tofsee | 8e89363cc4699cf8b0cafdc315b3f7812bdfaed7d08fc12405d57819a578c409

Analysis

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

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22-11-2024 21:33

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

8e89363cc4699cf8b0cafdc315b3f7812bdfaed7d08fc12405d57819a578c409.exe
Size

12.2MB
MD5

6d34bacd46809e859bff58500bf02794
SHA1

a75d1bcc9dda02dd6bb8dd886d626bdc88d5195d
SHA256

8e89363cc4699cf8b0cafdc315b3f7812bdfaed7d08fc12405d57819a578c409
SHA512

61636f313ebeabd34cc4d320a2efe23d45c8c7118da83d96800d7cdeffcd23495cbf7a5a018204c9b16d58a9e9d6b644ce18e7680cfb6f8122d49924d65be3f9
SSDEEP

6144:d9fvApQ0bA3aGmYv+943cj9G+LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLW:d9fvApQ0bjGme84Mj90

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\ijcjaqzw = "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
2904	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\ijcjaqzw\ImagePath = "C:\\Windows\\SysWOW64\\ijcjaqzw\\siiixoum.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2968	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2748	siiixoum.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2748 set thread context of 2968	2748	siiixoum.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
1700	sc.exe
1044	sc.exe
892	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8e89363cc4699cf8b0cafdc315b3f7812bdfaed7d08fc12405d57819a578c409.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	siiixoum.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

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2440 wrote to memory of 2164	2440	8e89363cc4699cf8b0cafdc315b3f7812bdfaed7d08fc12405d57819a578c409.exe	30
PID 2440 wrote to memory of 2164	2440	8e89363cc4699cf8b0cafdc315b3f7812bdfaed7d08fc12405d57819a578c409.exe	30
PID 2440 wrote to memory of 2164	2440	8e89363cc4699cf8b0cafdc315b3f7812bdfaed7d08fc12405d57819a578c409.exe	30
PID 2440 wrote to memory of 2164	2440	8e89363cc4699cf8b0cafdc315b3f7812bdfaed7d08fc12405d57819a578c409.exe	30
PID 2440 wrote to memory of 2564	2440	8e89363cc4699cf8b0cafdc315b3f7812bdfaed7d08fc12405d57819a578c409.exe	32
PID 2440 wrote to memory of 2564	2440	8e89363cc4699cf8b0cafdc315b3f7812bdfaed7d08fc12405d57819a578c409.exe	32
PID 2440 wrote to memory of 2564	2440	8e89363cc4699cf8b0cafdc315b3f7812bdfaed7d08fc12405d57819a578c409.exe	32
PID 2440 wrote to memory of 2564	2440	8e89363cc4699cf8b0cafdc315b3f7812bdfaed7d08fc12405d57819a578c409.exe	32
PID 2440 wrote to memory of 1700	2440	8e89363cc4699cf8b0cafdc315b3f7812bdfaed7d08fc12405d57819a578c409.exe	34
PID 2440 wrote to memory of 1700	2440	8e89363cc4699cf8b0cafdc315b3f7812bdfaed7d08fc12405d57819a578c409.exe	34
PID 2440 wrote to memory of 1700	2440	8e89363cc4699cf8b0cafdc315b3f7812bdfaed7d08fc12405d57819a578c409.exe	34
PID 2440 wrote to memory of 1700	2440	8e89363cc4699cf8b0cafdc315b3f7812bdfaed7d08fc12405d57819a578c409.exe	34
PID 2440 wrote to memory of 1044	2440	8e89363cc4699cf8b0cafdc315b3f7812bdfaed7d08fc12405d57819a578c409.exe	36
PID 2440 wrote to memory of 1044	2440	8e89363cc4699cf8b0cafdc315b3f7812bdfaed7d08fc12405d57819a578c409.exe	36
PID 2440 wrote to memory of 1044	2440	8e89363cc4699cf8b0cafdc315b3f7812bdfaed7d08fc12405d57819a578c409.exe	36
PID 2440 wrote to memory of 1044	2440	8e89363cc4699cf8b0cafdc315b3f7812bdfaed7d08fc12405d57819a578c409.exe	36
PID 2440 wrote to memory of 892	2440	8e89363cc4699cf8b0cafdc315b3f7812bdfaed7d08fc12405d57819a578c409.exe	38
PID 2440 wrote to memory of 892	2440	8e89363cc4699cf8b0cafdc315b3f7812bdfaed7d08fc12405d57819a578c409.exe	38
PID 2440 wrote to memory of 892	2440	8e89363cc4699cf8b0cafdc315b3f7812bdfaed7d08fc12405d57819a578c409.exe	38
PID 2440 wrote to memory of 892	2440	8e89363cc4699cf8b0cafdc315b3f7812bdfaed7d08fc12405d57819a578c409.exe	38
PID 2440 wrote to memory of 2904	2440	8e89363cc4699cf8b0cafdc315b3f7812bdfaed7d08fc12405d57819a578c409.exe	41
PID 2440 wrote to memory of 2904	2440	8e89363cc4699cf8b0cafdc315b3f7812bdfaed7d08fc12405d57819a578c409.exe	41
PID 2440 wrote to memory of 2904	2440	8e89363cc4699cf8b0cafdc315b3f7812bdfaed7d08fc12405d57819a578c409.exe	41
PID 2440 wrote to memory of 2904	2440	8e89363cc4699cf8b0cafdc315b3f7812bdfaed7d08fc12405d57819a578c409.exe	41
PID 2748 wrote to memory of 2968	2748	siiixoum.exe	43
PID 2748 wrote to memory of 2968	2748	siiixoum.exe	43
PID 2748 wrote to memory of 2968	2748	siiixoum.exe	43
PID 2748 wrote to memory of 2968	2748	siiixoum.exe	43
PID 2748 wrote to memory of 2968	2748	siiixoum.exe	43
PID 2748 wrote to memory of 2968	2748	siiixoum.exe	43

C:\Users\Admin\AppData\Local\Temp\8e89363cc4699cf8b0cafdc315b3f7812bdfaed7d08fc12405d57819a578c409.exe
"C:\Users\Admin\AppData\Local\Temp\8e89363cc4699cf8b0cafdc315b3f7812bdfaed7d08fc12405d57819a578c409.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2440
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ijcjaqzw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2164
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\siiixoum.exe" C:\Windows\SysWOW64\ijcjaqzw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2564
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ijcjaqzw binPath= "C:\Windows\SysWOW64\ijcjaqzw\siiixoum.exe /d\"C:\Users\Admin\AppData\Local\Temp\8e89363cc4699cf8b0cafdc315b3f7812bdfaed7d08fc12405d57819a578c409.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1700
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ijcjaqzw "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1044
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ijcjaqzw
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:892
- 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:2904

C:\Windows\SysWOW64\ijcjaqzw\siiixoum.exe
C:\Windows\SysWOW64\ijcjaqzw\siiixoum.exe /d"C:\Users\Admin\AppData\Local\Temp\8e89363cc4699cf8b0cafdc315b3f7812bdfaed7d08fc12405d57819a578c409.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2748
- 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:2968

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\siiixoum.exe

Filesize
12.4MB

MD5
35d8c3c8f194cc1931bccee74b91f55a

SHA1
d1112216d02694675a63faeb871b5a95ccf306f4

SHA256
cb6a7af1d9b7028f632517b8c50f958371393c85889449145e4a35e0060eda3d

SHA512
3d4f7ef700fe0a5fcf73bfd1601d738271c93366a8e20dd1b7969dfb6b3694ae97465002ec69a4ccf5bb6c554599173048d41dc454de6d63e818f85ed3a913d1

Download Submit
memory/2440-8-0x0000000000400000-0x0000000002B8F000-memory.dmp

Filesize
39.6MB

Download
memory/2440-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2440-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2440-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2440-10-0x0000000002C30000-0x0000000002D30000-memory.dmp

Filesize
1024KB

Download
memory/2440-1-0x0000000002C30000-0x0000000002D30000-memory.dmp

Filesize
1024KB

Download
memory/2440-11-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2748-19-0x0000000000400000-0x0000000002B8F000-memory.dmp

Filesize
39.6MB

Download
memory/2968-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2968-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2968-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2968-12-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2968-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads