tofsee | 559761803b195f7451158b3f142fc3eec2411a5decd14346564e66c9ee94fb78

General

Target

559761803b195f7451158b3f142fc3eec2411a5decd14346564e66c9ee94fb78.exe
Size

99KB
MD5

bd9639044643025556c8fbd6271fe5e5
SHA1

3bedbea22ced1f577ba4925400b36a615221b72b
SHA256

559761803b195f7451158b3f142fc3eec2411a5decd14346564e66c9ee94fb78
SHA512

131f147c38e09778f35ebae81b8fab8fbd2a00f2ca49ef81092c3848e3f1645f51b263bdc6828a4c84c6998fe4f44c2b7f6afa9bf86fe2b153e2d0e894898393

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\ttnsrqlq = "0"	svchost.exe

Creates new service(s) 1 TTPs
persistence

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

jwknppna.exe

pid process

1680 jwknppna.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

1312 netsh.exe

pid	process
1680	jwknppna.exe

pid	process
1312	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\ttnsrqlq\ImagePath = "C:\\Windows\\SysWOW64\\ttnsrqlq\\jwknppna.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1560 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

jwknppna.exe

description pid process target process

PID 1680 set thread context of 1560 1680 jwknppna.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

1172 sc.exe
1952 sc.exe
572 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
1560	svchost.exe

description	pid	process	target process
PID 1680 set thread context of 1560	1680	jwknppna.exe	svchost.exe

pid	process
1172	sc.exe
1952	sc.exe
572	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

559761803b195f7451158b3f142fc3eec2411a5decd14346564e66c9ee94fb78.exejwknppna.exe

description	pid	process	target process
PID 912 wrote to memory of 2032	912	559761803b195f7451158b3f142fc3eec2411a5decd14346564e66c9ee94fb78.exe	cmd.exe
PID 912 wrote to memory of 2032	912	559761803b195f7451158b3f142fc3eec2411a5decd14346564e66c9ee94fb78.exe	cmd.exe
PID 912 wrote to memory of 2032	912	559761803b195f7451158b3f142fc3eec2411a5decd14346564e66c9ee94fb78.exe	cmd.exe
PID 912 wrote to memory of 2032	912	559761803b195f7451158b3f142fc3eec2411a5decd14346564e66c9ee94fb78.exe	cmd.exe
PID 912 wrote to memory of 1984	912	559761803b195f7451158b3f142fc3eec2411a5decd14346564e66c9ee94fb78.exe	cmd.exe
PID 912 wrote to memory of 1984	912	559761803b195f7451158b3f142fc3eec2411a5decd14346564e66c9ee94fb78.exe	cmd.exe
PID 912 wrote to memory of 1984	912	559761803b195f7451158b3f142fc3eec2411a5decd14346564e66c9ee94fb78.exe	cmd.exe
PID 912 wrote to memory of 1984	912	559761803b195f7451158b3f142fc3eec2411a5decd14346564e66c9ee94fb78.exe	cmd.exe
PID 912 wrote to memory of 1172	912	559761803b195f7451158b3f142fc3eec2411a5decd14346564e66c9ee94fb78.exe	sc.exe
PID 912 wrote to memory of 1172	912	559761803b195f7451158b3f142fc3eec2411a5decd14346564e66c9ee94fb78.exe	sc.exe
PID 912 wrote to memory of 1172	912	559761803b195f7451158b3f142fc3eec2411a5decd14346564e66c9ee94fb78.exe	sc.exe
PID 912 wrote to memory of 1172	912	559761803b195f7451158b3f142fc3eec2411a5decd14346564e66c9ee94fb78.exe	sc.exe
PID 912 wrote to memory of 1952	912	559761803b195f7451158b3f142fc3eec2411a5decd14346564e66c9ee94fb78.exe	sc.exe
PID 912 wrote to memory of 1952	912	559761803b195f7451158b3f142fc3eec2411a5decd14346564e66c9ee94fb78.exe	sc.exe
PID 912 wrote to memory of 1952	912	559761803b195f7451158b3f142fc3eec2411a5decd14346564e66c9ee94fb78.exe	sc.exe
PID 912 wrote to memory of 1952	912	559761803b195f7451158b3f142fc3eec2411a5decd14346564e66c9ee94fb78.exe	sc.exe
PID 912 wrote to memory of 572	912	559761803b195f7451158b3f142fc3eec2411a5decd14346564e66c9ee94fb78.exe	sc.exe
PID 912 wrote to memory of 572	912	559761803b195f7451158b3f142fc3eec2411a5decd14346564e66c9ee94fb78.exe	sc.exe
PID 912 wrote to memory of 572	912	559761803b195f7451158b3f142fc3eec2411a5decd14346564e66c9ee94fb78.exe	sc.exe
PID 912 wrote to memory of 572	912	559761803b195f7451158b3f142fc3eec2411a5decd14346564e66c9ee94fb78.exe	sc.exe
PID 1680 wrote to memory of 1560	1680	jwknppna.exe	svchost.exe
PID 1680 wrote to memory of 1560	1680	jwknppna.exe	svchost.exe
PID 1680 wrote to memory of 1560	1680	jwknppna.exe	svchost.exe
PID 1680 wrote to memory of 1560	1680	jwknppna.exe	svchost.exe
PID 1680 wrote to memory of 1560	1680	jwknppna.exe	svchost.exe
PID 1680 wrote to memory of 1560	1680	jwknppna.exe	svchost.exe
PID 912 wrote to memory of 1312	912	559761803b195f7451158b3f142fc3eec2411a5decd14346564e66c9ee94fb78.exe	netsh.exe
PID 912 wrote to memory of 1312	912	559761803b195f7451158b3f142fc3eec2411a5decd14346564e66c9ee94fb78.exe	netsh.exe
PID 912 wrote to memory of 1312	912	559761803b195f7451158b3f142fc3eec2411a5decd14346564e66c9ee94fb78.exe	netsh.exe
PID 912 wrote to memory of 1312	912	559761803b195f7451158b3f142fc3eec2411a5decd14346564e66c9ee94fb78.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\559761803b195f7451158b3f142fc3eec2411a5decd14346564e66c9ee94fb78.exe
"C:\Users\Admin\AppData\Local\Temp\559761803b195f7451158b3f142fc3eec2411a5decd14346564e66c9ee94fb78.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:912

