tofsee | 2b7385aa5abdda5bbf3da3fc48215fc837b3cd15270fc618ceac03bfb5c0ddca

Analysis

max time kernel
147s
max time network
145s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
31-12-2024 06:54

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General

Target

JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe
Size

14.5MB
MD5

098f305ad80931639cbd55398fae8c4a
SHA1

2389c6a040ba89e89ebd0502674c8626b232c3f9
SHA256

2b7385aa5abdda5bbf3da3fc48215fc837b3cd15270fc618ceac03bfb5c0ddca
SHA512

611afe35a3fdf49526b6ec04a095f1fcea608b65dafd96f6e6b1d55eee5b7e3801a905620862764f91b2deb256c0a29c68da7d72ab0438421d5d5d70d8b7c3b8
SSDEEP

6144:DLmhaXrxJHCx7HdqAT7mvs/bNAk3B79NmVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVj:DLmhaXrxJHuHdPT1n9N

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\bylzvqo = "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
2220	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\bylzvqo\ImagePath = "C:\\Windows\\SysWOW64\\bylzvqo\\zlxffqfn.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
596	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2660	zlxffqfn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2660 set thread context of 596	2660	zlxffqfn.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2240	sc.exe
2728	sc.exe
2828	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	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.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	svchost.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	zlxffqfn.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2616 wrote to memory of 2084	2616	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	31
PID 2616 wrote to memory of 2084	2616	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	31
PID 2616 wrote to memory of 2084	2616	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	31
PID 2616 wrote to memory of 2084	2616	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	31
PID 2616 wrote to memory of 1164	2616	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	33
PID 2616 wrote to memory of 1164	2616	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	33
PID 2616 wrote to memory of 1164	2616	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	33
PID 2616 wrote to memory of 1164	2616	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	33
PID 2616 wrote to memory of 2240	2616	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	35
PID 2616 wrote to memory of 2240	2616	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	35
PID 2616 wrote to memory of 2240	2616	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	35
PID 2616 wrote to memory of 2240	2616	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	35
PID 2616 wrote to memory of 2728	2616	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	37
PID 2616 wrote to memory of 2728	2616	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	37
PID 2616 wrote to memory of 2728	2616	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	37
PID 2616 wrote to memory of 2728	2616	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	37
PID 2616 wrote to memory of 2828	2616	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	39
PID 2616 wrote to memory of 2828	2616	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	39
PID 2616 wrote to memory of 2828	2616	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	39
PID 2616 wrote to memory of 2828	2616	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	39
PID 2616 wrote to memory of 2220	2616	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	42
PID 2616 wrote to memory of 2220	2616	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	42
PID 2616 wrote to memory of 2220	2616	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	42
PID 2616 wrote to memory of 2220	2616	JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe	42
PID 2660 wrote to memory of 596	2660	zlxffqfn.exe	44
PID 2660 wrote to memory of 596	2660	zlxffqfn.exe	44
PID 2660 wrote to memory of 596	2660	zlxffqfn.exe	44
PID 2660 wrote to memory of 596	2660	zlxffqfn.exe	44
PID 2660 wrote to memory of 596	2660	zlxffqfn.exe	44
PID 2660 wrote to memory of 596	2660	zlxffqfn.exe	44

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2616
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bylzvqo\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2084
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zlxffqfn.exe" C:\Windows\SysWOW64\bylzvqo\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1164
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bylzvqo binPath= "C:\Windows\SysWOW64\bylzvqo\zlxffqfn.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2240
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bylzvqo "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2728
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bylzvqo
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2828
- 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:2220

C:\Windows\SysWOW64\bylzvqo\zlxffqfn.exe
C:\Windows\SysWOW64\bylzvqo\zlxffqfn.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_098f305ad80931639cbd55398fae8c4a.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2660
- 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:596

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\zlxffqfn.exe

Filesize
11.1MB

MD5
cb7ec915fc6c760831dfe5d86b19ffce

SHA1
7a2add058d5d11a82cabcb5b7b72907313f93fd8

SHA256
6d08cdc1ddceb06ed4df2e79cc364f6f9a1e704f03b82f1a7326aa69353508b3

SHA512
1940cb61013cd75b4685f57fb4eaf5965fd9cb17b67e64abd5dc84cc6626d6c58a219e6b2755928d8719169364e52c5902492ef4f9cde1bff88d3496a6d8e901

Download Submit
memory/596-17-0x00000000000E0000-0x00000000000F5000-memory.dmp

Filesize
84KB

Download
memory/596-12-0x00000000000E0000-0x00000000000F5000-memory.dmp

Filesize
84KB

Download
memory/596-15-0x00000000000E0000-0x00000000000F5000-memory.dmp

Filesize
84KB

Download
memory/596-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/596-19-0x00000000000E0000-0x00000000000F5000-memory.dmp

Filesize
84KB

Download
memory/2616-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2616-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2616-11-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2616-10-0x00000000009E0000-0x0000000000AE0000-memory.dmp

Filesize
1024KB

Download
memory/2616-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2616-8-0x0000000000400000-0x0000000000878000-memory.dmp

Filesize
4.5MB

Download
memory/2616-1-0x00000000009E0000-0x0000000000AE0000-memory.dmp

Filesize
1024KB

Download
memory/2660-18-0x0000000000400000-0x0000000000878000-memory.dmp

Filesize
4.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads