tofsee | 8a58cd77a16cf1b24e676f63f527d54a0443dcf844233909b3ebec736cd54cd4

Analysis

max time kernel
143s
max time network
145s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
29-12-2024 13:46

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General

Target

JaffaCakes118_8a58cd77a16cf1b24e676f63f527d54a0443dcf844233909b3ebec736cd54cd4.exe
Size

283KB
MD5

9f4582b83cdd1ff7bd7a9055bf48bf32
SHA1

275b08eee23369a36c2011d67c99f1ec0dd0af24
SHA256

8a58cd77a16cf1b24e676f63f527d54a0443dcf844233909b3ebec736cd54cd4
SHA512

0f1f821921c3b9df09de92821a6630d5f9c886c706b793f3c0f2c49189235059a7a3cfe7507896cc2f4b37d5c4892b4787f959c9147c9e96f68f35d7a79fb470
SSDEEP

3072:aMfSQWigMDolLIUeaKEb1D1cKX7xc09ZOycvIAZgERt6NPtHvs+bxqkqbi0o83j1:aeSojoveyb1ZvLxB6g86P0+9io

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\ybcswywm = "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
2856	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\ybcswywm\ImagePath = "C:\\Windows\\SysWOW64\\ybcswywm\\kwiqqbqy.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2752	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2876	kwiqqbqy.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2876 set thread context of 2752	2876	kwiqqbqy.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2912	sc.exe
2864	sc.exe
2944	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	svchost.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	kwiqqbqy.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_8a58cd77a16cf1b24e676f63f527d54a0443dcf844233909b3ebec736cd54cd4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2104 wrote to memory of 1640	2104	JaffaCakes118_8a58cd77a16cf1b24e676f63f527d54a0443dcf844233909b3ebec736cd54cd4.exe	30
PID 2104 wrote to memory of 1640	2104	JaffaCakes118_8a58cd77a16cf1b24e676f63f527d54a0443dcf844233909b3ebec736cd54cd4.exe	30
PID 2104 wrote to memory of 1640	2104	JaffaCakes118_8a58cd77a16cf1b24e676f63f527d54a0443dcf844233909b3ebec736cd54cd4.exe	30
PID 2104 wrote to memory of 1640	2104	JaffaCakes118_8a58cd77a16cf1b24e676f63f527d54a0443dcf844233909b3ebec736cd54cd4.exe	30
PID 2104 wrote to memory of 2396	2104	JaffaCakes118_8a58cd77a16cf1b24e676f63f527d54a0443dcf844233909b3ebec736cd54cd4.exe	32
PID 2104 wrote to memory of 2396	2104	JaffaCakes118_8a58cd77a16cf1b24e676f63f527d54a0443dcf844233909b3ebec736cd54cd4.exe	32
PID 2104 wrote to memory of 2396	2104	JaffaCakes118_8a58cd77a16cf1b24e676f63f527d54a0443dcf844233909b3ebec736cd54cd4.exe	32
PID 2104 wrote to memory of 2396	2104	JaffaCakes118_8a58cd77a16cf1b24e676f63f527d54a0443dcf844233909b3ebec736cd54cd4.exe	32
PID 2104 wrote to memory of 2912	2104	JaffaCakes118_8a58cd77a16cf1b24e676f63f527d54a0443dcf844233909b3ebec736cd54cd4.exe	34
PID 2104 wrote to memory of 2912	2104	JaffaCakes118_8a58cd77a16cf1b24e676f63f527d54a0443dcf844233909b3ebec736cd54cd4.exe	34
PID 2104 wrote to memory of 2912	2104	JaffaCakes118_8a58cd77a16cf1b24e676f63f527d54a0443dcf844233909b3ebec736cd54cd4.exe	34
PID 2104 wrote to memory of 2912	2104	JaffaCakes118_8a58cd77a16cf1b24e676f63f527d54a0443dcf844233909b3ebec736cd54cd4.exe	34
PID 2104 wrote to memory of 2864	2104	JaffaCakes118_8a58cd77a16cf1b24e676f63f527d54a0443dcf844233909b3ebec736cd54cd4.exe	36
PID 2104 wrote to memory of 2864	2104	JaffaCakes118_8a58cd77a16cf1b24e676f63f527d54a0443dcf844233909b3ebec736cd54cd4.exe	36
PID 2104 wrote to memory of 2864	2104	JaffaCakes118_8a58cd77a16cf1b24e676f63f527d54a0443dcf844233909b3ebec736cd54cd4.exe	36
PID 2104 wrote to memory of 2864	2104	JaffaCakes118_8a58cd77a16cf1b24e676f63f527d54a0443dcf844233909b3ebec736cd54cd4.exe	36
PID 2104 wrote to memory of 2944	2104	JaffaCakes118_8a58cd77a16cf1b24e676f63f527d54a0443dcf844233909b3ebec736cd54cd4.exe	38
PID 2104 wrote to memory of 2944	2104	JaffaCakes118_8a58cd77a16cf1b24e676f63f527d54a0443dcf844233909b3ebec736cd54cd4.exe	38
PID 2104 wrote to memory of 2944	2104	JaffaCakes118_8a58cd77a16cf1b24e676f63f527d54a0443dcf844233909b3ebec736cd54cd4.exe	38
PID 2104 wrote to memory of 2944	2104	JaffaCakes118_8a58cd77a16cf1b24e676f63f527d54a0443dcf844233909b3ebec736cd54cd4.exe	38
PID 2104 wrote to memory of 2856	2104	JaffaCakes118_8a58cd77a16cf1b24e676f63f527d54a0443dcf844233909b3ebec736cd54cd4.exe	41
PID 2104 wrote to memory of 2856	2104	JaffaCakes118_8a58cd77a16cf1b24e676f63f527d54a0443dcf844233909b3ebec736cd54cd4.exe	41
PID 2104 wrote to memory of 2856	2104	JaffaCakes118_8a58cd77a16cf1b24e676f63f527d54a0443dcf844233909b3ebec736cd54cd4.exe	41
PID 2104 wrote to memory of 2856	2104	JaffaCakes118_8a58cd77a16cf1b24e676f63f527d54a0443dcf844233909b3ebec736cd54cd4.exe	41
PID 2876 wrote to memory of 2752	2876	kwiqqbqy.exe	43
PID 2876 wrote to memory of 2752	2876	kwiqqbqy.exe	43
PID 2876 wrote to memory of 2752	2876	kwiqqbqy.exe	43
PID 2876 wrote to memory of 2752	2876	kwiqqbqy.exe	43
PID 2876 wrote to memory of 2752	2876	kwiqqbqy.exe	43
PID 2876 wrote to memory of 2752	2876	kwiqqbqy.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8a58cd77a16cf1b24e676f63f527d54a0443dcf844233909b3ebec736cd54cd4.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8a58cd77a16cf1b24e676f63f527d54a0443dcf844233909b3ebec736cd54cd4.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2104
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ybcswywm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1640
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kwiqqbqy.exe" C:\Windows\SysWOW64\ybcswywm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2396
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ybcswywm binPath= "C:\Windows\SysWOW64\ybcswywm\kwiqqbqy.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8a58cd77a16cf1b24e676f63f527d54a0443dcf844233909b3ebec736cd54cd4.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2912
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ybcswywm "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2864
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ybcswywm
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2944
- 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:2856

C:\Windows\SysWOW64\ybcswywm\kwiqqbqy.exe
C:\Windows\SysWOW64\ybcswywm\kwiqqbqy.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8a58cd77a16cf1b24e676f63f527d54a0443dcf844233909b3ebec736cd54cd4.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2876
- 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:2752

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\kwiqqbqy.exe

Filesize
12.5MB

MD5
1a9f6e10215d2092dbcfcd61f077a8f2

SHA1
3ced9feb90c4754bd0619ecaed16d18a1cabf103

SHA256
d0cd8caa4955b787780bdb60ff6e96ec7accfd75f13b4e67144d3e97e654d09f

SHA512
6095087b24c502171c704828ec805a796611edf80418ae5291852edec0313533b8b17a81a6fb224176f8b60809ab2f0dd851712ac2532c429af691766e0297c8

Download Submit
memory/2104-8-0x0000000000400000-0x0000000002B8F000-memory.dmp

Filesize
39.6MB

Download
memory/2104-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2104-1-0x0000000002C40000-0x0000000002D40000-memory.dmp

Filesize
1024KB

Download
memory/2104-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2104-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2104-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2752-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2752-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2752-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2752-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2752-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2876-15-0x0000000000400000-0x0000000002B8F000-memory.dmp

Filesize
39.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads