tofsee | a26f7652947374e349cb26848289669160c25d05ae4aa32f7246d06602f5b01f

General

Target

ab5a722cf23e04a0b52b8c5ade4f0b59_JaffaCakes118.exe
Size

13.6MB
MD5

ab5a722cf23e04a0b52b8c5ade4f0b59
SHA1

bb0d8e54b0ce1da9fd8a5a3ed672e1c9c6482679
SHA256

a26f7652947374e349cb26848289669160c25d05ae4aa32f7246d06602f5b01f
SHA512

8bbc4d4a05167247dced49de5a8ca4eecd7e579e9812dfa3245d38916e1fcdf28b4cd6fe7cffa7dc8975222424f342cc37924d822fc6a699a8f8b8d40fb3740f
SSDEEP

3072:mQA1TtRdQBPuEcbBNu28bMEqfCxn2kuIPe7epgDnESZ25jnE26nnipm0ul4p7fLu:mQA1BRCu93f8bMEoFkYUlUUsap8foX

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
4336	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\sxdywhlg\ImagePath = "C:\\Windows\\SysWOW64\\sxdywhlg\\wzsayais.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	ab5a722cf23e04a0b52b8c5ade4f0b59_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
1588	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1528	wzsayais.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1528 set thread context of 1588	1528	wzsayais.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
1496	sc.exe
1420	sc.exe
4512	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

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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ab5a722cf23e04a0b52b8c5ade4f0b59_JaffaCakes118.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	wzsayais.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2544 wrote to memory of 2692	2544	ab5a722cf23e04a0b52b8c5ade4f0b59_JaffaCakes118.exe	83
PID 2544 wrote to memory of 2692	2544	ab5a722cf23e04a0b52b8c5ade4f0b59_JaffaCakes118.exe	83
PID 2544 wrote to memory of 2692	2544	ab5a722cf23e04a0b52b8c5ade4f0b59_JaffaCakes118.exe	83
PID 2544 wrote to memory of 3168	2544	ab5a722cf23e04a0b52b8c5ade4f0b59_JaffaCakes118.exe	85
PID 2544 wrote to memory of 3168	2544	ab5a722cf23e04a0b52b8c5ade4f0b59_JaffaCakes118.exe	85
PID 2544 wrote to memory of 3168	2544	ab5a722cf23e04a0b52b8c5ade4f0b59_JaffaCakes118.exe	85
PID 2544 wrote to memory of 1496	2544	ab5a722cf23e04a0b52b8c5ade4f0b59_JaffaCakes118.exe	87
PID 2544 wrote to memory of 1496	2544	ab5a722cf23e04a0b52b8c5ade4f0b59_JaffaCakes118.exe	87
PID 2544 wrote to memory of 1496	2544	ab5a722cf23e04a0b52b8c5ade4f0b59_JaffaCakes118.exe	87
PID 2544 wrote to memory of 1420	2544	ab5a722cf23e04a0b52b8c5ade4f0b59_JaffaCakes118.exe	90
PID 2544 wrote to memory of 1420	2544	ab5a722cf23e04a0b52b8c5ade4f0b59_JaffaCakes118.exe	90
PID 2544 wrote to memory of 1420	2544	ab5a722cf23e04a0b52b8c5ade4f0b59_JaffaCakes118.exe	90
PID 2544 wrote to memory of 4512	2544	ab5a722cf23e04a0b52b8c5ade4f0b59_JaffaCakes118.exe	94
PID 2544 wrote to memory of 4512	2544	ab5a722cf23e04a0b52b8c5ade4f0b59_JaffaCakes118.exe	94
PID 2544 wrote to memory of 4512	2544	ab5a722cf23e04a0b52b8c5ade4f0b59_JaffaCakes118.exe	94
PID 2544 wrote to memory of 4336	2544	ab5a722cf23e04a0b52b8c5ade4f0b59_JaffaCakes118.exe	97
PID 2544 wrote to memory of 4336	2544	ab5a722cf23e04a0b52b8c5ade4f0b59_JaffaCakes118.exe	97
PID 2544 wrote to memory of 4336	2544	ab5a722cf23e04a0b52b8c5ade4f0b59_JaffaCakes118.exe	97
PID 1528 wrote to memory of 1588	1528	wzsayais.exe	101
PID 1528 wrote to memory of 1588	1528	wzsayais.exe	101
PID 1528 wrote to memory of 1588	1528	wzsayais.exe	101
PID 1528 wrote to memory of 1588	1528	wzsayais.exe	101
PID 1528 wrote to memory of 1588	1528	wzsayais.exe	101

C:\Users\Admin\AppData\Local\Temp\ab5a722cf23e04a0b52b8c5ade4f0b59_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ab5a722cf23e04a0b52b8c5ade4f0b59_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2544
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\sxdywhlg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2692
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wzsayais.exe" C:\Windows\SysWOW64\sxdywhlg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3168
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create sxdywhlg binPath= "C:\Windows\SysWOW64\sxdywhlg\wzsayais.exe /d\"C:\Users\Admin\AppData\Local\Temp\ab5a722cf23e04a0b52b8c5ade4f0b59_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1496
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description sxdywhlg "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1420
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start sxdywhlg
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4512
- 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:4336

C:\Windows\SysWOW64\sxdywhlg\wzsayais.exe
C:\Windows\SysWOW64\sxdywhlg\wzsayais.exe /d"C:\Users\Admin\AppData\Local\Temp\ab5a722cf23e04a0b52b8c5ade4f0b59_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1528
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1588

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\wzsayais.exe

Filesize
11.3MB

MD5
5fc2bdaa9a33521a1d60c6c9c94dc212

SHA1
6d8326e7109cb994b944f706dd7a57138be6563b

SHA256
570e2372f6ec98ffe2f11ff79a539c78ed0627a4215f089bd39c4ec67bc44d56

SHA512
f578ceeacbf553ec26268f6bbb27ed3dff16d1b44b7e08127adf7918fd22b8322e07e22bb3719d775d25ff7135ffbe78f64c986553f27438a04d047020096835

Download Submit
memory/1528-13-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1528-12-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1528-11-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1528-17-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1588-14-0x0000000000140000-0x0000000000155000-memory.dmp

Filesize
84KB

Download
memory/1588-18-0x0000000000140000-0x0000000000155000-memory.dmp

Filesize
84KB

Download
memory/1588-19-0x0000000000140000-0x0000000000155000-memory.dmp

Filesize
84KB

Download
memory/2544-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2544-1-0x0000000000460000-0x0000000000560000-memory.dmp

Filesize
1024KB

Download
memory/2544-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2544-9-0x00000000008A0000-0x00000000008B3000-memory.dmp

Filesize
76KB

Download
memory/2544-8-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2544-2-0x00000000008A0000-0x00000000008B3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads