tofsee | d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca

General

Target

d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe
Size

280KB
MD5

1efcf9901e3eccbd59173a37452e238b
SHA1

9585897fce73f306b95a2c088483438893b62853
SHA256

d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca
SHA512

5eebeec99f6aaa67729e5a1dc19a5a7dccc9b7f47e4f721df8440c071cfa95698d4321eefb9faee4e21fadda9ea6f60c14030b1818450f11dd2bdd833a408cfd
SSDEEP

6144:DU6BbccF0QC7hSIZ34p4rIlROhxxpeTr/ekIw:3BbLF0d7hWGrICzxp6L

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
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
1940	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\dykabxxz\ImagePath = "C:\\Windows\\SysWOW64\\dykabxxz\\hfugawhx.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	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe

Deletes itself 1 IoCs

pid	Process
3116	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3648	hfugawhx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3648 set thread context of 3116	3648	hfugawhx.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
3176	sc.exe
2132	sc.exe
1980	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
1492	2332	WerFault.exe	81
4276	3648	WerFault.exe	92

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	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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	hfugawhx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2332 wrote to memory of 5064	2332	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe	82
PID 2332 wrote to memory of 5064	2332	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe	82
PID 2332 wrote to memory of 5064	2332	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe	82
PID 2332 wrote to memory of 4120	2332	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe	84
PID 2332 wrote to memory of 4120	2332	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe	84
PID 2332 wrote to memory of 4120	2332	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe	84
PID 2332 wrote to memory of 1980	2332	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe	86
PID 2332 wrote to memory of 1980	2332	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe	86
PID 2332 wrote to memory of 1980	2332	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe	86
PID 2332 wrote to memory of 3176	2332	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe	88
PID 2332 wrote to memory of 3176	2332	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe	88
PID 2332 wrote to memory of 3176	2332	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe	88
PID 2332 wrote to memory of 2132	2332	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe	90
PID 2332 wrote to memory of 2132	2332	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe	90
PID 2332 wrote to memory of 2132	2332	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe	90
PID 2332 wrote to memory of 1940	2332	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe	93
PID 2332 wrote to memory of 1940	2332	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe	93
PID 2332 wrote to memory of 1940	2332	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe	93
PID 3648 wrote to memory of 3116	3648	hfugawhx.exe	98
PID 3648 wrote to memory of 3116	3648	hfugawhx.exe	98
PID 3648 wrote to memory of 3116	3648	hfugawhx.exe	98
PID 3648 wrote to memory of 3116	3648	hfugawhx.exe	98
PID 3648 wrote to memory of 3116	3648	hfugawhx.exe	98

C:\Users\Admin\AppData\Local\Temp\d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe
"C:\Users\Admin\AppData\Local\Temp\d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2332
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dykabxxz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5064
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\hfugawhx.exe" C:\Windows\SysWOW64\dykabxxz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4120
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create dykabxxz binPath= "C:\Windows\SysWOW64\dykabxxz\hfugawhx.exe /d\"C:\Users\Admin\AppData\Local\Temp\d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1980
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description dykabxxz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3176
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start dykabxxz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2132
- 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:1940
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2332 -s 664
  2⤵
  - Program crash
  PID:1492

C:\Windows\SysWOW64\dykabxxz\hfugawhx.exe
C:\Windows\SysWOW64\dykabxxz\hfugawhx.exe /d"C:\Users\Admin\AppData\Local\Temp\d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3648
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3116
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3648 -s 512
  2⤵
  - Program crash
  PID:4276

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2332 -ip 2332
1⤵
PID:1264

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 3648 -ip 3648
1⤵
PID:1952

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\hfugawhx.exe

Filesize
10.2MB

MD5
a01daafa82e86082aa5332f8b420b6a6

SHA1
3f1b03776f8caa7408a69359c54a4422c3b4c66b

SHA256
78b51ca47af33bad33981257144667808b04f33fe3a834d85a7ae6a83b83687c

SHA512
1d3cb52cb65707866b56d158f91ed5af606a4e7ea0181f2fd25fe56e03ea34cfb703e1b01fbe594bc3c51a8d37b9ab487436811afc6f438ca14e2f9bf268631c

Download Submit
memory/2332-8-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2332-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2332-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2332-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2332-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2332-1-0x0000000000820000-0x0000000000920000-memory.dmp

Filesize
1024KB

Download
memory/3116-14-0x0000000000570000-0x0000000000585000-memory.dmp

Filesize
84KB

Download
memory/3116-16-0x0000000000570000-0x0000000000585000-memory.dmp

Filesize
84KB

Download
memory/3116-17-0x0000000000570000-0x0000000000585000-memory.dmp

Filesize
84KB

Download
memory/3648-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3648-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3648-13-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3648-18-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads