tofsee | 24ef2a9b7b906129acc102cf2831fbeb17be433096e35962bfcface7aae0e7d9

Analysis

max time kernel
141s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
28-11-2024 14:58

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-11-28_ec0a775053011547d1f706ba20161f62_karagany_mafia.exe
Size

11.6MB
MD5

ec0a775053011547d1f706ba20161f62
SHA1

03cbdcdcce6d9dd80b0436e41df13c9eb3cdafd5
SHA256

24ef2a9b7b906129acc102cf2831fbeb17be433096e35962bfcface7aae0e7d9
SHA512

9253eb19eaae728aa1e240252e73cf95beced8828fefa1da01f37a9918ccdbce8d5eb027d934d5c2e8f9959326376b4050beafd702b6bd44df5721f47bd05d6c
SSDEEP

6144:NXxZs2EcxJ8GD96ySzTVaFRFX53ncNnUUMMMMMMMMb5:NXzuKJ8GD96ySzTcANnQMMMMMMMb

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
Tofsee family
tofsee

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\gxesbdmy = "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

Processes:

netsh.exe

pid	Process
2732	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\gxesbdmy\ImagePath = "C:\\Windows\\SysWOW64\\gxesbdmy\\nlsonwul.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid	Process
2820	svchost.exe

Executes dropped EXE 1 IoCs

Processes:

nlsonwul.exe

pid	Process
2268	nlsonwul.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

nlsonwul.exe

description	pid	Process	procid_target
PID 2268 set thread context of 2820	2268	nlsonwul.exe	43

Launches sc.exe 3 IoCs

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

Processes:

sc.exesc.exesc.exe

pid	Process
2932	sc.exe
2296	sc.exe
2864	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

Processes:

netsh.exe

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

Processes:

nlsonwul.exesvchost.exesc.exesc.exenetsh.exesc.exe2024-11-28_ec0a775053011547d1f706ba20161f62_karagany_mafia.execmd.execmd.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nlsonwul.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-11-28_ec0a775053011547d1f706ba20161f62_karagany_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

2024-11-28_ec0a775053011547d1f706ba20161f62_karagany_mafia.exenlsonwul.exe

description	pid	Process	procid_target
PID 2332 wrote to memory of 2316	2332	2024-11-28_ec0a775053011547d1f706ba20161f62_karagany_mafia.exe	30
PID 2332 wrote to memory of 2316	2332	2024-11-28_ec0a775053011547d1f706ba20161f62_karagany_mafia.exe	30
PID 2332 wrote to memory of 2316	2332	2024-11-28_ec0a775053011547d1f706ba20161f62_karagany_mafia.exe	30
PID 2332 wrote to memory of 2316	2332	2024-11-28_ec0a775053011547d1f706ba20161f62_karagany_mafia.exe	30
PID 2332 wrote to memory of 1992	2332	2024-11-28_ec0a775053011547d1f706ba20161f62_karagany_mafia.exe	32
PID 2332 wrote to memory of 1992	2332	2024-11-28_ec0a775053011547d1f706ba20161f62_karagany_mafia.exe	32
PID 2332 wrote to memory of 1992	2332	2024-11-28_ec0a775053011547d1f706ba20161f62_karagany_mafia.exe	32
PID 2332 wrote to memory of 1992	2332	2024-11-28_ec0a775053011547d1f706ba20161f62_karagany_mafia.exe	32
PID 2332 wrote to memory of 2932	2332	2024-11-28_ec0a775053011547d1f706ba20161f62_karagany_mafia.exe	34
PID 2332 wrote to memory of 2932	2332	2024-11-28_ec0a775053011547d1f706ba20161f62_karagany_mafia.exe	34
PID 2332 wrote to memory of 2932	2332	2024-11-28_ec0a775053011547d1f706ba20161f62_karagany_mafia.exe	34
PID 2332 wrote to memory of 2932	2332	2024-11-28_ec0a775053011547d1f706ba20161f62_karagany_mafia.exe	34
PID 2332 wrote to memory of 2296	2332	2024-11-28_ec0a775053011547d1f706ba20161f62_karagany_mafia.exe	36
PID 2332 wrote to memory of 2296	2332	2024-11-28_ec0a775053011547d1f706ba20161f62_karagany_mafia.exe	36
PID 2332 wrote to memory of 2296	2332	2024-11-28_ec0a775053011547d1f706ba20161f62_karagany_mafia.exe	36
PID 2332 wrote to memory of 2296	2332	2024-11-28_ec0a775053011547d1f706ba20161f62_karagany_mafia.exe	36
PID 2332 wrote to memory of 2864	2332	2024-11-28_ec0a775053011547d1f706ba20161f62_karagany_mafia.exe	38
PID 2332 wrote to memory of 2864	2332	2024-11-28_ec0a775053011547d1f706ba20161f62_karagany_mafia.exe	38
PID 2332 wrote to memory of 2864	2332	2024-11-28_ec0a775053011547d1f706ba20161f62_karagany_mafia.exe	38
PID 2332 wrote to memory of 2864	2332	2024-11-28_ec0a775053011547d1f706ba20161f62_karagany_mafia.exe	38
PID 2332 wrote to memory of 2732	2332	2024-11-28_ec0a775053011547d1f706ba20161f62_karagany_mafia.exe	41
PID 2332 wrote to memory of 2732	2332	2024-11-28_ec0a775053011547d1f706ba20161f62_karagany_mafia.exe	41
PID 2332 wrote to memory of 2732	2332	2024-11-28_ec0a775053011547d1f706ba20161f62_karagany_mafia.exe	41
PID 2332 wrote to memory of 2732	2332	2024-11-28_ec0a775053011547d1f706ba20161f62_karagany_mafia.exe	41
PID 2268 wrote to memory of 2820	2268	nlsonwul.exe	43
PID 2268 wrote to memory of 2820	2268	nlsonwul.exe	43
PID 2268 wrote to memory of 2820	2268	nlsonwul.exe	43
PID 2268 wrote to memory of 2820	2268	nlsonwul.exe	43
PID 2268 wrote to memory of 2820	2268	nlsonwul.exe	43
PID 2268 wrote to memory of 2820	2268	nlsonwul.exe	43

C:\Users\Admin\AppData\Local\Temp\2024-11-28_ec0a775053011547d1f706ba20161f62_karagany_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-28_ec0a775053011547d1f706ba20161f62_karagany_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2332
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gxesbdmy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2316
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nlsonwul.exe" C:\Windows\SysWOW64\gxesbdmy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1992
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create gxesbdmy binPath= "C:\Windows\SysWOW64\gxesbdmy\nlsonwul.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-11-28_ec0a775053011547d1f706ba20161f62_karagany_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2932
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description gxesbdmy "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2296
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start gxesbdmy
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2864
- 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:2732

C:\Windows\SysWOW64\gxesbdmy\nlsonwul.exe
C:\Windows\SysWOW64\gxesbdmy\nlsonwul.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-11-28_ec0a775053011547d1f706ba20161f62_karagany_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2268
- 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:2820

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
11.8MB

MD5
46dee0f20c60efd51c1c0433187600ac

SHA1
4f74aa1906cca304f0161804e3f3a247d0ce6cab

SHA256
dbb5cd18a03ae8ebd7723dd7fa3874e17dfc1f43a42aef4def0ceacc6eb2e174

SHA512
92d9badde8f5d0224c27063e96f4b6eb7ceb6616312ccd50cb60fa15ba051e1c8848e9046f16fa690ec6e9c73864a7124a2921f8b8f4383b24b18179f585e0f5

Download Submit
memory/2268-17-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2332-7-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2332-1-0x0000000000560000-0x0000000000660000-memory.dmp

Filesize
1024KB

Download
memory/2332-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2332-8-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2332-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2332-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2820-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2820-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2820-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2820-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2820-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download