tofsee | d26320c9bf38d0c8da62667729d9c28c8c9a71bb1395bf33dff11b59cda8f6c4

General

Target

JaffaCakes118_32cbda26c9835c1c63f2fed688fb5bb9.exe
Size

10.6MB
MD5

32cbda26c9835c1c63f2fed688fb5bb9
SHA1

1b8b5445b2ff31e5377c0a2297672bf656695777
SHA256

d26320c9bf38d0c8da62667729d9c28c8c9a71bb1395bf33dff11b59cda8f6c4
SHA512

34246c7b622d4ff88c401d25da883962dfba46c878bf9387f3b72942add8ccfe1785b4c5dfbacfcbbc1a3f40e866cc701ce2ff8f2334868ae16b150e61de4e5e
SSDEEP

12288:KQeoegEG/Rl1M7jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjz:KQeGX1M

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
4308	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\cyjaoywp\ImagePath = "C:\\Windows\\SysWOW64\\cyjaoywp\\nugtcpqk.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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	JaffaCakes118_32cbda26c9835c1c63f2fed688fb5bb9.exe

Deletes itself 1 IoCs

pid	Process
2336	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1264	nugtcpqk.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1264 set thread context of 2336	1264	nugtcpqk.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
4084	sc.exe
1216	sc.exe
1596	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
4932	4592	WerFault.exe	83
4740	1264	WerFault.exe	94

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	JaffaCakes118_32cbda26c9835c1c63f2fed688fb5bb9.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	nugtcpqk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
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	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4592 wrote to memory of 1752	4592	JaffaCakes118_32cbda26c9835c1c63f2fed688fb5bb9.exe	84
PID 4592 wrote to memory of 1752	4592	JaffaCakes118_32cbda26c9835c1c63f2fed688fb5bb9.exe	84
PID 4592 wrote to memory of 1752	4592	JaffaCakes118_32cbda26c9835c1c63f2fed688fb5bb9.exe	84
PID 4592 wrote to memory of 1352	4592	JaffaCakes118_32cbda26c9835c1c63f2fed688fb5bb9.exe	86
PID 4592 wrote to memory of 1352	4592	JaffaCakes118_32cbda26c9835c1c63f2fed688fb5bb9.exe	86
PID 4592 wrote to memory of 1352	4592	JaffaCakes118_32cbda26c9835c1c63f2fed688fb5bb9.exe	86
PID 4592 wrote to memory of 4084	4592	JaffaCakes118_32cbda26c9835c1c63f2fed688fb5bb9.exe	88
PID 4592 wrote to memory of 4084	4592	JaffaCakes118_32cbda26c9835c1c63f2fed688fb5bb9.exe	88
PID 4592 wrote to memory of 4084	4592	JaffaCakes118_32cbda26c9835c1c63f2fed688fb5bb9.exe	88
PID 4592 wrote to memory of 1216	4592	JaffaCakes118_32cbda26c9835c1c63f2fed688fb5bb9.exe	90
PID 4592 wrote to memory of 1216	4592	JaffaCakes118_32cbda26c9835c1c63f2fed688fb5bb9.exe	90
PID 4592 wrote to memory of 1216	4592	JaffaCakes118_32cbda26c9835c1c63f2fed688fb5bb9.exe	90
PID 4592 wrote to memory of 1596	4592	JaffaCakes118_32cbda26c9835c1c63f2fed688fb5bb9.exe	92
PID 4592 wrote to memory of 1596	4592	JaffaCakes118_32cbda26c9835c1c63f2fed688fb5bb9.exe	92
PID 4592 wrote to memory of 1596	4592	JaffaCakes118_32cbda26c9835c1c63f2fed688fb5bb9.exe	92
PID 4592 wrote to memory of 4308	4592	JaffaCakes118_32cbda26c9835c1c63f2fed688fb5bb9.exe	95
PID 4592 wrote to memory of 4308	4592	JaffaCakes118_32cbda26c9835c1c63f2fed688fb5bb9.exe	95
PID 4592 wrote to memory of 4308	4592	JaffaCakes118_32cbda26c9835c1c63f2fed688fb5bb9.exe	95
PID 1264 wrote to memory of 2336	1264	nugtcpqk.exe	100
PID 1264 wrote to memory of 2336	1264	nugtcpqk.exe	100
PID 1264 wrote to memory of 2336	1264	nugtcpqk.exe	100
PID 1264 wrote to memory of 2336	1264	nugtcpqk.exe	100
PID 1264 wrote to memory of 2336	1264	nugtcpqk.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_32cbda26c9835c1c63f2fed688fb5bb9.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_32cbda26c9835c1c63f2fed688fb5bb9.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4592
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cyjaoywp\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1752
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nugtcpqk.exe" C:\Windows\SysWOW64\cyjaoywp\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1352
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create cyjaoywp binPath= "C:\Windows\SysWOW64\cyjaoywp\nugtcpqk.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_32cbda26c9835c1c63f2fed688fb5bb9.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4084
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description cyjaoywp "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1216
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start cyjaoywp
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1596
- 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:4308
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4592 -s 1208
  2⤵
  - Program crash
  PID:4932

C:\Windows\SysWOW64\cyjaoywp\nugtcpqk.exe
C:\Windows\SysWOW64\cyjaoywp\nugtcpqk.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_32cbda26c9835c1c63f2fed688fb5bb9.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1264
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2336
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1264 -s 516
  2⤵
  - Program crash
  PID:4740

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4592 -ip 4592
1⤵
PID:4380

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 1264 -ip 1264
1⤵
PID:3752

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\nugtcpqk.exe

Filesize
12.5MB

MD5
252ddb987b0e7309d0914b012557b5c0

SHA1
c2ca6ab9ba0325780b20f7acbc96bd9b32ba24f7

SHA256
5c931d90b2522172c98071bcce2a79d5601bbe8b0cfc80b14bd9a333201c2468

SHA512
62e49f7d9a439c90ad53ce2f0e9593cf45fd94dc364f4be087e474f5e07cc7e8aa8a7af3a5db0f74fc4613932875285d6a3e31327103d186a15d404f83015d7c

Download Submit
memory/1264-16-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/1264-11-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/1264-12-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/1264-19-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/2336-13-0x00000000008B0000-0x00000000008C5000-memory.dmp

Filesize
84KB

Download
memory/2336-15-0x00000000008B0000-0x00000000008C5000-memory.dmp

Filesize
84KB

Download
memory/2336-17-0x00000000008B0000-0x00000000008C5000-memory.dmp

Filesize
84KB

Download
memory/4592-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4592-2-0x0000000000A30000-0x0000000000A43000-memory.dmp

Filesize
76KB

Download
memory/4592-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4592-8-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/4592-9-0x0000000000A30000-0x0000000000A43000-memory.dmp

Filesize
76KB

Download
memory/4592-1-0x00000000008F0000-0x00000000009F0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads