tofsee | fde1678345d5c44d4d4850402fad1ea7b0d509652258ae34cb98b0b234e64309

General

Target

fde1678345d5c44d4d4850402fad1ea7b0d509652258ae34cb98b0b234e64309.exe
Size

10.5MB
MD5

d86ffcc25b33e1567b2136d1ac2b4e85
SHA1

dd088c1b72bb1d8917655cc0c301f5c0fa74dafa
SHA256

fde1678345d5c44d4d4850402fad1ea7b0d509652258ae34cb98b0b234e64309
SHA512

8f9ad8a7d9a292019cbaea903dd2733fc1f51419ab051541cddc55e6ba8624042b2c73ea97107daaa695408a1ad3505a424d8114d14660fcc401e08587cbf4b6
SSDEEP

49152:IN5555555555555555555555555555555555555555555555555555555555555b:O

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
3168	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\pngieoih\ImagePath = "C:\\Windows\\SysWOW64\\pngieoih\\bhcfoxxs.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	fde1678345d5c44d4d4850402fad1ea7b0d509652258ae34cb98b0b234e64309.exe

Deletes itself 1 IoCs

pid	Process
3664	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2480	bhcfoxxs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2480 set thread context of 3664	2480	bhcfoxxs.exe	104

Launches sc.exe 3 IoCs

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

pid	Process
3756	sc.exe
4816	sc.exe
3236	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
2956	316	WerFault.exe	83
688	2480	WerFault.exe	98

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	fde1678345d5c44d4d4850402fad1ea7b0d509652258ae34cb98b0b234e64309.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	sc.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bhcfoxxs.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 316 wrote to memory of 1248	316	fde1678345d5c44d4d4850402fad1ea7b0d509652258ae34cb98b0b234e64309.exe	84
PID 316 wrote to memory of 1248	316	fde1678345d5c44d4d4850402fad1ea7b0d509652258ae34cb98b0b234e64309.exe	84
PID 316 wrote to memory of 1248	316	fde1678345d5c44d4d4850402fad1ea7b0d509652258ae34cb98b0b234e64309.exe	84
PID 316 wrote to memory of 4052	316	fde1678345d5c44d4d4850402fad1ea7b0d509652258ae34cb98b0b234e64309.exe	86
PID 316 wrote to memory of 4052	316	fde1678345d5c44d4d4850402fad1ea7b0d509652258ae34cb98b0b234e64309.exe	86
PID 316 wrote to memory of 4052	316	fde1678345d5c44d4d4850402fad1ea7b0d509652258ae34cb98b0b234e64309.exe	86
PID 316 wrote to memory of 3756	316	fde1678345d5c44d4d4850402fad1ea7b0d509652258ae34cb98b0b234e64309.exe	89
PID 316 wrote to memory of 3756	316	fde1678345d5c44d4d4850402fad1ea7b0d509652258ae34cb98b0b234e64309.exe	89
PID 316 wrote to memory of 3756	316	fde1678345d5c44d4d4850402fad1ea7b0d509652258ae34cb98b0b234e64309.exe	89
PID 316 wrote to memory of 4816	316	fde1678345d5c44d4d4850402fad1ea7b0d509652258ae34cb98b0b234e64309.exe	92
PID 316 wrote to memory of 4816	316	fde1678345d5c44d4d4850402fad1ea7b0d509652258ae34cb98b0b234e64309.exe	92
PID 316 wrote to memory of 4816	316	fde1678345d5c44d4d4850402fad1ea7b0d509652258ae34cb98b0b234e64309.exe	92
PID 316 wrote to memory of 3236	316	fde1678345d5c44d4d4850402fad1ea7b0d509652258ae34cb98b0b234e64309.exe	95
PID 316 wrote to memory of 3236	316	fde1678345d5c44d4d4850402fad1ea7b0d509652258ae34cb98b0b234e64309.exe	95
PID 316 wrote to memory of 3236	316	fde1678345d5c44d4d4850402fad1ea7b0d509652258ae34cb98b0b234e64309.exe	95
PID 316 wrote to memory of 3168	316	fde1678345d5c44d4d4850402fad1ea7b0d509652258ae34cb98b0b234e64309.exe	99
PID 316 wrote to memory of 3168	316	fde1678345d5c44d4d4850402fad1ea7b0d509652258ae34cb98b0b234e64309.exe	99
PID 316 wrote to memory of 3168	316	fde1678345d5c44d4d4850402fad1ea7b0d509652258ae34cb98b0b234e64309.exe	99
PID 2480 wrote to memory of 3664	2480	bhcfoxxs.exe	104
PID 2480 wrote to memory of 3664	2480	bhcfoxxs.exe	104
PID 2480 wrote to memory of 3664	2480	bhcfoxxs.exe	104
PID 2480 wrote to memory of 3664	2480	bhcfoxxs.exe	104
PID 2480 wrote to memory of 3664	2480	bhcfoxxs.exe	104

C:\Users\Admin\AppData\Local\Temp\fde1678345d5c44d4d4850402fad1ea7b0d509652258ae34cb98b0b234e64309.exe
"C:\Users\Admin\AppData\Local\Temp\fde1678345d5c44d4d4850402fad1ea7b0d509652258ae34cb98b0b234e64309.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:316
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pngieoih\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1248
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bhcfoxxs.exe" C:\Windows\SysWOW64\pngieoih\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4052
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create pngieoih binPath= "C:\Windows\SysWOW64\pngieoih\bhcfoxxs.exe /d\"C:\Users\Admin\AppData\Local\Temp\fde1678345d5c44d4d4850402fad1ea7b0d509652258ae34cb98b0b234e64309.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3756
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description pngieoih "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4816
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start pngieoih
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3236
- 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:3168
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 316 -s 788
  2⤵
  - Program crash
  PID:2956

C:\Windows\SysWOW64\pngieoih\bhcfoxxs.exe
C:\Windows\SysWOW64\pngieoih\bhcfoxxs.exe /d"C:\Users\Admin\AppData\Local\Temp\fde1678345d5c44d4d4850402fad1ea7b0d509652258ae34cb98b0b234e64309.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2480
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3664
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2480 -s 528
  2⤵
  - Program crash
  PID:688

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 316 -ip 316
1⤵
PID:4016

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 2480 -ip 2480
1⤵
PID:2880

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\bhcfoxxs.exe

Filesize
11.9MB

MD5
791c55855253e1b873ec72f06439f7ed

SHA1
eedd562cdc4cecb6708ca6e75857aa519612d382

SHA256
a9551bd5b454151b98a39e2a5890ca4dad32649aa5685b0c1000328c9297795e

SHA512
3f0a875bec0a15176f2bfdb384c3ce1f654b5c874161d0a59938fdae586377a57083db4e34286d87acd0432962d5a0d92121a77ba43833a8ebcbec5c9e77478f

Download Submit
memory/316-1-0x0000000003040000-0x0000000003140000-memory.dmp

Filesize
1024KB

Download
memory/316-2-0x0000000003010000-0x0000000003023000-memory.dmp

Filesize
76KB

Download
memory/316-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/316-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/316-9-0x0000000003010000-0x0000000003023000-memory.dmp

Filesize
76KB

Download
memory/316-8-0x0000000000400000-0x0000000002DA4000-memory.dmp

Filesize
41.6MB

Download
memory/2480-15-0x0000000000400000-0x0000000002DA4000-memory.dmp

Filesize
41.6MB

Download
memory/3664-11-0x00000000001B0000-0x00000000001C5000-memory.dmp

Filesize
84KB

Download
memory/3664-13-0x00000000001B0000-0x00000000001C5000-memory.dmp

Filesize
84KB

Download
memory/3664-14-0x00000000001B0000-0x00000000001C5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads