tofsee | bc73ac7b6af032e502c4ffa71acedacd1062679ff9f6d35ca046eb8f4b0e43a9

General

Target

JaffaCakes118_bc73ac7b6af032e502c4ffa71acedacd1062679ff9f6d35ca046eb8f4b0e43a9.exe
Size

292KB
MD5

be4db488e1175f94ff48a099dbfec832
SHA1

c6ea22eb8dbeb906635048ef4fe1157dc0c96365
SHA256

bc73ac7b6af032e502c4ffa71acedacd1062679ff9f6d35ca046eb8f4b0e43a9
SHA512

424bf39eae62856db8e57712a1616d2dba4474aa062f8da48b7ab63b419abae4120b657db356d31cedca2afd2e061ce780f52d5b9598349934cf9d0ad0295787
SSDEEP

6144:Xe91EWAEf6zdvBIWYu+0frSXuZet0yobvPtxkmzmQJ/G:u913izdBYujDSXuZet0yobvrfzm

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
4868	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\unijcbfi\ImagePath = "C:\\Windows\\SysWOW64\\unijcbfi\\kdykodo.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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	JaffaCakes118_bc73ac7b6af032e502c4ffa71acedacd1062679ff9f6d35ca046eb8f4b0e43a9.exe

Deletes itself 1 IoCs

pid	Process
244	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4204	kdykodo.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4204 set thread context of 244	4204	kdykodo.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
2504	sc.exe
720	sc.exe
2160	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
564	3940	WerFault.exe	81
3888	4204	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_bc73ac7b6af032e502c4ffa71acedacd1062679ff9f6d35ca046eb8f4b0e43a9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	kdykodo.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 3940 wrote to memory of 252	3940	JaffaCakes118_bc73ac7b6af032e502c4ffa71acedacd1062679ff9f6d35ca046eb8f4b0e43a9.exe	82
PID 3940 wrote to memory of 252	3940	JaffaCakes118_bc73ac7b6af032e502c4ffa71acedacd1062679ff9f6d35ca046eb8f4b0e43a9.exe	82
PID 3940 wrote to memory of 252	3940	JaffaCakes118_bc73ac7b6af032e502c4ffa71acedacd1062679ff9f6d35ca046eb8f4b0e43a9.exe	82
PID 3940 wrote to memory of 3648	3940	JaffaCakes118_bc73ac7b6af032e502c4ffa71acedacd1062679ff9f6d35ca046eb8f4b0e43a9.exe	84
PID 3940 wrote to memory of 3648	3940	JaffaCakes118_bc73ac7b6af032e502c4ffa71acedacd1062679ff9f6d35ca046eb8f4b0e43a9.exe	84
PID 3940 wrote to memory of 3648	3940	JaffaCakes118_bc73ac7b6af032e502c4ffa71acedacd1062679ff9f6d35ca046eb8f4b0e43a9.exe	84
PID 3940 wrote to memory of 2504	3940	JaffaCakes118_bc73ac7b6af032e502c4ffa71acedacd1062679ff9f6d35ca046eb8f4b0e43a9.exe	86
PID 3940 wrote to memory of 2504	3940	JaffaCakes118_bc73ac7b6af032e502c4ffa71acedacd1062679ff9f6d35ca046eb8f4b0e43a9.exe	86
PID 3940 wrote to memory of 2504	3940	JaffaCakes118_bc73ac7b6af032e502c4ffa71acedacd1062679ff9f6d35ca046eb8f4b0e43a9.exe	86
PID 3940 wrote to memory of 720	3940	JaffaCakes118_bc73ac7b6af032e502c4ffa71acedacd1062679ff9f6d35ca046eb8f4b0e43a9.exe	88
PID 3940 wrote to memory of 720	3940	JaffaCakes118_bc73ac7b6af032e502c4ffa71acedacd1062679ff9f6d35ca046eb8f4b0e43a9.exe	88
PID 3940 wrote to memory of 720	3940	JaffaCakes118_bc73ac7b6af032e502c4ffa71acedacd1062679ff9f6d35ca046eb8f4b0e43a9.exe	88
PID 3940 wrote to memory of 2160	3940	JaffaCakes118_bc73ac7b6af032e502c4ffa71acedacd1062679ff9f6d35ca046eb8f4b0e43a9.exe	90
PID 3940 wrote to memory of 2160	3940	JaffaCakes118_bc73ac7b6af032e502c4ffa71acedacd1062679ff9f6d35ca046eb8f4b0e43a9.exe	90
PID 3940 wrote to memory of 2160	3940	JaffaCakes118_bc73ac7b6af032e502c4ffa71acedacd1062679ff9f6d35ca046eb8f4b0e43a9.exe	90
PID 3940 wrote to memory of 4868	3940	JaffaCakes118_bc73ac7b6af032e502c4ffa71acedacd1062679ff9f6d35ca046eb8f4b0e43a9.exe	93
PID 3940 wrote to memory of 4868	3940	JaffaCakes118_bc73ac7b6af032e502c4ffa71acedacd1062679ff9f6d35ca046eb8f4b0e43a9.exe	93
PID 3940 wrote to memory of 4868	3940	JaffaCakes118_bc73ac7b6af032e502c4ffa71acedacd1062679ff9f6d35ca046eb8f4b0e43a9.exe	93
PID 4204 wrote to memory of 244	4204	kdykodo.exe	98
PID 4204 wrote to memory of 244	4204	kdykodo.exe	98
PID 4204 wrote to memory of 244	4204	kdykodo.exe	98
PID 4204 wrote to memory of 244	4204	kdykodo.exe	98
PID 4204 wrote to memory of 244	4204	kdykodo.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bc73ac7b6af032e502c4ffa71acedacd1062679ff9f6d35ca046eb8f4b0e43a9.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bc73ac7b6af032e502c4ffa71acedacd1062679ff9f6d35ca046eb8f4b0e43a9.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3940
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\unijcbfi\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:252
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kdykodo.exe" C:\Windows\SysWOW64\unijcbfi\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3648
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create unijcbfi binPath= "C:\Windows\SysWOW64\unijcbfi\kdykodo.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bc73ac7b6af032e502c4ffa71acedacd1062679ff9f6d35ca046eb8f4b0e43a9.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2504
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description unijcbfi "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:720
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start unijcbfi
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2160
- 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:4868
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3940 -s 656
  2⤵
  - Program crash
  PID:564

C:\Windows\SysWOW64\unijcbfi\kdykodo.exe
C:\Windows\SysWOW64\unijcbfi\kdykodo.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bc73ac7b6af032e502c4ffa71acedacd1062679ff9f6d35ca046eb8f4b0e43a9.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4204
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:244
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4204 -s 516
  2⤵
  - Program crash
  PID:3888

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3940 -ip 3940
1⤵
PID:2972

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4204 -ip 4204
1⤵
PID:4916

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\kdykodo.exe

Filesize
12.8MB

MD5
f3c132f1bb708ec7fc8a1d80f012ed98

SHA1
623e481eababfe83df10f59d47959fe489e4e9b0

SHA256
cc86c01cbccfde597d555309b96acf4371595f6b3f541342f44c374607fc7aa7

SHA512
c0cf4ba51310e17d53d7ee6765811aa33f412378f560a936e899a8bf2d332f1340dd6cf416b3c413d6da8398605c5eba6ebab987e979d52317807dc92f91b525

Download Submit
memory/244-11-0x0000000000720000-0x0000000000735000-memory.dmp

Filesize
84KB

Download
memory/244-13-0x0000000000720000-0x0000000000735000-memory.dmp

Filesize
84KB

Download
memory/244-14-0x0000000000720000-0x0000000000735000-memory.dmp

Filesize
84KB

Download
memory/3940-1-0x0000000002D80000-0x0000000002E80000-memory.dmp

Filesize
1024KB

Download
memory/3940-2-0x00000000048A0000-0x00000000048B3000-memory.dmp

Filesize
76KB

Download
memory/3940-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3940-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3940-8-0x00000000048A0000-0x00000000048B3000-memory.dmp

Filesize
76KB

Download
memory/3940-7-0x0000000000400000-0x0000000002B41000-memory.dmp

Filesize
39.3MB

Download
memory/4204-15-0x0000000000400000-0x0000000002B41000-memory.dmp

Filesize
39.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads