tofsee | 38e91b481571df6513b3f932c2f51bda07d4a0c35c45e690e3643ee98c3b47db

Analysis

max time kernel
149s
max time network
124s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
20-11-2024 18:49

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General

Target

2024-11-20_6c97afac7078c36833ebcfbcf96fad8e_karagany_mafia.exe
Size

13.9MB
MD5

6c97afac7078c36833ebcfbcf96fad8e
SHA1

233ec0aab053ccc77ec31026dd8d0f4223ca61b9
SHA256

38e91b481571df6513b3f932c2f51bda07d4a0c35c45e690e3643ee98c3b47db
SHA512

181baf50cc579b52301b71ac22ba06c0e242a592fcdab6c5bfc491186060c7ef579ed69df2c3c5a9b89fe471a288a367bf2ce5391e46de3f62f024046f8354e1
SSDEEP

6144:UXxZs2EcxJ8GD96ySzTVaFRFX53ncNnUUMMMMMMMMb5:UXzuKJ8GD96ySzTcANnQMMMMMMMb

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\lbwkrtb = "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
2760	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\lbwkrtb\ImagePath = "C:\\Windows\\SysWOW64\\lbwkrtb\\cysyegyp.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2632	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2840	cysyegyp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2840 set thread context of 2632	2840	cysyegyp.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2264	sc.exe
1444	sc.exe
2812	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cysyegyp.exe
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	2024-11-20_6c97afac7078c36833ebcfbcf96fad8e_karagany_mafia.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 30 IoCs

description	pid	Process	procid_target
PID 2144 wrote to memory of 3004	2144	2024-11-20_6c97afac7078c36833ebcfbcf96fad8e_karagany_mafia.exe	31
PID 2144 wrote to memory of 3004	2144	2024-11-20_6c97afac7078c36833ebcfbcf96fad8e_karagany_mafia.exe	31
PID 2144 wrote to memory of 3004	2144	2024-11-20_6c97afac7078c36833ebcfbcf96fad8e_karagany_mafia.exe	31
PID 2144 wrote to memory of 3004	2144	2024-11-20_6c97afac7078c36833ebcfbcf96fad8e_karagany_mafia.exe	31
PID 2144 wrote to memory of 3068	2144	2024-11-20_6c97afac7078c36833ebcfbcf96fad8e_karagany_mafia.exe	33
PID 2144 wrote to memory of 3068	2144	2024-11-20_6c97afac7078c36833ebcfbcf96fad8e_karagany_mafia.exe	33
PID 2144 wrote to memory of 3068	2144	2024-11-20_6c97afac7078c36833ebcfbcf96fad8e_karagany_mafia.exe	33
PID 2144 wrote to memory of 3068	2144	2024-11-20_6c97afac7078c36833ebcfbcf96fad8e_karagany_mafia.exe	33
PID 2144 wrote to memory of 2264	2144	2024-11-20_6c97afac7078c36833ebcfbcf96fad8e_karagany_mafia.exe	35
PID 2144 wrote to memory of 2264	2144	2024-11-20_6c97afac7078c36833ebcfbcf96fad8e_karagany_mafia.exe	35
PID 2144 wrote to memory of 2264	2144	2024-11-20_6c97afac7078c36833ebcfbcf96fad8e_karagany_mafia.exe	35
PID 2144 wrote to memory of 2264	2144	2024-11-20_6c97afac7078c36833ebcfbcf96fad8e_karagany_mafia.exe	35
PID 2144 wrote to memory of 1444	2144	2024-11-20_6c97afac7078c36833ebcfbcf96fad8e_karagany_mafia.exe	37
PID 2144 wrote to memory of 1444	2144	2024-11-20_6c97afac7078c36833ebcfbcf96fad8e_karagany_mafia.exe	37
PID 2144 wrote to memory of 1444	2144	2024-11-20_6c97afac7078c36833ebcfbcf96fad8e_karagany_mafia.exe	37
PID 2144 wrote to memory of 1444	2144	2024-11-20_6c97afac7078c36833ebcfbcf96fad8e_karagany_mafia.exe	37
PID 2144 wrote to memory of 2812	2144	2024-11-20_6c97afac7078c36833ebcfbcf96fad8e_karagany_mafia.exe	39
PID 2144 wrote to memory of 2812	2144	2024-11-20_6c97afac7078c36833ebcfbcf96fad8e_karagany_mafia.exe	39
PID 2144 wrote to memory of 2812	2144	2024-11-20_6c97afac7078c36833ebcfbcf96fad8e_karagany_mafia.exe	39
PID 2144 wrote to memory of 2812	2144	2024-11-20_6c97afac7078c36833ebcfbcf96fad8e_karagany_mafia.exe	39
PID 2144 wrote to memory of 2760	2144	2024-11-20_6c97afac7078c36833ebcfbcf96fad8e_karagany_mafia.exe	42
PID 2144 wrote to memory of 2760	2144	2024-11-20_6c97afac7078c36833ebcfbcf96fad8e_karagany_mafia.exe	42
PID 2144 wrote to memory of 2760	2144	2024-11-20_6c97afac7078c36833ebcfbcf96fad8e_karagany_mafia.exe	42
PID 2144 wrote to memory of 2760	2144	2024-11-20_6c97afac7078c36833ebcfbcf96fad8e_karagany_mafia.exe	42
PID 2840 wrote to memory of 2632	2840	cysyegyp.exe	44
PID 2840 wrote to memory of 2632	2840	cysyegyp.exe	44
PID 2840 wrote to memory of 2632	2840	cysyegyp.exe	44
PID 2840 wrote to memory of 2632	2840	cysyegyp.exe	44
PID 2840 wrote to memory of 2632	2840	cysyegyp.exe	44
PID 2840 wrote to memory of 2632	2840	cysyegyp.exe	44

C:\Users\Admin\AppData\Local\Temp\2024-11-20_6c97afac7078c36833ebcfbcf96fad8e_karagany_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-20_6c97afac7078c36833ebcfbcf96fad8e_karagany_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2144
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lbwkrtb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3004
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cysyegyp.exe" C:\Windows\SysWOW64\lbwkrtb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3068
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create lbwkrtb binPath= "C:\Windows\SysWOW64\lbwkrtb\cysyegyp.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-11-20_6c97afac7078c36833ebcfbcf96fad8e_karagany_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2264
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description lbwkrtb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1444
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start lbwkrtb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2812
- 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:2760

C:\Windows\SysWOW64\lbwkrtb\cysyegyp.exe
C:\Windows\SysWOW64\lbwkrtb\cysyegyp.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-11-20_6c97afac7078c36833ebcfbcf96fad8e_karagany_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2840
- 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:2632

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\cysyegyp.exe

Filesize
13.7MB

MD5
0f5c10258441bd764bb60fe94382b906

SHA1
cabffe9e9a7a0a9d2f57f6221dddbb262b56ac24

SHA256
07d162cf0686bcf9e602fb5301d3b940bea96a61f2962df508338d05fc60a008

SHA512
d415648c493897aabd8a0d1d2fdea39ddaaa0180d9f2c46f33ab70266c937cc467a362504cd04ae5462fe0608deb839884b1615f98edddf14b8c8569c952745e

Download Submit
memory/2144-7-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2144-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2144-2-0x00000000001B0000-0x00000000001C3000-memory.dmp

Filesize
76KB

Download
memory/2144-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2144-8-0x00000000001B0000-0x00000000001C3000-memory.dmp

Filesize
76KB

Download
memory/2144-1-0x00000000002D0000-0x00000000003D0000-memory.dmp

Filesize
1024KB

Download
memory/2632-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2632-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2632-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2632-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2632-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2840-16-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads