tofsee | af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9

General

Target

af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe
Size

13.8MB
MD5

4842a0bebf959ba6fdc4b18107c78094
SHA1

237f34e23c2853820a1faf6aed7bc7af837dae41
SHA256

af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9
SHA512

2098a9e8b61f27f41854d34d4833571be3a0fc163c2ee83f5aea4bbcf49f44da362980da43744e7b10456a8aec4034455e271e4b3117946e6891bc1bf18ca4ca
SSDEEP

196608:kxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxz:8

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
2540	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\tlspktoo\ImagePath = "C:\\Windows\\SysWOW64\\tlspktoo\\zotuowzs.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	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe

Deletes itself 1 IoCs

pid	Process
2268	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3484	zotuowzs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3484 set thread context of 2268	3484	zotuowzs.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
2820	sc.exe
4024	sc.exe
2912	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
2664	3228	WerFault.exe	81
2036	3484	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	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	zotuowzs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3228 wrote to memory of 408	3228	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe	84
PID 3228 wrote to memory of 408	3228	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe	84
PID 3228 wrote to memory of 408	3228	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe	84
PID 3228 wrote to memory of 4556	3228	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe	86
PID 3228 wrote to memory of 4556	3228	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe	86
PID 3228 wrote to memory of 4556	3228	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe	86
PID 3228 wrote to memory of 2912	3228	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe	89
PID 3228 wrote to memory of 2912	3228	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe	89
PID 3228 wrote to memory of 2912	3228	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe	89
PID 3228 wrote to memory of 2820	3228	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe	92
PID 3228 wrote to memory of 2820	3228	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe	92
PID 3228 wrote to memory of 2820	3228	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe	92
PID 3228 wrote to memory of 4024	3228	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe	94
PID 3228 wrote to memory of 4024	3228	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe	94
PID 3228 wrote to memory of 4024	3228	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe	94
PID 3228 wrote to memory of 2540	3228	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe	97
PID 3228 wrote to memory of 2540	3228	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe	97
PID 3228 wrote to memory of 2540	3228	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe	97
PID 3484 wrote to memory of 2268	3484	zotuowzs.exe	103
PID 3484 wrote to memory of 2268	3484	zotuowzs.exe	103
PID 3484 wrote to memory of 2268	3484	zotuowzs.exe	103
PID 3484 wrote to memory of 2268	3484	zotuowzs.exe	103
PID 3484 wrote to memory of 2268	3484	zotuowzs.exe	103

C:\Users\Admin\AppData\Local\Temp\af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe
"C:\Users\Admin\AppData\Local\Temp\af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3228
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tlspktoo\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:408
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zotuowzs.exe" C:\Windows\SysWOW64\tlspktoo\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4556
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create tlspktoo binPath= "C:\Windows\SysWOW64\tlspktoo\zotuowzs.exe /d\"C:\Users\Admin\AppData\Local\Temp\af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2912
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description tlspktoo "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2820
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start tlspktoo
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4024
- 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:2540
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3228 -s 1048
  2⤵
  - Program crash
  PID:2664

C:\Windows\SysWOW64\tlspktoo\zotuowzs.exe
C:\Windows\SysWOW64\tlspktoo\zotuowzs.exe /d"C:\Users\Admin\AppData\Local\Temp\af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3484
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2268
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3484 -s 520
  2⤵
  - Program crash
  PID:2036

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3228 -ip 3228
1⤵
PID:2908

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 3484 -ip 3484
1⤵
PID:4288

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\zotuowzs.exe

Filesize
13.2MB

MD5
05d588b52f6f5afd60121a0dd91860ec

SHA1
2a39717941dd6c7ff0f6ee5a57f3eed0c400e940

SHA256
c5982c660c33b116a63036a6df243f3093da33639542b76ae9870163e046f0ca

SHA512
a1891e5d0b691c280f49dc44ae020a2303edb127c1449c17c8beaa8aa78a7e2334695990618b1de866069e4dba7eab376780427b63a2091673418104979bd69f

Download Submit
memory/2268-10-0x0000000000770000-0x0000000000785000-memory.dmp

Filesize
84KB

Download
memory/2268-12-0x0000000000770000-0x0000000000785000-memory.dmp

Filesize
84KB

Download
memory/2268-13-0x0000000000770000-0x0000000000785000-memory.dmp

Filesize
84KB

Download
memory/3228-0-0x00000000030B0000-0x00000000030BD000-memory.dmp

Filesize
52KB

Download
memory/3228-1-0x0000000004C70000-0x0000000004C83000-memory.dmp

Filesize
76KB

Download
memory/3228-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3228-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3228-7-0x00000000030B0000-0x00000000030BD000-memory.dmp

Filesize
52KB

Download
memory/3228-6-0x0000000000400000-0x0000000002F06000-memory.dmp

Filesize
43.0MB

Download
memory/3228-8-0x0000000004C70000-0x0000000004C83000-memory.dmp

Filesize
76KB

Download
memory/3484-14-0x0000000000400000-0x0000000002F06000-memory.dmp

Filesize
43.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads