tofsee | b292c25b82bf85d7627703ab0abfb2ca2a101bb947c05971e000f8b4b08ee919

Analysis

max time kernel
147s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
01-12-2024 17:53

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General

Target

2024-12-01_23e9979fbb7f84f4b5d0607fc2d2f028_karagany_mafia.exe
Size

14.1MB
MD5

23e9979fbb7f84f4b5d0607fc2d2f028
SHA1

79efaf5f89312c8fdd793ec0635c765da9f4fec6
SHA256

b292c25b82bf85d7627703ab0abfb2ca2a101bb947c05971e000f8b4b08ee919
SHA512

beee800d545f040159da76fbcc61837b4f0be48d7aba9559a268e0a6ec2854ca516b679efccb2d5fc12e8b0fec86d19730cf5cb8d7a8026d7e1895dc1d561450
SSDEEP

6144:lyXxZTquqxpXAdbbiFyKq3nUOcWfMMMMMMMbt:lyXzN8pXAdbbyyZtZfMMMMMMMb

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\yqfbqsns = "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
2796	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\yqfbqsns\ImagePath = "C:\\Windows\\SysWOW64\\yqfbqsns\\rnhntvne.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2568	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2664	rnhntvne.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2664 set thread context of 2568	2664	rnhntvne.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
1768	sc.exe
2056	sc.exe
2092	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rnhntvne.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-12-01_23e9979fbb7f84f4b5d0607fc2d2f028_karagany_mafia.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 3044 wrote to memory of 2388	3044	2024-12-01_23e9979fbb7f84f4b5d0607fc2d2f028_karagany_mafia.exe	30
PID 3044 wrote to memory of 2388	3044	2024-12-01_23e9979fbb7f84f4b5d0607fc2d2f028_karagany_mafia.exe	30
PID 3044 wrote to memory of 2388	3044	2024-12-01_23e9979fbb7f84f4b5d0607fc2d2f028_karagany_mafia.exe	30
PID 3044 wrote to memory of 2388	3044	2024-12-01_23e9979fbb7f84f4b5d0607fc2d2f028_karagany_mafia.exe	30
PID 3044 wrote to memory of 2472	3044	2024-12-01_23e9979fbb7f84f4b5d0607fc2d2f028_karagany_mafia.exe	32
PID 3044 wrote to memory of 2472	3044	2024-12-01_23e9979fbb7f84f4b5d0607fc2d2f028_karagany_mafia.exe	32
PID 3044 wrote to memory of 2472	3044	2024-12-01_23e9979fbb7f84f4b5d0607fc2d2f028_karagany_mafia.exe	32
PID 3044 wrote to memory of 2472	3044	2024-12-01_23e9979fbb7f84f4b5d0607fc2d2f028_karagany_mafia.exe	32
PID 3044 wrote to memory of 1768	3044	2024-12-01_23e9979fbb7f84f4b5d0607fc2d2f028_karagany_mafia.exe	34
PID 3044 wrote to memory of 1768	3044	2024-12-01_23e9979fbb7f84f4b5d0607fc2d2f028_karagany_mafia.exe	34
PID 3044 wrote to memory of 1768	3044	2024-12-01_23e9979fbb7f84f4b5d0607fc2d2f028_karagany_mafia.exe	34
PID 3044 wrote to memory of 1768	3044	2024-12-01_23e9979fbb7f84f4b5d0607fc2d2f028_karagany_mafia.exe	34
PID 3044 wrote to memory of 2056	3044	2024-12-01_23e9979fbb7f84f4b5d0607fc2d2f028_karagany_mafia.exe	36
PID 3044 wrote to memory of 2056	3044	2024-12-01_23e9979fbb7f84f4b5d0607fc2d2f028_karagany_mafia.exe	36
PID 3044 wrote to memory of 2056	3044	2024-12-01_23e9979fbb7f84f4b5d0607fc2d2f028_karagany_mafia.exe	36
PID 3044 wrote to memory of 2056	3044	2024-12-01_23e9979fbb7f84f4b5d0607fc2d2f028_karagany_mafia.exe	36
PID 3044 wrote to memory of 2092	3044	2024-12-01_23e9979fbb7f84f4b5d0607fc2d2f028_karagany_mafia.exe	38
PID 3044 wrote to memory of 2092	3044	2024-12-01_23e9979fbb7f84f4b5d0607fc2d2f028_karagany_mafia.exe	38
PID 3044 wrote to memory of 2092	3044	2024-12-01_23e9979fbb7f84f4b5d0607fc2d2f028_karagany_mafia.exe	38
PID 3044 wrote to memory of 2092	3044	2024-12-01_23e9979fbb7f84f4b5d0607fc2d2f028_karagany_mafia.exe	38
PID 3044 wrote to memory of 2796	3044	2024-12-01_23e9979fbb7f84f4b5d0607fc2d2f028_karagany_mafia.exe	41
PID 3044 wrote to memory of 2796	3044	2024-12-01_23e9979fbb7f84f4b5d0607fc2d2f028_karagany_mafia.exe	41
PID 3044 wrote to memory of 2796	3044	2024-12-01_23e9979fbb7f84f4b5d0607fc2d2f028_karagany_mafia.exe	41
PID 3044 wrote to memory of 2796	3044	2024-12-01_23e9979fbb7f84f4b5d0607fc2d2f028_karagany_mafia.exe	41
PID 2664 wrote to memory of 2568	2664	rnhntvne.exe	44
PID 2664 wrote to memory of 2568	2664	rnhntvne.exe	44
PID 2664 wrote to memory of 2568	2664	rnhntvne.exe	44
PID 2664 wrote to memory of 2568	2664	rnhntvne.exe	44
PID 2664 wrote to memory of 2568	2664	rnhntvne.exe	44
PID 2664 wrote to memory of 2568	2664	rnhntvne.exe	44

C:\Users\Admin\AppData\Local\Temp\2024-12-01_23e9979fbb7f84f4b5d0607fc2d2f028_karagany_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-01_23e9979fbb7f84f4b5d0607fc2d2f028_karagany_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3044
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yqfbqsns\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2388
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rnhntvne.exe" C:\Windows\SysWOW64\yqfbqsns\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2472
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create yqfbqsns binPath= "C:\Windows\SysWOW64\yqfbqsns\rnhntvne.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-12-01_23e9979fbb7f84f4b5d0607fc2d2f028_karagany_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1768
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description yqfbqsns "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2056
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start yqfbqsns
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2092
- 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:2796

C:\Windows\SysWOW64\yqfbqsns\rnhntvne.exe
C:\Windows\SysWOW64\yqfbqsns\rnhntvne.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-12-01_23e9979fbb7f84f4b5d0607fc2d2f028_karagany_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2664
- 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:2568

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\rnhntvne.exe

Filesize
14.7MB

MD5
038123b7245ecccf919e54dbcc8b2eb5

SHA1
d448f18ce82c2ebbbccc686196e46d5caccaaedb

SHA256
8b2acf3ad493cce23e60b317d0c31128071a77c083747fe73355cb0626577092

SHA512
0b3788a6d79867448467a5c996c310d03f2000e32e8e8920e10b5d2b4629b7712d39f7f4c6efe1d7c32b04726e779014c71f208f63b0619995c37ca0f7341d5d

Download Submit
memory/2568-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2568-13-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2568-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2568-10-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2568-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2664-16-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/3044-1-0x0000000000590000-0x0000000000690000-memory.dmp

Filesize
1024KB

Download
memory/3044-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3044-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/3044-7-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/3044-8-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads