tofsee | ff21828fb3915046a904aca7876e98a8f994b2fcbf872d0eee15b0f025380201

Analysis

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

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
31-12-2024 23:17

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General

Target

ff21828fb3915046a904aca7876e98a8f994b2fcbf872d0eee15b0f025380201.exe
Size

355KB
MD5

1d5d4b18e2f0f03c8de6d08390dc192c
SHA1

f76fe6a8dd3a26d51a94c7a44e93f549bd182518
SHA256

ff21828fb3915046a904aca7876e98a8f994b2fcbf872d0eee15b0f025380201
SHA512

e0a12427841f8c2f4f3655f0a42a210d5ae79bdb51d4a351315a800653b786ce2257600da7f3e2a592c65146594e06fa9cee68ff9dd62a991fa909f1fee4313d
SSDEEP

6144:hvo5HY2USvj5R/i2gCiX0oH1VmyerYDn1QqaFZczX3V5wRjejHH5TAb5:hA5HY2USr5R/i2gCy0oVVmyerK1/aFZ7

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\potlagro = "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
2900	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\potlagro\ImagePath = "C:\\Windows\\SysWOW64\\potlagro\\ukkkzqwo.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2192	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2672	ukkkzqwo.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2672 set thread context of 2192	2672	ukkkzqwo.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2444	sc.exe
2212	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 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	ukkkzqwo.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	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	ff21828fb3915046a904aca7876e98a8f994b2fcbf872d0eee15b0f025380201.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 3016 wrote to memory of 2652	3016	ff21828fb3915046a904aca7876e98a8f994b2fcbf872d0eee15b0f025380201.exe	31
PID 3016 wrote to memory of 2652	3016	ff21828fb3915046a904aca7876e98a8f994b2fcbf872d0eee15b0f025380201.exe	31
PID 3016 wrote to memory of 2652	3016	ff21828fb3915046a904aca7876e98a8f994b2fcbf872d0eee15b0f025380201.exe	31
PID 3016 wrote to memory of 2652	3016	ff21828fb3915046a904aca7876e98a8f994b2fcbf872d0eee15b0f025380201.exe	31
PID 3016 wrote to memory of 1336	3016	ff21828fb3915046a904aca7876e98a8f994b2fcbf872d0eee15b0f025380201.exe	33
PID 3016 wrote to memory of 1336	3016	ff21828fb3915046a904aca7876e98a8f994b2fcbf872d0eee15b0f025380201.exe	33
PID 3016 wrote to memory of 1336	3016	ff21828fb3915046a904aca7876e98a8f994b2fcbf872d0eee15b0f025380201.exe	33
PID 3016 wrote to memory of 1336	3016	ff21828fb3915046a904aca7876e98a8f994b2fcbf872d0eee15b0f025380201.exe	33
PID 3016 wrote to memory of 2444	3016	ff21828fb3915046a904aca7876e98a8f994b2fcbf872d0eee15b0f025380201.exe	35
PID 3016 wrote to memory of 2444	3016	ff21828fb3915046a904aca7876e98a8f994b2fcbf872d0eee15b0f025380201.exe	35
PID 3016 wrote to memory of 2444	3016	ff21828fb3915046a904aca7876e98a8f994b2fcbf872d0eee15b0f025380201.exe	35
PID 3016 wrote to memory of 2444	3016	ff21828fb3915046a904aca7876e98a8f994b2fcbf872d0eee15b0f025380201.exe	35
PID 3016 wrote to memory of 2212	3016	ff21828fb3915046a904aca7876e98a8f994b2fcbf872d0eee15b0f025380201.exe	37
PID 3016 wrote to memory of 2212	3016	ff21828fb3915046a904aca7876e98a8f994b2fcbf872d0eee15b0f025380201.exe	37
PID 3016 wrote to memory of 2212	3016	ff21828fb3915046a904aca7876e98a8f994b2fcbf872d0eee15b0f025380201.exe	37
PID 3016 wrote to memory of 2212	3016	ff21828fb3915046a904aca7876e98a8f994b2fcbf872d0eee15b0f025380201.exe	37
PID 3016 wrote to memory of 2724	3016	ff21828fb3915046a904aca7876e98a8f994b2fcbf872d0eee15b0f025380201.exe	39
PID 3016 wrote to memory of 2724	3016	ff21828fb3915046a904aca7876e98a8f994b2fcbf872d0eee15b0f025380201.exe	39
PID 3016 wrote to memory of 2724	3016	ff21828fb3915046a904aca7876e98a8f994b2fcbf872d0eee15b0f025380201.exe	39
PID 3016 wrote to memory of 2724	3016	ff21828fb3915046a904aca7876e98a8f994b2fcbf872d0eee15b0f025380201.exe	39
PID 3016 wrote to memory of 2900	3016	ff21828fb3915046a904aca7876e98a8f994b2fcbf872d0eee15b0f025380201.exe	42
PID 3016 wrote to memory of 2900	3016	ff21828fb3915046a904aca7876e98a8f994b2fcbf872d0eee15b0f025380201.exe	42
PID 3016 wrote to memory of 2900	3016	ff21828fb3915046a904aca7876e98a8f994b2fcbf872d0eee15b0f025380201.exe	42
PID 3016 wrote to memory of 2900	3016	ff21828fb3915046a904aca7876e98a8f994b2fcbf872d0eee15b0f025380201.exe	42
PID 2672 wrote to memory of 2192	2672	ukkkzqwo.exe	44
PID 2672 wrote to memory of 2192	2672	ukkkzqwo.exe	44
PID 2672 wrote to memory of 2192	2672	ukkkzqwo.exe	44
PID 2672 wrote to memory of 2192	2672	ukkkzqwo.exe	44
PID 2672 wrote to memory of 2192	2672	ukkkzqwo.exe	44
PID 2672 wrote to memory of 2192	2672	ukkkzqwo.exe	44

C:\Users\Admin\AppData\Local\Temp\ff21828fb3915046a904aca7876e98a8f994b2fcbf872d0eee15b0f025380201.exe
"C:\Users\Admin\AppData\Local\Temp\ff21828fb3915046a904aca7876e98a8f994b2fcbf872d0eee15b0f025380201.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3016
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\potlagro\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2652
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ukkkzqwo.exe" C:\Windows\SysWOW64\potlagro\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1336
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create potlagro binPath= "C:\Windows\SysWOW64\potlagro\ukkkzqwo.exe /d\"C:\Users\Admin\AppData\Local\Temp\ff21828fb3915046a904aca7876e98a8f994b2fcbf872d0eee15b0f025380201.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2444
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description potlagro "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2212
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start potlagro
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2724
- 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:2900

C:\Windows\SysWOW64\potlagro\ukkkzqwo.exe
C:\Windows\SysWOW64\potlagro\ukkkzqwo.exe /d"C:\Users\Admin\AppData\Local\Temp\ff21828fb3915046a904aca7876e98a8f994b2fcbf872d0eee15b0f025380201.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2672
- 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:2192

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\ukkkzqwo.exe

Filesize
12.6MB

MD5
f915e02a863076871faf6dad4e35dba8

SHA1
e4c32e6bd355184aa85af6121b9f95386134405e

SHA256
341b90b0067d8e57cbe14a32139b0f7a121e390f5294f7973f0603ff153bbe93

SHA512
25016e5933763291dc5eaf6a9023350835625cc78671a80ade789c74e7e1daa482ad59978238ff4abaf8450b75433b47dc03ce89ea9b0683f756517b94ceb51b

Download Submit
memory/2192-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2192-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2192-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2192-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2192-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2672-15-0x0000000000400000-0x00000000016CE000-memory.dmp

Filesize
18.8MB

Download
memory/3016-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3016-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/3016-8-0x0000000000400000-0x00000000016CE000-memory.dmp

Filesize
18.8MB

Download
memory/3016-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3016-9-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/3016-1-0x00000000017B0000-0x00000000018B0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads