tofsee | 274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3

General

Target

JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe
Size

317KB
MD5

0e2a6c2b461933c7a1e7a048ee1f5b25
SHA1

a8fede94148338f469399d62fe5f72aad45f8699
SHA256

274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3
SHA512

95f3bdd286a185e3cd2c3e7b5bec5f53cfbf262254618527f8a183ac1055a581b1dc612b0464da76de3241abd8ca68d6f0779a59a9c06a6db37fb1a64bbc76ad
SSDEEP

6144:jOTe/jixL46Z2Lbf/j9A1wn5qJL6d54POOhxxdeTr/ekI:jyc6Z2LjjCL6dIzxd6L

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
3612	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\bjzihkxx\ImagePath = "C:\\Windows\\SysWOW64\\bjzihkxx\\gvieqpiu.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_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe

Deletes itself 1 IoCs

pid	Process
4804	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1572	gvieqpiu.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1572 set thread context of 4804	1572	gvieqpiu.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
3608	sc.exe
1396	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
1156	1168	WerFault.exe	82
2920	1572	WerFault.exe	93

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	gvieqpiu.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1168 wrote to memory of 724	1168	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	83
PID 1168 wrote to memory of 724	1168	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	83
PID 1168 wrote to memory of 724	1168	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	83
PID 1168 wrote to memory of 620	1168	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	85
PID 1168 wrote to memory of 620	1168	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	85
PID 1168 wrote to memory of 620	1168	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	85
PID 1168 wrote to memory of 3608	1168	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	87
PID 1168 wrote to memory of 3608	1168	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	87
PID 1168 wrote to memory of 3608	1168	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	87
PID 1168 wrote to memory of 1396	1168	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	89
PID 1168 wrote to memory of 1396	1168	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	89
PID 1168 wrote to memory of 1396	1168	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	89
PID 1168 wrote to memory of 2612	1168	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	91
PID 1168 wrote to memory of 2612	1168	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	91
PID 1168 wrote to memory of 2612	1168	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	91
PID 1168 wrote to memory of 3612	1168	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	94
PID 1168 wrote to memory of 3612	1168	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	94
PID 1168 wrote to memory of 3612	1168	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	94
PID 1572 wrote to memory of 4804	1572	gvieqpiu.exe	100
PID 1572 wrote to memory of 4804	1572	gvieqpiu.exe	100
PID 1572 wrote to memory of 4804	1572	gvieqpiu.exe	100
PID 1572 wrote to memory of 4804	1572	gvieqpiu.exe	100
PID 1572 wrote to memory of 4804	1572	gvieqpiu.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1168
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bjzihkxx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:724
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gvieqpiu.exe" C:\Windows\SysWOW64\bjzihkxx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:620
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bjzihkxx binPath= "C:\Windows\SysWOW64\bjzihkxx\gvieqpiu.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3608
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bjzihkxx "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1396
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bjzihkxx
  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:3612
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1168 -s 1036
  2⤵
  - Program crash
  PID:1156

C:\Windows\SysWOW64\bjzihkxx\gvieqpiu.exe
C:\Windows\SysWOW64\bjzihkxx\gvieqpiu.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1572
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4804
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1572 -s 512
  2⤵
  - Program crash
  PID:2920

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1168 -ip 1168
1⤵
PID:2860

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1572 -ip 1572
1⤵
PID:4004

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\gvieqpiu.exe

Filesize
12.9MB

MD5
c4ab899eda6c9d4596605cf4e88979e7

SHA1
ad04db4f93fe4a4ee175a87ebf7737375069d921

SHA256
467c0a5ef5f3e21088aa9f4836964fae81f9f1679dce8e1fb2c1904849b0deed

SHA512
cd862809930179334a2cdbfa8f30cfe8e95417d67e972191d3e4ec7a197d03d838cc0dc1d3d9f1309c412e4a1b13eb0016d5496db898906ac9e933587d6b4ef9

Download Submit
memory/1168-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/1168-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1168-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/1168-8-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/1168-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1168-1-0x0000000000480000-0x0000000000580000-memory.dmp

Filesize
1024KB

Download
memory/1572-11-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/1572-13-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/1572-12-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/1572-19-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/4804-14-0x0000000000550000-0x0000000000565000-memory.dmp

Filesize
84KB

Download
memory/4804-16-0x0000000000550000-0x0000000000565000-memory.dmp

Filesize
84KB

Download
memory/4804-17-0x0000000000550000-0x0000000000565000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads