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
3328	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\wjmpytir\ImagePath = "C:\\Windows\\SysWOW64\\wjmpytir\\kwiqqbqy.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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe

Deletes itself 1 IoCs

pid	Process
4924	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4444	kwiqqbqy.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4444 set thread context of 4924	4444	kwiqqbqy.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
4660	sc.exe
2604	sc.exe
3808	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
4112	5088	WerFault.exe	81
2176	4444	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.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	kwiqqbqy.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 5088 wrote to memory of 1740	5088	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe	82
PID 5088 wrote to memory of 1740	5088	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe	82
PID 5088 wrote to memory of 1740	5088	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe	82
PID 5088 wrote to memory of 4280	5088	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe	84
PID 5088 wrote to memory of 4280	5088	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe	84
PID 5088 wrote to memory of 4280	5088	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe	84
PID 5088 wrote to memory of 4660	5088	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe	86
PID 5088 wrote to memory of 4660	5088	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe	86
PID 5088 wrote to memory of 4660	5088	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe	86
PID 5088 wrote to memory of 2604	5088	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe	88
PID 5088 wrote to memory of 2604	5088	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe	88
PID 5088 wrote to memory of 2604	5088	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe	88
PID 5088 wrote to memory of 3808	5088	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe	90
PID 5088 wrote to memory of 3808	5088	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe	90
PID 5088 wrote to memory of 3808	5088	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe	90
PID 5088 wrote to memory of 3328	5088	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe	93
PID 5088 wrote to memory of 3328	5088	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe	93
PID 5088 wrote to memory of 3328	5088	d0a0ca092838272e6388908e3add4baec96a62c7e79dc60dad9116fe77f7cdca.exe	93
PID 4444 wrote to memory of 4924	4444	kwiqqbqy.exe	98
PID 4444 wrote to memory of 4924	4444	kwiqqbqy.exe	98
PID 4444 wrote to memory of 4924	4444	kwiqqbqy.exe	98
PID 4444 wrote to memory of 4924	4444	kwiqqbqy.exe	98
PID 4444 wrote to memory of 4924	4444	kwiqqbqy.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:5088
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wjmpytir\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1740
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kwiqqbqy.exe" C:\Windows\SysWOW64\wjmpytir\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4280
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create wjmpytir binPath= "C:\Windows\SysWOW64\wjmpytir\kwiqqbqy.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:4660
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description wjmpytir "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2604
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start wjmpytir
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3808
- 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:3328
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5088 -s 1176
  2⤵
  - Program crash
  PID:4112

C:\Windows\SysWOW64\wjmpytir\kwiqqbqy.exe
C:\Windows\SysWOW64\wjmpytir\kwiqqbqy.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:4444
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4924
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4444 -s 508
  2⤵
  - Program crash
  PID:2176

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 5088 -ip 5088
1⤵
PID:2064

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 4444 -ip 4444
1⤵
PID:1324

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\kwiqqbqy.exe

Filesize
12.7MB

MD5
88ef740bf35813ce80f4dafed8de63b7

SHA1
63615532c09aa6670d2fe7c2e3d184bbf7fb1e5d

SHA256
375baba6b1b6547e0b28dfb4fc628ca7c61343c175cb856986d46d47f755fa53

SHA512
3440bc3d610b1fb050c46f0d6bbc027ea427806af1f30de9d39cc60636a4e5068933248fdde6dd74041fd545c811ed68a019ca79f7f126c63d6729227a3aac1d

Download Submit
memory/4444-13-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4444-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4444-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4444-18-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4924-14-0x0000000000530000-0x0000000000545000-memory.dmp

Filesize
84KB

Download
memory/4924-16-0x0000000000530000-0x0000000000545000-memory.dmp

Filesize
84KB

Download
memory/4924-17-0x0000000000530000-0x0000000000545000-memory.dmp

Filesize
84KB

Download
memory/5088-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5088-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/5088-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/5088-8-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5088-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5088-1-0x0000000000520000-0x0000000000620000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads