tofsee | 01a3cf94ba0e78a542e66b981301ea8ebf542d1098347b95bcfc212dea05df5e

General

Target

01a3cf94ba0e78a542e66b981301ea8ebf542d1098347b95bcfc212dea05df5e.exe
Size

240KB
MD5

69b2a19e75554cb40fbc387b8d8e4782
SHA1

830d8bad91fe3d6d0265563893daff8760a7ea56
SHA256

01a3cf94ba0e78a542e66b981301ea8ebf542d1098347b95bcfc212dea05df5e
SHA512

5a407594131f9b74fdbebf25ce892e9693e98b555557b3bc84d7489d910760f632d098cef878c5ec3fafe05457a544c0cff31f2c09a5967631bd6dfc6342d6b4
SSDEEP

3072:VqP++Vt8ew8DIQsUCbrR0aL77yf5t86FrKl3c+8JZdkfmwpFcvP:VqGPedDtKbr8GlMnXgmpH

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
4892	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\zqqrtyer\ImagePath = "C:\\Windows\\SysWOW64\\zqqrtyer\\qxjwfstn.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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	01a3cf94ba0e78a542e66b981301ea8ebf542d1098347b95bcfc212dea05df5e.exe

Deletes itself 1 IoCs

pid	Process
664	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2212	qxjwfstn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2212 set thread context of 664	2212	qxjwfstn.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
1516	sc.exe
2276	sc.exe
1672	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
2172	1476	WerFault.exe	81
1884	2212	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	01a3cf94ba0e78a542e66b981301ea8ebf542d1098347b95bcfc212dea05df5e.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	qxjwfstn.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1476 wrote to memory of 2816	1476	01a3cf94ba0e78a542e66b981301ea8ebf542d1098347b95bcfc212dea05df5e.exe	82
PID 1476 wrote to memory of 2816	1476	01a3cf94ba0e78a542e66b981301ea8ebf542d1098347b95bcfc212dea05df5e.exe	82
PID 1476 wrote to memory of 2816	1476	01a3cf94ba0e78a542e66b981301ea8ebf542d1098347b95bcfc212dea05df5e.exe	82
PID 1476 wrote to memory of 2508	1476	01a3cf94ba0e78a542e66b981301ea8ebf542d1098347b95bcfc212dea05df5e.exe	84
PID 1476 wrote to memory of 2508	1476	01a3cf94ba0e78a542e66b981301ea8ebf542d1098347b95bcfc212dea05df5e.exe	84
PID 1476 wrote to memory of 2508	1476	01a3cf94ba0e78a542e66b981301ea8ebf542d1098347b95bcfc212dea05df5e.exe	84
PID 1476 wrote to memory of 1672	1476	01a3cf94ba0e78a542e66b981301ea8ebf542d1098347b95bcfc212dea05df5e.exe	86
PID 1476 wrote to memory of 1672	1476	01a3cf94ba0e78a542e66b981301ea8ebf542d1098347b95bcfc212dea05df5e.exe	86
PID 1476 wrote to memory of 1672	1476	01a3cf94ba0e78a542e66b981301ea8ebf542d1098347b95bcfc212dea05df5e.exe	86
PID 1476 wrote to memory of 1516	1476	01a3cf94ba0e78a542e66b981301ea8ebf542d1098347b95bcfc212dea05df5e.exe	88
PID 1476 wrote to memory of 1516	1476	01a3cf94ba0e78a542e66b981301ea8ebf542d1098347b95bcfc212dea05df5e.exe	88
PID 1476 wrote to memory of 1516	1476	01a3cf94ba0e78a542e66b981301ea8ebf542d1098347b95bcfc212dea05df5e.exe	88
PID 1476 wrote to memory of 2276	1476	01a3cf94ba0e78a542e66b981301ea8ebf542d1098347b95bcfc212dea05df5e.exe	90
PID 1476 wrote to memory of 2276	1476	01a3cf94ba0e78a542e66b981301ea8ebf542d1098347b95bcfc212dea05df5e.exe	90
PID 1476 wrote to memory of 2276	1476	01a3cf94ba0e78a542e66b981301ea8ebf542d1098347b95bcfc212dea05df5e.exe	90
PID 1476 wrote to memory of 4892	1476	01a3cf94ba0e78a542e66b981301ea8ebf542d1098347b95bcfc212dea05df5e.exe	93
PID 1476 wrote to memory of 4892	1476	01a3cf94ba0e78a542e66b981301ea8ebf542d1098347b95bcfc212dea05df5e.exe	93
PID 1476 wrote to memory of 4892	1476	01a3cf94ba0e78a542e66b981301ea8ebf542d1098347b95bcfc212dea05df5e.exe	93
PID 2212 wrote to memory of 664	2212	qxjwfstn.exe	98
PID 2212 wrote to memory of 664	2212	qxjwfstn.exe	98
PID 2212 wrote to memory of 664	2212	qxjwfstn.exe	98
PID 2212 wrote to memory of 664	2212	qxjwfstn.exe	98
PID 2212 wrote to memory of 664	2212	qxjwfstn.exe	98

C:\Users\Admin\AppData\Local\Temp\01a3cf94ba0e78a542e66b981301ea8ebf542d1098347b95bcfc212dea05df5e.exe
"C:\Users\Admin\AppData\Local\Temp\01a3cf94ba0e78a542e66b981301ea8ebf542d1098347b95bcfc212dea05df5e.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1476
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zqqrtyer\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2816
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\qxjwfstn.exe" C:\Windows\SysWOW64\zqqrtyer\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2508
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create zqqrtyer binPath= "C:\Windows\SysWOW64\zqqrtyer\qxjwfstn.exe /d\"C:\Users\Admin\AppData\Local\Temp\01a3cf94ba0e78a542e66b981301ea8ebf542d1098347b95bcfc212dea05df5e.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1672
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description zqqrtyer "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1516
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start zqqrtyer
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2276
- 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:4892
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1476 -s 656
  2⤵
  - Program crash
  PID:2172

C:\Windows\SysWOW64\zqqrtyer\qxjwfstn.exe
C:\Windows\SysWOW64\zqqrtyer\qxjwfstn.exe /d"C:\Users\Admin\AppData\Local\Temp\01a3cf94ba0e78a542e66b981301ea8ebf542d1098347b95bcfc212dea05df5e.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2212
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:664
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2212 -s 532
  2⤵
  - Program crash
  PID:1884

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 1476 -ip 1476
1⤵
PID:2440

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 2212 -ip 2212
1⤵
PID:4196

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\qxjwfstn.exe

Filesize
14.2MB

MD5
5862923e6b2530e03f5090615fd1dc65

SHA1
830948449d83906e2ac9dd48df61043d2972a760

SHA256
66cccf169894a16984a6c17646109f7dffd13f738320b3815ae1c2402d1a4282

SHA512
a57bd697c84c1ded5d38de3490856832d124fee7ac7f0fcdc584cfc542d5b3732cae53347f5a026cf386dc7b14a72c2e0af4a62b6ade7fa9f86c2324fef9a2e5

Download Submit
memory/664-8-0x0000000000900000-0x0000000000915000-memory.dmp

Filesize
84KB

Download
memory/664-16-0x0000000000900000-0x0000000000915000-memory.dmp

Filesize
84KB

Download
memory/664-17-0x0000000000900000-0x0000000000915000-memory.dmp

Filesize
84KB

Download
memory/1476-1-0x0000000000AF0000-0x0000000000BF0000-memory.dmp

Filesize
1024KB

Download
memory/1476-2-0x0000000000AD0000-0x0000000000AE3000-memory.dmp

Filesize
76KB

Download
memory/1476-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1476-13-0x0000000000AD0000-0x0000000000AE3000-memory.dmp

Filesize
76KB

Download
memory/1476-14-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1476-12-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download
memory/2212-9-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download
memory/2212-11-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads