tofsee | 4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
23-11-2024 21:49

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General

Target

4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe
Size

10.4MB
MD5

154abc820d003af3ec2b3964df199e18
SHA1

0f6ac12b415c34330a1bc558457aae5600fb09f4
SHA256

4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c
SHA512

242bcc4358ca4d7872bbd517ab9879e354f97024b720cf77bf5e86f51af5c2799855c5581b384ffa22a45a9f95ba5a3e028fcb3ce4d68e79c6107f5ff1b2e779
SSDEEP

49152:ovqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqo:oL

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

quadoil.ru

lakeflex.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

Processes:

svchost.exe

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\wxausmdv = "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

Processes:

netsh.exe

pid	Process
2552	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wxausmdv\ImagePath = "C:\\Windows\\SysWOW64\\wxausmdv\\kcubarcj.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid	Process
2980	svchost.exe

Executes dropped EXE 1 IoCs

Processes:

kcubarcj.exe

pid	Process
2824	kcubarcj.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

kcubarcj.exe

description	pid	Process	procid_target
PID 2824 set thread context of 2980	2824	kcubarcj.exe	43

Launches sc.exe 3 IoCs

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

Processes:

sc.exesc.exesc.exe

pid	Process
2896	sc.exe
2768	sc.exe
2764	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

Processes:

netsh.exe

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

Processes:

cmd.exesc.exesvchost.exekcubarcj.exe4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.execmd.exesc.exesc.exenetsh.exe

description	ioc	Process
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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	kcubarcj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.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	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exekcubarcj.exe

description	pid	Process	procid_target
PID 2216 wrote to memory of 2684	2216	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	30
PID 2216 wrote to memory of 2684	2216	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	30
PID 2216 wrote to memory of 2684	2216	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	30
PID 2216 wrote to memory of 2684	2216	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	30
PID 2216 wrote to memory of 2812	2216	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	32
PID 2216 wrote to memory of 2812	2216	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	32
PID 2216 wrote to memory of 2812	2216	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	32
PID 2216 wrote to memory of 2812	2216	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	32
PID 2216 wrote to memory of 2896	2216	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	34
PID 2216 wrote to memory of 2896	2216	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	34
PID 2216 wrote to memory of 2896	2216	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	34
PID 2216 wrote to memory of 2896	2216	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	34
PID 2216 wrote to memory of 2768	2216	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	36
PID 2216 wrote to memory of 2768	2216	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	36
PID 2216 wrote to memory of 2768	2216	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	36
PID 2216 wrote to memory of 2768	2216	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	36
PID 2216 wrote to memory of 2764	2216	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	38
PID 2216 wrote to memory of 2764	2216	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	38
PID 2216 wrote to memory of 2764	2216	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	38
PID 2216 wrote to memory of 2764	2216	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	38
PID 2216 wrote to memory of 2552	2216	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	41
PID 2216 wrote to memory of 2552	2216	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	41
PID 2216 wrote to memory of 2552	2216	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	41
PID 2216 wrote to memory of 2552	2216	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	41
PID 2824 wrote to memory of 2980	2824	kcubarcj.exe	43
PID 2824 wrote to memory of 2980	2824	kcubarcj.exe	43
PID 2824 wrote to memory of 2980	2824	kcubarcj.exe	43
PID 2824 wrote to memory of 2980	2824	kcubarcj.exe	43
PID 2824 wrote to memory of 2980	2824	kcubarcj.exe	43
PID 2824 wrote to memory of 2980	2824	kcubarcj.exe	43

C:\Users\Admin\AppData\Local\Temp\4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe
"C:\Users\Admin\AppData\Local\Temp\4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2216
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wxausmdv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2684
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kcubarcj.exe" C:\Windows\SysWOW64\wxausmdv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2812
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create wxausmdv binPath= "C:\Windows\SysWOW64\wxausmdv\kcubarcj.exe /d\"C:\Users\Admin\AppData\Local\Temp\4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2896
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description wxausmdv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2768
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start wxausmdv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2764
- 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:2552

C:\Windows\SysWOW64\wxausmdv\kcubarcj.exe
C:\Windows\SysWOW64\wxausmdv\kcubarcj.exe /d"C:\Users\Admin\AppData\Local\Temp\4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2824
- 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:2980

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\kcubarcj.exe

Filesize
12.6MB

MD5
0f94a02ca55ef20e6ad6386904da3179

SHA1
c42251992b40e154666634fc2e1274660feaabb6

SHA256
54c918f2e16a6b027512d4d15af03c8b9aa9e49ad80fb7fc04adabf29ce6e073

SHA512
444f34d0e2e9b9efdbaff0e8ddb00376586bb05c5a24f3da8ca219e51dd4e8d1a46e4126320668a973f29849bb94360c93b56417c599464fc0f77baf3c7eb8ac

Download Submit
memory/2216-9-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2216-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2216-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2216-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2216-8-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/2216-1-0x00000000017F0000-0x00000000018F0000-memory.dmp

Filesize
1024KB

Download
memory/2824-16-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/2980-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2980-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2980-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2980-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2980-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download