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ttnsrqlq\
2⤵
PID:2032

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jwknppna.exe" C:\Windows\SysWOW64\ttnsrqlq\
2⤵
PID:1984

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create ttnsrqlq binPath= "C:\Windows\SysWOW64\ttnsrqlq\jwknppna.exe /d\"C:\Users\Admin\AppData\Local\Temp\559761803b195f7451158b3f142fc3eec2411a5decd14346564e66c9ee94fb78.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:1172

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description ttnsrqlq "wifi internet conection"
2⤵
- Launches sc.exe
PID:1952

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start ttnsrqlq
2⤵
- Launches sc.exe
PID:572

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:1312

C:\Windows\SysWOW64\ttnsrqlq\jwknppna.exe
C:\Windows\SysWOW64\ttnsrqlq\jwknppna.exe /d"C:\Users\Admin\AppData\Local\Temp\559761803b195f7451158b3f142fc3eec2411a5decd14346564e66c9ee94fb78.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1680

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:1560

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\jwknppna.exe
Filesize
10.4MB

MD5
2e833eb36ec6ebb30b70c7949fd42306

SHA1
30c34aad381a5cf822b099ef23dcfada9c34aec9

SHA256
47ded88158642314c2b106734efbec9609cd9beb3fa771f5b209a790ba682c5b

SHA512
a3f2e64534ee61dcd487e492e63b60e2fdf6063208a34c08f247d23c590cf684b558a47fb51508a9423063ab86fe598bbfc42dbfb8e66429165b2a420caf1c0d

Download Submit
C:\Windows\SysWOW64\ttnsrqlq\jwknppna.exe
Filesize
10.4MB

MD5
2e833eb36ec6ebb30b70c7949fd42306

SHA1
30c34aad381a5cf822b099ef23dcfada9c34aec9

SHA256
47ded88158642314c2b106734efbec9609cd9beb3fa771f5b209a790ba682c5b

SHA512
a3f2e64534ee61dcd487e492e63b60e2fdf6063208a34c08f247d23c590cf684b558a47fb51508a9423063ab86fe598bbfc42dbfb8e66429165b2a420caf1c0d

Download Submit
memory/572-61-0x0000000000000000-mapping.dmp

Download
memory/912-55-0x0000000074DB1000-0x0000000074DB3000-memory.dmp

Filesize
8KB

Download
memory/912-54-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1172-59-0x0000000000000000-mapping.dmp

Download
memory/1312-72-0x0000000000000000-mapping.dmp

Download
memory/1560-65-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/1560-67-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/1560-68-0x00000000000D9A6B-mapping.dmp

Download
memory/1560-74-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/1560-75-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/1680-63-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1952-60-0x0000000000000000-mapping.dmp

Download
memory/1984-57-0x0000000000000000-mapping.dmp

Download
memory/2032-56-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads