tofsee | c4464b306d676d84d4597682148ecfbcfb64eeb8516dcc24b447fb1ba42df847

Analysis

max time kernel
145s
max time network
144s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
27-12-2024 01:04

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General

Target

JaffaCakes118_c4464b306d676d84d4597682148ecfbcfb64eeb8516dcc24b447fb1ba42df847.exe
Size

244KB
MD5

ca1b0fab6b22d571f44f4e0b320b0c36
SHA1

36db18567393b5467f562ab9266f7bcd6c08cc81
SHA256

c4464b306d676d84d4597682148ecfbcfb64eeb8516dcc24b447fb1ba42df847
SHA512

fb0f7c95a00ac0e6894c8ffcbe0de7b4c1430065fb63f7b0241a54521f28387024984070de81778869714c879520ea3df4d0e6a1d388f3815b31ba65be7dee4b
SSDEEP

6144:LTZQCW0TZlWoHtNiVqFYcmW5jpkGk9Rc8:fZzTZlWqtEjcmc1kGr

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\gddrefow = "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
2732	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\gddrefow\ImagePath = "C:\\Windows\\SysWOW64\\gddrefow\\krusttjx.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2640	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2992	krusttjx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2992 set thread context of 2640	2992	krusttjx.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2468	sc.exe
1956	sc.exe
2792	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_c4464b306d676d84d4597682148ecfbcfb64eeb8516dcc24b447fb1ba42df847.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	krusttjx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 3044 wrote to memory of 2388	3044	JaffaCakes118_c4464b306d676d84d4597682148ecfbcfb64eeb8516dcc24b447fb1ba42df847.exe	31
PID 3044 wrote to memory of 2388	3044	JaffaCakes118_c4464b306d676d84d4597682148ecfbcfb64eeb8516dcc24b447fb1ba42df847.exe	31
PID 3044 wrote to memory of 2388	3044	JaffaCakes118_c4464b306d676d84d4597682148ecfbcfb64eeb8516dcc24b447fb1ba42df847.exe	31
PID 3044 wrote to memory of 2388	3044	JaffaCakes118_c4464b306d676d84d4597682148ecfbcfb64eeb8516dcc24b447fb1ba42df847.exe	31
PID 3044 wrote to memory of 2968	3044	JaffaCakes118_c4464b306d676d84d4597682148ecfbcfb64eeb8516dcc24b447fb1ba42df847.exe	33
PID 3044 wrote to memory of 2968	3044	JaffaCakes118_c4464b306d676d84d4597682148ecfbcfb64eeb8516dcc24b447fb1ba42df847.exe	33
PID 3044 wrote to memory of 2968	3044	JaffaCakes118_c4464b306d676d84d4597682148ecfbcfb64eeb8516dcc24b447fb1ba42df847.exe	33
PID 3044 wrote to memory of 2968	3044	JaffaCakes118_c4464b306d676d84d4597682148ecfbcfb64eeb8516dcc24b447fb1ba42df847.exe	33
PID 3044 wrote to memory of 2468	3044	JaffaCakes118_c4464b306d676d84d4597682148ecfbcfb64eeb8516dcc24b447fb1ba42df847.exe	35
PID 3044 wrote to memory of 2468	3044	JaffaCakes118_c4464b306d676d84d4597682148ecfbcfb64eeb8516dcc24b447fb1ba42df847.exe	35
PID 3044 wrote to memory of 2468	3044	JaffaCakes118_c4464b306d676d84d4597682148ecfbcfb64eeb8516dcc24b447fb1ba42df847.exe	35
PID 3044 wrote to memory of 2468	3044	JaffaCakes118_c4464b306d676d84d4597682148ecfbcfb64eeb8516dcc24b447fb1ba42df847.exe	35
PID 3044 wrote to memory of 1956	3044	JaffaCakes118_c4464b306d676d84d4597682148ecfbcfb64eeb8516dcc24b447fb1ba42df847.exe	37
PID 3044 wrote to memory of 1956	3044	JaffaCakes118_c4464b306d676d84d4597682148ecfbcfb64eeb8516dcc24b447fb1ba42df847.exe	37
PID 3044 wrote to memory of 1956	3044	JaffaCakes118_c4464b306d676d84d4597682148ecfbcfb64eeb8516dcc24b447fb1ba42df847.exe	37
PID 3044 wrote to memory of 1956	3044	JaffaCakes118_c4464b306d676d84d4597682148ecfbcfb64eeb8516dcc24b447fb1ba42df847.exe	37
PID 3044 wrote to memory of 2792	3044	JaffaCakes118_c4464b306d676d84d4597682148ecfbcfb64eeb8516dcc24b447fb1ba42df847.exe	39
PID 3044 wrote to memory of 2792	3044	JaffaCakes118_c4464b306d676d84d4597682148ecfbcfb64eeb8516dcc24b447fb1ba42df847.exe	39
PID 3044 wrote to memory of 2792	3044	JaffaCakes118_c4464b306d676d84d4597682148ecfbcfb64eeb8516dcc24b447fb1ba42df847.exe	39
PID 3044 wrote to memory of 2792	3044	JaffaCakes118_c4464b306d676d84d4597682148ecfbcfb64eeb8516dcc24b447fb1ba42df847.exe	39
PID 3044 wrote to memory of 2732	3044	JaffaCakes118_c4464b306d676d84d4597682148ecfbcfb64eeb8516dcc24b447fb1ba42df847.exe	42
PID 3044 wrote to memory of 2732	3044	JaffaCakes118_c4464b306d676d84d4597682148ecfbcfb64eeb8516dcc24b447fb1ba42df847.exe	42
PID 3044 wrote to memory of 2732	3044	JaffaCakes118_c4464b306d676d84d4597682148ecfbcfb64eeb8516dcc24b447fb1ba42df847.exe	42
PID 3044 wrote to memory of 2732	3044	JaffaCakes118_c4464b306d676d84d4597682148ecfbcfb64eeb8516dcc24b447fb1ba42df847.exe	42
PID 2992 wrote to memory of 2640	2992	krusttjx.exe	44
PID 2992 wrote to memory of 2640	2992	krusttjx.exe	44
PID 2992 wrote to memory of 2640	2992	krusttjx.exe	44
PID 2992 wrote to memory of 2640	2992	krusttjx.exe	44
PID 2992 wrote to memory of 2640	2992	krusttjx.exe	44
PID 2992 wrote to memory of 2640	2992	krusttjx.exe	44

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c4464b306d676d84d4597682148ecfbcfb64eeb8516dcc24b447fb1ba42df847.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c4464b306d676d84d4597682148ecfbcfb64eeb8516dcc24b447fb1ba42df847.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3044
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gddrefow\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2388
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\krusttjx.exe" C:\Windows\SysWOW64\gddrefow\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2968
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create gddrefow binPath= "C:\Windows\SysWOW64\gddrefow\krusttjx.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c4464b306d676d84d4597682148ecfbcfb64eeb8516dcc24b447fb1ba42df847.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2468
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description gddrefow "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1956
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start gddrefow
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2792
- 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:2732

C:\Windows\SysWOW64\gddrefow\krusttjx.exe
C:\Windows\SysWOW64\gddrefow\krusttjx.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c4464b306d676d84d4597682148ecfbcfb64eeb8516dcc24b447fb1ba42df847.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2992
- 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:2640

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\krusttjx.exe

Filesize
10.8MB

MD5
f60c5b2954774313b7e566ef0f833cf7

SHA1
d679fdc41f265f4c8206a03a52c16137062d42c8

SHA256
0a0485cf1eadcd59884745a4b30e2c0fc22905d7098d6ff2cb36f8d340f6410b

SHA512
bf88f1b67d4c0f0d63e4baec2b89ed64ebacfe54820dd3523b946dcc5f342c6e7929075b743f832152388176d9adabce4c5dcd451a9026a68e087d4786b18ec6

Download Submit
memory/2640-16-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2640-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2640-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2640-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2640-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2992-17-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3044-1-0x00000000002D0000-0x00000000003D0000-memory.dmp

Filesize
1024KB

Download
memory/3044-3-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3044-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3044-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3044-9-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads