tofsee | ae2f76e83ece5b39129921f8e40b8e860822c07f6bc9bcb950243ff642f1836c

General

Target

JaffaCakes118_ae2f76e83ece5b39129921f8e40b8e860822c07f6bc9bcb950243ff642f1836c.exe
Size

239KB
MD5

fb89b14c589d0cb97cc349d6a9002b7a
SHA1

5d347475e2737d740061979ecd788a0979defa4a
SHA256

ae2f76e83ece5b39129921f8e40b8e860822c07f6bc9bcb950243ff642f1836c
SHA512

805d48657b5b76dc0b322965be359c24a3a8a98b7e71fa9977275641fd157b4ca35157ed4dbe041af81dbcc0a754217b8c3a57443678357f423cdbd4589c8977
SSDEEP

3072:r8/qMLtEomgzIQ2UChf60a777yx5ZI8iJQjNcxmy6gwH7pgyuwdt:r8CHoLztEhfDI8KGNcFwH4wX

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
3268	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\yvbqaccu\ImagePath = "C:\\Windows\\SysWOW64\\yvbqaccu\\kavhbnrj.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_ae2f76e83ece5b39129921f8e40b8e860822c07f6bc9bcb950243ff642f1836c.exe

Deletes itself 1 IoCs

pid	Process
2376	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2404	kavhbnrj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2404 set thread context of 2376	2404	kavhbnrj.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
5036	sc.exe
1472	sc.exe
2420	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
2344	540	WerFault.exe	82
676	2404	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_ae2f76e83ece5b39129921f8e40b8e860822c07f6bc9bcb950243ff642f1836c.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	kavhbnrj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 540 wrote to memory of 1832	540	JaffaCakes118_ae2f76e83ece5b39129921f8e40b8e860822c07f6bc9bcb950243ff642f1836c.exe	83
PID 540 wrote to memory of 1832	540	JaffaCakes118_ae2f76e83ece5b39129921f8e40b8e860822c07f6bc9bcb950243ff642f1836c.exe	83
PID 540 wrote to memory of 1832	540	JaffaCakes118_ae2f76e83ece5b39129921f8e40b8e860822c07f6bc9bcb950243ff642f1836c.exe	83
PID 540 wrote to memory of 3672	540	JaffaCakes118_ae2f76e83ece5b39129921f8e40b8e860822c07f6bc9bcb950243ff642f1836c.exe	85
PID 540 wrote to memory of 3672	540	JaffaCakes118_ae2f76e83ece5b39129921f8e40b8e860822c07f6bc9bcb950243ff642f1836c.exe	85
PID 540 wrote to memory of 3672	540	JaffaCakes118_ae2f76e83ece5b39129921f8e40b8e860822c07f6bc9bcb950243ff642f1836c.exe	85
PID 540 wrote to memory of 5036	540	JaffaCakes118_ae2f76e83ece5b39129921f8e40b8e860822c07f6bc9bcb950243ff642f1836c.exe	87
PID 540 wrote to memory of 5036	540	JaffaCakes118_ae2f76e83ece5b39129921f8e40b8e860822c07f6bc9bcb950243ff642f1836c.exe	87
PID 540 wrote to memory of 5036	540	JaffaCakes118_ae2f76e83ece5b39129921f8e40b8e860822c07f6bc9bcb950243ff642f1836c.exe	87
PID 540 wrote to memory of 1472	540	JaffaCakes118_ae2f76e83ece5b39129921f8e40b8e860822c07f6bc9bcb950243ff642f1836c.exe	89
PID 540 wrote to memory of 1472	540	JaffaCakes118_ae2f76e83ece5b39129921f8e40b8e860822c07f6bc9bcb950243ff642f1836c.exe	89
PID 540 wrote to memory of 1472	540	JaffaCakes118_ae2f76e83ece5b39129921f8e40b8e860822c07f6bc9bcb950243ff642f1836c.exe	89
PID 540 wrote to memory of 2420	540	JaffaCakes118_ae2f76e83ece5b39129921f8e40b8e860822c07f6bc9bcb950243ff642f1836c.exe	92
PID 540 wrote to memory of 2420	540	JaffaCakes118_ae2f76e83ece5b39129921f8e40b8e860822c07f6bc9bcb950243ff642f1836c.exe	92
PID 540 wrote to memory of 2420	540	JaffaCakes118_ae2f76e83ece5b39129921f8e40b8e860822c07f6bc9bcb950243ff642f1836c.exe	92
PID 540 wrote to memory of 3268	540	JaffaCakes118_ae2f76e83ece5b39129921f8e40b8e860822c07f6bc9bcb950243ff642f1836c.exe	95
PID 540 wrote to memory of 3268	540	JaffaCakes118_ae2f76e83ece5b39129921f8e40b8e860822c07f6bc9bcb950243ff642f1836c.exe	95
PID 540 wrote to memory of 3268	540	JaffaCakes118_ae2f76e83ece5b39129921f8e40b8e860822c07f6bc9bcb950243ff642f1836c.exe	95
PID 2404 wrote to memory of 2376	2404	kavhbnrj.exe	101
PID 2404 wrote to memory of 2376	2404	kavhbnrj.exe	101
PID 2404 wrote to memory of 2376	2404	kavhbnrj.exe	101
PID 2404 wrote to memory of 2376	2404	kavhbnrj.exe	101
PID 2404 wrote to memory of 2376	2404	kavhbnrj.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ae2f76e83ece5b39129921f8e40b8e860822c07f6bc9bcb950243ff642f1836c.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ae2f76e83ece5b39129921f8e40b8e860822c07f6bc9bcb950243ff642f1836c.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:540
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yvbqaccu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1832
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kavhbnrj.exe" C:\Windows\SysWOW64\yvbqaccu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3672
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create yvbqaccu binPath= "C:\Windows\SysWOW64\yvbqaccu\kavhbnrj.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ae2f76e83ece5b39129921f8e40b8e860822c07f6bc9bcb950243ff642f1836c.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5036
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description yvbqaccu "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1472
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start yvbqaccu
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2420
- 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:3268
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 540 -s 652
  2⤵
  - Program crash
  PID:2344

C:\Windows\SysWOW64\yvbqaccu\kavhbnrj.exe
C:\Windows\SysWOW64\yvbqaccu\kavhbnrj.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ae2f76e83ece5b39129921f8e40b8e860822c07f6bc9bcb950243ff642f1836c.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2404
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2376
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2404 -s 532
  2⤵
  - Program crash
  PID:676

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 540 -ip 540
1⤵
PID:3632

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 2404 -ip 2404
1⤵
PID:1544

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\kavhbnrj.exe

Filesize
12.4MB

MD5
c7fdcc2d12b8864e0219f4305a43e446

SHA1
957c2afe6ebcbdfe3502dfa2bcab9d4d7d83e61d

SHA256
61d527e629dadbe857d92c12789845c5ba2cd7403f5a647c6403744622e905ee

SHA512
2445d19fccd7df9a8b567ebaf82303ba36af5b33112555884182eee99c38a301def162f485d83ad7bf749a48eeb1985115a6e172cee6321ac7acc92a93accac1

Download Submit
memory/540-1-0x0000000000AB0000-0x0000000000BB0000-memory.dmp

Filesize
1024KB

Download
memory/540-2-0x0000000000A00000-0x0000000000A13000-memory.dmp

Filesize
76KB

Download
memory/540-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/540-14-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/540-13-0x0000000000A00000-0x0000000000A13000-memory.dmp

Filesize
76KB

Download
memory/540-12-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download
memory/2376-8-0x00000000008E0000-0x00000000008F5000-memory.dmp

Filesize
84KB

Download
memory/2376-16-0x00000000008E0000-0x00000000008F5000-memory.dmp

Filesize
84KB

Download
memory/2376-17-0x00000000008E0000-0x00000000008F5000-memory.dmp

Filesize
84KB

Download
memory/2404-10-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download
memory/2404-11-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads