tofsee | 902c64f8f0ca0373d745468bb8941d492e0aa734f0c081088b4dd0ab153097d7

General

Target

JaffaCakes118_3566557df83506670d9589b709f71cbd.exe
Size

12.9MB
MD5

3566557df83506670d9589b709f71cbd
SHA1

e89af9bfe94a96b256f8559bf3b9fbcf32606ccd
SHA256

902c64f8f0ca0373d745468bb8941d492e0aa734f0c081088b4dd0ab153097d7
SHA512

0c8e955713344770a0f464823368931261b59c876d02e838259889f7354730248934b301f4d4ca320d1c18e5aaabd03b4af3cb0b323622058bbef0c395961c71
SSDEEP

393216:QppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppX:

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.6

lazystax.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
1708	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\lvmgchwc\ImagePath = "C:\\Windows\\SysWOW64\\lvmgchwc\\cpotdouy.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	JaffaCakes118_3566557df83506670d9589b709f71cbd.exe

Deletes itself 1 IoCs

pid	Process
3008	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1580	cpotdouy.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1580 set thread context of 3008	1580	cpotdouy.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
2692	sc.exe
2264	sc.exe
4488	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
4956	848	WerFault.exe	81
2468	1580	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	JaffaCakes118_3566557df83506670d9589b709f71cbd.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	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	cpotdouy.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 848 wrote to memory of 3540	848	JaffaCakes118_3566557df83506670d9589b709f71cbd.exe	82
PID 848 wrote to memory of 3540	848	JaffaCakes118_3566557df83506670d9589b709f71cbd.exe	82
PID 848 wrote to memory of 3540	848	JaffaCakes118_3566557df83506670d9589b709f71cbd.exe	82
PID 848 wrote to memory of 3804	848	JaffaCakes118_3566557df83506670d9589b709f71cbd.exe	84
PID 848 wrote to memory of 3804	848	JaffaCakes118_3566557df83506670d9589b709f71cbd.exe	84
PID 848 wrote to memory of 3804	848	JaffaCakes118_3566557df83506670d9589b709f71cbd.exe	84
PID 848 wrote to memory of 2264	848	JaffaCakes118_3566557df83506670d9589b709f71cbd.exe	86
PID 848 wrote to memory of 2264	848	JaffaCakes118_3566557df83506670d9589b709f71cbd.exe	86
PID 848 wrote to memory of 2264	848	JaffaCakes118_3566557df83506670d9589b709f71cbd.exe	86
PID 848 wrote to memory of 4488	848	JaffaCakes118_3566557df83506670d9589b709f71cbd.exe	88
PID 848 wrote to memory of 4488	848	JaffaCakes118_3566557df83506670d9589b709f71cbd.exe	88
PID 848 wrote to memory of 4488	848	JaffaCakes118_3566557df83506670d9589b709f71cbd.exe	88
PID 848 wrote to memory of 2692	848	JaffaCakes118_3566557df83506670d9589b709f71cbd.exe	90
PID 848 wrote to memory of 2692	848	JaffaCakes118_3566557df83506670d9589b709f71cbd.exe	90
PID 848 wrote to memory of 2692	848	JaffaCakes118_3566557df83506670d9589b709f71cbd.exe	90
PID 848 wrote to memory of 1708	848	JaffaCakes118_3566557df83506670d9589b709f71cbd.exe	93
PID 848 wrote to memory of 1708	848	JaffaCakes118_3566557df83506670d9589b709f71cbd.exe	93
PID 848 wrote to memory of 1708	848	JaffaCakes118_3566557df83506670d9589b709f71cbd.exe	93
PID 1580 wrote to memory of 3008	1580	cpotdouy.exe	102
PID 1580 wrote to memory of 3008	1580	cpotdouy.exe	102
PID 1580 wrote to memory of 3008	1580	cpotdouy.exe	102
PID 1580 wrote to memory of 3008	1580	cpotdouy.exe	102
PID 1580 wrote to memory of 3008	1580	cpotdouy.exe	102

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3566557df83506670d9589b709f71cbd.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3566557df83506670d9589b709f71cbd.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:848
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lvmgchwc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3540
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cpotdouy.exe" C:\Windows\SysWOW64\lvmgchwc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3804
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create lvmgchwc binPath= "C:\Windows\SysWOW64\lvmgchwc\cpotdouy.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3566557df83506670d9589b709f71cbd.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2264
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description lvmgchwc "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4488
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start lvmgchwc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2692
- 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:1708
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 848 -s 1040
  2⤵
  - Program crash
  PID:4956

C:\Windows\SysWOW64\lvmgchwc\cpotdouy.exe
C:\Windows\SysWOW64\lvmgchwc\cpotdouy.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3566557df83506670d9589b709f71cbd.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1580
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3008
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1580 -s 508
  2⤵
  - Program crash
  PID:2468

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 848 -ip 848
1⤵
PID:1744

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1580 -ip 1580
1⤵
PID:3496

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\cpotdouy.exe

Filesize
12.7MB

MD5
979123d37f13b14b36067a01eb0545ee

SHA1
576f0e7a01cf1452e5edee3f35ced80bcad316a5

SHA256
af7ccf7e1823834a588242a3f5e7a484390c5ca9473e5c6245db810eda3e02a8

SHA512
fcb341aa03431dd8fde7928f9175fc430dd26dd8c83da32f0b08e30cd41a9c6b10adcf843af4d029bbb66f2a2df9bdeb990f4639a040d9000399ad8d439207bb

Download Submit
memory/848-1-0x0000000000A50000-0x0000000000B50000-memory.dmp

Filesize
1024KB

Download
memory/848-2-0x0000000002500000-0x0000000002513000-memory.dmp

Filesize
76KB

Download
memory/848-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/848-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/848-7-0x0000000000400000-0x00000000008F6000-memory.dmp

Filesize
5.0MB

Download
memory/848-8-0x0000000002500000-0x0000000002513000-memory.dmp

Filesize
76KB

Download
memory/1580-15-0x0000000000400000-0x00000000008F6000-memory.dmp

Filesize
5.0MB

Download
memory/3008-11-0x00000000010B0000-0x00000000010C5000-memory.dmp

Filesize
84KB

Download
memory/3008-13-0x00000000010B0000-0x00000000010C5000-memory.dmp

Filesize
84KB

Download
memory/3008-14-0x00000000010B0000-0x00000000010C5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads