tofsee | 274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3

Analysis

max time kernel
143s
max time network
144s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
24-12-2024 17:17

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General

Target

JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe
Size

317KB
MD5

0e2a6c2b461933c7a1e7a048ee1f5b25
SHA1

a8fede94148338f469399d62fe5f72aad45f8699
SHA256

274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3
SHA512

95f3bdd286a185e3cd2c3e7b5bec5f53cfbf262254618527f8a183ac1055a581b1dc612b0464da76de3241abd8ca68d6f0779a59a9c06a6db37fb1a64bbc76ad
SSDEEP

6144:jOTe/jixL46Z2Lbf/j9A1wn5qJL6d54POOhxxdeTr/ekI:jyc6Z2LjjCL6dIzxd6L

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\grscywpx = "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
2436	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\grscywpx\ImagePath = "C:\\Windows\\SysWOW64\\grscywpx\\jzugamqi.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2640	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2720	jzugamqi.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2720 set thread context of 2640	2720	jzugamqi.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2488	sc.exe
2796	sc.exe
1820	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jzugamqi.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.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

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1840 wrote to memory of 2016	1840	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	31
PID 1840 wrote to memory of 2016	1840	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	31
PID 1840 wrote to memory of 2016	1840	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	31
PID 1840 wrote to memory of 2016	1840	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	31
PID 1840 wrote to memory of 2880	1840	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	33
PID 1840 wrote to memory of 2880	1840	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	33
PID 1840 wrote to memory of 2880	1840	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	33
PID 1840 wrote to memory of 2880	1840	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	33
PID 1840 wrote to memory of 2488	1840	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	35
PID 1840 wrote to memory of 2488	1840	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	35
PID 1840 wrote to memory of 2488	1840	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	35
PID 1840 wrote to memory of 2488	1840	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	35
PID 1840 wrote to memory of 2796	1840	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	37
PID 1840 wrote to memory of 2796	1840	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	37
PID 1840 wrote to memory of 2796	1840	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	37
PID 1840 wrote to memory of 2796	1840	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	37
PID 1840 wrote to memory of 1820	1840	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	39
PID 1840 wrote to memory of 1820	1840	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	39
PID 1840 wrote to memory of 1820	1840	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	39
PID 1840 wrote to memory of 1820	1840	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	39
PID 1840 wrote to memory of 2436	1840	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	42
PID 1840 wrote to memory of 2436	1840	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	42
PID 1840 wrote to memory of 2436	1840	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	42
PID 1840 wrote to memory of 2436	1840	JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe	42
PID 2720 wrote to memory of 2640	2720	jzugamqi.exe	44
PID 2720 wrote to memory of 2640	2720	jzugamqi.exe	44
PID 2720 wrote to memory of 2640	2720	jzugamqi.exe	44
PID 2720 wrote to memory of 2640	2720	jzugamqi.exe	44
PID 2720 wrote to memory of 2640	2720	jzugamqi.exe	44
PID 2720 wrote to memory of 2640	2720	jzugamqi.exe	44

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1840
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\grscywpx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2016
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jzugamqi.exe" C:\Windows\SysWOW64\grscywpx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2880
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create grscywpx binPath= "C:\Windows\SysWOW64\grscywpx\jzugamqi.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2488
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description grscywpx "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2796
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start grscywpx
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1820
- 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:2436

C:\Windows\SysWOW64\grscywpx\jzugamqi.exe
C:\Windows\SysWOW64\grscywpx\jzugamqi.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_274b3c536ebcb446ca777abe139dba4b712d9b334e15608a5c3331deec2935e3.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2720
- 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:2640

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\jzugamqi.exe

Filesize
14.8MB

MD5
92383ebf70623cd7b58cc37cd76092f3

SHA1
afdf2583d8a6d604b2aec2c3f8300ef2f2516973

SHA256
874ea719ca72a79e821e0b1eddbf170a4062021a0d02967261190355de3e38e2

SHA512
3afe884976fb2abeec6dbf8eb8056f83d346565127a754f4ca8e66d70eb5d020e362d11350953a49fe7958d12e93faf1b9b8ed0abb3b4fd6e62a4a0c27dce2a9

Download Submit
memory/1840-8-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/1840-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1840-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1840-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1840-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1840-1-0x00000000005E0000-0x00000000006E0000-memory.dmp

Filesize
1024KB

Download
memory/2640-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2640-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2640-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2640-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2640-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2720-17-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads