tofsee | 3a0c68d2618cba30b54820dd43efae83e393c81c52a84fb1c4a744e7f82120ec

Analysis

max time kernel
145s
max time network
125s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03/09/2024, 13:52

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General

Target

20240903c3f72bad2615b1edf087c4127b22e474mafia.exe
Size

12.4MB
MD5

c3f72bad2615b1edf087c4127b22e474
SHA1

27dcaad1b3860f3a972493397842fb6cf9eff190
SHA256

3a0c68d2618cba30b54820dd43efae83e393c81c52a84fb1c4a744e7f82120ec
SHA512

72e1f9191b874d6e2ef3d36443ea94ae8219c0a9e3dbc364276f62aaf3b3f562f5a2444226be42dae3dab7f9dfa1621e091e7405bec013964bbc7d8eb4d0ce73
SSDEEP

6144:n+rWO2zeSPDjMXMH7Ll4aFpWVqIwUAP97GEwHrG2+e1x2:n+r1IeSXMXc7LlxWV4Ug97GZ+ej

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

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\lqambjyf = "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
2876	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\lqambjyf\ImagePath = "C:\\Windows\\SysWOW64\\lqambjyf\\pgzcjwih.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2760	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2988	pgzcjwih.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2988 set thread context of 2760	2988	pgzcjwih.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
2184	sc.exe
2584	sc.exe
2852	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	20240903c3f72bad2615b1edf087c4127b22e474mafia.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	pgzcjwih.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2100 wrote to memory of 2536	2100	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	30
PID 2100 wrote to memory of 2536	2100	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	30
PID 2100 wrote to memory of 2536	2100	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	30
PID 2100 wrote to memory of 2536	2100	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	30
PID 2100 wrote to memory of 2164	2100	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	32
PID 2100 wrote to memory of 2164	2100	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	32
PID 2100 wrote to memory of 2164	2100	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	32
PID 2100 wrote to memory of 2164	2100	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	32
PID 2100 wrote to memory of 2184	2100	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	34
PID 2100 wrote to memory of 2184	2100	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	34
PID 2100 wrote to memory of 2184	2100	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	34
PID 2100 wrote to memory of 2184	2100	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	34
PID 2100 wrote to memory of 2584	2100	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	37
PID 2100 wrote to memory of 2584	2100	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	37
PID 2100 wrote to memory of 2584	2100	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	37
PID 2100 wrote to memory of 2584	2100	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	37
PID 2100 wrote to memory of 2852	2100	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	39
PID 2100 wrote to memory of 2852	2100	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	39
PID 2100 wrote to memory of 2852	2100	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	39
PID 2100 wrote to memory of 2852	2100	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	39
PID 2988 wrote to memory of 2760	2988	pgzcjwih.exe	42
PID 2988 wrote to memory of 2760	2988	pgzcjwih.exe	42
PID 2988 wrote to memory of 2760	2988	pgzcjwih.exe	42
PID 2988 wrote to memory of 2760	2988	pgzcjwih.exe	42
PID 2988 wrote to memory of 2760	2988	pgzcjwih.exe	42
PID 2988 wrote to memory of 2760	2988	pgzcjwih.exe	42
PID 2100 wrote to memory of 2876	2100	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	43
PID 2100 wrote to memory of 2876	2100	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	43
PID 2100 wrote to memory of 2876	2100	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	43
PID 2100 wrote to memory of 2876	2100	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	43

C:\Users\Admin\AppData\Local\Temp\20240903c3f72bad2615b1edf087c4127b22e474mafia.exe
"C:\Users\Admin\AppData\Local\Temp\20240903c3f72bad2615b1edf087c4127b22e474mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2100
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lqambjyf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2536
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pgzcjwih.exe" C:\Windows\SysWOW64\lqambjyf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2164
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create lqambjyf binPath= "C:\Windows\SysWOW64\lqambjyf\pgzcjwih.exe /d\"C:\Users\Admin\AppData\Local\Temp\20240903c3f72bad2615b1edf087c4127b22e474mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2184
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description lqambjyf "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2584
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start lqambjyf
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2852
- 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:2876

C:\Windows\SysWOW64\lqambjyf\pgzcjwih.exe
C:\Windows\SysWOW64\lqambjyf\pgzcjwih.exe /d"C:\Users\Admin\AppData\Local\Temp\20240903c3f72bad2615b1edf087c4127b22e474mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2988
- 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:2760

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\pgzcjwih.exe

Filesize
11.9MB

MD5
4dbac7c86aa4fdc432ac24c43ded480c

SHA1
de038761af9a725437f1efe1b111fcd635ce27ea

SHA256
167ab315cc8d1a16908208a61cb352b87dcbd85d7ec4188e7d3c5789f02fc780

SHA512
4ce8a883f65d5fb7fba5c7052948759a2d552eb7a714df669f8c26f69d5922c4facc69143063e30e9908dd877100f2c9e4fae9782f91a238b892db9edffde50b

Download Submit
memory/2100-1-0x00000000006C0000-0x00000000007C0000-memory.dmp

Filesize
1024KB

Download
memory/2100-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2100-14-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2100-13-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/2760-10-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2760-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2760-7-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2760-15-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2760-16-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2988-11-0x0000000000400000-0x000000000051A000-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