tofsee | cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97

General

Target

cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe
Size

12.1MB
MD5

0933a84caaad7a803af9327f00b427ea
SHA1

a819feb2801a42a00108a1e5989c0b8cab3a7620
SHA256

cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97
SHA512

665358ff9632179f2a872ff3b7d8185ba842569aa9af95cd9a65851d24d750bc9eebe50acb76e4b4cb1808baeed4637eaca167f01e6f89a720b4349ae9338a38
SSDEEP

49152:P1m333333333333333333333333333333333333333333333333333333333333w:d

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

Processes:

netsh.exe

pid process

2392 netsh.exe

pid	process
2392	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\popvmze\ImagePath = "C:\\Windows\\SysWOW64\\popvmze\\labhufzy.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

Processes:

cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

3204 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

labhufzy.exe

pid process

1996 labhufzy.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

labhufzy.exe

description pid process target process

PID 1996 set thread context of 3204 1996 labhufzy.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

860 sc.exe
4272 sc.exe
2456 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3204	svchost.exe

pid	process
1996	labhufzy.exe

description	pid	process	target process
PID 1996 set thread context of 3204	1996	labhufzy.exe	svchost.exe

pid	process
860	sc.exe
4272	sc.exe
2456	sc.exe

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

Processes:

netsh.exe

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

Processes:

WerFault.exeWerFault.exe

pid	pid_target	process	target process
4340	3488	WerFault.exe	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe
4136	1996	WerFault.exe	labhufzy.exe

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

Processes:

cmd.exesc.exesc.exesc.exenetsh.exelabhufzy.exesvchost.execd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.execmd.exe

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	labhufzy.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exelabhufzy.exe

description	pid	process	target process
PID 3488 wrote to memory of 3268	3488	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	cmd.exe
PID 3488 wrote to memory of 3268	3488	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	cmd.exe
PID 3488 wrote to memory of 3268	3488	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	cmd.exe
PID 3488 wrote to memory of 4120	3488	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	cmd.exe
PID 3488 wrote to memory of 4120	3488	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	cmd.exe
PID 3488 wrote to memory of 4120	3488	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	cmd.exe
PID 3488 wrote to memory of 860	3488	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	sc.exe
PID 3488 wrote to memory of 860	3488	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	sc.exe
PID 3488 wrote to memory of 860	3488	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	sc.exe
PID 3488 wrote to memory of 4272	3488	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	sc.exe
PID 3488 wrote to memory of 4272	3488	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	sc.exe
PID 3488 wrote to memory of 4272	3488	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	sc.exe
PID 3488 wrote to memory of 2456	3488	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	sc.exe
PID 3488 wrote to memory of 2456	3488	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	sc.exe
PID 3488 wrote to memory of 2456	3488	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	sc.exe
PID 3488 wrote to memory of 2392	3488	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	netsh.exe
PID 3488 wrote to memory of 2392	3488	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	netsh.exe
PID 3488 wrote to memory of 2392	3488	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	netsh.exe
PID 1996 wrote to memory of 3204	1996	labhufzy.exe	svchost.exe
PID 1996 wrote to memory of 3204	1996	labhufzy.exe	svchost.exe
PID 1996 wrote to memory of 3204	1996	labhufzy.exe	svchost.exe
PID 1996 wrote to memory of 3204	1996	labhufzy.exe	svchost.exe
PID 1996 wrote to memory of 3204	1996	labhufzy.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe
"C:\Users\Admin\AppData\Local\Temp\cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3488
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\popvmze\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3268
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\labhufzy.exe" C:\Windows\SysWOW64\popvmze\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4120
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create popvmze binPath= "C:\Windows\SysWOW64\popvmze\labhufzy.exe /d\"C:\Users\Admin\AppData\Local\Temp\cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:860
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description popvmze "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4272
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start popvmze
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2456
- 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:2392
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3488 -s 800
  2⤵
  - Program crash
  PID:4340

C:\Windows\SysWOW64\popvmze\labhufzy.exe
C:\Windows\SysWOW64\popvmze\labhufzy.exe /d"C:\Users\Admin\AppData\Local\Temp\cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1996
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3204
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1996 -s 524
  2⤵
  - Program crash
  PID:4136

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 3488 -ip 3488
1⤵
PID:3944

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 1996 -ip 1996
1⤵
PID:380

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\labhufzy.exe

Filesize
12.1MB

MD5
bdbe5dfa5325fb102a7b5cfb2a700ba2

SHA1
b61b6a93512b34f9550cf9802dbe0ee0b024ed52

SHA256
12959dda3e60e203cb8106f0226f070adc2d06f47b647eff0ab03de8a9f8fc4a

SHA512
6943e139991b3ccc875d85582166e2fa8ced6df65de94aa8629602e9c15bef8d17e801c53eb59a2d63b3e8f2b97ac7865e6245fa47c097edcd8e8e271cdd88ae

Download Submit
memory/1996-14-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/1996-17-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/3204-11-0x0000000000CC0000-0x0000000000CD5000-memory.dmp

Filesize
84KB

Download
memory/3204-13-0x0000000000CC0000-0x0000000000CD5000-memory.dmp

Filesize
84KB

Download
memory/3204-16-0x0000000000CC0000-0x0000000000CD5000-memory.dmp

Filesize
84KB

Download
memory/3488-1-0x00000000017F0000-0x00000000018F0000-memory.dmp

Filesize
1024KB

Download
memory/3488-2-0x00000000032D0000-0x00000000032E3000-memory.dmp

Filesize
76KB

Download
memory/3488-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3488-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3488-9-0x00000000032D0000-0x00000000032E3000-memory.dmp

Filesize
76KB

Download
memory/3488-8-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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