tofsee | b744be865b905f904a65c905d5d98dfa695052dd24046deb6f929ebe23f65e94

Analysis

max time kernel
113s
max time network
116s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
19-08-2024 10:41

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General

Target

e2f0b0cdbf6a708485ba8eec9b077310N.exe
Size

72KB
MD5

e2f0b0cdbf6a708485ba8eec9b077310
SHA1

a7cac54cf95a2f2fe29da0133a28a33c1cc9916a
SHA256

b744be865b905f904a65c905d5d98dfa695052dd24046deb6f929ebe23f65e94
SHA512

6a479af02a021b45b256bb901527b8ce108c2297f1d9939566cd9da7ce27fe67ba2c161dc9dc6cbad6a3fc097735438ccc72d1e7607d0bfde3a691f30cd1849c
SSDEEP

1536:TQzRMNmVCzUgZTOSnoFLSlR2DZVIsogQ4dytA11rpIl:MWmVCzUgVOuoglsbngAbrpI

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

103.248.137.133

59.188.74.26

115.230.124.76

111.121.193.242

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

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\lpabtwuz = "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
2784	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\lpabtwuz\ImagePath = "C:\\Windows\\SysWOW64\\lpabtwuz\\zrokirxt.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2508	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
960	zrokirxt.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 960 set thread context of 2508	960	zrokirxt.exe	40

Launches sc.exe 3 IoCs

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

pid	Process
2252	sc.exe
2792	sc.exe
2656	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	e2f0b0cdbf6a708485ba8eec9b077310N.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	zrokirxt.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	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1820 wrote to memory of 2344	1820	e2f0b0cdbf6a708485ba8eec9b077310N.exe	29
PID 1820 wrote to memory of 2344	1820	e2f0b0cdbf6a708485ba8eec9b077310N.exe	29
PID 1820 wrote to memory of 2344	1820	e2f0b0cdbf6a708485ba8eec9b077310N.exe	29
PID 1820 wrote to memory of 2344	1820	e2f0b0cdbf6a708485ba8eec9b077310N.exe	29
PID 1820 wrote to memory of 2060	1820	e2f0b0cdbf6a708485ba8eec9b077310N.exe	31
PID 1820 wrote to memory of 2060	1820	e2f0b0cdbf6a708485ba8eec9b077310N.exe	31
PID 1820 wrote to memory of 2060	1820	e2f0b0cdbf6a708485ba8eec9b077310N.exe	31
PID 1820 wrote to memory of 2060	1820	e2f0b0cdbf6a708485ba8eec9b077310N.exe	31
PID 1820 wrote to memory of 2252	1820	e2f0b0cdbf6a708485ba8eec9b077310N.exe	33
PID 1820 wrote to memory of 2252	1820	e2f0b0cdbf6a708485ba8eec9b077310N.exe	33
PID 1820 wrote to memory of 2252	1820	e2f0b0cdbf6a708485ba8eec9b077310N.exe	33
PID 1820 wrote to memory of 2252	1820	e2f0b0cdbf6a708485ba8eec9b077310N.exe	33
PID 1820 wrote to memory of 2792	1820	e2f0b0cdbf6a708485ba8eec9b077310N.exe	35
PID 1820 wrote to memory of 2792	1820	e2f0b0cdbf6a708485ba8eec9b077310N.exe	35
PID 1820 wrote to memory of 2792	1820	e2f0b0cdbf6a708485ba8eec9b077310N.exe	35
PID 1820 wrote to memory of 2792	1820	e2f0b0cdbf6a708485ba8eec9b077310N.exe	35
PID 1820 wrote to memory of 2656	1820	e2f0b0cdbf6a708485ba8eec9b077310N.exe	37
PID 1820 wrote to memory of 2656	1820	e2f0b0cdbf6a708485ba8eec9b077310N.exe	37
PID 1820 wrote to memory of 2656	1820	e2f0b0cdbf6a708485ba8eec9b077310N.exe	37
PID 1820 wrote to memory of 2656	1820	e2f0b0cdbf6a708485ba8eec9b077310N.exe	37
PID 960 wrote to memory of 2508	960	zrokirxt.exe	40
PID 960 wrote to memory of 2508	960	zrokirxt.exe	40
PID 960 wrote to memory of 2508	960	zrokirxt.exe	40
PID 960 wrote to memory of 2508	960	zrokirxt.exe	40
PID 960 wrote to memory of 2508	960	zrokirxt.exe	40
PID 960 wrote to memory of 2508	960	zrokirxt.exe	40
PID 1820 wrote to memory of 2784	1820	e2f0b0cdbf6a708485ba8eec9b077310N.exe	41
PID 1820 wrote to memory of 2784	1820	e2f0b0cdbf6a708485ba8eec9b077310N.exe	41
PID 1820 wrote to memory of 2784	1820	e2f0b0cdbf6a708485ba8eec9b077310N.exe	41
PID 1820 wrote to memory of 2784	1820	e2f0b0cdbf6a708485ba8eec9b077310N.exe	41

C:\Users\Admin\AppData\Local\Temp\e2f0b0cdbf6a708485ba8eec9b077310N.exe
"C:\Users\Admin\AppData\Local\Temp\e2f0b0cdbf6a708485ba8eec9b077310N.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1820
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lpabtwuz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2344
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zrokirxt.exe" C:\Windows\SysWOW64\lpabtwuz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2060
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create lpabtwuz binPath= "C:\Windows\SysWOW64\lpabtwuz\zrokirxt.exe /d\"C:\Users\Admin\AppData\Local\Temp\e2f0b0cdbf6a708485ba8eec9b077310N.exe\"" type= own start= auto DisplayName= "P2P Support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2252
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description lpabtwuz "Internet Mobile Support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2792
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start lpabtwuz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2656
- 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:2784

C:\Windows\SysWOW64\lpabtwuz\zrokirxt.exe
C:\Windows\SysWOW64\lpabtwuz\zrokirxt.exe /d"C:\Users\Admin\AppData\Local\Temp\e2f0b0cdbf6a708485ba8eec9b077310N.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:960
- 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:2508

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\zrokirxt.exe

Filesize
11.4MB

MD5
702b29c293318f73e21798839725b559

SHA1
9d85df36b96fa77caefcd69cf2949b952eddcec9

SHA256
740a71e167794add78e09e7f7271293f234c9570136351a0bd7125157a42249b

SHA512
6932657aad175c94415f384c321f5fa808360f539df394cf420b91de6896d6219f96c8f72ec9739af5ad383b8131f4e6367d71c4eaf7b42845b9c301b825ec05

Download Submit
memory/2508-6-0x0000000000080000-0x0000000000096000-memory.dmp

Filesize
88KB

Download
memory/2508-5-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2508-3-0x0000000000080000-0x0000000000096000-memory.dmp

Filesize
88KB

Download
memory/2508-8-0x0000000000080000-0x0000000000096000-memory.dmp

Filesize
88KB

Download
memory/2508-9-0x0000000000080000-0x0000000000096000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads