tofsee | ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0

Analysis

max time kernel
150s
max time network
152s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
25-12-2024 05:28

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General

Target

JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe
Size

153KB
MD5

b4b463d7f677821bef88956f82e4acfe
SHA1

e8b8e46d97fddabb2a1e3641b934ea82f7f84617
SHA256

ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0
SHA512

ce0a47ddd139ddc927776b9925c194aa8ed22d91409d068674e2ebdb16956155e1d3169e46db97841047084ca552af89f6452244064f0e0883c86a73b58c8d73
SSDEEP

3072:C7wDVf/TBmhfUU+68DF+uuUzs6HB571DL0O:C7wDVYhcUkFBz18O

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\mjltnnsf = "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
2884	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\mjltnnsf\ImagePath = "C:\\Windows\\SysWOW64\\mjltnnsf\\pwzxyyoc.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
3008	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2820	pwzxyyoc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2820 set thread context of 3008	2820	pwzxyyoc.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
536	sc.exe
1920	sc.exe
2532	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 queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	pwzxyyoc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.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

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2240 wrote to memory of 2616	2240	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	30
PID 2240 wrote to memory of 2616	2240	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	30
PID 2240 wrote to memory of 2616	2240	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	30
PID 2240 wrote to memory of 2616	2240	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	30
PID 2240 wrote to memory of 2304	2240	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	32
PID 2240 wrote to memory of 2304	2240	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	32
PID 2240 wrote to memory of 2304	2240	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	32
PID 2240 wrote to memory of 2304	2240	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	32
PID 2240 wrote to memory of 536	2240	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	34
PID 2240 wrote to memory of 536	2240	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	34
PID 2240 wrote to memory of 536	2240	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	34
PID 2240 wrote to memory of 536	2240	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	34
PID 2240 wrote to memory of 1920	2240	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	36
PID 2240 wrote to memory of 1920	2240	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	36
PID 2240 wrote to memory of 1920	2240	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	36
PID 2240 wrote to memory of 1920	2240	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	36
PID 2240 wrote to memory of 2532	2240	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	38
PID 2240 wrote to memory of 2532	2240	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	38
PID 2240 wrote to memory of 2532	2240	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	38
PID 2240 wrote to memory of 2532	2240	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	38
PID 2240 wrote to memory of 2884	2240	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	41
PID 2240 wrote to memory of 2884	2240	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	41
PID 2240 wrote to memory of 2884	2240	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	41
PID 2240 wrote to memory of 2884	2240	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	41
PID 2820 wrote to memory of 3008	2820	pwzxyyoc.exe	44
PID 2820 wrote to memory of 3008	2820	pwzxyyoc.exe	44
PID 2820 wrote to memory of 3008	2820	pwzxyyoc.exe	44
PID 2820 wrote to memory of 3008	2820	pwzxyyoc.exe	44
PID 2820 wrote to memory of 3008	2820	pwzxyyoc.exe	44
PID 2820 wrote to memory of 3008	2820	pwzxyyoc.exe	44

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2240
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mjltnnsf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2616
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pwzxyyoc.exe" C:\Windows\SysWOW64\mjltnnsf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2304
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mjltnnsf binPath= "C:\Windows\SysWOW64\mjltnnsf\pwzxyyoc.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:536
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mjltnnsf "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1920
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mjltnnsf
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2532
- 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:2884

C:\Windows\SysWOW64\mjltnnsf\pwzxyyoc.exe
C:\Windows\SysWOW64\mjltnnsf\pwzxyyoc.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2820
- 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:3008

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\pwzxyyoc.exe

Filesize
11.6MB

MD5
31767236a4e9aeee48404e2c5b56822b

SHA1
b419681d9e9d3f7296b03b8cb40feb429a446d8a

SHA256
17371cdbc902a7759bdd5cbfafd676b4f6e8001d3891006bd242915d8a81e4c0

SHA512
d8212e242aaa8e7ffa114f8b0f9bfcf04753cb00eb4f81032812262b849d8fee6c42d4e51ae69c41974fccb8b5f9ad7d27175d3318e960ce01827fc6f66b6599

Download Submit
memory/2240-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2240-1-0x0000000000250000-0x0000000000350000-memory.dmp

Filesize
1024KB

Download
memory/2240-3-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/2240-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2240-9-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/2820-17-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/3008-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3008-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3008-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3008-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3008-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads