tofsee | 2d6a0c56a8747c82868605e8d25db845911a79d28cb4b77196a0026ac6d95427

General

Target

JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe
Size

302KB
MD5

92f27854fc1c33255253c9d0fedf7a8b
SHA1

6888e1954ebe90a884250d182c7bd166f4e98ca0
SHA256

2d6a0c56a8747c82868605e8d25db845911a79d28cb4b77196a0026ac6d95427
SHA512

429671f2875f1de2bd940d6fc8aa46c958086f05c32e74f530521068f40ee6dd9b86909ad099fb3a0c9e1893a48f9a24e65a0d4ad7f57e02501b8fd7484c04c9
SSDEEP

6144:UuGJxsl1+JHGaZVApoeZWK8pzMxhrgtu:40yGaZVaoe18pzigt

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
2308	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\pieikbzj\ImagePath = "C:\\Windows\\SysWOW64\\pieikbzj\\dxtzkums.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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe

Deletes itself 1 IoCs

pid	Process
1012	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4516	dxtzkums.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4516 set thread context of 1012	4516	dxtzkums.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
1412	sc.exe
3108	sc.exe
2980	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
5104	2184	WerFault.exe	84
4212	4516	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	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	dxtzkums.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2184 wrote to memory of 2836	2184	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	85
PID 2184 wrote to memory of 2836	2184	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	85
PID 2184 wrote to memory of 2836	2184	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	85
PID 2184 wrote to memory of 580	2184	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	87
PID 2184 wrote to memory of 580	2184	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	87
PID 2184 wrote to memory of 580	2184	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	87
PID 2184 wrote to memory of 1412	2184	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	89
PID 2184 wrote to memory of 1412	2184	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	89
PID 2184 wrote to memory of 1412	2184	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	89
PID 2184 wrote to memory of 3108	2184	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	91
PID 2184 wrote to memory of 3108	2184	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	91
PID 2184 wrote to memory of 3108	2184	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	91
PID 2184 wrote to memory of 2980	2184	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	94
PID 2184 wrote to memory of 2980	2184	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	94
PID 2184 wrote to memory of 2980	2184	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	94
PID 2184 wrote to memory of 2308	2184	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	97
PID 2184 wrote to memory of 2308	2184	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	97
PID 2184 wrote to memory of 2308	2184	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	97
PID 4516 wrote to memory of 1012	4516	dxtzkums.exe	103
PID 4516 wrote to memory of 1012	4516	dxtzkums.exe	103
PID 4516 wrote to memory of 1012	4516	dxtzkums.exe	103
PID 4516 wrote to memory of 1012	4516	dxtzkums.exe	103
PID 4516 wrote to memory of 1012	4516	dxtzkums.exe	103

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2184
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pieikbzj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2836
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\dxtzkums.exe" C:\Windows\SysWOW64\pieikbzj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:580
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create pieikbzj binPath= "C:\Windows\SysWOW64\pieikbzj\dxtzkums.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1412
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description pieikbzj "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3108
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start pieikbzj
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2980
- 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:2308
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2184 -s 1040
  2⤵
  - Program crash
  PID:5104

C:\Windows\SysWOW64\pieikbzj\dxtzkums.exe
C:\Windows\SysWOW64\pieikbzj\dxtzkums.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4516
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1012
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4516 -s 516
  2⤵
  - Program crash
  PID:4212

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2184 -ip 2184
1⤵
PID:2296

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4516 -ip 4516
1⤵
PID:4368

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\dxtzkums.exe

Filesize
12.3MB

MD5
a8c559bdb2eaf4fd2791d954701a63f4

SHA1
ecf9de75dd97e28b2bb0eab0b85c926b6236c263

SHA256
197d6e70de5feae10ae59e89a2b9dbbf3b8cc2502d995ffbbb4169faecd15274

SHA512
87d385097c38ab5cf9e6ca00828d124742cf5203f9e4cf1c521683269b2ae8de7593fe3c9873003ff8c7a57f83ef4bc4c367361c1e5c176e48859f16e0dae170

Download Submit
memory/1012-11-0x00000000010E0000-0x00000000010F5000-memory.dmp

Filesize
84KB

Download
memory/1012-13-0x00000000010E0000-0x00000000010F5000-memory.dmp

Filesize
84KB

Download
memory/1012-14-0x00000000010E0000-0x00000000010F5000-memory.dmp

Filesize
84KB

Download
memory/2184-1-0x0000000002F20000-0x0000000003020000-memory.dmp

Filesize
1024KB

Download
memory/2184-2-0x0000000004B00000-0x0000000004B13000-memory.dmp

Filesize
76KB

Download
memory/2184-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2184-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2184-9-0x0000000004B00000-0x0000000004B13000-memory.dmp

Filesize
76KB

Download
memory/2184-8-0x0000000000400000-0x0000000002DA3000-memory.dmp

Filesize
41.6MB

Download
memory/4516-15-0x0000000000400000-0x0000000002DA3000-memory.dmp

Filesize
41.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads