tofsee | 1f4a7eab9284a9e0f2ba200c3c9c113192b6626170cb9713263e5c9f45671644

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
07/12/2024, 04:38

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General

Target
d0b0f6e0bbc2b182e836b7d40fa46d0e_JaffaCakes118.exe
Size 11.4MB
Sample241207-e9wpsawpgs
SHA256 1f4a7eab9284a9e0f2ba200c3c9c113192b6626170cb9713263e5c9f45671644
MD5 d0b0f6e0bbc2b182e836b7d40fa46d0e
SHA1 4832ba6cb5d2f38e729603de44f0c057cd5ec8e0
SHA512 798ab4f216bc335678ab7ebb706303fd1b94529cfc7605c276917fd0fa461754cc211fdcf9d9f0c917a125f2d7891d94e93c26c97cc90e861fb61cc11004cad5
SSDEEP 12288:uUR4+0lGrUPDHQahTzrdCcrFy55555555555555555555555555555555555555H:ul+PrmrXrd1p
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
4332	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\ylteetl\ImagePath = "C:\\Windows\\SysWOW64\\ylteetl\\lqmecfr.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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	d0b0f6e0bbc2b182e836b7d40fa46d0e_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
3484	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4548	lqmecfr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4548 set thread context of 3484	4548	lqmecfr.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
2780	sc.exe
744	sc.exe
1288	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
1304	4888	WerFault.exe	82
4840	4548	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	lqmecfr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d0b0f6e0bbc2b182e836b7d40fa46d0e_JaffaCakes118.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4888 wrote to memory of 4540	4888	d0b0f6e0bbc2b182e836b7d40fa46d0e_JaffaCakes118.exe	83
PID 4888 wrote to memory of 4540	4888	d0b0f6e0bbc2b182e836b7d40fa46d0e_JaffaCakes118.exe	83
PID 4888 wrote to memory of 4540	4888	d0b0f6e0bbc2b182e836b7d40fa46d0e_JaffaCakes118.exe	83
PID 4888 wrote to memory of 1764	4888	d0b0f6e0bbc2b182e836b7d40fa46d0e_JaffaCakes118.exe	85
PID 4888 wrote to memory of 1764	4888	d0b0f6e0bbc2b182e836b7d40fa46d0e_JaffaCakes118.exe	85
PID 4888 wrote to memory of 1764	4888	d0b0f6e0bbc2b182e836b7d40fa46d0e_JaffaCakes118.exe	85
PID 4888 wrote to memory of 2780	4888	d0b0f6e0bbc2b182e836b7d40fa46d0e_JaffaCakes118.exe	87
PID 4888 wrote to memory of 2780	4888	d0b0f6e0bbc2b182e836b7d40fa46d0e_JaffaCakes118.exe	87
PID 4888 wrote to memory of 2780	4888	d0b0f6e0bbc2b182e836b7d40fa46d0e_JaffaCakes118.exe	87
PID 4888 wrote to memory of 744	4888	d0b0f6e0bbc2b182e836b7d40fa46d0e_JaffaCakes118.exe	90
PID 4888 wrote to memory of 744	4888	d0b0f6e0bbc2b182e836b7d40fa46d0e_JaffaCakes118.exe	90
PID 4888 wrote to memory of 744	4888	d0b0f6e0bbc2b182e836b7d40fa46d0e_JaffaCakes118.exe	90
PID 4888 wrote to memory of 1288	4888	d0b0f6e0bbc2b182e836b7d40fa46d0e_JaffaCakes118.exe	92
PID 4888 wrote to memory of 1288	4888	d0b0f6e0bbc2b182e836b7d40fa46d0e_JaffaCakes118.exe	92
PID 4888 wrote to memory of 1288	4888	d0b0f6e0bbc2b182e836b7d40fa46d0e_JaffaCakes118.exe	92
PID 4888 wrote to memory of 4332	4888	d0b0f6e0bbc2b182e836b7d40fa46d0e_JaffaCakes118.exe	95
PID 4888 wrote to memory of 4332	4888	d0b0f6e0bbc2b182e836b7d40fa46d0e_JaffaCakes118.exe	95
PID 4888 wrote to memory of 4332	4888	d0b0f6e0bbc2b182e836b7d40fa46d0e_JaffaCakes118.exe	95
PID 4548 wrote to memory of 3484	4548	lqmecfr.exe	101
PID 4548 wrote to memory of 3484	4548	lqmecfr.exe	101
PID 4548 wrote to memory of 3484	4548	lqmecfr.exe	101
PID 4548 wrote to memory of 3484	4548	lqmecfr.exe	101
PID 4548 wrote to memory of 3484	4548	lqmecfr.exe	101

C:\Users\Admin\AppData\Local\Temp\d0b0f6e0bbc2b182e836b7d40fa46d0e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d0b0f6e0bbc2b182e836b7d40fa46d0e_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4888
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ylteetl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4540
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\lqmecfr.exe" C:\Windows\SysWOW64\ylteetl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1764
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ylteetl binPath= "C:\Windows\SysWOW64\ylteetl\lqmecfr.exe /d\"C:\Users\Admin\AppData\Local\Temp\d0b0f6e0bbc2b182e836b7d40fa46d0e_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2780
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ylteetl "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:744
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ylteetl
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1288
- 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:4332
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4888 -s 1036
  2⤵
  - Program crash
  PID:1304

C:\Windows\SysWOW64\ylteetl\lqmecfr.exe
C:\Windows\SysWOW64\ylteetl\lqmecfr.exe /d"C:\Users\Admin\AppData\Local\Temp\d0b0f6e0bbc2b182e836b7d40fa46d0e_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4548
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3484
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4548 -s 512
  2⤵
  - Program crash
  PID:4840

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4888 -ip 4888
1⤵
PID:4276

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4548 -ip 4548
1⤵
PID:3228

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

lqmecfr.exe

Path C:\Users\Admin\AppData\Local\Temp\lqmecfr.exe
Size 14.0MB
SHA256 c1e98a1a42a51c1acda6b44e87d079595f881b435328854ecce9d2aa58ff3590
MD5 94bc7faec6d71c5f4c5486445700e122
SHA1 343a5636a70e0cb2b37924403611dc495ffbdb42
SHA512 707f79263c7acc7db03ff6e00de7baadc341193ec5a67b2f3e27db742636ebfd8c3004363dac722040bca217f618c014e17f12f71cd6fa58081133e053cc5adc
SSDEEP 12288:jUR4+0lGrUPDHQahTzrdCcrFy55555555555555555555555555555555555555f:jl+PrmrXrd1p
MD5 SHA1 SHA512 SSDEEP

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memory/3484-14-0x0000000000690000-0x00000000006A5000-memory.dmp

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memory/3484-17-0x0000000000690000-0x00000000006A5000-memory.dmp

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memory/3484-16-0x0000000000690000-0x00000000006A5000-memory.dmp

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memory/4548-13-0x0000000000400000-0x0000000000454000-memory.dmp

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memory/4548-12-0x0000000000400000-0x0000000000454000-memory.dmp

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memory/4548-11-0x0000000000400000-0x0000000000454000-memory.dmp

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memory/4548-18-0x0000000000400000-0x0000000000454000-memory.dmp

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memory/4888-9-0x00000000005B0000-0x00000000005C3000-memory.dmp

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memory/4888-8-0x0000000000400000-0x0000000000454000-memory.dmp

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memory/4888-1-0x00000000005F0000-0x00000000006F0000-memory.dmp

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memory/4888-10-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/4888-3-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/4888-2-0x00000000005B0000-0x00000000005C3000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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