tofsee | e910c690fdd6944df35d0de3cbc5241ac2172dcf02d43b2ccc9f72470e7b37f0

Analysis

max time kernel
149s
max time network
146s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
30/08/2024, 23:19

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
3a115fc118d5b0933c8550da6125b78d4956e27f671c00945d0ad04d5839dab4.exe
Size 10.9MB
Sample240830-3baxessemp
SHA256 3a115fc118d5b0933c8550da6125b78d4956e27f671c00945d0ad04d5839dab4
MD5 2f0b4b4819d48ff7ba4dbeb258a93189
SHA1 98067909fa21b0bf107449206405ac8b13e5c776
SHA512 090e957459548ed42424f07cb387664bff76d0efcc5b36943339b909290696496738c0b4586f446df4f6c0f1aa4faccb6ad66aab404a8775e7146491b4cd16e1
SSDEEP 6144:HLmhaXrxJHCx7HdqAT7mvs/bNAk3B79NmVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV1:HLmhaXrxJHuHdPT1n9N
MD5 SHA1 SHA512 SSDEEP

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

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\rosidbsq = "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
2860	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\rosidbsq\ImagePath = "C:\\Windows\\SysWOW64\\rosidbsq\\etgcongs.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2868	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2792	etgcongs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2792 set thread context of 2868	2792	etgcongs.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2696	sc.exe
2692	sc.exe
2852	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	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3a115fc118d5b0933c8550da6125b78d4956e27f671c00945d0ad04d5839dab4.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	etgcongs.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1656 wrote to memory of 2408	1656	3a115fc118d5b0933c8550da6125b78d4956e27f671c00945d0ad04d5839dab4.exe	31
PID 1656 wrote to memory of 2408	1656	3a115fc118d5b0933c8550da6125b78d4956e27f671c00945d0ad04d5839dab4.exe	31
PID 1656 wrote to memory of 2408	1656	3a115fc118d5b0933c8550da6125b78d4956e27f671c00945d0ad04d5839dab4.exe	31
PID 1656 wrote to memory of 2408	1656	3a115fc118d5b0933c8550da6125b78d4956e27f671c00945d0ad04d5839dab4.exe	31
PID 1656 wrote to memory of 2748	1656	3a115fc118d5b0933c8550da6125b78d4956e27f671c00945d0ad04d5839dab4.exe	33
PID 1656 wrote to memory of 2748	1656	3a115fc118d5b0933c8550da6125b78d4956e27f671c00945d0ad04d5839dab4.exe	33
PID 1656 wrote to memory of 2748	1656	3a115fc118d5b0933c8550da6125b78d4956e27f671c00945d0ad04d5839dab4.exe	33
PID 1656 wrote to memory of 2748	1656	3a115fc118d5b0933c8550da6125b78d4956e27f671c00945d0ad04d5839dab4.exe	33
PID 1656 wrote to memory of 2692	1656	3a115fc118d5b0933c8550da6125b78d4956e27f671c00945d0ad04d5839dab4.exe	35
PID 1656 wrote to memory of 2692	1656	3a115fc118d5b0933c8550da6125b78d4956e27f671c00945d0ad04d5839dab4.exe	35
PID 1656 wrote to memory of 2692	1656	3a115fc118d5b0933c8550da6125b78d4956e27f671c00945d0ad04d5839dab4.exe	35
PID 1656 wrote to memory of 2692	1656	3a115fc118d5b0933c8550da6125b78d4956e27f671c00945d0ad04d5839dab4.exe	35
PID 1656 wrote to memory of 2852	1656	3a115fc118d5b0933c8550da6125b78d4956e27f671c00945d0ad04d5839dab4.exe	37
PID 1656 wrote to memory of 2852	1656	3a115fc118d5b0933c8550da6125b78d4956e27f671c00945d0ad04d5839dab4.exe	37
PID 1656 wrote to memory of 2852	1656	3a115fc118d5b0933c8550da6125b78d4956e27f671c00945d0ad04d5839dab4.exe	37
PID 1656 wrote to memory of 2852	1656	3a115fc118d5b0933c8550da6125b78d4956e27f671c00945d0ad04d5839dab4.exe	37
PID 1656 wrote to memory of 2696	1656	3a115fc118d5b0933c8550da6125b78d4956e27f671c00945d0ad04d5839dab4.exe	39
PID 1656 wrote to memory of 2696	1656	3a115fc118d5b0933c8550da6125b78d4956e27f671c00945d0ad04d5839dab4.exe	39
PID 1656 wrote to memory of 2696	1656	3a115fc118d5b0933c8550da6125b78d4956e27f671c00945d0ad04d5839dab4.exe	39
PID 1656 wrote to memory of 2696	1656	3a115fc118d5b0933c8550da6125b78d4956e27f671c00945d0ad04d5839dab4.exe	39
PID 1656 wrote to memory of 2860	1656	3a115fc118d5b0933c8550da6125b78d4956e27f671c00945d0ad04d5839dab4.exe	42
PID 1656 wrote to memory of 2860	1656	3a115fc118d5b0933c8550da6125b78d4956e27f671c00945d0ad04d5839dab4.exe	42
PID 1656 wrote to memory of 2860	1656	3a115fc118d5b0933c8550da6125b78d4956e27f671c00945d0ad04d5839dab4.exe	42
PID 1656 wrote to memory of 2860	1656	3a115fc118d5b0933c8550da6125b78d4956e27f671c00945d0ad04d5839dab4.exe	42
PID 2792 wrote to memory of 2868	2792	etgcongs.exe	44
PID 2792 wrote to memory of 2868	2792	etgcongs.exe	44
PID 2792 wrote to memory of 2868	2792	etgcongs.exe	44
PID 2792 wrote to memory of 2868	2792	etgcongs.exe	44
PID 2792 wrote to memory of 2868	2792	etgcongs.exe	44
PID 2792 wrote to memory of 2868	2792	etgcongs.exe	44

C:\Users\Admin\AppData\Local\Temp\3a115fc118d5b0933c8550da6125b78d4956e27f671c00945d0ad04d5839dab4.exe
"C:\Users\Admin\AppData\Local\Temp\3a115fc118d5b0933c8550da6125b78d4956e27f671c00945d0ad04d5839dab4.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1656
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rosidbsq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2408
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\etgcongs.exe" C:\Windows\SysWOW64\rosidbsq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2748
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create rosidbsq binPath= "C:\Windows\SysWOW64\rosidbsq\etgcongs.exe /d\"C:\Users\Admin\AppData\Local\Temp\3a115fc118d5b0933c8550da6125b78d4956e27f671c00945d0ad04d5839dab4.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2692
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description rosidbsq "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2852
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start rosidbsq
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2696
- 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:2860

C:\Windows\SysWOW64\rosidbsq\etgcongs.exe
C:\Windows\SysWOW64\rosidbsq\etgcongs.exe /d"C:\Users\Admin\AppData\Local\Temp\3a115fc118d5b0933c8550da6125b78d4956e27f671c00945d0ad04d5839dab4.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2792
- 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:2868

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

etgcongs.exe

Path C:\Users\Admin\AppData\Local\Temp\etgcongs.exe
Size 10.8MB
SHA256 6e89d455647ce13b5c6970904f53fa51c4670b86130800a2a3252094e0442d72
MD5 aa1040da286bf3d7270780ad18c1093f
SHA1 21388d0a9d3f0f1bc58cc03d63879aae2453a35a
SHA512 6c677d21f33e15d931cd7a0888d0e391a20b54dcefee4182facad415c30234d5ad3206aa602702fb806ae8a133a8350995b8bf99263a3265f2a2f4ef73cbcd44
SSDEEP 6144:pLmhaXrxJHCx7HdqAT7mvs/bNAk3B79NmVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVZ:pLmhaXrxJHuHdPT1n9N
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1656-8-0x0000000000400000-0x0000000000878000-memory.dmp

Download

memory/1656-3-0x0000000000400000-0x0000000000415000-memory.dmp

Download

memory/1656-2-0x0000000000020000-0x0000000000033000-memory.dmp

Download

memory/1656-10-0x0000000000400000-0x0000000000415000-memory.dmp

Download

memory/1656-9-0x0000000000020000-0x0000000000033000-memory.dmp

Download

memory/1656-1-0x0000000000920000-0x0000000000A20000-memory.dmp

Download

memory/2792-16-0x0000000000400000-0x0000000000878000-memory.dmp

Download

memory/2868-14-0x0000000000080000-0x0000000000095000-memory.dmp

Download

memory/2868-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Download

memory/2868-11-0x0000000000080000-0x0000000000095000-memory.dmp

Download

memory/2868-17-0x0000000000080000-0x0000000000095000-memory.dmp

Download

memory/2868-18-0x0000000000080000-0x0000000000095000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads