tofsee | cf426b4bd4d5243c3d88355b980084776d885c36dfb179975f28af9578deaf0c

Analysis

max time kernel
146s
max time network
145s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21-12-2024 17:40

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General

Target

cf426b4bd4d5243c3d88355b980084776d885c36dfb179975f28af9578deaf0c.exe
Size

167KB
MD5

c2dd5c2437c8dfee1e944b43354c2345
SHA1

6b4275b19ac0d4c976beee7b774ffe304376da8f
SHA256

cf426b4bd4d5243c3d88355b980084776d885c36dfb179975f28af9578deaf0c
SHA512

892e044aa9fa4b29912c70a927cb6d72f952c333662cc22a08649aa1f639be53f54ab4409a2f5305ce8651ff2c7503609542748c8b9960a1260e505664070e36
SSDEEP

3072:HWt4tFAaLDnwOa8aCj9LRnj1A752+HoALd1HHX:2ALDwB8awTnj3+HoiP

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

defeatwax.ru

refabyd.info

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\sqjtejoj = "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
2988	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\sqjtejoj\ImagePath = "C:\\Windows\\SysWOW64\\sqjtejoj\\vyrzxzhr.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2772	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2816	vyrzxzhr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2816 set thread context of 2772	2816	vyrzxzhr.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2508	sc.exe
568	sc.exe
2704	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	cf426b4bd4d5243c3d88355b980084776d885c36dfb179975f28af9578deaf0c.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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	vyrzxzhr.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1920 wrote to memory of 2472	1920	cf426b4bd4d5243c3d88355b980084776d885c36dfb179975f28af9578deaf0c.exe	31
PID 1920 wrote to memory of 2472	1920	cf426b4bd4d5243c3d88355b980084776d885c36dfb179975f28af9578deaf0c.exe	31
PID 1920 wrote to memory of 2472	1920	cf426b4bd4d5243c3d88355b980084776d885c36dfb179975f28af9578deaf0c.exe	31
PID 1920 wrote to memory of 2472	1920	cf426b4bd4d5243c3d88355b980084776d885c36dfb179975f28af9578deaf0c.exe	31
PID 1920 wrote to memory of 768	1920	cf426b4bd4d5243c3d88355b980084776d885c36dfb179975f28af9578deaf0c.exe	33
PID 1920 wrote to memory of 768	1920	cf426b4bd4d5243c3d88355b980084776d885c36dfb179975f28af9578deaf0c.exe	33
PID 1920 wrote to memory of 768	1920	cf426b4bd4d5243c3d88355b980084776d885c36dfb179975f28af9578deaf0c.exe	33
PID 1920 wrote to memory of 768	1920	cf426b4bd4d5243c3d88355b980084776d885c36dfb179975f28af9578deaf0c.exe	33
PID 1920 wrote to memory of 2508	1920	cf426b4bd4d5243c3d88355b980084776d885c36dfb179975f28af9578deaf0c.exe	35
PID 1920 wrote to memory of 2508	1920	cf426b4bd4d5243c3d88355b980084776d885c36dfb179975f28af9578deaf0c.exe	35
PID 1920 wrote to memory of 2508	1920	cf426b4bd4d5243c3d88355b980084776d885c36dfb179975f28af9578deaf0c.exe	35
PID 1920 wrote to memory of 2508	1920	cf426b4bd4d5243c3d88355b980084776d885c36dfb179975f28af9578deaf0c.exe	35
PID 1920 wrote to memory of 568	1920	cf426b4bd4d5243c3d88355b980084776d885c36dfb179975f28af9578deaf0c.exe	37
PID 1920 wrote to memory of 568	1920	cf426b4bd4d5243c3d88355b980084776d885c36dfb179975f28af9578deaf0c.exe	37
PID 1920 wrote to memory of 568	1920	cf426b4bd4d5243c3d88355b980084776d885c36dfb179975f28af9578deaf0c.exe	37
PID 1920 wrote to memory of 568	1920	cf426b4bd4d5243c3d88355b980084776d885c36dfb179975f28af9578deaf0c.exe	37
PID 1920 wrote to memory of 2704	1920	cf426b4bd4d5243c3d88355b980084776d885c36dfb179975f28af9578deaf0c.exe	39
PID 1920 wrote to memory of 2704	1920	cf426b4bd4d5243c3d88355b980084776d885c36dfb179975f28af9578deaf0c.exe	39
PID 1920 wrote to memory of 2704	1920	cf426b4bd4d5243c3d88355b980084776d885c36dfb179975f28af9578deaf0c.exe	39
PID 1920 wrote to memory of 2704	1920	cf426b4bd4d5243c3d88355b980084776d885c36dfb179975f28af9578deaf0c.exe	39
PID 1920 wrote to memory of 2988	1920	cf426b4bd4d5243c3d88355b980084776d885c36dfb179975f28af9578deaf0c.exe	42
PID 1920 wrote to memory of 2988	1920	cf426b4bd4d5243c3d88355b980084776d885c36dfb179975f28af9578deaf0c.exe	42
PID 1920 wrote to memory of 2988	1920	cf426b4bd4d5243c3d88355b980084776d885c36dfb179975f28af9578deaf0c.exe	42
PID 1920 wrote to memory of 2988	1920	cf426b4bd4d5243c3d88355b980084776d885c36dfb179975f28af9578deaf0c.exe	42
PID 2816 wrote to memory of 2772	2816	vyrzxzhr.exe	44
PID 2816 wrote to memory of 2772	2816	vyrzxzhr.exe	44
PID 2816 wrote to memory of 2772	2816	vyrzxzhr.exe	44
PID 2816 wrote to memory of 2772	2816	vyrzxzhr.exe	44
PID 2816 wrote to memory of 2772	2816	vyrzxzhr.exe	44
PID 2816 wrote to memory of 2772	2816	vyrzxzhr.exe	44

C:\Users\Admin\AppData\Local\Temp\cf426b4bd4d5243c3d88355b980084776d885c36dfb179975f28af9578deaf0c.exe
"C:\Users\Admin\AppData\Local\Temp\cf426b4bd4d5243c3d88355b980084776d885c36dfb179975f28af9578deaf0c.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1920
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\sqjtejoj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2472
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vyrzxzhr.exe" C:\Windows\SysWOW64\sqjtejoj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:768
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create sqjtejoj binPath= "C:\Windows\SysWOW64\sqjtejoj\vyrzxzhr.exe /d\"C:\Users\Admin\AppData\Local\Temp\cf426b4bd4d5243c3d88355b980084776d885c36dfb179975f28af9578deaf0c.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2508
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description sqjtejoj "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:568
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start sqjtejoj
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2704
- 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:2988

C:\Windows\SysWOW64\sqjtejoj\vyrzxzhr.exe
C:\Windows\SysWOW64\sqjtejoj\vyrzxzhr.exe /d"C:\Users\Admin\AppData\Local\Temp\cf426b4bd4d5243c3d88355b980084776d885c36dfb179975f28af9578deaf0c.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2816
- 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:2772

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\vyrzxzhr.exe

Filesize
11.5MB

MD5
3b43ab16999584d3c0b2dada04b7a088

SHA1
7059b714a1963b59c728bd64b0189de8f7ba5703

SHA256
a9c0d8226adc71478d79517d85163621eed7c9de2ca45b546f17bb7077972a6a

SHA512
9ef90ffe6d395da590368f22c59ee515b8c65fe04c5675c4c239f2b9fd05b58a3999155611786483aedcc4ee602681e013394e1b05188137b81ff8efa9fcdd6f

Download Submit
memory/1920-8-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1920-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1920-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/1920-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1920-9-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/1920-1-0x0000000000580000-0x0000000000680000-memory.dmp

Filesize
1024KB

Download
memory/2772-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2772-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2772-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2772-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2772-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2816-17-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads