tofsee | 1822fa2ba4aefbb104ff7ccc5cda7f369a25cf016a1a3eca55c16bde2ceb4b94

General

Target

JaffaCakes118_26e137a7637690dc59d8e8a2d021faa1.exe
Size

13.3MB
MD5

26e137a7637690dc59d8e8a2d021faa1
SHA1

c886d75827062fb557ffaee27523f99ea757a9ed
SHA256

1822fa2ba4aefbb104ff7ccc5cda7f369a25cf016a1a3eca55c16bde2ceb4b94
SHA512

9f0efed008a315698a4a1b7127ad4d5d1e4d370c4299391478fff22f37bbb44df2d5d8d768e87c1a58cf9bcdd41d8218b4032eb9de4ae82ed7f6165676d22cb6
SSDEEP

24576:pAWcGx111111111111111111111111111111111111111111111111111111111/:pHH

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
4252	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\oarvjefh\ImagePath = "C:\\Windows\\SysWOW64\\oarvjefh\\xcyqord.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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	JaffaCakes118_26e137a7637690dc59d8e8a2d021faa1.exe

Deletes itself 1 IoCs

pid	Process
1740	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
876	xcyqord.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 876 set thread context of 1740	876	xcyqord.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
1632	sc.exe
4344	sc.exe
1872	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
348	3936	WerFault.exe	84
1320	876	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_26e137a7637690dc59d8e8a2d021faa1.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	xcyqord.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3936 wrote to memory of 3076	3936	JaffaCakes118_26e137a7637690dc59d8e8a2d021faa1.exe	85
PID 3936 wrote to memory of 3076	3936	JaffaCakes118_26e137a7637690dc59d8e8a2d021faa1.exe	85
PID 3936 wrote to memory of 3076	3936	JaffaCakes118_26e137a7637690dc59d8e8a2d021faa1.exe	85
PID 3936 wrote to memory of 2296	3936	JaffaCakes118_26e137a7637690dc59d8e8a2d021faa1.exe	87
PID 3936 wrote to memory of 2296	3936	JaffaCakes118_26e137a7637690dc59d8e8a2d021faa1.exe	87
PID 3936 wrote to memory of 2296	3936	JaffaCakes118_26e137a7637690dc59d8e8a2d021faa1.exe	87
PID 3936 wrote to memory of 1632	3936	JaffaCakes118_26e137a7637690dc59d8e8a2d021faa1.exe	90
PID 3936 wrote to memory of 1632	3936	JaffaCakes118_26e137a7637690dc59d8e8a2d021faa1.exe	90
PID 3936 wrote to memory of 1632	3936	JaffaCakes118_26e137a7637690dc59d8e8a2d021faa1.exe	90
PID 3936 wrote to memory of 4344	3936	JaffaCakes118_26e137a7637690dc59d8e8a2d021faa1.exe	92
PID 3936 wrote to memory of 4344	3936	JaffaCakes118_26e137a7637690dc59d8e8a2d021faa1.exe	92
PID 3936 wrote to memory of 4344	3936	JaffaCakes118_26e137a7637690dc59d8e8a2d021faa1.exe	92
PID 3936 wrote to memory of 1872	3936	JaffaCakes118_26e137a7637690dc59d8e8a2d021faa1.exe	94
PID 3936 wrote to memory of 1872	3936	JaffaCakes118_26e137a7637690dc59d8e8a2d021faa1.exe	94
PID 3936 wrote to memory of 1872	3936	JaffaCakes118_26e137a7637690dc59d8e8a2d021faa1.exe	94
PID 3936 wrote to memory of 4252	3936	JaffaCakes118_26e137a7637690dc59d8e8a2d021faa1.exe	97
PID 3936 wrote to memory of 4252	3936	JaffaCakes118_26e137a7637690dc59d8e8a2d021faa1.exe	97
PID 3936 wrote to memory of 4252	3936	JaffaCakes118_26e137a7637690dc59d8e8a2d021faa1.exe	97
PID 876 wrote to memory of 1740	876	xcyqord.exe	103
PID 876 wrote to memory of 1740	876	xcyqord.exe	103
PID 876 wrote to memory of 1740	876	xcyqord.exe	103
PID 876 wrote to memory of 1740	876	xcyqord.exe	103
PID 876 wrote to memory of 1740	876	xcyqord.exe	103

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_26e137a7637690dc59d8e8a2d021faa1.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_26e137a7637690dc59d8e8a2d021faa1.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3936
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\oarvjefh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3076
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xcyqord.exe" C:\Windows\SysWOW64\oarvjefh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2296
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create oarvjefh binPath= "C:\Windows\SysWOW64\oarvjefh\xcyqord.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_26e137a7637690dc59d8e8a2d021faa1.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1632
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description oarvjefh "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4344
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start oarvjefh
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1872
- 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:4252
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3936 -s 1044
  2⤵
  - Program crash
  PID:348

C:\Windows\SysWOW64\oarvjefh\xcyqord.exe
C:\Windows\SysWOW64\oarvjefh\xcyqord.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_26e137a7637690dc59d8e8a2d021faa1.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:876
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1740
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 876 -s 528
  2⤵
  - Program crash
  PID:1320

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3936 -ip 3936
1⤵
PID:2096

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 876 -ip 876
1⤵
PID:3900

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\xcyqord.exe

Filesize
10.9MB

MD5
8ef57b0ee52ad8d343c5febce2c3caf3

SHA1
944e9be261db19754da9c1a097c7ac05f42fb7e9

SHA256
9d4f75a0010bb641b3429acee75c668c42b991c897a80d6ac4ffe84f2cea44c0

SHA512
630fa92ce62e6c9c0e8a6bdda757719c08d9344df5dfbe9867fa775e2d1f71e480e4fd4f6e9d386700f8caefda4577ab230295c209615df493d86c4411dbeb65

Download Submit
memory/876-13-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/876-11-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/876-12-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/876-19-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/1740-14-0x0000000001200000-0x0000000001215000-memory.dmp

Filesize
84KB

Download
memory/1740-16-0x0000000001200000-0x0000000001215000-memory.dmp

Filesize
84KB

Download
memory/1740-17-0x0000000001200000-0x0000000001215000-memory.dmp

Filesize
84KB

Download
memory/3936-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3936-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3936-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3936-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3936-8-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/3936-1-0x00000000004E0000-0x00000000005E0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads