tofsee | 2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889

General

Target

2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe
Size

10.1MB
MD5

0e5a9c35b3d357763c7a52db54daf211
SHA1

65bd31bc2fc54a359e9eb1a7abb03bc71d2e7c2b
SHA256

2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889
SHA512

3ec7ba172ed8fe2e9edd0c024b92ff00a9deb619ea16cff28ff7a49eacbd0b9139c03103da2d163d1305221b5016f181dd871cebdce75bfd9fed8586486e1520
SSDEEP

49152:pkHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH/:q

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

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
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
4376	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\tjkujgjk\ImagePath = "C:\\Windows\\SysWOW64\\tjkujgjk\\qjukvsle.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe

Deletes itself 1 IoCs

pid	Process
4812	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
996	qjukvsle.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 996 set thread context of 4812	996	qjukvsle.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
3212	sc.exe
4832	sc.exe
3280	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3368	2988	WerFault.exe	81
2864	996	WerFault.exe	95

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	sc.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	qjukvsle.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2988 wrote to memory of 4180	2988	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	82
PID 2988 wrote to memory of 4180	2988	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	82
PID 2988 wrote to memory of 4180	2988	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	82
PID 2988 wrote to memory of 4136	2988	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	84
PID 2988 wrote to memory of 4136	2988	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	84
PID 2988 wrote to memory of 4136	2988	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	84
PID 2988 wrote to memory of 3212	2988	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	86
PID 2988 wrote to memory of 3212	2988	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	86
PID 2988 wrote to memory of 3212	2988	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	86
PID 2988 wrote to memory of 4832	2988	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	90
PID 2988 wrote to memory of 4832	2988	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	90
PID 2988 wrote to memory of 4832	2988	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	90
PID 2988 wrote to memory of 3280	2988	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	92
PID 2988 wrote to memory of 3280	2988	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	92
PID 2988 wrote to memory of 3280	2988	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	92
PID 2988 wrote to memory of 4376	2988	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	97
PID 2988 wrote to memory of 4376	2988	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	97
PID 2988 wrote to memory of 4376	2988	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	97
PID 996 wrote to memory of 4812	996	qjukvsle.exe	102
PID 996 wrote to memory of 4812	996	qjukvsle.exe	102
PID 996 wrote to memory of 4812	996	qjukvsle.exe	102
PID 996 wrote to memory of 4812	996	qjukvsle.exe	102
PID 996 wrote to memory of 4812	996	qjukvsle.exe	102

C:\Users\Admin\AppData\Local\Temp\2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe
"C:\Users\Admin\AppData\Local\Temp\2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2988
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tjkujgjk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4180
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\qjukvsle.exe" C:\Windows\SysWOW64\tjkujgjk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4136
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create tjkujgjk binPath= "C:\Windows\SysWOW64\tjkujgjk\qjukvsle.exe /d\"C:\Users\Admin\AppData\Local\Temp\2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3212
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description tjkujgjk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4832
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start tjkujgjk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3280
- 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:4376
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2988 -s 1288
  2⤵
  - Program crash
  PID:3368

C:\Windows\SysWOW64\tjkujgjk\qjukvsle.exe
C:\Windows\SysWOW64\tjkujgjk\qjukvsle.exe /d"C:\Users\Admin\AppData\Local\Temp\2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:996
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4812
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 996 -s 516
  2⤵
  - Program crash
  PID:2864

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 2988 -ip 2988
1⤵
PID:3008

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 996 -ip 996
1⤵
PID:4188

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
13.4MB

MD5
e68b05ca22cf8e96a4f248a837e07ab2

SHA1
86820d333bebe063d7707a0c540e52b4e232fb60

SHA256
ca771ae63264aea84c939b0696a5ea6d8b499f7037f98ce6d3bcc70a5606ac1b

SHA512
22a6a1dd19c3c9861430c0958d5c46ca1f1b213a117315d6026954f07b8449cd0e76c69ef4e85b493b22bc8cde2dc1f03b2afba9024f7d9cb66ea251d04321d5

Download Submit
memory/996-11-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/996-16-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/2988-1-0x0000000000B70000-0x0000000000C70000-memory.dmp

Filesize
1024KB

Download
memory/2988-2-0x0000000000B30000-0x0000000000B43000-memory.dmp

Filesize
76KB

Download
memory/2988-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2988-8-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/2988-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2988-9-0x0000000000B30000-0x0000000000B43000-memory.dmp

Filesize
76KB

Download
memory/4812-12-0x0000000000560000-0x0000000000575000-memory.dmp

Filesize
84KB

Download
memory/4812-14-0x0000000000560000-0x0000000000575000-memory.dmp

Filesize
84KB

Download
memory/4812-15-0x0000000000560000-0x0000000000575000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads