tofsee | d964d79c457a25804009d5d23d8a4552b08baefb122eeb64a2514e169f7eadfa

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240910-en
resource tags

arch:x64arch:x86image:win10v2004-20240910-enlocale:en-usos:windows10-2004-x64system
submitted
24/09/2024, 17:17

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General

Target
202409242fed4f867f1b3b5a3f1fe632c09160f0mafia.exe
Size 14.8MB
Sample240924-vtp53aycke
SHA256 d964d79c457a25804009d5d23d8a4552b08baefb122eeb64a2514e169f7eadfa
MD5 2fed4f867f1b3b5a3f1fe632c09160f0
SHA1 b5209a5cfc4f2ebe1a39041675c7d985fc4dbbea
SHA512 74809b8a70806be6df304181ce9dd3762203cfcc7eb34d13d4a9fae334f860d887184eabab4343ecfbf738c18ea4a409c7c148b398b15b9985a5db8abef01b7c
SSDEEP 6144:7+rWO2zeSPDjMXMH7Ll4aFpWVqIwUAP97GEwHrG2+e1x2:7+r1IeSXMXc7LlxWV4Ug97GZ+ej
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

43.231.4.7
lazystax.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
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
4308	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\fuikrbuz\ImagePath = "C:\\Windows\\SysWOW64\\fuikrbuz\\ulehobnm.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2629364133-3182087385-364449604-1000\Control Panel\International\Geo\Nation	202409242fed4f867f1b3b5a3f1fe632c09160f0mafia.exe

Deletes itself 1 IoCs

pid	Process
4700	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4504	ulehobnm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4504 set thread context of 4700	4504	ulehobnm.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
2192	sc.exe
4472	sc.exe
2960	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	202409242fed4f867f1b3b5a3f1fe632c09160f0mafia.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ulehobnm.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1000 wrote to memory of 2740	1000	202409242fed4f867f1b3b5a3f1fe632c09160f0mafia.exe	87
PID 1000 wrote to memory of 2740	1000	202409242fed4f867f1b3b5a3f1fe632c09160f0mafia.exe	87
PID 1000 wrote to memory of 2740	1000	202409242fed4f867f1b3b5a3f1fe632c09160f0mafia.exe	87
PID 1000 wrote to memory of 3368	1000	202409242fed4f867f1b3b5a3f1fe632c09160f0mafia.exe	89
PID 1000 wrote to memory of 3368	1000	202409242fed4f867f1b3b5a3f1fe632c09160f0mafia.exe	89
PID 1000 wrote to memory of 3368	1000	202409242fed4f867f1b3b5a3f1fe632c09160f0mafia.exe	89
PID 1000 wrote to memory of 2192	1000	202409242fed4f867f1b3b5a3f1fe632c09160f0mafia.exe	91
PID 1000 wrote to memory of 2192	1000	202409242fed4f867f1b3b5a3f1fe632c09160f0mafia.exe	91
PID 1000 wrote to memory of 2192	1000	202409242fed4f867f1b3b5a3f1fe632c09160f0mafia.exe	91
PID 1000 wrote to memory of 4472	1000	202409242fed4f867f1b3b5a3f1fe632c09160f0mafia.exe	93
PID 1000 wrote to memory of 4472	1000	202409242fed4f867f1b3b5a3f1fe632c09160f0mafia.exe	93
PID 1000 wrote to memory of 4472	1000	202409242fed4f867f1b3b5a3f1fe632c09160f0mafia.exe	93
PID 1000 wrote to memory of 2960	1000	202409242fed4f867f1b3b5a3f1fe632c09160f0mafia.exe	97
PID 1000 wrote to memory of 2960	1000	202409242fed4f867f1b3b5a3f1fe632c09160f0mafia.exe	97
PID 1000 wrote to memory of 2960	1000	202409242fed4f867f1b3b5a3f1fe632c09160f0mafia.exe	97
PID 1000 wrote to memory of 4308	1000	202409242fed4f867f1b3b5a3f1fe632c09160f0mafia.exe	100
PID 1000 wrote to memory of 4308	1000	202409242fed4f867f1b3b5a3f1fe632c09160f0mafia.exe	100
PID 1000 wrote to memory of 4308	1000	202409242fed4f867f1b3b5a3f1fe632c09160f0mafia.exe	100
PID 4504 wrote to memory of 4700	4504	ulehobnm.exe	103
PID 4504 wrote to memory of 4700	4504	ulehobnm.exe	103
PID 4504 wrote to memory of 4700	4504	ulehobnm.exe	103
PID 4504 wrote to memory of 4700	4504	ulehobnm.exe	103
PID 4504 wrote to memory of 4700	4504	ulehobnm.exe	103

C:\Users\Admin\AppData\Local\Temp\202409242fed4f867f1b3b5a3f1fe632c09160f0mafia.exe
"C:\Users\Admin\AppData\Local\Temp\202409242fed4f867f1b3b5a3f1fe632c09160f0mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1000
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fuikrbuz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2740
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ulehobnm.exe" C:\Windows\SysWOW64\fuikrbuz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3368
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fuikrbuz binPath= "C:\Windows\SysWOW64\fuikrbuz\ulehobnm.exe /d\"C:\Users\Admin\AppData\Local\Temp\202409242fed4f867f1b3b5a3f1fe632c09160f0mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2192
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fuikrbuz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4472
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fuikrbuz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2960
- 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:4308

C:\Windows\SysWOW64\fuikrbuz\ulehobnm.exe
C:\Windows\SysWOW64\fuikrbuz\ulehobnm.exe /d"C:\Users\Admin\AppData\Local\Temp\202409242fed4f867f1b3b5a3f1fe632c09160f0mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4504
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4700

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

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

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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ulehobnm.exe

Path C:\Users\Admin\AppData\Local\Temp\ulehobnm.exe
Size 10.9MB
SHA256 a3c2b432d36ec0b0263efd82d4b97c00c5703e2ff9b9204a9b41dcf145b07b2a
MD5 65cf0e98f14ad14a81e68a2f7deafded
SHA1 60990557f63a70c695bbbf7bf67f95044ad13a1f
SHA512 549f1ae555227f45a4e7ca654b3968641d176141f3366eabcdaf0086ec472a7eb28dad078508ba5dc5fab67e65fb26c5683e540b9654ac718ad6fcad3a47bede
SSDEEP 6144:J+rWO2zeSPDjMXMH7Ll4aFpWVqIwUAP97GEwHrG2+e1x2:J+r1IeSXMXc7LlxWV4Ug97GZ+ej
MD5 SHA1 SHA512 SSDEEP

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memory/1000-1-0x00000000005F0000-0x00000000006F0000-memory.dmp

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memory/1000-2-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/1000-7-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/1000-6-0x0000000000400000-0x000000000051A000-memory.dmp

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memory/4504-9-0x0000000000400000-0x000000000051A000-memory.dmp

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memory/4504-10-0x0000000000400000-0x000000000051A000-memory.dmp

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memory/4504-14-0x0000000000400000-0x000000000051A000-memory.dmp

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memory/4700-11-0x00000000001E0000-0x00000000001F5000-memory.dmp

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memory/4700-15-0x00000000001E0000-0x00000000001F5000-memory.dmp

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memory/4700-16-0x00000000001E0000-0x00000000001F5000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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