tofsee | a7056eb421a643c05cf9efe13243ceb5616afbe32c22463fa31c28713a75f64c

General

Target

39d8d866a867f40caa5860f7bc690589_JaffaCakes118.exe
Size

10.3MB
MD5

39d8d866a867f40caa5860f7bc690589
SHA1

a574a87a19336154580ba778b9f8460ee28819c4
SHA256

a7056eb421a643c05cf9efe13243ceb5616afbe32c22463fa31c28713a75f64c
SHA512

c8c5be5ca4eb79f9bffff462b0260e494a5a4e267368be95f4f7d3df67de6df73777959722ae45d90dde2eacc331a5ddd542d5cdf8fbd644b9cf662397701409
SSDEEP

49152:zGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG+:

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan 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
2016	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\ombnweam\ImagePath = "C:\\Windows\\SysWOW64\\ombnweam\\kixjdzka.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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	39d8d866a867f40caa5860f7bc690589_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2024	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2868	kixjdzka.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2868 set thread context of 2024	2868	kixjdzka.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
4876	sc.exe
3028	sc.exe
3116	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
2592	1764	WerFault.exe	84
4732	2868	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	kixjdzka.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	39d8d866a867f40caa5860f7bc690589_JaffaCakes118.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1764 wrote to memory of 2112	1764	39d8d866a867f40caa5860f7bc690589_JaffaCakes118.exe	86
PID 1764 wrote to memory of 2112	1764	39d8d866a867f40caa5860f7bc690589_JaffaCakes118.exe	86
PID 1764 wrote to memory of 2112	1764	39d8d866a867f40caa5860f7bc690589_JaffaCakes118.exe	86
PID 1764 wrote to memory of 5020	1764	39d8d866a867f40caa5860f7bc690589_JaffaCakes118.exe	88
PID 1764 wrote to memory of 5020	1764	39d8d866a867f40caa5860f7bc690589_JaffaCakes118.exe	88
PID 1764 wrote to memory of 5020	1764	39d8d866a867f40caa5860f7bc690589_JaffaCakes118.exe	88
PID 1764 wrote to memory of 4876	1764	39d8d866a867f40caa5860f7bc690589_JaffaCakes118.exe	90
PID 1764 wrote to memory of 4876	1764	39d8d866a867f40caa5860f7bc690589_JaffaCakes118.exe	90
PID 1764 wrote to memory of 4876	1764	39d8d866a867f40caa5860f7bc690589_JaffaCakes118.exe	90
PID 1764 wrote to memory of 3028	1764	39d8d866a867f40caa5860f7bc690589_JaffaCakes118.exe	92
PID 1764 wrote to memory of 3028	1764	39d8d866a867f40caa5860f7bc690589_JaffaCakes118.exe	92
PID 1764 wrote to memory of 3028	1764	39d8d866a867f40caa5860f7bc690589_JaffaCakes118.exe	92
PID 1764 wrote to memory of 3116	1764	39d8d866a867f40caa5860f7bc690589_JaffaCakes118.exe	94
PID 1764 wrote to memory of 3116	1764	39d8d866a867f40caa5860f7bc690589_JaffaCakes118.exe	94
PID 1764 wrote to memory of 3116	1764	39d8d866a867f40caa5860f7bc690589_JaffaCakes118.exe	94
PID 1764 wrote to memory of 2016	1764	39d8d866a867f40caa5860f7bc690589_JaffaCakes118.exe	97
PID 1764 wrote to memory of 2016	1764	39d8d866a867f40caa5860f7bc690589_JaffaCakes118.exe	97
PID 1764 wrote to memory of 2016	1764	39d8d866a867f40caa5860f7bc690589_JaffaCakes118.exe	97
PID 2868 wrote to memory of 2024	2868	kixjdzka.exe	103
PID 2868 wrote to memory of 2024	2868	kixjdzka.exe	103
PID 2868 wrote to memory of 2024	2868	kixjdzka.exe	103
PID 2868 wrote to memory of 2024	2868	kixjdzka.exe	103
PID 2868 wrote to memory of 2024	2868	kixjdzka.exe	103

C:\Users\Admin\AppData\Local\Temp\39d8d866a867f40caa5860f7bc690589_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\39d8d866a867f40caa5860f7bc690589_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1764
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ombnweam\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2112
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kixjdzka.exe" C:\Windows\SysWOW64\ombnweam\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5020
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ombnweam binPath= "C:\Windows\SysWOW64\ombnweam\kixjdzka.exe /d\"C:\Users\Admin\AppData\Local\Temp\39d8d866a867f40caa5860f7bc690589_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4876
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ombnweam "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3028
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ombnweam
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3116
- 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:2016
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1764 -s 1264
  2⤵
  - Program crash
  PID:2592

C:\Windows\SysWOW64\ombnweam\kixjdzka.exe
C:\Windows\SysWOW64\ombnweam\kixjdzka.exe /d"C:\Users\Admin\AppData\Local\Temp\39d8d866a867f40caa5860f7bc690589_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2868
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2024
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2868 -s 508
  2⤵
  - Program crash
  PID:4732

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1764 -ip 1764
1⤵
PID:4868

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2868 -ip 2868
1⤵
PID:5064

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\kixjdzka.exe

Filesize
12.6MB

MD5
79e24581526ffc14f107bb3bc28ff108

SHA1
2ca1b6f5fc30878238ccf481acd095d51b430c8e

SHA256
ee3e70cbecce8d6441bf0ab40c6e8c9b6bd25766ec39831de257ba1bf4d373c1

SHA512
5bef24d5305d930875422a1eb974a4d533b097a466251dda0ef5882237a09a0767df7815861f58da0e8c2fa07178358593b113a5a05a068997663e4e94fbb841

Download Submit
memory/1764-9-0x00000000021A0000-0x00000000021B3000-memory.dmp

Filesize
76KB

Download
memory/1764-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1764-2-0x00000000021A0000-0x00000000021B3000-memory.dmp

Filesize
76KB

Download
memory/1764-8-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/1764-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1764-1-0x0000000000680000-0x0000000000780000-memory.dmp

Filesize
1024KB

Download
memory/2024-14-0x0000000000CB0000-0x0000000000CC5000-memory.dmp

Filesize
84KB

Download
memory/2024-16-0x0000000000CB0000-0x0000000000CC5000-memory.dmp

Filesize
84KB

Download
memory/2024-17-0x0000000000CB0000-0x0000000000CC5000-memory.dmp

Filesize
84KB

Download
memory/2868-12-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/2868-11-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/2868-13-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/2868-18-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads