tofsee | 16d197436183fae5ae1855fecb98699c6b82fe6ef73670db6a3fb2452214e0db

General

Target

JaffaCakes118_2fff64b9bc7f064fa98dbda28fb086fa.exe
Size

11.6MB
MD5

2fff64b9bc7f064fa98dbda28fb086fa
SHA1

cf3ef1a589146863fe35c5dccc574f04fa15c78b
SHA256

16d197436183fae5ae1855fecb98699c6b82fe6ef73670db6a3fb2452214e0db
SHA512

8ddd1e0a46ad922459b662b270f0757cfb643a868700df335fe622aefda48b32c428906038d42d1d775473ea2e9eb8e7524575041838b776c36e53be1039a301
SSDEEP

49152:Zgvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvn:

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.ru

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
2132	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\evjcsvsz\ImagePath = "C:\\Windows\\SysWOW64\\evjcsvsz\\yvgljtqn.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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	JaffaCakes118_2fff64b9bc7f064fa98dbda28fb086fa.exe

Deletes itself 1 IoCs

pid	Process
552	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1684	yvgljtqn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1684 set thread context of 552	1684	yvgljtqn.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
4180	sc.exe
376	sc.exe
2612	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
244	1816	WerFault.exe	81
1992	1684	WerFault.exe	92

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	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	yvgljtqn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_2fff64b9bc7f064fa98dbda28fb086fa.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1816 wrote to memory of 4936	1816	JaffaCakes118_2fff64b9bc7f064fa98dbda28fb086fa.exe	82
PID 1816 wrote to memory of 4936	1816	JaffaCakes118_2fff64b9bc7f064fa98dbda28fb086fa.exe	82
PID 1816 wrote to memory of 4936	1816	JaffaCakes118_2fff64b9bc7f064fa98dbda28fb086fa.exe	82
PID 1816 wrote to memory of 2348	1816	JaffaCakes118_2fff64b9bc7f064fa98dbda28fb086fa.exe	84
PID 1816 wrote to memory of 2348	1816	JaffaCakes118_2fff64b9bc7f064fa98dbda28fb086fa.exe	84
PID 1816 wrote to memory of 2348	1816	JaffaCakes118_2fff64b9bc7f064fa98dbda28fb086fa.exe	84
PID 1816 wrote to memory of 4180	1816	JaffaCakes118_2fff64b9bc7f064fa98dbda28fb086fa.exe	86
PID 1816 wrote to memory of 4180	1816	JaffaCakes118_2fff64b9bc7f064fa98dbda28fb086fa.exe	86
PID 1816 wrote to memory of 4180	1816	JaffaCakes118_2fff64b9bc7f064fa98dbda28fb086fa.exe	86
PID 1816 wrote to memory of 376	1816	JaffaCakes118_2fff64b9bc7f064fa98dbda28fb086fa.exe	88
PID 1816 wrote to memory of 376	1816	JaffaCakes118_2fff64b9bc7f064fa98dbda28fb086fa.exe	88
PID 1816 wrote to memory of 376	1816	JaffaCakes118_2fff64b9bc7f064fa98dbda28fb086fa.exe	88
PID 1816 wrote to memory of 2612	1816	JaffaCakes118_2fff64b9bc7f064fa98dbda28fb086fa.exe	90
PID 1816 wrote to memory of 2612	1816	JaffaCakes118_2fff64b9bc7f064fa98dbda28fb086fa.exe	90
PID 1816 wrote to memory of 2612	1816	JaffaCakes118_2fff64b9bc7f064fa98dbda28fb086fa.exe	90
PID 1816 wrote to memory of 2132	1816	JaffaCakes118_2fff64b9bc7f064fa98dbda28fb086fa.exe	93
PID 1816 wrote to memory of 2132	1816	JaffaCakes118_2fff64b9bc7f064fa98dbda28fb086fa.exe	93
PID 1816 wrote to memory of 2132	1816	JaffaCakes118_2fff64b9bc7f064fa98dbda28fb086fa.exe	93
PID 1684 wrote to memory of 552	1684	yvgljtqn.exe	98
PID 1684 wrote to memory of 552	1684	yvgljtqn.exe	98
PID 1684 wrote to memory of 552	1684	yvgljtqn.exe	98
PID 1684 wrote to memory of 552	1684	yvgljtqn.exe	98
PID 1684 wrote to memory of 552	1684	yvgljtqn.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2fff64b9bc7f064fa98dbda28fb086fa.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2fff64b9bc7f064fa98dbda28fb086fa.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1816
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\evjcsvsz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4936
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\yvgljtqn.exe" C:\Windows\SysWOW64\evjcsvsz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2348
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create evjcsvsz binPath= "C:\Windows\SysWOW64\evjcsvsz\yvgljtqn.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2fff64b9bc7f064fa98dbda28fb086fa.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4180
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description evjcsvsz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:376
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start evjcsvsz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2612
- 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:2132
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1816 -s 1040
  2⤵
  - Program crash
  PID:244

C:\Windows\SysWOW64\evjcsvsz\yvgljtqn.exe
C:\Windows\SysWOW64\evjcsvsz\yvgljtqn.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2fff64b9bc7f064fa98dbda28fb086fa.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1684
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:552
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1684 -s 532
  2⤵
  - Program crash
  PID:1992

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 1816 -ip 1816
1⤵
PID:2648

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 1684 -ip 1684
1⤵
PID:3908

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\yvgljtqn.exe

Filesize
10.1MB

MD5
917ff1c1f25ddc516c566e58deae1de9

SHA1
fb8bb44b080a1f4f77d0b624fa330479c34aeb86

SHA256
b14508261adf5fc3b359ad9977ccc6c66139c2b7b6faaed15aa852943cdf7294

SHA512
b179cdbad60b28dc2980f14b8b35a9633b41913dccdad33d2cf3e6e3948a60e72932ba34d3f72f4632b04ddcbfa360551de9a20e9a7cb2337b20ddaf6eaa897b

Download Submit
memory/552-11-0x0000000000EC0000-0x0000000000ED5000-memory.dmp

Filesize
84KB

Download
memory/552-13-0x0000000000EC0000-0x0000000000ED5000-memory.dmp

Filesize
84KB

Download
memory/552-14-0x0000000000EC0000-0x0000000000ED5000-memory.dmp

Filesize
84KB

Download
memory/1684-15-0x0000000000400000-0x0000000002DA4000-memory.dmp

Filesize
41.6MB

Download
memory/1816-1-0x0000000002FF0000-0x00000000030F0000-memory.dmp

Filesize
1024KB

Download
memory/1816-2-0x0000000002F50000-0x0000000002F63000-memory.dmp

Filesize
76KB

Download
memory/1816-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1816-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1816-9-0x0000000002F50000-0x0000000002F63000-memory.dmp

Filesize
76KB

Download
memory/1816-8-0x0000000000400000-0x0000000002DA4000-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