tofsee | 9242bfe755391afaabf0437648bd1d1219bfe22a3a9cc38aa400b8e586207d8e

Analysis

max time kernel
144s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
21/09/2024, 23:28

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General

Target
2024092155677129c3ec9b078fca74e0042b7667mafia.exe
Size 12.0MB
Sample240921-3geskazfpg
SHA256 9242bfe755391afaabf0437648bd1d1219bfe22a3a9cc38aa400b8e586207d8e
MD5 55677129c3ec9b078fca74e0042b7667
SHA1 0f316608d3481f66b6be8defcee658022220bb61
SHA512 ce397f4fdc64387094fba86c9a10c487dbf66a88e15e0aaf19cc98eec28f8e8b3b7b0ec2a5816b39f1524609636457a5ab719dfb9affd2904eb317e0eb8d24fe
SSDEEP 6144:c+rWO2zeSPDjMXMH7Ll4aFpWVqIwUAP97GEwHrG2+e1x2:c+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
5092	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\lbhgskib\ImagePath = "C:\\Windows\\SysWOW64\\lbhgskib\\nzauplmj.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-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	2024092155677129c3ec9b078fca74e0042b7667mafia.exe

Deletes itself 1 IoCs

pid	Process
628	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1876	nzauplmj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1876 set thread context of 628	1876	nzauplmj.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
2044	sc.exe
4472	sc.exe
4596	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	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	nzauplmj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024092155677129c3ec9b078fca74e0042b7667mafia.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 23 IoCs

description	pid	Process	procid_target
PID 396 wrote to memory of 4852	396	2024092155677129c3ec9b078fca74e0042b7667mafia.exe	82
PID 396 wrote to memory of 4852	396	2024092155677129c3ec9b078fca74e0042b7667mafia.exe	82
PID 396 wrote to memory of 4852	396	2024092155677129c3ec9b078fca74e0042b7667mafia.exe	82
PID 396 wrote to memory of 1568	396	2024092155677129c3ec9b078fca74e0042b7667mafia.exe	84
PID 396 wrote to memory of 1568	396	2024092155677129c3ec9b078fca74e0042b7667mafia.exe	84
PID 396 wrote to memory of 1568	396	2024092155677129c3ec9b078fca74e0042b7667mafia.exe	84
PID 396 wrote to memory of 4472	396	2024092155677129c3ec9b078fca74e0042b7667mafia.exe	86
PID 396 wrote to memory of 4472	396	2024092155677129c3ec9b078fca74e0042b7667mafia.exe	86
PID 396 wrote to memory of 4472	396	2024092155677129c3ec9b078fca74e0042b7667mafia.exe	86
PID 396 wrote to memory of 4596	396	2024092155677129c3ec9b078fca74e0042b7667mafia.exe	88
PID 396 wrote to memory of 4596	396	2024092155677129c3ec9b078fca74e0042b7667mafia.exe	88
PID 396 wrote to memory of 4596	396	2024092155677129c3ec9b078fca74e0042b7667mafia.exe	88
PID 396 wrote to memory of 2044	396	2024092155677129c3ec9b078fca74e0042b7667mafia.exe	92
PID 396 wrote to memory of 2044	396	2024092155677129c3ec9b078fca74e0042b7667mafia.exe	92
PID 396 wrote to memory of 2044	396	2024092155677129c3ec9b078fca74e0042b7667mafia.exe	92
PID 396 wrote to memory of 5092	396	2024092155677129c3ec9b078fca74e0042b7667mafia.exe	95
PID 396 wrote to memory of 5092	396	2024092155677129c3ec9b078fca74e0042b7667mafia.exe	95
PID 396 wrote to memory of 5092	396	2024092155677129c3ec9b078fca74e0042b7667mafia.exe	95
PID 1876 wrote to memory of 628	1876	nzauplmj.exe	98
PID 1876 wrote to memory of 628	1876	nzauplmj.exe	98
PID 1876 wrote to memory of 628	1876	nzauplmj.exe	98
PID 1876 wrote to memory of 628	1876	nzauplmj.exe	98
PID 1876 wrote to memory of 628	1876	nzauplmj.exe	98

C:\Users\Admin\AppData\Local\Temp\2024092155677129c3ec9b078fca74e0042b7667mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024092155677129c3ec9b078fca74e0042b7667mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:396
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lbhgskib\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4852
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nzauplmj.exe" C:\Windows\SysWOW64\lbhgskib\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1568
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create lbhgskib binPath= "C:\Windows\SysWOW64\lbhgskib\nzauplmj.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024092155677129c3ec9b078fca74e0042b7667mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4472
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description lbhgskib "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4596
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start lbhgskib
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2044
- 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:5092

C:\Windows\SysWOW64\lbhgskib\nzauplmj.exe
C:\Windows\SysWOW64\lbhgskib\nzauplmj.exe /d"C:\Users\Admin\AppData\Local\Temp\2024092155677129c3ec9b078fca74e0042b7667mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1876
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:628

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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nzauplmj.exe

Path C:\Users\Admin\AppData\Local\Temp\nzauplmj.exe
Size 12.8MB
SHA256 a2cdd9011f31af99af192b0d41d5773cbaf4a9cf8564f90c3eba118ca10efc19
MD5 a2cc7ac53f2e4c15328ae7c71de6be5b
SHA1 3bb0962f8d8afd44f87196a0af4bad1212efae33
SHA512 a405a81ce7864f97fce0be60c79f18f0dd38225f0bad7bbbcfe08bc1271ac16f368e4a8b2e159760299ab0379cffe93e5fa72d83cf47604f0a3e16da8dba38c5
SSDEEP 6144:++rWO2zeSPDjMXMH7Ll4aFpWVqIwUAP97GEwHrG2+e1x2:++r1IeSXMXc7LlxWV4Ug97GZ+ej
MD5 SHA1 SHA512 SSDEEP

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memory/396-1-0x0000000000680000-0x0000000000780000-memory.dmp

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memory/396-2-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/396-6-0x0000000000400000-0x000000000051A000-memory.dmp

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memory/396-7-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/628-11-0x0000000000180000-0x0000000000195000-memory.dmp

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memory/628-13-0x0000000000180000-0x0000000000195000-memory.dmp

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memory/628-16-0x0000000000180000-0x0000000000195000-memory.dmp

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memory/1876-9-0x0000000000400000-0x000000000051A000-memory.dmp

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memory/1876-10-0x0000000000400000-0x000000000051A000-memory.dmp

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memory/1876-15-0x0000000000400000-0x000000000051A000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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