tofsee | dbf34555e73b3fc324dce63b0c7dcedfe1b2a243f122d04eaa6d67bcfef30f91

General

Target

e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe
Size

12.2MB
MD5

8976781b9e1d6f794b30de6a350d5d4c
SHA1

3a1c95ac27d57dbc147ffda590c9e6645a402619
SHA256

e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8
SHA512

f98d91c0b7c1f2fe4bf777a7e850453710c5dd0129daa8b5bd2e94c689cf597424b2d87201068d73534dc794ffd145540888dfa84b9ac67b9a8c354b1c0be5b8
SSDEEP

12288:MQ50bBoofipGZdIjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjH:MQTooy

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

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
4728	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\lrrvogaa\ImagePath = "C:\\Windows\\SysWOW64\\lrrvogaa\\xjqkpviq.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-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe

Deletes itself 1 IoCs

pid	Process
884	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4756	xjqkpviq.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4756 set thread context of 884	4756	xjqkpviq.exe	106

Launches sc.exe 3 IoCs

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

pid	Process
3388	sc.exe
1376	sc.exe
3480	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
4240	3932	WerFault.exe	82
2412	4756	WerFault.exe	100

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	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	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xjqkpviq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3932 wrote to memory of 2676	3932	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	86
PID 3932 wrote to memory of 2676	3932	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	86
PID 3932 wrote to memory of 2676	3932	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	86
PID 3932 wrote to memory of 2952	3932	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	88
PID 3932 wrote to memory of 2952	3932	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	88
PID 3932 wrote to memory of 2952	3932	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	88
PID 3932 wrote to memory of 3480	3932	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	92
PID 3932 wrote to memory of 3480	3932	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	92
PID 3932 wrote to memory of 3480	3932	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	92
PID 3932 wrote to memory of 3388	3932	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	94
PID 3932 wrote to memory of 3388	3932	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	94
PID 3932 wrote to memory of 3388	3932	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	94
PID 3932 wrote to memory of 1376	3932	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	98
PID 3932 wrote to memory of 1376	3932	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	98
PID 3932 wrote to memory of 1376	3932	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	98
PID 3932 wrote to memory of 4728	3932	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	101
PID 3932 wrote to memory of 4728	3932	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	101
PID 3932 wrote to memory of 4728	3932	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	101
PID 4756 wrote to memory of 884	4756	xjqkpviq.exe	106
PID 4756 wrote to memory of 884	4756	xjqkpviq.exe	106
PID 4756 wrote to memory of 884	4756	xjqkpviq.exe	106
PID 4756 wrote to memory of 884	4756	xjqkpviq.exe	106
PID 4756 wrote to memory of 884	4756	xjqkpviq.exe	106

C:\Users\Admin\AppData\Local\Temp\e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe
"C:\Users\Admin\AppData\Local\Temp\e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3932
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lrrvogaa\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2676
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xjqkpviq.exe" C:\Windows\SysWOW64\lrrvogaa\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2952
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create lrrvogaa binPath= "C:\Windows\SysWOW64\lrrvogaa\xjqkpviq.exe /d\"C:\Users\Admin\AppData\Local\Temp\e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3480
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description lrrvogaa "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3388
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start lrrvogaa
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1376
- 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:4728
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3932 -s 788
  2⤵
  - Program crash
  PID:4240

C:\Windows\SysWOW64\lrrvogaa\xjqkpviq.exe
C:\Windows\SysWOW64\lrrvogaa\xjqkpviq.exe /d"C:\Users\Admin\AppData\Local\Temp\e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4756
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:884
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4756 -s 512
  2⤵
  - Program crash
  PID:2412

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3932 -ip 3932
1⤵
PID:4788

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4756 -ip 4756
1⤵
PID:2440

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\xjqkpviq.exe

Filesize
14.9MB

MD5
548deaa17ff971afca14bcab71f38799

SHA1
c83dff36fb3843f05ebaba8085d28cc27dfd7306

SHA256
4138e5b01aa6d131f9f6e6b279151694b4470cd7c6213c3296c1775b1fa4a24d

SHA512
8752e3f2fce6af2a556f5b2e94d02bb2caffb05fa06c61c3aff57debce37b1058493e37e1f986ca036683c1802b03abc5068acabdfdf443b2ac0470a068071e8

Download Submit
memory/884-11-0x0000000001200000-0x0000000001215000-memory.dmp

Filesize
84KB

Download
memory/884-16-0x0000000001200000-0x0000000001215000-memory.dmp

Filesize
84KB

Download
memory/884-14-0x0000000001200000-0x0000000001215000-memory.dmp

Filesize
84KB

Download
memory/3932-8-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/3932-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3932-1-0x0000000000BD0000-0x0000000000CD0000-memory.dmp

Filesize
1024KB

Download
memory/3932-9-0x0000000000CD0000-0x0000000000CE3000-memory.dmp

Filesize
76KB

Download
memory/3932-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3932-2-0x0000000000CD0000-0x0000000000CE3000-memory.dmp

Filesize
76KB

Download
memory/4756-15-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/4756-12-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/4756-18-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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