tofsee | 03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0

General

Target

03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe
Size

12.9MB
MD5

8556b989b136705da62e8181b8e1b066
SHA1

8ab93dd9d5bd43efb00c8d027f08ecd5d1adf96b
SHA256

03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0
SHA512

e45b2343243e9a73f6edbdd75ace557bd33b887adc29408378d606246227f6b4ed5d006b14b8a37c62a165bdccafa46271a86aa1cb138573066553dda5159cf7
SSDEEP

49152:ukHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHP:N

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
3956	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\wfnqivgt\ImagePath = "C:\\Windows\\SysWOW64\\wfnqivgt\\tmameyan.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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe

Deletes itself 1 IoCs

pid	Process
2512	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1504	tmameyan.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1504 set thread context of 2512	1504	tmameyan.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
1160	sc.exe
920	sc.exe
4812	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1048	4488	WerFault.exe	81
964	1504	WerFault.exe	96

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	tmameyan.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4488 wrote to memory of 1944	4488	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	82
PID 4488 wrote to memory of 1944	4488	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	82
PID 4488 wrote to memory of 1944	4488	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	82
PID 4488 wrote to memory of 1492	4488	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	84
PID 4488 wrote to memory of 1492	4488	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	84
PID 4488 wrote to memory of 1492	4488	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	84
PID 4488 wrote to memory of 1160	4488	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	88
PID 4488 wrote to memory of 1160	4488	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	88
PID 4488 wrote to memory of 1160	4488	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	88
PID 4488 wrote to memory of 920	4488	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	90
PID 4488 wrote to memory of 920	4488	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	90
PID 4488 wrote to memory of 920	4488	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	90
PID 4488 wrote to memory of 4812	4488	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	94
PID 4488 wrote to memory of 4812	4488	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	94
PID 4488 wrote to memory of 4812	4488	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	94
PID 4488 wrote to memory of 3956	4488	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	97
PID 4488 wrote to memory of 3956	4488	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	97
PID 4488 wrote to memory of 3956	4488	03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe	97
PID 1504 wrote to memory of 2512	1504	tmameyan.exe	102
PID 1504 wrote to memory of 2512	1504	tmameyan.exe	102
PID 1504 wrote to memory of 2512	1504	tmameyan.exe	102
PID 1504 wrote to memory of 2512	1504	tmameyan.exe	102
PID 1504 wrote to memory of 2512	1504	tmameyan.exe	102

C:\Users\Admin\AppData\Local\Temp\03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe
"C:\Users\Admin\AppData\Local\Temp\03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4488
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wfnqivgt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1944
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tmameyan.exe" C:\Windows\SysWOW64\wfnqivgt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1492
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create wfnqivgt binPath= "C:\Windows\SysWOW64\wfnqivgt\tmameyan.exe /d\"C:\Users\Admin\AppData\Local\Temp\03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1160
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description wfnqivgt "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:920
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start wfnqivgt
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4812
- 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:3956
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4488 -s 1204
  2⤵
  - Program crash
  PID:1048

C:\Windows\SysWOW64\wfnqivgt\tmameyan.exe
C:\Windows\SysWOW64\wfnqivgt\tmameyan.exe /d"C:\Users\Admin\AppData\Local\Temp\03a239c50ad79fc193158e7b7750bc9c950ff2efa27003f80c54993a4605c1b0.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1504
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2512
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1504 -s 512
  2⤵
  - Program crash
  PID:964

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4488 -ip 4488
1⤵
PID:4300

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1504 -ip 1504
1⤵
PID:3280

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\tmameyan.exe

Filesize
11.1MB

MD5
3e0818655c2351738b59a860500a4311

SHA1
cb85e12878a1f1334269edb15c03723814ba4469

SHA256
c4812e6328c35045aee2ab024cb7b1735b7c0909305058daa6cb42ce5ecc02a9

SHA512
7792803257d34060e1401a89f07b27a825b7edd1be23c837d729d9d49e33166d4a216e6954168801c59a08aa1f551010a2821d5998fd71c431f3724ca95cab52

Download Submit
memory/1504-11-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/1504-16-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/2512-12-0x0000000000270000-0x0000000000285000-memory.dmp

Filesize
84KB

Download
memory/2512-14-0x0000000000270000-0x0000000000285000-memory.dmp

Filesize
84KB

Download
memory/2512-15-0x0000000000270000-0x0000000000285000-memory.dmp

Filesize
84KB

Download
memory/4488-1-0x0000000000930000-0x0000000000A30000-memory.dmp

Filesize
1024KB

Download
memory/4488-2-0x00000000008F0000-0x0000000000903000-memory.dmp

Filesize
76KB

Download
memory/4488-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4488-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4488-9-0x00000000008F0000-0x0000000000903000-memory.dmp

Filesize
76KB

Download
memory/4488-8-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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