tofsee | 4ba2331be4aba69cc1be792caf33d02993bf36b7d75835dac3c541153ab6a919

Analysis

max time kernel
141s
max time network
127s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03/09/2024, 13:36

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General

Target

202409031415fb28d4ec24974686845f861affd4mafia.exe
Size

11.0MB
MD5

1415fb28d4ec24974686845f861affd4
SHA1

54f4df7f0d829b32e39f01203f6d1b1703f9be21
SHA256

4ba2331be4aba69cc1be792caf33d02993bf36b7d75835dac3c541153ab6a919
SHA512

ac79a64a940ae7078a9e424bd282e091cfbd77869f63ef5e9bd9befdbf09fe3ce2731aa9ef6fb2750d7c1deea1853bc3ce5dabef61797bbdca10a8d645a259ba
SSDEEP

6144:3+rWO2zeSPDjMXMH7Ll4aFpWVqIwUAP97GEwHrG2+e1x2:3+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\dhihbrs = "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
2708	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\dhihbrs\ImagePath = "C:\\Windows\\SysWOW64\\dhihbrs\\lkwsxhre.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2188	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2776	lkwsxhre.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2776 set thread context of 2188	2776	lkwsxhre.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
2888	sc.exe
1164	sc.exe
2724	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	202409031415fb28d4ec24974686845f861affd4mafia.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	lkwsxhre.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2112 wrote to memory of 2344	2112	202409031415fb28d4ec24974686845f861affd4mafia.exe	30
PID 2112 wrote to memory of 2344	2112	202409031415fb28d4ec24974686845f861affd4mafia.exe	30
PID 2112 wrote to memory of 2344	2112	202409031415fb28d4ec24974686845f861affd4mafia.exe	30
PID 2112 wrote to memory of 2344	2112	202409031415fb28d4ec24974686845f861affd4mafia.exe	30
PID 2112 wrote to memory of 2544	2112	202409031415fb28d4ec24974686845f861affd4mafia.exe	32
PID 2112 wrote to memory of 2544	2112	202409031415fb28d4ec24974686845f861affd4mafia.exe	32
PID 2112 wrote to memory of 2544	2112	202409031415fb28d4ec24974686845f861affd4mafia.exe	32
PID 2112 wrote to memory of 2544	2112	202409031415fb28d4ec24974686845f861affd4mafia.exe	32
PID 2112 wrote to memory of 1164	2112	202409031415fb28d4ec24974686845f861affd4mafia.exe	35
PID 2112 wrote to memory of 1164	2112	202409031415fb28d4ec24974686845f861affd4mafia.exe	35
PID 2112 wrote to memory of 1164	2112	202409031415fb28d4ec24974686845f861affd4mafia.exe	35
PID 2112 wrote to memory of 1164	2112	202409031415fb28d4ec24974686845f861affd4mafia.exe	35
PID 2112 wrote to memory of 2724	2112	202409031415fb28d4ec24974686845f861affd4mafia.exe	37
PID 2112 wrote to memory of 2724	2112	202409031415fb28d4ec24974686845f861affd4mafia.exe	37
PID 2112 wrote to memory of 2724	2112	202409031415fb28d4ec24974686845f861affd4mafia.exe	37
PID 2112 wrote to memory of 2724	2112	202409031415fb28d4ec24974686845f861affd4mafia.exe	37
PID 2112 wrote to memory of 2888	2112	202409031415fb28d4ec24974686845f861affd4mafia.exe	39
PID 2112 wrote to memory of 2888	2112	202409031415fb28d4ec24974686845f861affd4mafia.exe	39
PID 2112 wrote to memory of 2888	2112	202409031415fb28d4ec24974686845f861affd4mafia.exe	39
PID 2112 wrote to memory of 2888	2112	202409031415fb28d4ec24974686845f861affd4mafia.exe	39
PID 2776 wrote to memory of 2188	2776	lkwsxhre.exe	42
PID 2776 wrote to memory of 2188	2776	lkwsxhre.exe	42
PID 2776 wrote to memory of 2188	2776	lkwsxhre.exe	42
PID 2776 wrote to memory of 2188	2776	lkwsxhre.exe	42
PID 2776 wrote to memory of 2188	2776	lkwsxhre.exe	42
PID 2776 wrote to memory of 2188	2776	lkwsxhre.exe	42
PID 2112 wrote to memory of 2708	2112	202409031415fb28d4ec24974686845f861affd4mafia.exe	43
PID 2112 wrote to memory of 2708	2112	202409031415fb28d4ec24974686845f861affd4mafia.exe	43
PID 2112 wrote to memory of 2708	2112	202409031415fb28d4ec24974686845f861affd4mafia.exe	43
PID 2112 wrote to memory of 2708	2112	202409031415fb28d4ec24974686845f861affd4mafia.exe	43

C:\Users\Admin\AppData\Local\Temp\202409031415fb28d4ec24974686845f861affd4mafia.exe
"C:\Users\Admin\AppData\Local\Temp\202409031415fb28d4ec24974686845f861affd4mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2112
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dhihbrs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2344
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\lkwsxhre.exe" C:\Windows\SysWOW64\dhihbrs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2544
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create dhihbrs binPath= "C:\Windows\SysWOW64\dhihbrs\lkwsxhre.exe /d\"C:\Users\Admin\AppData\Local\Temp\202409031415fb28d4ec24974686845f861affd4mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1164
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description dhihbrs "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2724
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start dhihbrs
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2888
- 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:2708

C:\Windows\SysWOW64\dhihbrs\lkwsxhre.exe
C:\Windows\SysWOW64\dhihbrs\lkwsxhre.exe /d"C:\Users\Admin\AppData\Local\Temp\202409031415fb28d4ec24974686845f861affd4mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2776
- 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:2188

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\lkwsxhre.exe

Filesize
13.6MB

MD5
f7ff35b6250901ac785c9883e90b57e3

SHA1
f5150cbf4ff67895e256b8717995c16f4b3f218d

SHA256
0962624939818e7359a5517f566b7d02968fdfcbae3b44e1c101ff800372adec

SHA512
20d5c6a401965ac983f30c31e7df0b083cd55101ef016a6659695de74b099c1898973c3b7bd9df370bb5c03f2910d46af318d419fd766989025fc89858086dc8

Download Submit
memory/2112-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2112-1-0x0000000000270000-0x0000000000370000-memory.dmp

Filesize
1024KB

Download
memory/2112-14-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2112-13-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/2112-15-0x0000000000270000-0x0000000000370000-memory.dmp

Filesize
1024KB

Download
memory/2188-10-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2188-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2188-7-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2188-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2188-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2776-11-0x0000000000400000-0x000000000051A000-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