tofsee | 8d929bdd859421d37d3432ef6efb36981c07ccd591a61633e58ec4b4df58e036

Analysis

max time kernel
148s
max time network
150s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
25-12-2024 15:03

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General

Target

JaffaCakes118_8d929bdd859421d37d3432ef6efb36981c07ccd591a61633e58ec4b4df58e036.exe
Size

160KB
MD5

ea477d707b195f0b44ccad65d77c5134
SHA1

a941fe2f82ac951a69d86f2214208ae1dd9dcd01
SHA256

8d929bdd859421d37d3432ef6efb36981c07ccd591a61633e58ec4b4df58e036
SHA512

65d4e367ceba707dea1d3572862c35a4371035c3f233041561d0111d3e2fb2ba9ac780a178f0b1135fee9fd2089974f6c6f27cd2439f7722d92911bb44b83a91
SSDEEP

1536:ma2VSyQsJgXWheKALv54FZ9YsnVGMk8L7w8ddqOY9jV2cYdOd/5fOJqrtUrfFhl0:xlNGUja6Md5Jle/5mQrtIFs1h/

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

quadoil.ru

lakeflex.ru

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\wyltinsr = "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
2684	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\wyltinsr\ImagePath = "C:\\Windows\\SysWOW64\\wyltinsr\\mewdctel.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2816	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2708	mewdctel.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2708 set thread context of 2816	2708	mewdctel.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2068	sc.exe
3044	sc.exe
1992	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_8d929bdd859421d37d3432ef6efb36981c07ccd591a61633e58ec4b4df58e036.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	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	mewdctel.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2504 wrote to memory of 2052	2504	JaffaCakes118_8d929bdd859421d37d3432ef6efb36981c07ccd591a61633e58ec4b4df58e036.exe	30
PID 2504 wrote to memory of 2052	2504	JaffaCakes118_8d929bdd859421d37d3432ef6efb36981c07ccd591a61633e58ec4b4df58e036.exe	30
PID 2504 wrote to memory of 2052	2504	JaffaCakes118_8d929bdd859421d37d3432ef6efb36981c07ccd591a61633e58ec4b4df58e036.exe	30
PID 2504 wrote to memory of 2052	2504	JaffaCakes118_8d929bdd859421d37d3432ef6efb36981c07ccd591a61633e58ec4b4df58e036.exe	30
PID 2504 wrote to memory of 1076	2504	JaffaCakes118_8d929bdd859421d37d3432ef6efb36981c07ccd591a61633e58ec4b4df58e036.exe	32
PID 2504 wrote to memory of 1076	2504	JaffaCakes118_8d929bdd859421d37d3432ef6efb36981c07ccd591a61633e58ec4b4df58e036.exe	32
PID 2504 wrote to memory of 1076	2504	JaffaCakes118_8d929bdd859421d37d3432ef6efb36981c07ccd591a61633e58ec4b4df58e036.exe	32
PID 2504 wrote to memory of 1076	2504	JaffaCakes118_8d929bdd859421d37d3432ef6efb36981c07ccd591a61633e58ec4b4df58e036.exe	32
PID 2504 wrote to memory of 2068	2504	JaffaCakes118_8d929bdd859421d37d3432ef6efb36981c07ccd591a61633e58ec4b4df58e036.exe	34
PID 2504 wrote to memory of 2068	2504	JaffaCakes118_8d929bdd859421d37d3432ef6efb36981c07ccd591a61633e58ec4b4df58e036.exe	34
PID 2504 wrote to memory of 2068	2504	JaffaCakes118_8d929bdd859421d37d3432ef6efb36981c07ccd591a61633e58ec4b4df58e036.exe	34
PID 2504 wrote to memory of 2068	2504	JaffaCakes118_8d929bdd859421d37d3432ef6efb36981c07ccd591a61633e58ec4b4df58e036.exe	34
PID 2504 wrote to memory of 3044	2504	JaffaCakes118_8d929bdd859421d37d3432ef6efb36981c07ccd591a61633e58ec4b4df58e036.exe	36
PID 2504 wrote to memory of 3044	2504	JaffaCakes118_8d929bdd859421d37d3432ef6efb36981c07ccd591a61633e58ec4b4df58e036.exe	36
PID 2504 wrote to memory of 3044	2504	JaffaCakes118_8d929bdd859421d37d3432ef6efb36981c07ccd591a61633e58ec4b4df58e036.exe	36
PID 2504 wrote to memory of 3044	2504	JaffaCakes118_8d929bdd859421d37d3432ef6efb36981c07ccd591a61633e58ec4b4df58e036.exe	36
PID 2504 wrote to memory of 1992	2504	JaffaCakes118_8d929bdd859421d37d3432ef6efb36981c07ccd591a61633e58ec4b4df58e036.exe	38
PID 2504 wrote to memory of 1992	2504	JaffaCakes118_8d929bdd859421d37d3432ef6efb36981c07ccd591a61633e58ec4b4df58e036.exe	38
PID 2504 wrote to memory of 1992	2504	JaffaCakes118_8d929bdd859421d37d3432ef6efb36981c07ccd591a61633e58ec4b4df58e036.exe	38
PID 2504 wrote to memory of 1992	2504	JaffaCakes118_8d929bdd859421d37d3432ef6efb36981c07ccd591a61633e58ec4b4df58e036.exe	38
PID 2708 wrote to memory of 2816	2708	mewdctel.exe	41
PID 2708 wrote to memory of 2816	2708	mewdctel.exe	41
PID 2708 wrote to memory of 2816	2708	mewdctel.exe	41
PID 2708 wrote to memory of 2816	2708	mewdctel.exe	41
PID 2708 wrote to memory of 2816	2708	mewdctel.exe	41
PID 2708 wrote to memory of 2816	2708	mewdctel.exe	41
PID 2504 wrote to memory of 2684	2504	JaffaCakes118_8d929bdd859421d37d3432ef6efb36981c07ccd591a61633e58ec4b4df58e036.exe	42
PID 2504 wrote to memory of 2684	2504	JaffaCakes118_8d929bdd859421d37d3432ef6efb36981c07ccd591a61633e58ec4b4df58e036.exe	42
PID 2504 wrote to memory of 2684	2504	JaffaCakes118_8d929bdd859421d37d3432ef6efb36981c07ccd591a61633e58ec4b4df58e036.exe	42
PID 2504 wrote to memory of 2684	2504	JaffaCakes118_8d929bdd859421d37d3432ef6efb36981c07ccd591a61633e58ec4b4df58e036.exe	42

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8d929bdd859421d37d3432ef6efb36981c07ccd591a61633e58ec4b4df58e036.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8d929bdd859421d37d3432ef6efb36981c07ccd591a61633e58ec4b4df58e036.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2504
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wyltinsr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2052
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mewdctel.exe" C:\Windows\SysWOW64\wyltinsr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1076
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create wyltinsr binPath= "C:\Windows\SysWOW64\wyltinsr\mewdctel.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8d929bdd859421d37d3432ef6efb36981c07ccd591a61633e58ec4b4df58e036.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2068
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description wyltinsr "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3044
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start wyltinsr
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1992
- 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:2684

C:\Windows\SysWOW64\wyltinsr\mewdctel.exe
C:\Windows\SysWOW64\wyltinsr\mewdctel.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8d929bdd859421d37d3432ef6efb36981c07ccd591a61633e58ec4b4df58e036.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2708
- 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:2816

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\mewdctel.exe

Filesize
11.9MB

MD5
98fb45b14ad4312aec542956fa9d7615

SHA1
eb05a1274e5c9149c26c47c0f87e75a7831cd09d

SHA256
f51c464a76ba549f4ccbba8ed9b609da9ba9de93db28a475250f926521d89a9f

SHA512
6d7e22dd38dbd3ad18bebef47c93480e976af072241ece4f73151eb0d71cfa08a1533107a669a1d2c655513ad3da8345968c6dc324a17cc8cb39e1c85f0770b3

Download Submit
memory/2504-14-0x0000000000230000-0x0000000000243000-memory.dmp

Filesize
76KB

Download
memory/2504-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2504-0-0x0000000000220000-0x000000000022D000-memory.dmp

Filesize
52KB

Download
memory/2504-15-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2504-1-0x0000000000230000-0x0000000000243000-memory.dmp

Filesize
76KB

Download
memory/2504-13-0x0000000000220000-0x000000000022D000-memory.dmp

Filesize
52KB

Download
memory/2504-12-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2708-11-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2816-8-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2816-9-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2816-6-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2816-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2816-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads