tofsee | e489ae6a1b51341c25c741850c4f6e6f82d8241d618b5a082c248788df3ba759

General

Target

d572033c59d050ae0a7b6cafa3728a7675721bff18f4087fee4e8d8692c0a974.exe
Size

10.9MB
MD5

00648d8195f97b68fb658c75f256f2b4
SHA1

e45eb357905049dbfe81ad64a87fe4158392aeab
SHA256

d572033c59d050ae0a7b6cafa3728a7675721bff18f4087fee4e8d8692c0a974
SHA512

d70b12a153aa790925c134c638a522190930fc701d6cd45aff119a292d4657c4084fcafb424093d248421e26f2dd728526759e7f93a49147fdec937f7c86923d
SSDEEP

196608:ITTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTX:

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
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
512	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\xsvliwqr\ImagePath = "C:\\Windows\\SysWOW64\\xsvliwqr\\xktqrwiv.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-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	d572033c59d050ae0a7b6cafa3728a7675721bff18f4087fee4e8d8692c0a974.exe

Deletes itself 1 IoCs

pid	Process
4860	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1844	xktqrwiv.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1844 set thread context of 4860	1844	xktqrwiv.exe	107

Launches sc.exe 3 IoCs

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

pid	Process
3208	sc.exe
4908	sc.exe
2548	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2036	4720	WerFault.exe	83
336	1844	WerFault.exe	101

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xktqrwiv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d572033c59d050ae0a7b6cafa3728a7675721bff18f4087fee4e8d8692c0a974.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	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4720 wrote to memory of 4292	4720	d572033c59d050ae0a7b6cafa3728a7675721bff18f4087fee4e8d8692c0a974.exe	87
PID 4720 wrote to memory of 4292	4720	d572033c59d050ae0a7b6cafa3728a7675721bff18f4087fee4e8d8692c0a974.exe	87
PID 4720 wrote to memory of 4292	4720	d572033c59d050ae0a7b6cafa3728a7675721bff18f4087fee4e8d8692c0a974.exe	87
PID 4720 wrote to memory of 4344	4720	d572033c59d050ae0a7b6cafa3728a7675721bff18f4087fee4e8d8692c0a974.exe	89
PID 4720 wrote to memory of 4344	4720	d572033c59d050ae0a7b6cafa3728a7675721bff18f4087fee4e8d8692c0a974.exe	89
PID 4720 wrote to memory of 4344	4720	d572033c59d050ae0a7b6cafa3728a7675721bff18f4087fee4e8d8692c0a974.exe	89
PID 4720 wrote to memory of 3208	4720	d572033c59d050ae0a7b6cafa3728a7675721bff18f4087fee4e8d8692c0a974.exe	93
PID 4720 wrote to memory of 3208	4720	d572033c59d050ae0a7b6cafa3728a7675721bff18f4087fee4e8d8692c0a974.exe	93
PID 4720 wrote to memory of 3208	4720	d572033c59d050ae0a7b6cafa3728a7675721bff18f4087fee4e8d8692c0a974.exe	93
PID 4720 wrote to memory of 4908	4720	d572033c59d050ae0a7b6cafa3728a7675721bff18f4087fee4e8d8692c0a974.exe	95
PID 4720 wrote to memory of 4908	4720	d572033c59d050ae0a7b6cafa3728a7675721bff18f4087fee4e8d8692c0a974.exe	95
PID 4720 wrote to memory of 4908	4720	d572033c59d050ae0a7b6cafa3728a7675721bff18f4087fee4e8d8692c0a974.exe	95
PID 4720 wrote to memory of 2548	4720	d572033c59d050ae0a7b6cafa3728a7675721bff18f4087fee4e8d8692c0a974.exe	99
PID 4720 wrote to memory of 2548	4720	d572033c59d050ae0a7b6cafa3728a7675721bff18f4087fee4e8d8692c0a974.exe	99
PID 4720 wrote to memory of 2548	4720	d572033c59d050ae0a7b6cafa3728a7675721bff18f4087fee4e8d8692c0a974.exe	99
PID 4720 wrote to memory of 512	4720	d572033c59d050ae0a7b6cafa3728a7675721bff18f4087fee4e8d8692c0a974.exe	102
PID 4720 wrote to memory of 512	4720	d572033c59d050ae0a7b6cafa3728a7675721bff18f4087fee4e8d8692c0a974.exe	102
PID 4720 wrote to memory of 512	4720	d572033c59d050ae0a7b6cafa3728a7675721bff18f4087fee4e8d8692c0a974.exe	102
PID 1844 wrote to memory of 4860	1844	xktqrwiv.exe	107
PID 1844 wrote to memory of 4860	1844	xktqrwiv.exe	107
PID 1844 wrote to memory of 4860	1844	xktqrwiv.exe	107
PID 1844 wrote to memory of 4860	1844	xktqrwiv.exe	107
PID 1844 wrote to memory of 4860	1844	xktqrwiv.exe	107

C:\Users\Admin\AppData\Local\Temp\d572033c59d050ae0a7b6cafa3728a7675721bff18f4087fee4e8d8692c0a974.exe
"C:\Users\Admin\AppData\Local\Temp\d572033c59d050ae0a7b6cafa3728a7675721bff18f4087fee4e8d8692c0a974.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4720
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xsvliwqr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4292
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xktqrwiv.exe" C:\Windows\SysWOW64\xsvliwqr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4344
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create xsvliwqr binPath= "C:\Windows\SysWOW64\xsvliwqr\xktqrwiv.exe /d\"C:\Users\Admin\AppData\Local\Temp\d572033c59d050ae0a7b6cafa3728a7675721bff18f4087fee4e8d8692c0a974.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3208
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description xsvliwqr "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4908
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start xsvliwqr
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2548
- 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:512
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4720 -s 1040
  2⤵
  - Program crash
  PID:2036

C:\Windows\SysWOW64\xsvliwqr\xktqrwiv.exe
C:\Windows\SysWOW64\xsvliwqr\xktqrwiv.exe /d"C:\Users\Admin\AppData\Local\Temp\d572033c59d050ae0a7b6cafa3728a7675721bff18f4087fee4e8d8692c0a974.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1844
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4860
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1844 -s 540
  2⤵
  - Program crash
  PID:336

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 4720 -ip 4720
1⤵
PID:1608

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 1844 -ip 1844
1⤵
PID:3084

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\xktqrwiv.exe

Filesize
10.9MB

MD5
74e3b0de67adbbcded843a7d4aee0ac3

SHA1
dc308af99574c51ac1dbcc9ec285f1a2331fc58c

SHA256
5dc9cd8529e09b0ef1f630d756f203d3f11b988a5cdf0029171b4dc29ad9a265

SHA512
c4a60c2fa3a693ac6fa2e7368736f15ae78a48011230efc9cbf4d5ed4b3a71358d67f8b9f17aaf2eef158a1b3caf7551dfb4abe89e3f53927f181fe40da3dee4

Download Submit
memory/1844-14-0x0000000000400000-0x00000000016BD000-memory.dmp

Filesize
18.7MB

Download
memory/1844-17-0x0000000000400000-0x00000000016BD000-memory.dmp

Filesize
18.7MB

Download
memory/4720-1-0x00000000016F0000-0x00000000017F0000-memory.dmp

Filesize
1024KB

Download
memory/4720-2-0x00000000032C0000-0x00000000032D3000-memory.dmp

Filesize
76KB

Download
memory/4720-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4720-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4720-9-0x00000000032C0000-0x00000000032D3000-memory.dmp

Filesize
76KB

Download
memory/4720-8-0x0000000000400000-0x00000000016BD000-memory.dmp

Filesize
18.7MB

Download
memory/4860-11-0x0000000000A40000-0x0000000000A55000-memory.dmp

Filesize
84KB

Download
memory/4860-13-0x0000000000A40000-0x0000000000A55000-memory.dmp

Filesize
84KB

Download
memory/4860-15-0x0000000000A40000-0x0000000000A55000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads