tofsee | cc83632ac03fe792612d1925a97d4756d4b591144d9e0f581669785341640446

Analysis

max time kernel
149s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
28-11-2024 12:18

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General

Target

2024-11-28_f9175002a66d43566c7918c00468dfee_karagany_mafia.exe
Size

12.6MB
MD5

f9175002a66d43566c7918c00468dfee
SHA1

fde81262c4b4b8105ec0b0e6c245152fdcaf1079
SHA256

cc83632ac03fe792612d1925a97d4756d4b591144d9e0f581669785341640446
SHA512

7a6a9e43e3f7cf0c78c0fa2bb14d7d987be368952a8f66526fcdbaf8bd4c5ac2f9ca92ae0efab99806dc5a4a596b33125f4bbccdce5f229a0701b96e8c87ced6
SSDEEP

6144:FyXxZTquqxpXAdbbiFyKq3nUOcWfMMMMMMMbt:FyXzN8pXAdbbyyZtZfMMMMMMMb

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

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\slzsycch = "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
1728	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\slzsycch\ImagePath = "C:\\Windows\\SysWOW64\\slzsycch\\yavmdxex.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2944	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2644	yavmdxex.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2644 set thread context of 2944	2644	yavmdxex.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
2536	sc.exe
2572	sc.exe
2600	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	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-11-28_f9175002a66d43566c7918c00468dfee_karagany_mafia.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	yavmdxex.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1544 wrote to memory of 3040	1544	2024-11-28_f9175002a66d43566c7918c00468dfee_karagany_mafia.exe	29
PID 1544 wrote to memory of 3040	1544	2024-11-28_f9175002a66d43566c7918c00468dfee_karagany_mafia.exe	29
PID 1544 wrote to memory of 3040	1544	2024-11-28_f9175002a66d43566c7918c00468dfee_karagany_mafia.exe	29
PID 1544 wrote to memory of 3040	1544	2024-11-28_f9175002a66d43566c7918c00468dfee_karagany_mafia.exe	29
PID 1544 wrote to memory of 2656	1544	2024-11-28_f9175002a66d43566c7918c00468dfee_karagany_mafia.exe	31
PID 1544 wrote to memory of 2656	1544	2024-11-28_f9175002a66d43566c7918c00468dfee_karagany_mafia.exe	31
PID 1544 wrote to memory of 2656	1544	2024-11-28_f9175002a66d43566c7918c00468dfee_karagany_mafia.exe	31
PID 1544 wrote to memory of 2656	1544	2024-11-28_f9175002a66d43566c7918c00468dfee_karagany_mafia.exe	31
PID 1544 wrote to memory of 2536	1544	2024-11-28_f9175002a66d43566c7918c00468dfee_karagany_mafia.exe	33
PID 1544 wrote to memory of 2536	1544	2024-11-28_f9175002a66d43566c7918c00468dfee_karagany_mafia.exe	33
PID 1544 wrote to memory of 2536	1544	2024-11-28_f9175002a66d43566c7918c00468dfee_karagany_mafia.exe	33
PID 1544 wrote to memory of 2536	1544	2024-11-28_f9175002a66d43566c7918c00468dfee_karagany_mafia.exe	33
PID 1544 wrote to memory of 2572	1544	2024-11-28_f9175002a66d43566c7918c00468dfee_karagany_mafia.exe	35
PID 1544 wrote to memory of 2572	1544	2024-11-28_f9175002a66d43566c7918c00468dfee_karagany_mafia.exe	35
PID 1544 wrote to memory of 2572	1544	2024-11-28_f9175002a66d43566c7918c00468dfee_karagany_mafia.exe	35
PID 1544 wrote to memory of 2572	1544	2024-11-28_f9175002a66d43566c7918c00468dfee_karagany_mafia.exe	35
PID 1544 wrote to memory of 2600	1544	2024-11-28_f9175002a66d43566c7918c00468dfee_karagany_mafia.exe	37
PID 1544 wrote to memory of 2600	1544	2024-11-28_f9175002a66d43566c7918c00468dfee_karagany_mafia.exe	37
PID 1544 wrote to memory of 2600	1544	2024-11-28_f9175002a66d43566c7918c00468dfee_karagany_mafia.exe	37
PID 1544 wrote to memory of 2600	1544	2024-11-28_f9175002a66d43566c7918c00468dfee_karagany_mafia.exe	37
PID 1544 wrote to memory of 1728	1544	2024-11-28_f9175002a66d43566c7918c00468dfee_karagany_mafia.exe	40
PID 1544 wrote to memory of 1728	1544	2024-11-28_f9175002a66d43566c7918c00468dfee_karagany_mafia.exe	40
PID 1544 wrote to memory of 1728	1544	2024-11-28_f9175002a66d43566c7918c00468dfee_karagany_mafia.exe	40
PID 1544 wrote to memory of 1728	1544	2024-11-28_f9175002a66d43566c7918c00468dfee_karagany_mafia.exe	40
PID 2644 wrote to memory of 2944	2644	yavmdxex.exe	42
PID 2644 wrote to memory of 2944	2644	yavmdxex.exe	42
PID 2644 wrote to memory of 2944	2644	yavmdxex.exe	42
PID 2644 wrote to memory of 2944	2644	yavmdxex.exe	42
PID 2644 wrote to memory of 2944	2644	yavmdxex.exe	42
PID 2644 wrote to memory of 2944	2644	yavmdxex.exe	42

C:\Users\Admin\AppData\Local\Temp\2024-11-28_f9175002a66d43566c7918c00468dfee_karagany_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-28_f9175002a66d43566c7918c00468dfee_karagany_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1544
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\slzsycch\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3040
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\yavmdxex.exe" C:\Windows\SysWOW64\slzsycch\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2656
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create slzsycch binPath= "C:\Windows\SysWOW64\slzsycch\yavmdxex.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-11-28_f9175002a66d43566c7918c00468dfee_karagany_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2536
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description slzsycch "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2572
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start slzsycch
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2600
- 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:1728

C:\Windows\SysWOW64\slzsycch\yavmdxex.exe
C:\Windows\SysWOW64\slzsycch\yavmdxex.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-11-28_f9175002a66d43566c7918c00468dfee_karagany_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2644
- 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:2944

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\yavmdxex.exe

Filesize
11.4MB

MD5
1de6f2c237f370baaba1c08e295d74aa

SHA1
73930a43969f8cf87b393e266c749cfcfda601ef

SHA256
ae7654d916d877a640f0b3b4f134ac441e898b945e7c30783ce5ce0b44ca9d4b

SHA512
6fbc800e81b0624fec62ca90a283d20d9ec4e5ef1bf05d89b9eb9dc79d2327aa91884fd0255f6e3909da52efa2d0c1401e4df015a56e84397357594e8f5dec02

Download Submit
memory/1544-8-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/1544-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1544-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/1544-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1544-9-0x0000000000560000-0x0000000000660000-memory.dmp

Filesize
1024KB

Download
memory/1544-1-0x0000000000560000-0x0000000000660000-memory.dmp

Filesize
1024KB

Download
memory/1544-7-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/2644-18-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/2944-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2944-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2944-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2944-12-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2944-19-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads