tofsee | e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
20-11-2024 20:00

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General

Target

e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe
Size

13.9MB
MD5

74d022d0ed2f393fe0b210879b3456bb
SHA1

ae369acf20264ab7cb35b3301b12b14ad6e71d73
SHA256

e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f
SHA512

1ab7e4dd174754e0187e31149ec93c56f1a495bc4c4c815737df4d01d19eb50c9533bd947ccef75c3344bc17de62103ffa157e8c8a1cad9b8b60badd784b95a0
SSDEEP

393216:BMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMl:BMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMl

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\jmqyzgpy = "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
2628	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\jmqyzgpy\ImagePath = "C:\\Windows\\SysWOW64\\jmqyzgpy\\lyhefkwj.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
1004	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2584	lyhefkwj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2584 set thread context of 1004	2584	lyhefkwj.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2496	sc.exe
1548	sc.exe
2068	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	sc.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	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	lyhefkwj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2720 wrote to memory of 2728	2720	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	31
PID 2720 wrote to memory of 2728	2720	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	31
PID 2720 wrote to memory of 2728	2720	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	31
PID 2720 wrote to memory of 2728	2720	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	31
PID 2720 wrote to memory of 2808	2720	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	33
PID 2720 wrote to memory of 2808	2720	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	33
PID 2720 wrote to memory of 2808	2720	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	33
PID 2720 wrote to memory of 2808	2720	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	33
PID 2720 wrote to memory of 2496	2720	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	35
PID 2720 wrote to memory of 2496	2720	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	35
PID 2720 wrote to memory of 2496	2720	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	35
PID 2720 wrote to memory of 2496	2720	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	35
PID 2720 wrote to memory of 1548	2720	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	37
PID 2720 wrote to memory of 1548	2720	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	37
PID 2720 wrote to memory of 1548	2720	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	37
PID 2720 wrote to memory of 1548	2720	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	37
PID 2720 wrote to memory of 2068	2720	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	39
PID 2720 wrote to memory of 2068	2720	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	39
PID 2720 wrote to memory of 2068	2720	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	39
PID 2720 wrote to memory of 2068	2720	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	39
PID 2720 wrote to memory of 2628	2720	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	42
PID 2720 wrote to memory of 2628	2720	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	42
PID 2720 wrote to memory of 2628	2720	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	42
PID 2720 wrote to memory of 2628	2720	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	42
PID 2584 wrote to memory of 1004	2584	lyhefkwj.exe	44
PID 2584 wrote to memory of 1004	2584	lyhefkwj.exe	44
PID 2584 wrote to memory of 1004	2584	lyhefkwj.exe	44
PID 2584 wrote to memory of 1004	2584	lyhefkwj.exe	44
PID 2584 wrote to memory of 1004	2584	lyhefkwj.exe	44
PID 2584 wrote to memory of 1004	2584	lyhefkwj.exe	44

C:\Users\Admin\AppData\Local\Temp\e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe
"C:\Users\Admin\AppData\Local\Temp\e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2720
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jmqyzgpy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2728
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\lyhefkwj.exe" C:\Windows\SysWOW64\jmqyzgpy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2808
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create jmqyzgpy binPath= "C:\Windows\SysWOW64\jmqyzgpy\lyhefkwj.exe /d\"C:\Users\Admin\AppData\Local\Temp\e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2496
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description jmqyzgpy "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1548
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start jmqyzgpy
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2068
- 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:2628

C:\Windows\SysWOW64\jmqyzgpy\lyhefkwj.exe
C:\Windows\SysWOW64\jmqyzgpy\lyhefkwj.exe /d"C:\Users\Admin\AppData\Local\Temp\e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2584
- 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:1004

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\lyhefkwj.exe

Filesize
11.0MB

MD5
817fb1828a9219e4af4de8b700f7b1e8

SHA1
4c1c245f149ba8f9dafb4da90ceaa91a3462e27f

SHA256
0014453f664833a40616df209f04593c323fd95636a5578eb462db6042c5c7cd

SHA512
e55cc26ad421b50bcc831567aba569efd61456c6f0230f45934fc00b9919741c99e3fab222a8ce1135c338caf79da43feb9e75497e0852bc07833c923b745faf

Download Submit
memory/1004-10-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1004-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1004-13-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1004-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1004-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2584-16-0x0000000000400000-0x0000000002F05000-memory.dmp

Filesize
43.0MB

Download
memory/2720-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2720-1-0x00000000002E0000-0x00000000002F3000-memory.dmp

Filesize
76KB

Download
memory/2720-7-0x0000000000220000-0x000000000022D000-memory.dmp

Filesize
52KB

Download
memory/2720-8-0x00000000002E0000-0x00000000002F3000-memory.dmp

Filesize
76KB

Download
memory/2720-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2720-6-0x0000000000400000-0x0000000002F05000-memory.dmp

Filesize
43.0MB

Download
memory/2720-0-0x0000000000220000-0x000000000022D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads