tofsee | eef9674a3b52a43eb0fdfaaa7d431a4c2b7dcf48f4ec3bc0e0f1a5f3c0d65817

General

Target

JaffaCakes118_f8d73df41f2762b31b9de96cfa433aa0.exe
Size

10.4MB
MD5

f8d73df41f2762b31b9de96cfa433aa0
SHA1

ae4aa80d63ec0a48f6b834a8cd862e0638afd383
SHA256

eef9674a3b52a43eb0fdfaaa7d431a4c2b7dcf48f4ec3bc0e0f1a5f3c0d65817
SHA512

15a379fdeb3a2900e92553054e9acbf3e68ddbe1e29c6806164e34c8a136c8de0b5f556a15e25ddf9577caec1f7a00b7e06d7d2149c0cc35cc9a5e9419286816
SSDEEP

196608:iE/vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvH:iE

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
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
3100	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\utftxxgo\ImagePath = "C:\\Windows\\SysWOW64\\utftxxgo\\dgeztaku.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	JaffaCakes118_f8d73df41f2762b31b9de96cfa433aa0.exe

Deletes itself 1 IoCs

pid	Process
3240	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4724	dgeztaku.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4724 set thread context of 3240	4724	dgeztaku.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
4472	sc.exe
3924	sc.exe
1528	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
3064	4868	WerFault.exe	82
1720	4724	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	JaffaCakes118_f8d73df41f2762b31b9de96cfa433aa0.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	dgeztaku.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4868 wrote to memory of 4492	4868	JaffaCakes118_f8d73df41f2762b31b9de96cfa433aa0.exe	83
PID 4868 wrote to memory of 4492	4868	JaffaCakes118_f8d73df41f2762b31b9de96cfa433aa0.exe	83
PID 4868 wrote to memory of 4492	4868	JaffaCakes118_f8d73df41f2762b31b9de96cfa433aa0.exe	83
PID 4868 wrote to memory of 5052	4868	JaffaCakes118_f8d73df41f2762b31b9de96cfa433aa0.exe	85
PID 4868 wrote to memory of 5052	4868	JaffaCakes118_f8d73df41f2762b31b9de96cfa433aa0.exe	85
PID 4868 wrote to memory of 5052	4868	JaffaCakes118_f8d73df41f2762b31b9de96cfa433aa0.exe	85
PID 4868 wrote to memory of 4472	4868	JaffaCakes118_f8d73df41f2762b31b9de96cfa433aa0.exe	87
PID 4868 wrote to memory of 4472	4868	JaffaCakes118_f8d73df41f2762b31b9de96cfa433aa0.exe	87
PID 4868 wrote to memory of 4472	4868	JaffaCakes118_f8d73df41f2762b31b9de96cfa433aa0.exe	87
PID 4868 wrote to memory of 3924	4868	JaffaCakes118_f8d73df41f2762b31b9de96cfa433aa0.exe	90
PID 4868 wrote to memory of 3924	4868	JaffaCakes118_f8d73df41f2762b31b9de96cfa433aa0.exe	90
PID 4868 wrote to memory of 3924	4868	JaffaCakes118_f8d73df41f2762b31b9de96cfa433aa0.exe	90
PID 4868 wrote to memory of 1528	4868	JaffaCakes118_f8d73df41f2762b31b9de96cfa433aa0.exe	92
PID 4868 wrote to memory of 1528	4868	JaffaCakes118_f8d73df41f2762b31b9de96cfa433aa0.exe	92
PID 4868 wrote to memory of 1528	4868	JaffaCakes118_f8d73df41f2762b31b9de96cfa433aa0.exe	92
PID 4868 wrote to memory of 3100	4868	JaffaCakes118_f8d73df41f2762b31b9de96cfa433aa0.exe	95
PID 4868 wrote to memory of 3100	4868	JaffaCakes118_f8d73df41f2762b31b9de96cfa433aa0.exe	95
PID 4868 wrote to memory of 3100	4868	JaffaCakes118_f8d73df41f2762b31b9de96cfa433aa0.exe	95
PID 4724 wrote to memory of 3240	4724	dgeztaku.exe	101
PID 4724 wrote to memory of 3240	4724	dgeztaku.exe	101
PID 4724 wrote to memory of 3240	4724	dgeztaku.exe	101
PID 4724 wrote to memory of 3240	4724	dgeztaku.exe	101
PID 4724 wrote to memory of 3240	4724	dgeztaku.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f8d73df41f2762b31b9de96cfa433aa0.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f8d73df41f2762b31b9de96cfa433aa0.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4868
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\utftxxgo\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4492
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\dgeztaku.exe" C:\Windows\SysWOW64\utftxxgo\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5052
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create utftxxgo binPath= "C:\Windows\SysWOW64\utftxxgo\dgeztaku.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f8d73df41f2762b31b9de96cfa433aa0.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4472
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description utftxxgo "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3924
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start utftxxgo
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1528
- 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:3100
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4868 -s 892
  2⤵
  - Program crash
  PID:3064

C:\Windows\SysWOW64\utftxxgo\dgeztaku.exe
C:\Windows\SysWOW64\utftxxgo\dgeztaku.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f8d73df41f2762b31b9de96cfa433aa0.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4724
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3240
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4724 -s 516
  2⤵
  - Program crash
  PID:1720

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4868 -ip 4868
1⤵
PID:3616

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4724 -ip 4724
1⤵
PID:1940

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\dgeztaku.exe

Filesize
13.6MB

MD5
1bb1cca69d82599cafc16cff74b1ed7b

SHA1
a1d0305bcea7edee1457735714dbb0ff84899a72

SHA256
9469a02c2c6b90e3415c1d7a876387d4bc3b50d9a5bda263cc1f895762931b24

SHA512
0dd0662a536fdf404e72c4b55b914bc1b391411510d0b13ef5fa99f59b28d5b983b9d70f734cbbec6249fbf39e34e3cc81a4d7b32ff3e7f71ee2985f400aaa81

Download Submit
memory/3240-15-0x00000000004E0000-0x00000000004F5000-memory.dmp

Filesize
84KB

Download
memory/3240-16-0x00000000004E0000-0x00000000004F5000-memory.dmp

Filesize
84KB

Download
memory/3240-12-0x00000000004E0000-0x00000000004F5000-memory.dmp

Filesize
84KB

Download
memory/4724-14-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/4724-11-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/4724-17-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/4868-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4868-8-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/4868-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4868-1-0x0000000000A50000-0x0000000000B50000-memory.dmp

Filesize
1024KB

Download
memory/4868-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4868-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads