tofsee | aff73b798d917f95cf4c0e08ec0b0ec7af5eccf2669883fff2ea9d8804a1561a

Analysis

max time kernel
146s
max time network
146s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
18-12-2024 17:42

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General

Target

fc832fcf8a81a723b469f0c61ec13921_JaffaCakes118.exe
Size

11.0MB
MD5

fc832fcf8a81a723b469f0c61ec13921
SHA1

8c41e497db55c105b538355863f9b137fd751fd2
SHA256

aff73b798d917f95cf4c0e08ec0b0ec7af5eccf2669883fff2ea9d8804a1561a
SHA512

cb408d24cb73eea90a94bf95faea321bdcde24bfef226253fa69482bdb1584e2abe58069d727d987adc841066c248b0a60d9b08e7a34059eb421268445e9e529
SSDEEP

12288:Nb22XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXn:l2

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

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

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\crcucyvy = "0"	svchost.exe

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
2744	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\crcucyvy\ImagePath = "C:\\Windows\\SysWOW64\\crcucyvy\\rybzaaqe.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2764	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2632	rybzaaqe.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2632 set thread context of 2764	2632	rybzaaqe.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
1484	sc.exe
2784	sc.exe
2720	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	svchost.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	rybzaaqe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fc832fcf8a81a723b469f0c61ec13921_JaffaCakes118.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

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2284 wrote to memory of 2384	2284	fc832fcf8a81a723b469f0c61ec13921_JaffaCakes118.exe	30
PID 2284 wrote to memory of 2384	2284	fc832fcf8a81a723b469f0c61ec13921_JaffaCakes118.exe	30
PID 2284 wrote to memory of 2384	2284	fc832fcf8a81a723b469f0c61ec13921_JaffaCakes118.exe	30
PID 2284 wrote to memory of 2384	2284	fc832fcf8a81a723b469f0c61ec13921_JaffaCakes118.exe	30
PID 2284 wrote to memory of 1080	2284	fc832fcf8a81a723b469f0c61ec13921_JaffaCakes118.exe	33
PID 2284 wrote to memory of 1080	2284	fc832fcf8a81a723b469f0c61ec13921_JaffaCakes118.exe	33
PID 2284 wrote to memory of 1080	2284	fc832fcf8a81a723b469f0c61ec13921_JaffaCakes118.exe	33
PID 2284 wrote to memory of 1080	2284	fc832fcf8a81a723b469f0c61ec13921_JaffaCakes118.exe	33
PID 2284 wrote to memory of 2720	2284	fc832fcf8a81a723b469f0c61ec13921_JaffaCakes118.exe	35
PID 2284 wrote to memory of 2720	2284	fc832fcf8a81a723b469f0c61ec13921_JaffaCakes118.exe	35
PID 2284 wrote to memory of 2720	2284	fc832fcf8a81a723b469f0c61ec13921_JaffaCakes118.exe	35
PID 2284 wrote to memory of 2720	2284	fc832fcf8a81a723b469f0c61ec13921_JaffaCakes118.exe	35
PID 2284 wrote to memory of 1484	2284	fc832fcf8a81a723b469f0c61ec13921_JaffaCakes118.exe	37
PID 2284 wrote to memory of 1484	2284	fc832fcf8a81a723b469f0c61ec13921_JaffaCakes118.exe	37
PID 2284 wrote to memory of 1484	2284	fc832fcf8a81a723b469f0c61ec13921_JaffaCakes118.exe	37
PID 2284 wrote to memory of 1484	2284	fc832fcf8a81a723b469f0c61ec13921_JaffaCakes118.exe	37
PID 2284 wrote to memory of 2784	2284	fc832fcf8a81a723b469f0c61ec13921_JaffaCakes118.exe	39
PID 2284 wrote to memory of 2784	2284	fc832fcf8a81a723b469f0c61ec13921_JaffaCakes118.exe	39
PID 2284 wrote to memory of 2784	2284	fc832fcf8a81a723b469f0c61ec13921_JaffaCakes118.exe	39
PID 2284 wrote to memory of 2784	2284	fc832fcf8a81a723b469f0c61ec13921_JaffaCakes118.exe	39
PID 2284 wrote to memory of 2744	2284	fc832fcf8a81a723b469f0c61ec13921_JaffaCakes118.exe	42
PID 2284 wrote to memory of 2744	2284	fc832fcf8a81a723b469f0c61ec13921_JaffaCakes118.exe	42
PID 2284 wrote to memory of 2744	2284	fc832fcf8a81a723b469f0c61ec13921_JaffaCakes118.exe	42
PID 2284 wrote to memory of 2744	2284	fc832fcf8a81a723b469f0c61ec13921_JaffaCakes118.exe	42
PID 2632 wrote to memory of 2764	2632	rybzaaqe.exe	44
PID 2632 wrote to memory of 2764	2632	rybzaaqe.exe	44
PID 2632 wrote to memory of 2764	2632	rybzaaqe.exe	44
PID 2632 wrote to memory of 2764	2632	rybzaaqe.exe	44
PID 2632 wrote to memory of 2764	2632	rybzaaqe.exe	44
PID 2632 wrote to memory of 2764	2632	rybzaaqe.exe	44

C:\Users\Admin\AppData\Local\Temp\fc832fcf8a81a723b469f0c61ec13921_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fc832fcf8a81a723b469f0c61ec13921_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2284
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\crcucyvy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2384
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rybzaaqe.exe" C:\Windows\SysWOW64\crcucyvy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1080
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create crcucyvy binPath= "C:\Windows\SysWOW64\crcucyvy\rybzaaqe.exe /d\"C:\Users\Admin\AppData\Local\Temp\fc832fcf8a81a723b469f0c61ec13921_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2720
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description crcucyvy "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1484
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start crcucyvy
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2784
- 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:2744

C:\Windows\SysWOW64\crcucyvy\rybzaaqe.exe
C:\Windows\SysWOW64\crcucyvy\rybzaaqe.exe /d"C:\Users\Admin\AppData\Local\Temp\fc832fcf8a81a723b469f0c61ec13921_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2632
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2764

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\rybzaaqe.exe

Filesize
13.9MB

MD5
f94cecb71cadecf9f7b90bd1faa30748

SHA1
36d5eb53608553a609d8fbf90bc1252a0590a789

SHA256
d49336d448bfe338fbc018f6c86e478d8695b2387d81beef730f78258c58f519

SHA512
06b0759ca683cf333262b2425281cdd33780610cc6e141cbe64e6a314cf8b89bec12e96e2b3409ca493629c586a0eee9d9eb59ac04992e56596cd51783fbc77c

Download Submit
memory/2284-1-0x0000000000560000-0x0000000000660000-memory.dmp

Filesize
1024KB

Download
memory/2284-3-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/2284-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2284-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2284-9-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/2632-15-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/2764-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2764-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2764-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2764-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2764-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads