tofsee | e71b8af014065f8c886c55d96b0227f78a68a5aa8c48419d5e448c880ab68296

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
23-12-2024 20:06

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General

Target

JaffaCakes118_e71b8af014065f8c886c55d96b0227f78a68a5aa8c48419d5e448c880ab68296.exe
Size

167KB
MD5

0cb3adec3ce1faebbab29888915f9636
SHA1

b623842bf207b9b44bb61340ee9cae53f3b4ad3c
SHA256

e71b8af014065f8c886c55d96b0227f78a68a5aa8c48419d5e448c880ab68296
SHA512

11ae399105d1a097dc502e138dfbfac854e61c2ad5db28777dee1dea9697aab0a26a2f5c80d4c081d9fc35e41716e1d7d36f510e465c885f9317f15e60aa9321
SSDEEP

3072:VcaRIAtq6Fvn49EZ8kwu25gnvju1WIasBW/S9H6dY3:21Atq6a9sv3/Ead

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\ylbiwzuo = "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
1424	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\ylbiwzuo\ImagePath = "C:\\Windows\\SysWOW64\\ylbiwzuo\\gwwwlcia.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
568	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2636	gwwwlcia.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2636 set thread context of 568	2636	gwwwlcia.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2220	sc.exe
2752	sc.exe
2580	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_e71b8af014065f8c886c55d96b0227f78a68a5aa8c48419d5e448c880ab68296.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gwwwlcia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2844 wrote to memory of 2592	2844	JaffaCakes118_e71b8af014065f8c886c55d96b0227f78a68a5aa8c48419d5e448c880ab68296.exe	31
PID 2844 wrote to memory of 2592	2844	JaffaCakes118_e71b8af014065f8c886c55d96b0227f78a68a5aa8c48419d5e448c880ab68296.exe	31
PID 2844 wrote to memory of 2592	2844	JaffaCakes118_e71b8af014065f8c886c55d96b0227f78a68a5aa8c48419d5e448c880ab68296.exe	31
PID 2844 wrote to memory of 2592	2844	JaffaCakes118_e71b8af014065f8c886c55d96b0227f78a68a5aa8c48419d5e448c880ab68296.exe	31
PID 2844 wrote to memory of 2872	2844	JaffaCakes118_e71b8af014065f8c886c55d96b0227f78a68a5aa8c48419d5e448c880ab68296.exe	33
PID 2844 wrote to memory of 2872	2844	JaffaCakes118_e71b8af014065f8c886c55d96b0227f78a68a5aa8c48419d5e448c880ab68296.exe	33
PID 2844 wrote to memory of 2872	2844	JaffaCakes118_e71b8af014065f8c886c55d96b0227f78a68a5aa8c48419d5e448c880ab68296.exe	33
PID 2844 wrote to memory of 2872	2844	JaffaCakes118_e71b8af014065f8c886c55d96b0227f78a68a5aa8c48419d5e448c880ab68296.exe	33
PID 2844 wrote to memory of 2220	2844	JaffaCakes118_e71b8af014065f8c886c55d96b0227f78a68a5aa8c48419d5e448c880ab68296.exe	35
PID 2844 wrote to memory of 2220	2844	JaffaCakes118_e71b8af014065f8c886c55d96b0227f78a68a5aa8c48419d5e448c880ab68296.exe	35
PID 2844 wrote to memory of 2220	2844	JaffaCakes118_e71b8af014065f8c886c55d96b0227f78a68a5aa8c48419d5e448c880ab68296.exe	35
PID 2844 wrote to memory of 2220	2844	JaffaCakes118_e71b8af014065f8c886c55d96b0227f78a68a5aa8c48419d5e448c880ab68296.exe	35
PID 2844 wrote to memory of 2752	2844	JaffaCakes118_e71b8af014065f8c886c55d96b0227f78a68a5aa8c48419d5e448c880ab68296.exe	37
PID 2844 wrote to memory of 2752	2844	JaffaCakes118_e71b8af014065f8c886c55d96b0227f78a68a5aa8c48419d5e448c880ab68296.exe	37
PID 2844 wrote to memory of 2752	2844	JaffaCakes118_e71b8af014065f8c886c55d96b0227f78a68a5aa8c48419d5e448c880ab68296.exe	37
PID 2844 wrote to memory of 2752	2844	JaffaCakes118_e71b8af014065f8c886c55d96b0227f78a68a5aa8c48419d5e448c880ab68296.exe	37
PID 2844 wrote to memory of 2580	2844	JaffaCakes118_e71b8af014065f8c886c55d96b0227f78a68a5aa8c48419d5e448c880ab68296.exe	39
PID 2844 wrote to memory of 2580	2844	JaffaCakes118_e71b8af014065f8c886c55d96b0227f78a68a5aa8c48419d5e448c880ab68296.exe	39
PID 2844 wrote to memory of 2580	2844	JaffaCakes118_e71b8af014065f8c886c55d96b0227f78a68a5aa8c48419d5e448c880ab68296.exe	39
PID 2844 wrote to memory of 2580	2844	JaffaCakes118_e71b8af014065f8c886c55d96b0227f78a68a5aa8c48419d5e448c880ab68296.exe	39
PID 2844 wrote to memory of 1424	2844	JaffaCakes118_e71b8af014065f8c886c55d96b0227f78a68a5aa8c48419d5e448c880ab68296.exe	42
PID 2844 wrote to memory of 1424	2844	JaffaCakes118_e71b8af014065f8c886c55d96b0227f78a68a5aa8c48419d5e448c880ab68296.exe	42
PID 2844 wrote to memory of 1424	2844	JaffaCakes118_e71b8af014065f8c886c55d96b0227f78a68a5aa8c48419d5e448c880ab68296.exe	42
PID 2844 wrote to memory of 1424	2844	JaffaCakes118_e71b8af014065f8c886c55d96b0227f78a68a5aa8c48419d5e448c880ab68296.exe	42
PID 2636 wrote to memory of 568	2636	gwwwlcia.exe	44
PID 2636 wrote to memory of 568	2636	gwwwlcia.exe	44
PID 2636 wrote to memory of 568	2636	gwwwlcia.exe	44
PID 2636 wrote to memory of 568	2636	gwwwlcia.exe	44
PID 2636 wrote to memory of 568	2636	gwwwlcia.exe	44
PID 2636 wrote to memory of 568	2636	gwwwlcia.exe	44

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e71b8af014065f8c886c55d96b0227f78a68a5aa8c48419d5e448c880ab68296.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e71b8af014065f8c886c55d96b0227f78a68a5aa8c48419d5e448c880ab68296.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2844
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ylbiwzuo\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2592
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gwwwlcia.exe" C:\Windows\SysWOW64\ylbiwzuo\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2872
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ylbiwzuo binPath= "C:\Windows\SysWOW64\ylbiwzuo\gwwwlcia.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e71b8af014065f8c886c55d96b0227f78a68a5aa8c48419d5e448c880ab68296.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2220
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ylbiwzuo "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2752
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ylbiwzuo
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2580
- 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:1424

C:\Windows\SysWOW64\ylbiwzuo\gwwwlcia.exe
C:\Windows\SysWOW64\ylbiwzuo\gwwwlcia.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e71b8af014065f8c886c55d96b0227f78a68a5aa8c48419d5e448c880ab68296.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2636
- 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:568

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\gwwwlcia.exe

Filesize
13.4MB

MD5
44dc6a11b2792a4cdba0e43816fb1943

SHA1
e40231bbffba7796707a1adc1f12183f370793ea

SHA256
fcf97396216eb2a4c96bb7e4e50b0cc2980dbd44dda9881f5b9a80181a39ebf9

SHA512
3d64ad3e29f07e26363ee4cc46dd30b867073d1d336bf619338f72390158f6e7a4fc8cdc5acd33a9b314fdf2936cfb7d3d7918f7ec79fbb13347a6b1114cb37d

Download Submit
memory/568-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/568-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/568-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/568-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/568-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2636-17-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2844-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2844-2-0x00000000001B0000-0x00000000001C3000-memory.dmp

Filesize
76KB

Download
memory/2844-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2844-9-0x00000000001B0000-0x00000000001C3000-memory.dmp

Filesize
76KB

Download
memory/2844-8-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2844-1-0x0000000000290000-0x0000000000390000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads