tofsee | 0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90

General

Target

0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe
Size

13.0MB
MD5

38a85adfdcbda17fe01e01c8cf39289d
SHA1

eb8f22a914d9f6a8b7b7cca8394db6a261675c8c
SHA256

0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90
SHA512

ecf37aa2f234b9a795e3e0ef04e4713eacdcc50d3b56a0c6c3a495cf23e848ea84acd5313094c639ff4a310cf5c67b8a2e271dfe7a5e1a1eecf6e0c813ea1acd
SSDEEP

49152:hOFK1llllllllllllllllllllllllllllllllllllllllllllllllllllllllllq:9g

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Tofsee family
tofsee

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\ytaxiyb = "0"	svchost.exe

Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002
Modifies Windows Firewall 2 TTPs 1 IoCs
evasion

Windows Service
T1543.003

Disable or Modify System Firewall
T1562.004

Processes:

netsh.exe

pid process

2116 netsh.exe

pid	process
2116	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\ytaxiyb\ImagePath = "C:\\Windows\\SysWOW64\\ytaxiyb\\yezcluup.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2692 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

yezcluup.exe

pid process

2024 yezcluup.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

yezcluup.exe

description pid process target process

PID 2024 set thread context of 2692 2024 yezcluup.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

2336 sc.exe
2376 sc.exe
1428 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2692	svchost.exe

pid	process
2024	yezcluup.exe

description	pid	process	target process
PID 2024 set thread context of 2692	2024	yezcluup.exe	svchost.exe

pid	process
2336	sc.exe
2376	sc.exe
1428	sc.exe

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

Processes:

netsh.exe

description	ioc	process
Key queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exesc.exesvchost.execmd.execmd.exesc.exesc.exenetsh.exeyezcluup.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	yezcluup.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exeyezcluup.exe

description	pid	process	target process
PID 2356 wrote to memory of 2272	2356	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	cmd.exe
PID 2356 wrote to memory of 2272	2356	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	cmd.exe
PID 2356 wrote to memory of 2272	2356	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	cmd.exe
PID 2356 wrote to memory of 2272	2356	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	cmd.exe
PID 2356 wrote to memory of 2504	2356	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	cmd.exe
PID 2356 wrote to memory of 2504	2356	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	cmd.exe
PID 2356 wrote to memory of 2504	2356	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	cmd.exe
PID 2356 wrote to memory of 2504	2356	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	cmd.exe
PID 2356 wrote to memory of 2376	2356	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	sc.exe
PID 2356 wrote to memory of 2376	2356	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	sc.exe
PID 2356 wrote to memory of 2376	2356	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	sc.exe
PID 2356 wrote to memory of 2376	2356	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	sc.exe
PID 2356 wrote to memory of 1428	2356	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	sc.exe
PID 2356 wrote to memory of 1428	2356	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	sc.exe
PID 2356 wrote to memory of 1428	2356	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	sc.exe
PID 2356 wrote to memory of 1428	2356	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	sc.exe
PID 2356 wrote to memory of 2336	2356	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	sc.exe
PID 2356 wrote to memory of 2336	2356	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	sc.exe
PID 2356 wrote to memory of 2336	2356	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	sc.exe
PID 2356 wrote to memory of 2336	2356	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	sc.exe
PID 2356 wrote to memory of 2116	2356	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	netsh.exe
PID 2356 wrote to memory of 2116	2356	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	netsh.exe
PID 2356 wrote to memory of 2116	2356	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	netsh.exe
PID 2356 wrote to memory of 2116	2356	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	netsh.exe
PID 2024 wrote to memory of 2692	2024	yezcluup.exe	svchost.exe
PID 2024 wrote to memory of 2692	2024	yezcluup.exe	svchost.exe
PID 2024 wrote to memory of 2692	2024	yezcluup.exe	svchost.exe
PID 2024 wrote to memory of 2692	2024	yezcluup.exe	svchost.exe
PID 2024 wrote to memory of 2692	2024	yezcluup.exe	svchost.exe
PID 2024 wrote to memory of 2692	2024	yezcluup.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe
"C:\Users\Admin\AppData\Local\Temp\0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2356
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ytaxiyb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2272
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\yezcluup.exe" C:\Windows\SysWOW64\ytaxiyb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2504
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ytaxiyb binPath= "C:\Windows\SysWOW64\ytaxiyb\yezcluup.exe /d\"C:\Users\Admin\AppData\Local\Temp\0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2376
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ytaxiyb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1428
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ytaxiyb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2336
- 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
  - Event Triggered Execution: Netsh Helper DLL
  - System Location Discovery: System Language Discovery
  PID:2116

C:\Windows\SysWOW64\ytaxiyb\yezcluup.exe
C:\Windows\SysWOW64\ytaxiyb\yezcluup.exe /d"C:\Users\Admin\AppData\Local\Temp\0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2024
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2692

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

2

T1562

Disable or Modify System Firewall

1

T1562.004

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\yezcluup.exe

Filesize
10.2MB

MD5
500132525037764991f4546648f56b38

SHA1
4cb334551f901350b1de545c1cffb3aa8bf95856

SHA256
fbfc2bcd3658150894eb76df504b56b0e2f867ee18d5884603b7121a1afc3b2d

SHA512
c64714ca5a06234777a5bd372dd7bd4938ee194305df72fce41b24c6c095214b3d971b02e714442bcd5ad6413f3f5d0dfc91332dfa58d304a296dd427abd2f53

Download Submit
memory/2024-13-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/2356-2-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/2356-3-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/2356-8-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/2692-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2692-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2692-12-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2692-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2692-9-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads