tofsee | 4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c

General

Target

4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe
Size

10.4MB
MD5

154abc820d003af3ec2b3964df199e18
SHA1

0f6ac12b415c34330a1bc558457aae5600fb09f4
SHA256

4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c
SHA512

242bcc4358ca4d7872bbd517ab9879e354f97024b720cf77bf5e86f51af5c2799855c5581b384ffa22a45a9f95ba5a3e028fcb3ce4d68e79c6107f5ff1b2e779
SSDEEP

49152:ovqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqo:oL

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
2956	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\ndryjrna\ImagePath = "C:\\Windows\\SysWOW64\\ndryjrna\\wbayouds.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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe

Deletes itself 1 IoCs

pid	Process
1964	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1836	wbayouds.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1836 set thread context of 1964	1836	wbayouds.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
2080	sc.exe
4364	sc.exe
3800	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
3420	1028	WerFault.exe	82
3156	1836	WerFault.exe	94

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	netsh.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	wbayouds.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1028 wrote to memory of 3828	1028	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	83
PID 1028 wrote to memory of 3828	1028	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	83
PID 1028 wrote to memory of 3828	1028	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	83
PID 1028 wrote to memory of 3912	1028	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	85
PID 1028 wrote to memory of 3912	1028	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	85
PID 1028 wrote to memory of 3912	1028	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	85
PID 1028 wrote to memory of 2080	1028	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	88
PID 1028 wrote to memory of 2080	1028	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	88
PID 1028 wrote to memory of 2080	1028	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	88
PID 1028 wrote to memory of 4364	1028	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	90
PID 1028 wrote to memory of 4364	1028	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	90
PID 1028 wrote to memory of 4364	1028	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	90
PID 1028 wrote to memory of 3800	1028	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	92
PID 1028 wrote to memory of 3800	1028	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	92
PID 1028 wrote to memory of 3800	1028	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	92
PID 1028 wrote to memory of 2956	1028	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	95
PID 1028 wrote to memory of 2956	1028	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	95
PID 1028 wrote to memory of 2956	1028	4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe	95
PID 1836 wrote to memory of 1964	1836	wbayouds.exe	101
PID 1836 wrote to memory of 1964	1836	wbayouds.exe	101
PID 1836 wrote to memory of 1964	1836	wbayouds.exe	101
PID 1836 wrote to memory of 1964	1836	wbayouds.exe	101
PID 1836 wrote to memory of 1964	1836	wbayouds.exe	101

C:\Users\Admin\AppData\Local\Temp\4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe
"C:\Users\Admin\AppData\Local\Temp\4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1028
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ndryjrna\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3828
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wbayouds.exe" C:\Windows\SysWOW64\ndryjrna\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3912
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ndryjrna binPath= "C:\Windows\SysWOW64\ndryjrna\wbayouds.exe /d\"C:\Users\Admin\AppData\Local\Temp\4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2080
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ndryjrna "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4364
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ndryjrna
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3800
- 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:2956
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1028 -s 1036
  2⤵
  - Program crash
  PID:3420

C:\Windows\SysWOW64\ndryjrna\wbayouds.exe
C:\Windows\SysWOW64\ndryjrna\wbayouds.exe /d"C:\Users\Admin\AppData\Local\Temp\4162612f5eed47b22fbabf544e31fb1c9991f1204a2d16b5672d67175edac82c.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1836
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1964
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1836 -s 516
  2⤵
  - Program crash
  PID:3156

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1028 -ip 1028
1⤵
PID:4604

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 1836 -ip 1836
1⤵
PID:2004

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
11.9MB

MD5
f4984a9ba5f4a07b34a5d2120137aa68

SHA1
202d6988d92bfaf4083656e826d525a2cf831e65

SHA256
83f8f34700871f7518d319949c6a2cf55e75bada58138e414e1718d2d529e233

SHA512
6fd12e13189173d7c7a9b6d1f1a7d701f7c595ed607b1392d0345ea502ea6fd7681b3b34f9e2180e0aa6ad23db21fe091ecf6bc14a486026b2f6af1dcc91f552

Download Submit
memory/1028-1-0x00000000018C0000-0x00000000019C0000-memory.dmp

Filesize
1024KB

Download
memory/1028-2-0x0000000001860000-0x0000000001873000-memory.dmp

Filesize
76KB

Download
memory/1028-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1028-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1028-9-0x0000000001860000-0x0000000001873000-memory.dmp

Filesize
76KB

Download
memory/1028-8-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/1836-15-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/1836-16-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/1964-11-0x0000000001030000-0x0000000001045000-memory.dmp

Filesize
84KB

Download
memory/1964-14-0x0000000001030000-0x0000000001045000-memory.dmp

Filesize
84KB

Download
memory/1964-13-0x0000000001030000-0x0000000001045000-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