2⤵
- Launches sc.exe
PID:676

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:1132

C:\Windows\SysWOW64\nyjecvnh\xxyjefdl.exe
C:\Windows\SysWOW64\nyjecvnh\xxyjefdl.exe /d"C:\Users\Admin\AppData\Local\Temp\7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:748

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:1692

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

New Service

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

New Service

1

T1050

Defense Evasion

Disabling Security Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\xxyjefdl.exe
Filesize
13.0MB

MD5
19e3975b58a3b202ec012d7cbe1a039b

SHA1
ffb5ca7638b36f629aef4bfba6afb34997bfa453

SHA256
55487488fc9525a3b001222693e80f6d20ef7b68b02096c689817b65784fe583

SHA512
30289c3cf6dafbb88a2cff594fea19906a4222e90f5bb1ed92698ee4dcf936c70407b1f8a15dd72b0578dbd8a97f70d725894ef82250cf4a337474a318b2fb64

Download Submit
C:\Windows\SysWOW64\nyjecvnh\xxyjefdl.exe
Filesize
13.0MB

MD5
19e3975b58a3b202ec012d7cbe1a039b

SHA1
ffb5ca7638b36f629aef4bfba6afb34997bfa453

SHA256
55487488fc9525a3b001222693e80f6d20ef7b68b02096c689817b65784fe583

SHA512
30289c3cf6dafbb88a2cff594fea19906a4222e90f5bb1ed92698ee4dcf936c70407b1f8a15dd72b0578dbd8a97f70d725894ef82250cf4a337474a318b2fb64

Download Submit
memory/676-63-0x0000000000000000-mapping.dmp

Download
memory/748-78-0x0000000000400000-0x0000000000C25000-memory.dmp

Filesize
8.1MB

Download
memory/748-76-0x0000000000D6B000-0x0000000000D79000-memory.dmp

Filesize
56KB

Download
memory/952-56-0x0000000000DAB000-0x0000000000DB9000-memory.dmp

Filesize
56KB

Download
memory/952-58-0x0000000000400000-0x0000000000C25000-memory.dmp

Filesize
8.1MB

Download
memory/952-57-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/952-54-0x00000000750C1000-0x00000000750C3000-memory.dmp

Filesize
8KB

Download
memory/952-67-0x0000000000400000-0x0000000000C25000-memory.dmp

Filesize
8.1MB

Download
memory/952-66-0x0000000000DAB000-0x0000000000DB9000-memory.dmp

Filesize
56KB

Download
memory/1052-55-0x0000000000000000-mapping.dmp

Download
memory/1132-65-0x0000000000000000-mapping.dmp

Download
memory/1692-70-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1692-72-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1692-73-0x0000000000089A6B-mapping.dmp

Download
memory/1692-79-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1692-80-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1960-62-0x0000000000000000-mapping.dmp

Download
memory/1992-61-0x0000000000000000-mapping.dmp

Download
memory/2032-59-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads