tofsee | ff5130d64fbb3dbe15cf06ca1bd28d5ab5983a5fe1af3b6354205b03021b0baa

Analysis

max time kernel
146s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
23/12/2024, 17:50

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General

Target
JaffaCakes118_ff5130d64fbb3dbe15cf06ca1bd28d5ab5983a5fe1af3b6354205b03021b0baa.exe
Size 164KB
Sample241223-wew6hawpcs
SHA256 ff5130d64fbb3dbe15cf06ca1bd28d5ab5983a5fe1af3b6354205b03021b0baa
MD5 683f74e088d0049fb003a0e21ffc9159
SHA1 b2e967a6b07fcacd50b26665e9c7cbb051e2503e
SHA512 4eee32dd38697b6e28f17235aa0a020d0996cc22b35bb9bd9f46cec8c64f1f2b79394c183c21a2f30d6c9a7c3b5074ac29ded88693e6fc59d4c457a8e6ec3ff9
SSDEEP 3072:vvsXt4/tRBX7iK3yV26O6a9vh5LTEnsBfQS9H6S:vkXS533OE9j0Ea
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
2268	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\fhlexcez\ImagePath = "C:\\Windows\\SysWOW64\\fhlexcez\\kwdxcivd.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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	JaffaCakes118_ff5130d64fbb3dbe15cf06ca1bd28d5ab5983a5fe1af3b6354205b03021b0baa.exe

Deletes itself 1 IoCs

pid	Process
2936	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1916	kwdxcivd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1916 set thread context of 2936	1916	kwdxcivd.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
4824	sc.exe
1672	sc.exe
3868	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
1848	1764	WerFault.exe	82
3436	1916	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	kwdxcivd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_ff5130d64fbb3dbe15cf06ca1bd28d5ab5983a5fe1af3b6354205b03021b0baa.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	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1764 wrote to memory of 4412	1764	JaffaCakes118_ff5130d64fbb3dbe15cf06ca1bd28d5ab5983a5fe1af3b6354205b03021b0baa.exe	83
PID 1764 wrote to memory of 4412	1764	JaffaCakes118_ff5130d64fbb3dbe15cf06ca1bd28d5ab5983a5fe1af3b6354205b03021b0baa.exe	83
PID 1764 wrote to memory of 4412	1764	JaffaCakes118_ff5130d64fbb3dbe15cf06ca1bd28d5ab5983a5fe1af3b6354205b03021b0baa.exe	83
PID 1764 wrote to memory of 380	1764	JaffaCakes118_ff5130d64fbb3dbe15cf06ca1bd28d5ab5983a5fe1af3b6354205b03021b0baa.exe	85
PID 1764 wrote to memory of 380	1764	JaffaCakes118_ff5130d64fbb3dbe15cf06ca1bd28d5ab5983a5fe1af3b6354205b03021b0baa.exe	85
PID 1764 wrote to memory of 380	1764	JaffaCakes118_ff5130d64fbb3dbe15cf06ca1bd28d5ab5983a5fe1af3b6354205b03021b0baa.exe	85
PID 1764 wrote to memory of 4824	1764	JaffaCakes118_ff5130d64fbb3dbe15cf06ca1bd28d5ab5983a5fe1af3b6354205b03021b0baa.exe	88
PID 1764 wrote to memory of 4824	1764	JaffaCakes118_ff5130d64fbb3dbe15cf06ca1bd28d5ab5983a5fe1af3b6354205b03021b0baa.exe	88
PID 1764 wrote to memory of 4824	1764	JaffaCakes118_ff5130d64fbb3dbe15cf06ca1bd28d5ab5983a5fe1af3b6354205b03021b0baa.exe	88
PID 1764 wrote to memory of 1672	1764	JaffaCakes118_ff5130d64fbb3dbe15cf06ca1bd28d5ab5983a5fe1af3b6354205b03021b0baa.exe	90
PID 1764 wrote to memory of 1672	1764	JaffaCakes118_ff5130d64fbb3dbe15cf06ca1bd28d5ab5983a5fe1af3b6354205b03021b0baa.exe	90
PID 1764 wrote to memory of 1672	1764	JaffaCakes118_ff5130d64fbb3dbe15cf06ca1bd28d5ab5983a5fe1af3b6354205b03021b0baa.exe	90
PID 1764 wrote to memory of 3868	1764	JaffaCakes118_ff5130d64fbb3dbe15cf06ca1bd28d5ab5983a5fe1af3b6354205b03021b0baa.exe	92
PID 1764 wrote to memory of 3868	1764	JaffaCakes118_ff5130d64fbb3dbe15cf06ca1bd28d5ab5983a5fe1af3b6354205b03021b0baa.exe	92
PID 1764 wrote to memory of 3868	1764	JaffaCakes118_ff5130d64fbb3dbe15cf06ca1bd28d5ab5983a5fe1af3b6354205b03021b0baa.exe	92
PID 1764 wrote to memory of 2268	1764	JaffaCakes118_ff5130d64fbb3dbe15cf06ca1bd28d5ab5983a5fe1af3b6354205b03021b0baa.exe	95
PID 1764 wrote to memory of 2268	1764	JaffaCakes118_ff5130d64fbb3dbe15cf06ca1bd28d5ab5983a5fe1af3b6354205b03021b0baa.exe	95
PID 1764 wrote to memory of 2268	1764	JaffaCakes118_ff5130d64fbb3dbe15cf06ca1bd28d5ab5983a5fe1af3b6354205b03021b0baa.exe	95
PID 1916 wrote to memory of 2936	1916	kwdxcivd.exe	101
PID 1916 wrote to memory of 2936	1916	kwdxcivd.exe	101
PID 1916 wrote to memory of 2936	1916	kwdxcivd.exe	101
PID 1916 wrote to memory of 2936	1916	kwdxcivd.exe	101
PID 1916 wrote to memory of 2936	1916	kwdxcivd.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ff5130d64fbb3dbe15cf06ca1bd28d5ab5983a5fe1af3b6354205b03021b0baa.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ff5130d64fbb3dbe15cf06ca1bd28d5ab5983a5fe1af3b6354205b03021b0baa.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1764
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fhlexcez\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4412
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kwdxcivd.exe" C:\Windows\SysWOW64\fhlexcez\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:380
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fhlexcez binPath= "C:\Windows\SysWOW64\fhlexcez\kwdxcivd.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ff5130d64fbb3dbe15cf06ca1bd28d5ab5983a5fe1af3b6354205b03021b0baa.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4824
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fhlexcez "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1672
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fhlexcez
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3868
- 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:2268
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1764 -s 1036
  2⤵
  - Program crash
  PID:1848

C:\Windows\SysWOW64\fhlexcez\kwdxcivd.exe
C:\Windows\SysWOW64\fhlexcez\kwdxcivd.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ff5130d64fbb3dbe15cf06ca1bd28d5ab5983a5fe1af3b6354205b03021b0baa.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1916
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2936
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1916 -s 508
  2⤵
  - Program crash
  PID:3436

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1764 -ip 1764
1⤵
PID:5116

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 1916 -ip 1916
1⤵
PID:1028

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

kwdxcivd.exe

Path C:\Users\Admin\AppData\Local\Temp\kwdxcivd.exe
Size 14.9MB
SHA256 cd0e0e3482cbe3eefef59363f071077b7b5077ff953ac880f204f65190ae536e
MD5 84edb3532c72e2e897d72626e8f24b62
SHA1 e522a6e4b6b26d0dc2483954c9319c4689f91605
SHA512 330f8d1c4fb5d85d4761abfa463e8472f0a33798d16ee56cd02f3cc8a0df2ea92ea4c3a7537f3e827353fcf53cf853aaab413c7c40ef9986ccbec0ca3f7aa5f0
SSDEEP 24576:vHzje5e5e5e5e5e5e5e5e5e5e5e5e5e5e5e5e5e5e5e5e5e5e5e5e5e5e5e5e5eo:fz
MD5 SHA1 SHA512 SSDEEP

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memory/1764-8-0x0000000000400000-0x00000000004AF000-memory.dmp

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memory/1764-3-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/1764-2-0x0000000000710000-0x0000000000723000-memory.dmp

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memory/1764-10-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/1764-9-0x0000000000710000-0x0000000000723000-memory.dmp

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memory/1764-1-0x0000000000730000-0x0000000000830000-memory.dmp

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memory/1916-11-0x0000000000400000-0x00000000004AF000-memory.dmp

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memory/1916-12-0x0000000000400000-0x00000000004AF000-memory.dmp

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memory/1916-13-0x0000000000400000-0x00000000004AF000-memory.dmp

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memory/1916-18-0x0000000000400000-0x00000000004AF000-memory.dmp

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memory/2936-14-0x0000000000420000-0x0000000000435000-memory.dmp

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memory/2936-16-0x0000000000420000-0x0000000000435000-memory.dmp

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memory/2936-19-0x0000000000420000-0x0000000000435000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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