tofsee | 588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c

Analysis

max time kernel
117s
max time network
123s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
23-11-2024 14:34

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General

Target

588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe
Size

12.6MB
MD5

0c4b956df94e7fa77967043428ee105d
SHA1

7ec22983461cd45e2fba80b561b9006fd5e012be
SHA256

588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c
SHA512

1d0b850ec7273459e454b24ca3ead47d36a270762cc7a348f15df73b63d31390f795e9283e84b401148515ad2404e53993221fee92cf4ca0cd851638e054b18e
SSDEEP

393216:fH2222222222222222222222222222222222222222222222222222222222222h:v222222222222222222222222222222G

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\vluyxivt = "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
3068	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\vluyxivt\ImagePath = "C:\\Windows\\SysWOW64\\vluyxivt\\bdwhowka.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2740	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2904	bdwhowka.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2904 set thread context of 2740	2904	bdwhowka.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2976	sc.exe
2940	sc.exe
2944	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	netsh.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	bdwhowka.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2820 wrote to memory of 2212	2820	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	30
PID 2820 wrote to memory of 2212	2820	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	30
PID 2820 wrote to memory of 2212	2820	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	30
PID 2820 wrote to memory of 2212	2820	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	30
PID 2820 wrote to memory of 2880	2820	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	32
PID 2820 wrote to memory of 2880	2820	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	32
PID 2820 wrote to memory of 2880	2820	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	32
PID 2820 wrote to memory of 2880	2820	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	32
PID 2820 wrote to memory of 2976	2820	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	34
PID 2820 wrote to memory of 2976	2820	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	34
PID 2820 wrote to memory of 2976	2820	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	34
PID 2820 wrote to memory of 2976	2820	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	34
PID 2820 wrote to memory of 2940	2820	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	36
PID 2820 wrote to memory of 2940	2820	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	36
PID 2820 wrote to memory of 2940	2820	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	36
PID 2820 wrote to memory of 2940	2820	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	36
PID 2820 wrote to memory of 2944	2820	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	38
PID 2820 wrote to memory of 2944	2820	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	38
PID 2820 wrote to memory of 2944	2820	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	38
PID 2820 wrote to memory of 2944	2820	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	38
PID 2820 wrote to memory of 3068	2820	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	40
PID 2820 wrote to memory of 3068	2820	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	40
PID 2820 wrote to memory of 3068	2820	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	40
PID 2820 wrote to memory of 3068	2820	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	40
PID 2904 wrote to memory of 2740	2904	bdwhowka.exe	43
PID 2904 wrote to memory of 2740	2904	bdwhowka.exe	43
PID 2904 wrote to memory of 2740	2904	bdwhowka.exe	43
PID 2904 wrote to memory of 2740	2904	bdwhowka.exe	43
PID 2904 wrote to memory of 2740	2904	bdwhowka.exe	43
PID 2904 wrote to memory of 2740	2904	bdwhowka.exe	43

C:\Users\Admin\AppData\Local\Temp\588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe
"C:\Users\Admin\AppData\Local\Temp\588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2820
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vluyxivt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2212
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bdwhowka.exe" C:\Windows\SysWOW64\vluyxivt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2880
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create vluyxivt binPath= "C:\Windows\SysWOW64\vluyxivt\bdwhowka.exe /d\"C:\Users\Admin\AppData\Local\Temp\588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2976
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description vluyxivt "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2940
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start vluyxivt
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2944
- 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:3068

C:\Windows\SysWOW64\vluyxivt\bdwhowka.exe
C:\Windows\SysWOW64\vluyxivt\bdwhowka.exe /d"C:\Users\Admin\AppData\Local\Temp\588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2904
- 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:2740

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\bdwhowka.exe

Filesize
12.4MB

MD5
1dc84da8b240063dacf5f8cd4be784c3

SHA1
c507a0490b23159d14c9e7b6e716da9ca1b4a9bd

SHA256
dea2c1d6bdf076b78766486ccf39c7262478458f0f761ee5cfff24c22f1de17b

SHA512
fabdfcd98dd8d3064678bcc123ef28e4c5390ef02cb1cb059e3652912efb5b8b54bc293b5bc2a560d5eabbf459ebbd7d79048fa25459bf93018f7e58c0c60f8c

Download Submit
memory/2740-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2740-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2740-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2740-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2740-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2820-8-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2820-1-0x0000000000290000-0x0000000000390000-memory.dmp

Filesize
1024KB

Download
memory/2820-6-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/2820-7-0x00000000001B0000-0x00000000001C3000-memory.dmp

Filesize
76KB

Download
memory/2820-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2820-2-0x00000000001B0000-0x00000000001C3000-memory.dmp

Filesize
76KB

Download
memory/2904-17-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads