tofsee | 0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90

Analysis

max time kernel
137s
max time network
151s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21-11-2024 07:49

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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

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

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\rcceoxpn = "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

pid	Process
2916	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\rcceoxpn\ImagePath = "C:\\Windows\\SysWOW64\\rcceoxpn\\gpygumud.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2560	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2732	gpygumud.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2732 set thread context of 2560	2732	gpygumud.exe	44

Launches sc.exe 3 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
1040	sc.exe
2676	sc.exe
2728	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gpygumud.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.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

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1392 wrote to memory of 2244	1392	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	31
PID 1392 wrote to memory of 2244	1392	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	31
PID 1392 wrote to memory of 2244	1392	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	31
PID 1392 wrote to memory of 2244	1392	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	31
PID 1392 wrote to memory of 2076	1392	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	33
PID 1392 wrote to memory of 2076	1392	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	33
PID 1392 wrote to memory of 2076	1392	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	33
PID 1392 wrote to memory of 2076	1392	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	33
PID 1392 wrote to memory of 1040	1392	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	35
PID 1392 wrote to memory of 1040	1392	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	35
PID 1392 wrote to memory of 1040	1392	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	35
PID 1392 wrote to memory of 1040	1392	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	35
PID 1392 wrote to memory of 2676	1392	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	37
PID 1392 wrote to memory of 2676	1392	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	37
PID 1392 wrote to memory of 2676	1392	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	37
PID 1392 wrote to memory of 2676	1392	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	37
PID 1392 wrote to memory of 2728	1392	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	39
PID 1392 wrote to memory of 2728	1392	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	39
PID 1392 wrote to memory of 2728	1392	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	39
PID 1392 wrote to memory of 2728	1392	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	39
PID 1392 wrote to memory of 2916	1392	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	42
PID 1392 wrote to memory of 2916	1392	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	42
PID 1392 wrote to memory of 2916	1392	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	42
PID 1392 wrote to memory of 2916	1392	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	42
PID 2732 wrote to memory of 2560	2732	gpygumud.exe	44
PID 2732 wrote to memory of 2560	2732	gpygumud.exe	44
PID 2732 wrote to memory of 2560	2732	gpygumud.exe	44
PID 2732 wrote to memory of 2560	2732	gpygumud.exe	44
PID 2732 wrote to memory of 2560	2732	gpygumud.exe	44
PID 2732 wrote to memory of 2560	2732	gpygumud.exe	44

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:1392
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rcceoxpn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2244
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gpygumud.exe" C:\Windows\SysWOW64\rcceoxpn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2076
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create rcceoxpn binPath= "C:\Windows\SysWOW64\rcceoxpn\gpygumud.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:1040
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description rcceoxpn "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2676
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start rcceoxpn
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2728
- 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:2916

C:\Windows\SysWOW64\rcceoxpn\gpygumud.exe
C:\Windows\SysWOW64\rcceoxpn\gpygumud.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:2732
- 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:2560

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
14.4MB

MD5
1db43d73da6ed0b6f844e3bf6428c7fc

SHA1
1a5d8a30061f99a8206a1ce2e832db661e3fd265

SHA256
17193963aa609399610c198e6211d9e0a855a95b4cfa927381e5dcbc4f1fd391

SHA512
559ee7ee4824db6e65d204368bc822a3624085d2b20fc9d99c2a29004af19fe7c5b8d9d285f01c55a29493c07abf86d450661b29aa82c691c2bdc3912c9df517

Download Submit
memory/1392-9-0x00000000002A0000-0x00000000002B3000-memory.dmp

Filesize
76KB

Download
memory/1392-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1392-2-0x00000000002A0000-0x00000000002B3000-memory.dmp

Filesize
76KB

Download
memory/1392-8-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/1392-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1392-1-0x0000000001730000-0x0000000001830000-memory.dmp

Filesize
1024KB

Download
memory/2560-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2560-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2560-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2560-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2560-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2732-15-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads