tofsee | 1088b645163d16ec86ee0a3ec11de3157d364cdcebce858a105520644f9011da

Analysis

max time kernel
145s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
26/12/2024, 23:55

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General

Target
JaffaCakes118_1088b645163d16ec86ee0a3ec11de3157d364cdcebce858a105520644f9011da.exe
Size 287KB
Sample241226-3ypdbsvrew
SHA256 1088b645163d16ec86ee0a3ec11de3157d364cdcebce858a105520644f9011da
MD5 d719adb465300da4191335157512911a
SHA1 83d8620cfceb89a872c91e7b2556e256f6d0b1bc
SHA512 da62eee9cadb8041e67578582516da8c5852ccc1e07bd303ae1101e3f0e35bae89d5edf7f7883147131b08f2ff6908d2542c2f8dd337d016120c927de8c354e0
SSDEEP 3072:TtqVySHUVjW3ji9JHzlay9X5PVr6u0ay/MD3aiGKeVveyc4QbvmVYVjIR8oaPAAj:TtCybs3jinTlaCJPeNZ1elWYVU6aPQN
MD5 SHA1 SHA512 SSDEEP

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
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
1096	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\fkaypsrd\ImagePath = "C:\\Windows\\SysWOW64\\fkaypsrd\\xvfddtcs.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_1088b645163d16ec86ee0a3ec11de3157d364cdcebce858a105520644f9011da.exe

Deletes itself 1 IoCs

pid	Process
2948	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2452	xvfddtcs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2452 set thread context of 2948	2452	xvfddtcs.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
1956	sc.exe
4048	sc.exe
4828	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
2184	5096	WerFault.exe	82
1192	2452	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_1088b645163d16ec86ee0a3ec11de3157d364cdcebce858a105520644f9011da.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	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	xvfddtcs.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 5096 wrote to memory of 4896	5096	JaffaCakes118_1088b645163d16ec86ee0a3ec11de3157d364cdcebce858a105520644f9011da.exe	83
PID 5096 wrote to memory of 4896	5096	JaffaCakes118_1088b645163d16ec86ee0a3ec11de3157d364cdcebce858a105520644f9011da.exe	83
PID 5096 wrote to memory of 4896	5096	JaffaCakes118_1088b645163d16ec86ee0a3ec11de3157d364cdcebce858a105520644f9011da.exe	83
PID 5096 wrote to memory of 3552	5096	JaffaCakes118_1088b645163d16ec86ee0a3ec11de3157d364cdcebce858a105520644f9011da.exe	85
PID 5096 wrote to memory of 3552	5096	JaffaCakes118_1088b645163d16ec86ee0a3ec11de3157d364cdcebce858a105520644f9011da.exe	85
PID 5096 wrote to memory of 3552	5096	JaffaCakes118_1088b645163d16ec86ee0a3ec11de3157d364cdcebce858a105520644f9011da.exe	85
PID 5096 wrote to memory of 1956	5096	JaffaCakes118_1088b645163d16ec86ee0a3ec11de3157d364cdcebce858a105520644f9011da.exe	87
PID 5096 wrote to memory of 1956	5096	JaffaCakes118_1088b645163d16ec86ee0a3ec11de3157d364cdcebce858a105520644f9011da.exe	87
PID 5096 wrote to memory of 1956	5096	JaffaCakes118_1088b645163d16ec86ee0a3ec11de3157d364cdcebce858a105520644f9011da.exe	87
PID 5096 wrote to memory of 4048	5096	JaffaCakes118_1088b645163d16ec86ee0a3ec11de3157d364cdcebce858a105520644f9011da.exe	89
PID 5096 wrote to memory of 4048	5096	JaffaCakes118_1088b645163d16ec86ee0a3ec11de3157d364cdcebce858a105520644f9011da.exe	89
PID 5096 wrote to memory of 4048	5096	JaffaCakes118_1088b645163d16ec86ee0a3ec11de3157d364cdcebce858a105520644f9011da.exe	89
PID 5096 wrote to memory of 4828	5096	JaffaCakes118_1088b645163d16ec86ee0a3ec11de3157d364cdcebce858a105520644f9011da.exe	92
PID 5096 wrote to memory of 4828	5096	JaffaCakes118_1088b645163d16ec86ee0a3ec11de3157d364cdcebce858a105520644f9011da.exe	92
PID 5096 wrote to memory of 4828	5096	JaffaCakes118_1088b645163d16ec86ee0a3ec11de3157d364cdcebce858a105520644f9011da.exe	92
PID 5096 wrote to memory of 1096	5096	JaffaCakes118_1088b645163d16ec86ee0a3ec11de3157d364cdcebce858a105520644f9011da.exe	95
PID 5096 wrote to memory of 1096	5096	JaffaCakes118_1088b645163d16ec86ee0a3ec11de3157d364cdcebce858a105520644f9011da.exe	95
PID 5096 wrote to memory of 1096	5096	JaffaCakes118_1088b645163d16ec86ee0a3ec11de3157d364cdcebce858a105520644f9011da.exe	95
PID 2452 wrote to memory of 2948	2452	xvfddtcs.exe	101
PID 2452 wrote to memory of 2948	2452	xvfddtcs.exe	101
PID 2452 wrote to memory of 2948	2452	xvfddtcs.exe	101
PID 2452 wrote to memory of 2948	2452	xvfddtcs.exe	101
PID 2452 wrote to memory of 2948	2452	xvfddtcs.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1088b645163d16ec86ee0a3ec11de3157d364cdcebce858a105520644f9011da.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1088b645163d16ec86ee0a3ec11de3157d364cdcebce858a105520644f9011da.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5096
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fkaypsrd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4896
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xvfddtcs.exe" C:\Windows\SysWOW64\fkaypsrd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3552
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fkaypsrd binPath= "C:\Windows\SysWOW64\fkaypsrd\xvfddtcs.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1088b645163d16ec86ee0a3ec11de3157d364cdcebce858a105520644f9011da.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1956
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fkaypsrd "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4048
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fkaypsrd
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4828
- 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:1096
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5096 -s 1224
  2⤵
  - Program crash
  PID:2184

C:\Windows\SysWOW64\fkaypsrd\xvfddtcs.exe
C:\Windows\SysWOW64\fkaypsrd\xvfddtcs.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1088b645163d16ec86ee0a3ec11de3157d364cdcebce858a105520644f9011da.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2452
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2948
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2452 -s 512
  2⤵
  - Program crash
  PID:1192

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 5096 -ip 5096
1⤵
PID:1852

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2452 -ip 2452
1⤵
PID:3728

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

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

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

xvfddtcs.exe

Path C:\Users\Admin\AppData\Local\Temp\xvfddtcs.exe
Size 12.0MB
SHA256 4fef5c25d585e4b7b99ffccbd7fceb184980621af5d91cbb395a85c4fad7471a
MD5 2b3d1cd5113eb533f7bbfcc6b27c1660
SHA1 6cfa740770360c055a2db38e4a47e82625253f79
SHA512 c5f94e1839dfc06aaf7dad4e1caa25f9e5a5332aa44de97ebbd203ea7d097b2baf012708560e3d7776ad5f7344e25e979bb53b509833a0b140ddf81a222a9823
SSDEEP 3072:xtqVySHUVjW3ji9JHzlay9X5PVr6u0ay/MD3aiGKeVveyc4QbvmVYVjIR8oaPAAW:xtCybs3jinTlaCJPeNZ1elWYVU6aPQN
MD5 SHA1 SHA512 SSDEEP

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memory/2452-15-0x0000000000400000-0x0000000002B90000-memory.dmp

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memory/2948-11-0x0000000000EE0000-0x0000000000EF5000-memory.dmp

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memory/2948-13-0x0000000000EE0000-0x0000000000EF5000-memory.dmp

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memory/2948-14-0x0000000000EE0000-0x0000000000EF5000-memory.dmp

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memory/5096-1-0x0000000002DA0000-0x0000000002EA0000-memory.dmp

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memory/5096-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

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memory/5096-3-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/5096-10-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/5096-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

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memory/5096-8-0x0000000000400000-0x0000000002B90000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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