tofsee | d6f43f31fce6ae40ebfad16c8c01d765a965a2aae9907ffcaefe293031356a75

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
18/04/2024, 16:06

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
f8518c38784e9b78cae4bc2b90bfc289_JaffaCakes118.exe
Size 14.7MB
Sample240418-tkcb6shc69
SHA256 d6f43f31fce6ae40ebfad16c8c01d765a965a2aae9907ffcaefe293031356a75
MD5 f8518c38784e9b78cae4bc2b90bfc289
SHA1 1a58456029f8a0af14172b797150241a2565b8b9
SHA512 53489166d21faceae92bd7a48995b0fb03009b3b50cfaf05f0e03c78c372db2e810167fd406ab8cc1456e6874418bebb5b94e16450c61b86120e887a2cff3b44
SSDEEP 12288:khq8okPz+6/uWlQJVppppppppppppppppppppppppppppppppppppppppppppppB:dSz+R
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tofsee evasion persistence 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
Creates new service(s) 1 TTPs
persistence

Windows Service
T1543.003

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
3272	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\kzaipoty\ImagePath = "C:\\Windows\\SysWOW64\\kzaipoty\\hxseykog.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-1-5-21-1826666146-2574340311-1877551059-1000\Control Panel\International\Geo\Nation	f8518c38784e9b78cae4bc2b90bfc289_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2780	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4508	hxseykog.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4508 set thread context of 2780	4508	hxseykog.exe	104

Launches sc.exe 3 IoCs

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

pid	Process
4516	sc.exe
752	sc.exe
3144	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3696	3156	WerFault.exe	83
2220	4508	WerFault.exe	99

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3156 wrote to memory of 1088	3156	f8518c38784e9b78cae4bc2b90bfc289_JaffaCakes118.exe	88
PID 3156 wrote to memory of 1088	3156	f8518c38784e9b78cae4bc2b90bfc289_JaffaCakes118.exe	88
PID 3156 wrote to memory of 1088	3156	f8518c38784e9b78cae4bc2b90bfc289_JaffaCakes118.exe	88
PID 3156 wrote to memory of 2684	3156	f8518c38784e9b78cae4bc2b90bfc289_JaffaCakes118.exe	90
PID 3156 wrote to memory of 2684	3156	f8518c38784e9b78cae4bc2b90bfc289_JaffaCakes118.exe	90
PID 3156 wrote to memory of 2684	3156	f8518c38784e9b78cae4bc2b90bfc289_JaffaCakes118.exe	90
PID 3156 wrote to memory of 4516	3156	f8518c38784e9b78cae4bc2b90bfc289_JaffaCakes118.exe	93
PID 3156 wrote to memory of 4516	3156	f8518c38784e9b78cae4bc2b90bfc289_JaffaCakes118.exe	93
PID 3156 wrote to memory of 4516	3156	f8518c38784e9b78cae4bc2b90bfc289_JaffaCakes118.exe	93
PID 3156 wrote to memory of 752	3156	f8518c38784e9b78cae4bc2b90bfc289_JaffaCakes118.exe	95
PID 3156 wrote to memory of 752	3156	f8518c38784e9b78cae4bc2b90bfc289_JaffaCakes118.exe	95
PID 3156 wrote to memory of 752	3156	f8518c38784e9b78cae4bc2b90bfc289_JaffaCakes118.exe	95
PID 3156 wrote to memory of 3144	3156	f8518c38784e9b78cae4bc2b90bfc289_JaffaCakes118.exe	97
PID 3156 wrote to memory of 3144	3156	f8518c38784e9b78cae4bc2b90bfc289_JaffaCakes118.exe	97
PID 3156 wrote to memory of 3144	3156	f8518c38784e9b78cae4bc2b90bfc289_JaffaCakes118.exe	97
PID 3156 wrote to memory of 3272	3156	f8518c38784e9b78cae4bc2b90bfc289_JaffaCakes118.exe	100
PID 3156 wrote to memory of 3272	3156	f8518c38784e9b78cae4bc2b90bfc289_JaffaCakes118.exe	100
PID 3156 wrote to memory of 3272	3156	f8518c38784e9b78cae4bc2b90bfc289_JaffaCakes118.exe	100
PID 4508 wrote to memory of 2780	4508	hxseykog.exe	104
PID 4508 wrote to memory of 2780	4508	hxseykog.exe	104
PID 4508 wrote to memory of 2780	4508	hxseykog.exe	104
PID 4508 wrote to memory of 2780	4508	hxseykog.exe	104
PID 4508 wrote to memory of 2780	4508	hxseykog.exe	104

C:\Users\Admin\AppData\Local\Temp\f8518c38784e9b78cae4bc2b90bfc289_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f8518c38784e9b78cae4bc2b90bfc289_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3156
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kzaipoty\
  2⤵
  PID:1088
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\hxseykog.exe" C:\Windows\SysWOW64\kzaipoty\
  2⤵
  PID:2684
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create kzaipoty binPath= "C:\Windows\SysWOW64\kzaipoty\hxseykog.exe /d\"C:\Users\Admin\AppData\Local\Temp\f8518c38784e9b78cae4bc2b90bfc289_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:4516
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description kzaipoty "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:752
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start kzaipoty
  2⤵
  - Launches sc.exe
  PID:3144
- 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
  PID:3272
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3156 -s 600
  2⤵
  - Program crash
  PID:3696

C:\Windows\SysWOW64\kzaipoty\hxseykog.exe
C:\Windows\SysWOW64\kzaipoty\hxseykog.exe /d"C:\Users\Admin\AppData\Local\Temp\f8518c38784e9b78cae4bc2b90bfc289_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4508
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:2780
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4508 -s 520
  2⤵
  - Program crash
  PID:2220

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 3156 -ip 3156
1⤵
PID:2020

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4508 -ip 4508
1⤵
PID:4608

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

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

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

hxseykog.exe

Path C:\Users\Admin\AppData\Local\Temp\hxseykog.exe
Size 10.2MB
SHA256 dbd9b62863db6c1043c5fa76ae28419e81fe1769fa9b074a05564a8289554523
MD5 948003a49f9207efa930d85a1118e36d
SHA1 095ddf530c9b47693ca0e0832f5a551f717cdfb8
SHA512 d2b8ef1e7be37530de60d3d6f37a24e863f27487e6327e5b300104b7bec66c606ea9a54ac170fb0cda37494443cdc5583c00d5abd4c108cf58e8c1f0075083a6
SSDEEP 12288:zhq8okPz+6/uWlQJVppppppppppppppppppppppppppppppppppppppppppppppF:ASz+R
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/2780-15-0x0000000000600000-0x0000000000615000-memory.dmp

Download

memory/2780-12-0x0000000000600000-0x0000000000615000-memory.dmp

Download

memory/2780-16-0x0000000000600000-0x0000000000615000-memory.dmp

Download

memory/2780-17-0x0000000000600000-0x0000000000615000-memory.dmp

Download

memory/2780-19-0x0000000000600000-0x0000000000615000-memory.dmp

Download

memory/3156-4-0x0000000000400000-0x000000000086F000-memory.dmp

Download

memory/3156-2-0x00000000008A0000-0x00000000008B3000-memory.dmp

Download

memory/3156-8-0x0000000000400000-0x000000000086F000-memory.dmp

Download

memory/3156-9-0x00000000008A0000-0x00000000008B3000-memory.dmp

Download

memory/3156-1-0x0000000000930000-0x0000000000A30000-memory.dmp

Download

memory/4508-10-0x00000000009B0000-0x0000000000AB0000-memory.dmp

Download

memory/4508-11-0x0000000000400000-0x000000000086F000-memory.dmp

Download

memory/4508-18-0x0000000000400000-0x000000000086F000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads