tofsee | 1c7dfbd2d886ecd2ebfa7f4c6f6e4b9e4fd0f87f628effbfd62a53c3070861b1

General

Target

1c7dfbd2d886ecd2ebfa7f4c6f6e4b9e4fd0f87f628effbfd62a53c3070861b1.exe
Size

102KB
MD5

b615ff689101509b760415b534294205
SHA1

5850c0b7a2783482c093aeed72ab212b0dabe6fe
SHA256

1c7dfbd2d886ecd2ebfa7f4c6f6e4b9e4fd0f87f628effbfd62a53c3070861b1
SHA512

1eb7f5b08d9fd19a26f1f75368dbd9e0af74c9bfeb361a8d5ad89c67c3b9562038d78e4621df2723b8176e28418c74500c5dd6ac9ac04b898783d8e0384fc3b4

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\xcpeioop = "0"	svchost.exe

Creates new service(s) 1 TTPs
persistence

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

uoqnhdns.exe

pid process

616 uoqnhdns.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

732 netsh.exe

pid	process
616	uoqnhdns.exe

pid	process
732	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\xcpeioop\ImagePath = "C:\\Windows\\SysWOW64\\xcpeioop\\uoqnhdns.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1524 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

uoqnhdns.exe

description pid process target process

PID 616 set thread context of 1524 616 uoqnhdns.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

1464 sc.exe
388 sc.exe
1472 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
1524	svchost.exe

description	pid	process	target process
PID 616 set thread context of 1524	616	uoqnhdns.exe	svchost.exe

pid	process
1464	sc.exe
388	sc.exe
1472	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

1c7dfbd2d886ecd2ebfa7f4c6f6e4b9e4fd0f87f628effbfd62a53c3070861b1.exeuoqnhdns.exe

description	pid	process	target process
PID 836 wrote to memory of 1476	836	1c7dfbd2d886ecd2ebfa7f4c6f6e4b9e4fd0f87f628effbfd62a53c3070861b1.exe	cmd.exe
PID 836 wrote to memory of 1476	836	1c7dfbd2d886ecd2ebfa7f4c6f6e4b9e4fd0f87f628effbfd62a53c3070861b1.exe	cmd.exe
PID 836 wrote to memory of 1476	836	1c7dfbd2d886ecd2ebfa7f4c6f6e4b9e4fd0f87f628effbfd62a53c3070861b1.exe	cmd.exe
PID 836 wrote to memory of 1476	836	1c7dfbd2d886ecd2ebfa7f4c6f6e4b9e4fd0f87f628effbfd62a53c3070861b1.exe	cmd.exe
PID 836 wrote to memory of 1620	836	1c7dfbd2d886ecd2ebfa7f4c6f6e4b9e4fd0f87f628effbfd62a53c3070861b1.exe	cmd.exe
PID 836 wrote to memory of 1620	836	1c7dfbd2d886ecd2ebfa7f4c6f6e4b9e4fd0f87f628effbfd62a53c3070861b1.exe	cmd.exe
PID 836 wrote to memory of 1620	836	1c7dfbd2d886ecd2ebfa7f4c6f6e4b9e4fd0f87f628effbfd62a53c3070861b1.exe	cmd.exe
PID 836 wrote to memory of 1620	836	1c7dfbd2d886ecd2ebfa7f4c6f6e4b9e4fd0f87f628effbfd62a53c3070861b1.exe	cmd.exe
PID 836 wrote to memory of 1464	836	1c7dfbd2d886ecd2ebfa7f4c6f6e4b9e4fd0f87f628effbfd62a53c3070861b1.exe	sc.exe
PID 836 wrote to memory of 1464	836	1c7dfbd2d886ecd2ebfa7f4c6f6e4b9e4fd0f87f628effbfd62a53c3070861b1.exe	sc.exe
PID 836 wrote to memory of 1464	836	1c7dfbd2d886ecd2ebfa7f4c6f6e4b9e4fd0f87f628effbfd62a53c3070861b1.exe	sc.exe
PID 836 wrote to memory of 1464	836	1c7dfbd2d886ecd2ebfa7f4c6f6e4b9e4fd0f87f628effbfd62a53c3070861b1.exe	sc.exe
PID 836 wrote to memory of 388	836	1c7dfbd2d886ecd2ebfa7f4c6f6e4b9e4fd0f87f628effbfd62a53c3070861b1.exe	sc.exe
PID 836 wrote to memory of 388	836	1c7dfbd2d886ecd2ebfa7f4c6f6e4b9e4fd0f87f628effbfd62a53c3070861b1.exe	sc.exe
PID 836 wrote to memory of 388	836	1c7dfbd2d886ecd2ebfa7f4c6f6e4b9e4fd0f87f628effbfd62a53c3070861b1.exe	sc.exe
PID 836 wrote to memory of 388	836	1c7dfbd2d886ecd2ebfa7f4c6f6e4b9e4fd0f87f628effbfd62a53c3070861b1.exe	sc.exe
PID 836 wrote to memory of 1472	836	1c7dfbd2d886ecd2ebfa7f4c6f6e4b9e4fd0f87f628effbfd62a53c3070861b1.exe	sc.exe
PID 836 wrote to memory of 1472	836	1c7dfbd2d886ecd2ebfa7f4c6f6e4b9e4fd0f87f628effbfd62a53c3070861b1.exe	sc.exe
PID 836 wrote to memory of 1472	836	1c7dfbd2d886ecd2ebfa7f4c6f6e4b9e4fd0f87f628effbfd62a53c3070861b1.exe	sc.exe
PID 836 wrote to memory of 1472	836	1c7dfbd2d886ecd2ebfa7f4c6f6e4b9e4fd0f87f628effbfd62a53c3070861b1.exe	sc.exe
PID 616 wrote to memory of 1524	616	uoqnhdns.exe	svchost.exe
PID 616 wrote to memory of 1524	616	uoqnhdns.exe	svchost.exe
PID 616 wrote to memory of 1524	616	uoqnhdns.exe	svchost.exe
PID 616 wrote to memory of 1524	616	uoqnhdns.exe	svchost.exe
PID 616 wrote to memory of 1524	616	uoqnhdns.exe	svchost.exe
PID 616 wrote to memory of 1524	616	uoqnhdns.exe	svchost.exe
PID 836 wrote to memory of 732	836	1c7dfbd2d886ecd2ebfa7f4c6f6e4b9e4fd0f87f628effbfd62a53c3070861b1.exe	netsh.exe
PID 836 wrote to memory of 732	836	1c7dfbd2d886ecd2ebfa7f4c6f6e4b9e4fd0f87f628effbfd62a53c3070861b1.exe	netsh.exe
PID 836 wrote to memory of 732	836	1c7dfbd2d886ecd2ebfa7f4c6f6e4b9e4fd0f87f628effbfd62a53c3070861b1.exe	netsh.exe
PID 836 wrote to memory of 732	836	1c7dfbd2d886ecd2ebfa7f4c6f6e4b9e4fd0f87f628effbfd62a53c3070861b1.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\1c7dfbd2d886ecd2ebfa7f4c6f6e4b9e4fd0f87f628effbfd62a53c3070861b1.exe
"C:\Users\Admin\AppData\Local\Temp\1c7dfbd2d886ecd2ebfa7f4c6f6e4b9e4fd0f87f628effbfd62a53c3070861b1.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:836

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xcpeioop\
2⤵
PID:1476

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\uoqnhdns.exe" C:\Windows\SysWOW64\xcpeioop\
2⤵
PID:1620

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create xcpeioop binPath= "C:\Windows\SysWOW64\xcpeioop\uoqnhdns.exe /d\"C:\Users\Admin\AppData\Local\Temp\1c7dfbd2d886ecd2ebfa7f4c6f6e4b9e4fd0f87f628effbfd62a53c3070861b1.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:1464

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description xcpeioop "wifi internet conection"
2⤵
- Launches sc.exe
PID:388

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start xcpeioop
2⤵
- Launches sc.exe
PID:1472

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:732

C:\Windows\SysWOW64\xcpeioop\uoqnhdns.exe
C:\Windows\SysWOW64\xcpeioop\uoqnhdns.exe /d"C:\Users\Admin\AppData\Local\Temp\1c7dfbd2d886ecd2ebfa7f4c6f6e4b9e4fd0f87f628effbfd62a53c3070861b1.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:616

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:1524

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\uoqnhdns.exe
Filesize
13.6MB

MD5
b228ebe3e4812cbc87623ce486b412ce

SHA1
1d31fd7d24f41138e8d8faf49ec89f717ebac0e5

SHA256
983d4ae2cf317502f34acbb6475678219aac06db99844780f253707d3c08b2c6

SHA512
dfdce8aafdf9f0403166094fece44dd84bde58253781b1da28612a4df4482885bcee60f4d4613b32e5576e897b1b986c5e4f4f3361ee3e685d9cf45ded46c315

Download Submit
C:\Windows\SysWOW64\xcpeioop\uoqnhdns.exe
Filesize
13.6MB

MD5
b228ebe3e4812cbc87623ce486b412ce

SHA1
1d31fd7d24f41138e8d8faf49ec89f717ebac0e5

SHA256
983d4ae2cf317502f34acbb6475678219aac06db99844780f253707d3c08b2c6

SHA512
dfdce8aafdf9f0403166094fece44dd84bde58253781b1da28612a4df4482885bcee60f4d4613b32e5576e897b1b986c5e4f4f3361ee3e685d9cf45ded46c315

Download Submit
memory/388-60-0x0000000000000000-mapping.dmp

Download
memory/616-63-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/732-73-0x0000000000000000-mapping.dmp

Download
memory/836-55-0x0000000075721000-0x0000000075723000-memory.dmp

Filesize
8KB

Download
memory/836-54-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1464-59-0x0000000000000000-mapping.dmp

Download
memory/1472-61-0x0000000000000000-mapping.dmp

Download
memory/1476-56-0x0000000000000000-mapping.dmp

Download
memory/1524-68-0x0000000000089A6B-mapping.dmp

Download
memory/1524-67-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1524-65-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1524-72-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1524-75-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1620-57-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads