tofsee | 9134f3d1adc590ca97d990d7d26f0d20fbf3d82623be83525e4e452a6ed468b3

General

Target

49af3bb83fcdf39ea968a2c246903bbc_JaffaCakes118.exe
Size

12.0MB
MD5

49af3bb83fcdf39ea968a2c246903bbc
SHA1

ffe28ac64c0d49e0d2c3feed88167e92510ef3fa
SHA256

9134f3d1adc590ca97d990d7d26f0d20fbf3d82623be83525e4e452a6ed468b3
SHA512

77fbc3b76e16e1a791617d3427b9691e92adf8297ee88f7dc2e262551d005e05a3324ccd345b428860985850c1505b0a84b443b0ad64e703f1e82cd03431d1dd
SSDEEP

12288:Fb22XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX3:d2

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
2656	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\vtfkggeu\ImagePath = "C:\\Windows\\SysWOW64\\vtfkggeu\\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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	49af3bb83fcdf39ea968a2c246903bbc_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2012	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4868	xcyqord.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4868 set thread context of 2012	4868	xcyqord.exe	110

Launches sc.exe 3 IoCs

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

pid	Process
4276	sc.exe
4168	sc.exe
4620	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	49af3bb83fcdf39ea968a2c246903bbc_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xcyqord.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2308 wrote to memory of 4044	2308	49af3bb83fcdf39ea968a2c246903bbc_JaffaCakes118.exe	91
PID 2308 wrote to memory of 4044	2308	49af3bb83fcdf39ea968a2c246903bbc_JaffaCakes118.exe	91
PID 2308 wrote to memory of 4044	2308	49af3bb83fcdf39ea968a2c246903bbc_JaffaCakes118.exe	91
PID 2308 wrote to memory of 3744	2308	49af3bb83fcdf39ea968a2c246903bbc_JaffaCakes118.exe	95
PID 2308 wrote to memory of 3744	2308	49af3bb83fcdf39ea968a2c246903bbc_JaffaCakes118.exe	95
PID 2308 wrote to memory of 3744	2308	49af3bb83fcdf39ea968a2c246903bbc_JaffaCakes118.exe	95
PID 2308 wrote to memory of 4276	2308	49af3bb83fcdf39ea968a2c246903bbc_JaffaCakes118.exe	97
PID 2308 wrote to memory of 4276	2308	49af3bb83fcdf39ea968a2c246903bbc_JaffaCakes118.exe	97
PID 2308 wrote to memory of 4276	2308	49af3bb83fcdf39ea968a2c246903bbc_JaffaCakes118.exe	97
PID 2308 wrote to memory of 4168	2308	49af3bb83fcdf39ea968a2c246903bbc_JaffaCakes118.exe	99
PID 2308 wrote to memory of 4168	2308	49af3bb83fcdf39ea968a2c246903bbc_JaffaCakes118.exe	99
PID 2308 wrote to memory of 4168	2308	49af3bb83fcdf39ea968a2c246903bbc_JaffaCakes118.exe	99
PID 2308 wrote to memory of 4620	2308	49af3bb83fcdf39ea968a2c246903bbc_JaffaCakes118.exe	101
PID 2308 wrote to memory of 4620	2308	49af3bb83fcdf39ea968a2c246903bbc_JaffaCakes118.exe	101
PID 2308 wrote to memory of 4620	2308	49af3bb83fcdf39ea968a2c246903bbc_JaffaCakes118.exe	101
PID 2308 wrote to memory of 2656	2308	49af3bb83fcdf39ea968a2c246903bbc_JaffaCakes118.exe	104
PID 2308 wrote to memory of 2656	2308	49af3bb83fcdf39ea968a2c246903bbc_JaffaCakes118.exe	104
PID 2308 wrote to memory of 2656	2308	49af3bb83fcdf39ea968a2c246903bbc_JaffaCakes118.exe	104
PID 4868 wrote to memory of 2012	4868	xcyqord.exe	110
PID 4868 wrote to memory of 2012	4868	xcyqord.exe	110
PID 4868 wrote to memory of 2012	4868	xcyqord.exe	110
PID 4868 wrote to memory of 2012	4868	xcyqord.exe	110
PID 4868 wrote to memory of 2012	4868	xcyqord.exe	110

C:\Users\Admin\AppData\Local\Temp\49af3bb83fcdf39ea968a2c246903bbc_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\49af3bb83fcdf39ea968a2c246903bbc_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2308
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vtfkggeu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4044
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xcyqord.exe" C:\Windows\SysWOW64\vtfkggeu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3744
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create vtfkggeu binPath= "C:\Windows\SysWOW64\vtfkggeu\xcyqord.exe /d\"C:\Users\Admin\AppData\Local\Temp\49af3bb83fcdf39ea968a2c246903bbc_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4276
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description vtfkggeu "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4168
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start vtfkggeu
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4620
- 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:2656

C:\Windows\SysWOW64\vtfkggeu\xcyqord.exe
C:\Windows\SysWOW64\vtfkggeu\xcyqord.exe /d"C:\Users\Admin\AppData\Local\Temp\49af3bb83fcdf39ea968a2c246903bbc_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4868
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2012

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\xcyqord.exe

Filesize
10.4MB

MD5
f5e45dec131546e6af95a50f745900f5

SHA1
f0e1385a4fdc5ac6dff78501119e2b76d31b7433

SHA256
e0d6498bf5fba5cdcbb52dfe4522d0c802c9db704e0b43b945de3fb08819aabe

SHA512
8357a1770d10250c56bf7dc88e30e90e344b547a2cf5f16d94e302eaddb6e5e3a647fbd79a7a94866cabacd7c148d3c1642231d03475fc458b9fb46448aa1cfa

Download Submit
memory/2012-14-0x0000000000EC0000-0x0000000000ED5000-memory.dmp

Filesize
84KB

Download
memory/2012-19-0x0000000000EC0000-0x0000000000ED5000-memory.dmp

Filesize
84KB

Download
memory/2012-18-0x0000000000EC0000-0x0000000000ED5000-memory.dmp

Filesize
84KB

Download
memory/2308-8-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/2308-9-0x0000000000660000-0x0000000000673000-memory.dmp

Filesize
76KB

Download
memory/2308-1-0x00000000006D0000-0x00000000007D0000-memory.dmp

Filesize
1024KB

Download
memory/2308-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2308-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2308-2-0x0000000000660000-0x0000000000673000-memory.dmp

Filesize
76KB

Download
memory/4868-11-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/4868-12-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/4868-13-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/4868-16-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads