tofsee | cb1cc6f9660fbdd4152c1731e6073cf372ed77d44103f59ea1199f5752c08f58

General

Target

JaffaCakes118_cd7e649bd844b7d663ff413f99f29bd9.exe
Size

12.9MB
MD5

cd7e649bd844b7d663ff413f99f29bd9
SHA1

6a843ea5ec07d9ec2c4fb05e1b552b86840be64c
SHA256

cb1cc6f9660fbdd4152c1731e6073cf372ed77d44103f59ea1199f5752c08f58
SHA512

90df240034bc6e5d81cc4f521e9d675a274f0a965325f63dbefdfc52206057c92edeff6938ba646844855081122b33eabca7a0ad2475ef675276ced76f8bc51c
SSDEEP

49152:nyzapZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ7:nC

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
2300	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\kdezcbee\ImagePath = "C:\\Windows\\SysWOW64\\kdezcbee\\zayileju.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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	JaffaCakes118_cd7e649bd844b7d663ff413f99f29bd9.exe

Deletes itself 1 IoCs

pid	Process
660	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3652	zayileju.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3652 set thread context of 660	3652	zayileju.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
3232	sc.exe
1156	sc.exe
1952	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
3740	984	WerFault.exe	82
4604	3652	WerFault.exe	94

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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_cd7e649bd844b7d663ff413f99f29bd9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	zayileju.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 984 wrote to memory of 4644	984	JaffaCakes118_cd7e649bd844b7d663ff413f99f29bd9.exe	83
PID 984 wrote to memory of 4644	984	JaffaCakes118_cd7e649bd844b7d663ff413f99f29bd9.exe	83
PID 984 wrote to memory of 4644	984	JaffaCakes118_cd7e649bd844b7d663ff413f99f29bd9.exe	83
PID 984 wrote to memory of 1580	984	JaffaCakes118_cd7e649bd844b7d663ff413f99f29bd9.exe	85
PID 984 wrote to memory of 1580	984	JaffaCakes118_cd7e649bd844b7d663ff413f99f29bd9.exe	85
PID 984 wrote to memory of 1580	984	JaffaCakes118_cd7e649bd844b7d663ff413f99f29bd9.exe	85
PID 984 wrote to memory of 3232	984	JaffaCakes118_cd7e649bd844b7d663ff413f99f29bd9.exe	88
PID 984 wrote to memory of 3232	984	JaffaCakes118_cd7e649bd844b7d663ff413f99f29bd9.exe	88
PID 984 wrote to memory of 3232	984	JaffaCakes118_cd7e649bd844b7d663ff413f99f29bd9.exe	88
PID 984 wrote to memory of 1156	984	JaffaCakes118_cd7e649bd844b7d663ff413f99f29bd9.exe	90
PID 984 wrote to memory of 1156	984	JaffaCakes118_cd7e649bd844b7d663ff413f99f29bd9.exe	90
PID 984 wrote to memory of 1156	984	JaffaCakes118_cd7e649bd844b7d663ff413f99f29bd9.exe	90
PID 984 wrote to memory of 1952	984	JaffaCakes118_cd7e649bd844b7d663ff413f99f29bd9.exe	92
PID 984 wrote to memory of 1952	984	JaffaCakes118_cd7e649bd844b7d663ff413f99f29bd9.exe	92
PID 984 wrote to memory of 1952	984	JaffaCakes118_cd7e649bd844b7d663ff413f99f29bd9.exe	92
PID 984 wrote to memory of 2300	984	JaffaCakes118_cd7e649bd844b7d663ff413f99f29bd9.exe	95
PID 984 wrote to memory of 2300	984	JaffaCakes118_cd7e649bd844b7d663ff413f99f29bd9.exe	95
PID 984 wrote to memory of 2300	984	JaffaCakes118_cd7e649bd844b7d663ff413f99f29bd9.exe	95
PID 3652 wrote to memory of 660	3652	zayileju.exe	103
PID 3652 wrote to memory of 660	3652	zayileju.exe	103
PID 3652 wrote to memory of 660	3652	zayileju.exe	103
PID 3652 wrote to memory of 660	3652	zayileju.exe	103
PID 3652 wrote to memory of 660	3652	zayileju.exe	103

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cd7e649bd844b7d663ff413f99f29bd9.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cd7e649bd844b7d663ff413f99f29bd9.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:984
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kdezcbee\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4644
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zayileju.exe" C:\Windows\SysWOW64\kdezcbee\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1580
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create kdezcbee binPath= "C:\Windows\SysWOW64\kdezcbee\zayileju.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cd7e649bd844b7d663ff413f99f29bd9.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3232
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description kdezcbee "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1156
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start kdezcbee
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1952
- 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:2300
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 984 -s 1048
  2⤵
  - Program crash
  PID:3740

C:\Windows\SysWOW64\kdezcbee\zayileju.exe
C:\Windows\SysWOW64\kdezcbee\zayileju.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cd7e649bd844b7d663ff413f99f29bd9.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3652
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:660
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3652 -s 524
  2⤵
  - Program crash
  PID:4604

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 984 -ip 984
1⤵
PID:4348

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 3652 -ip 3652
1⤵
PID:876

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\zayileju.exe

Filesize
10.0MB

MD5
257f969a74cfd53c2bafc61614f92caa

SHA1
ee4bb5617d1615afb6feb323b4ad226694e3f470

SHA256
7fcc4c2f06816b16f11c0e4f92c51be1cdb698b7d05356e7fec8030a019c99ad

SHA512
8e2615781cf1fd577160a7a31fc6fb8a7c7fdef10f6edcb262c9c826d7bac947a53c776d716eec16c9795001b4dfcc62688591f067bb89cf1cf14c29d02a0657

Download Submit
memory/660-13-0x0000000000360000-0x0000000000375000-memory.dmp

Filesize
84KB

Download
memory/660-11-0x0000000000360000-0x0000000000375000-memory.dmp

Filesize
84KB

Download
memory/660-15-0x0000000000360000-0x0000000000375000-memory.dmp

Filesize
84KB

Download
memory/984-1-0x0000000001870000-0x0000000001970000-memory.dmp

Filesize
1024KB

Download
memory/984-2-0x0000000001820000-0x0000000001833000-memory.dmp

Filesize
76KB

Download
memory/984-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/984-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/984-9-0x0000000001820000-0x0000000001833000-memory.dmp

Filesize
76KB

Download
memory/984-8-0x0000000000400000-0x00000000016BD000-memory.dmp

Filesize
18.7MB

Download
memory/3652-14-0x0000000000400000-0x00000000016BD000-memory.dmp

Filesize
18.7MB

Download
memory/3652-17-0x0000000000400000-0x00000000016BD000-memory.dmp

Filesize
18.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads