tofsee | 9242bfe755391afaabf0437648bd1d1219bfe22a3a9cc38aa400b8e586207d8e

General

Target

2024092155677129c3ec9b078fca74e0042b7667mafia.exe
Size

12.0MB
MD5

55677129c3ec9b078fca74e0042b7667
SHA1

0f316608d3481f66b6be8defcee658022220bb61
SHA256

9242bfe755391afaabf0437648bd1d1219bfe22a3a9cc38aa400b8e586207d8e
SHA512

ce397f4fdc64387094fba86c9a10c487dbf66a88e15e0aaf19cc98eec28f8e8b3b7b0ec2a5816b39f1524609636457a5ab719dfb9affd2904eb317e0eb8d24fe
SSDEEP

6144:c+rWO2zeSPDjMXMH7Ll4aFpWVqIwUAP97GEwHrG2+e1x2:c+r1IeSXMXc7LlxWV4Ug97GZ+ej

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

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

Processes:

netsh.exe

pid process

5092 netsh.exe

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

Processes:

svchost.exe

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

Processes:

2024092155677129c3ec9b078fca74e0042b7667mafia.exe

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

Processes:

svchost.exe

pid process

628 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

nzauplmj.exe

pid process

1876 nzauplmj.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

nzauplmj.exe

description pid process target process

PID 1876 set thread context of 628 1876 nzauplmj.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

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

pid	process
628	svchost.exe

pid	process
1876	nzauplmj.exe

description	pid	process	target process
PID 1876 set thread context of 628	1876	nzauplmj.exe	svchost.exe

pid	process
2044	sc.exe
4472	sc.exe
4596	sc.exe

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

Processes:

netsh.exe

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

Processes:

cmd.execmd.exesc.exesc.exenzauplmj.exe2024092155677129c3ec9b078fca74e0042b7667mafia.exesc.exenetsh.exesvchost.exe

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

Processes:

2024092155677129c3ec9b078fca74e0042b7667mafia.exenzauplmj.exe

description	pid	process	target process
PID 396 wrote to memory of 4852	396	2024092155677129c3ec9b078fca74e0042b7667mafia.exe	cmd.exe
PID 396 wrote to memory of 4852	396	2024092155677129c3ec9b078fca74e0042b7667mafia.exe	cmd.exe
PID 396 wrote to memory of 4852	396	2024092155677129c3ec9b078fca74e0042b7667mafia.exe	cmd.exe
PID 396 wrote to memory of 1568	396	2024092155677129c3ec9b078fca74e0042b7667mafia.exe	cmd.exe
PID 396 wrote to memory of 1568	396	2024092155677129c3ec9b078fca74e0042b7667mafia.exe	cmd.exe
PID 396 wrote to memory of 1568	396	2024092155677129c3ec9b078fca74e0042b7667mafia.exe	cmd.exe
PID 396 wrote to memory of 4472	396	2024092155677129c3ec9b078fca74e0042b7667mafia.exe	sc.exe
PID 396 wrote to memory of 4472	396	2024092155677129c3ec9b078fca74e0042b7667mafia.exe	sc.exe
PID 396 wrote to memory of 4472	396	2024092155677129c3ec9b078fca74e0042b7667mafia.exe	sc.exe
PID 396 wrote to memory of 4596	396	2024092155677129c3ec9b078fca74e0042b7667mafia.exe	sc.exe
PID 396 wrote to memory of 4596	396	2024092155677129c3ec9b078fca74e0042b7667mafia.exe	sc.exe
PID 396 wrote to memory of 4596	396	2024092155677129c3ec9b078fca74e0042b7667mafia.exe	sc.exe
PID 396 wrote to memory of 2044	396	2024092155677129c3ec9b078fca74e0042b7667mafia.exe	sc.exe
PID 396 wrote to memory of 2044	396	2024092155677129c3ec9b078fca74e0042b7667mafia.exe	sc.exe
PID 396 wrote to memory of 2044	396	2024092155677129c3ec9b078fca74e0042b7667mafia.exe	sc.exe
PID 396 wrote to memory of 5092	396	2024092155677129c3ec9b078fca74e0042b7667mafia.exe	netsh.exe
PID 396 wrote to memory of 5092	396	2024092155677129c3ec9b078fca74e0042b7667mafia.exe	netsh.exe
PID 396 wrote to memory of 5092	396	2024092155677129c3ec9b078fca74e0042b7667mafia.exe	netsh.exe
PID 1876 wrote to memory of 628	1876	nzauplmj.exe	svchost.exe
PID 1876 wrote to memory of 628	1876	nzauplmj.exe	svchost.exe
PID 1876 wrote to memory of 628	1876	nzauplmj.exe	svchost.exe
PID 1876 wrote to memory of 628	1876	nzauplmj.exe	svchost.exe
PID 1876 wrote to memory of 628	1876	nzauplmj.exe	svchost.exe

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

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
12.8MB

MD5
a2cc7ac53f2e4c15328ae7c71de6be5b

SHA1
3bb0962f8d8afd44f87196a0af4bad1212efae33

SHA256
a2cdd9011f31af99af192b0d41d5773cbaf4a9cf8564f90c3eba118ca10efc19

SHA512
a405a81ce7864f97fce0be60c79f18f0dd38225f0bad7bbbcfe08bc1271ac16f368e4a8b2e159760299ab0379cffe93e5fa72d83cf47604f0a3e16da8dba38c5

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

Filesize
1024KB

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

Filesize
84KB

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

Filesize
1.1MB

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

Filesize
84KB

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

Filesize
84KB

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

Filesize
84KB

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

Filesize
84KB

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

Filesize
1.1MB

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

Filesize
1.1MB

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

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads