tofsee | 6b106fead48601e7842cdcf7d3220e4b9da5f82fbc189a4b83401ee5b13a496b

Analysis

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

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
05-01-2025 15:03

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General

Target

JaffaCakes118_ac1587025078cd63e45f7fad10149100.exe
Size

12.8MB
MD5

ac1587025078cd63e45f7fad10149100
SHA1

e377d25cb1cc15d29a4a27dc4f53c9124085d902
SHA256

6b106fead48601e7842cdcf7d3220e4b9da5f82fbc189a4b83401ee5b13a496b
SHA512

85eff64f830223362020b53869fed151e20201130633fe8f54502a2616cdb63a1c835f0a55e92778fa2d9755f11c84f918d3a717644311de1a4f003077442f01
SSDEEP

12288:LZj/zVtLo3uWXQDWT7CfuUNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNL:LV/zVxTWT7CW

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\gvtqdsh = "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
2772	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\gvtqdsh\ImagePath = "C:\\Windows\\SysWOW64\\gvtqdsh\\cjvirefz.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2868	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2472	cjvirefz.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2472 set thread context of 2868	2472	cjvirefz.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
1824	sc.exe
2104	sc.exe
2724	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_ac1587025078cd63e45f7fad10149100.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	cjvirefz.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2568 wrote to memory of 2564	2568	JaffaCakes118_ac1587025078cd63e45f7fad10149100.exe	30
PID 2568 wrote to memory of 2564	2568	JaffaCakes118_ac1587025078cd63e45f7fad10149100.exe	30
PID 2568 wrote to memory of 2564	2568	JaffaCakes118_ac1587025078cd63e45f7fad10149100.exe	30
PID 2568 wrote to memory of 2564	2568	JaffaCakes118_ac1587025078cd63e45f7fad10149100.exe	30
PID 2568 wrote to memory of 948	2568	JaffaCakes118_ac1587025078cd63e45f7fad10149100.exe	32
PID 2568 wrote to memory of 948	2568	JaffaCakes118_ac1587025078cd63e45f7fad10149100.exe	32
PID 2568 wrote to memory of 948	2568	JaffaCakes118_ac1587025078cd63e45f7fad10149100.exe	32
PID 2568 wrote to memory of 948	2568	JaffaCakes118_ac1587025078cd63e45f7fad10149100.exe	32
PID 2568 wrote to memory of 1824	2568	JaffaCakes118_ac1587025078cd63e45f7fad10149100.exe	34
PID 2568 wrote to memory of 1824	2568	JaffaCakes118_ac1587025078cd63e45f7fad10149100.exe	34
PID 2568 wrote to memory of 1824	2568	JaffaCakes118_ac1587025078cd63e45f7fad10149100.exe	34
PID 2568 wrote to memory of 1824	2568	JaffaCakes118_ac1587025078cd63e45f7fad10149100.exe	34
PID 2568 wrote to memory of 2104	2568	JaffaCakes118_ac1587025078cd63e45f7fad10149100.exe	36
PID 2568 wrote to memory of 2104	2568	JaffaCakes118_ac1587025078cd63e45f7fad10149100.exe	36
PID 2568 wrote to memory of 2104	2568	JaffaCakes118_ac1587025078cd63e45f7fad10149100.exe	36
PID 2568 wrote to memory of 2104	2568	JaffaCakes118_ac1587025078cd63e45f7fad10149100.exe	36
PID 2568 wrote to memory of 2724	2568	JaffaCakes118_ac1587025078cd63e45f7fad10149100.exe	38
PID 2568 wrote to memory of 2724	2568	JaffaCakes118_ac1587025078cd63e45f7fad10149100.exe	38
PID 2568 wrote to memory of 2724	2568	JaffaCakes118_ac1587025078cd63e45f7fad10149100.exe	38
PID 2568 wrote to memory of 2724	2568	JaffaCakes118_ac1587025078cd63e45f7fad10149100.exe	38
PID 2568 wrote to memory of 2772	2568	JaffaCakes118_ac1587025078cd63e45f7fad10149100.exe	41
PID 2568 wrote to memory of 2772	2568	JaffaCakes118_ac1587025078cd63e45f7fad10149100.exe	41
PID 2568 wrote to memory of 2772	2568	JaffaCakes118_ac1587025078cd63e45f7fad10149100.exe	41
PID 2568 wrote to memory of 2772	2568	JaffaCakes118_ac1587025078cd63e45f7fad10149100.exe	41
PID 2472 wrote to memory of 2868	2472	cjvirefz.exe	43
PID 2472 wrote to memory of 2868	2472	cjvirefz.exe	43
PID 2472 wrote to memory of 2868	2472	cjvirefz.exe	43
PID 2472 wrote to memory of 2868	2472	cjvirefz.exe	43
PID 2472 wrote to memory of 2868	2472	cjvirefz.exe	43
PID 2472 wrote to memory of 2868	2472	cjvirefz.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ac1587025078cd63e45f7fad10149100.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ac1587025078cd63e45f7fad10149100.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2568
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gvtqdsh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2564
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cjvirefz.exe" C:\Windows\SysWOW64\gvtqdsh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:948
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create gvtqdsh binPath= "C:\Windows\SysWOW64\gvtqdsh\cjvirefz.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ac1587025078cd63e45f7fad10149100.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1824
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description gvtqdsh "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2104
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start gvtqdsh
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2724
- 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:2772

C:\Windows\SysWOW64\gvtqdsh\cjvirefz.exe
C:\Windows\SysWOW64\gvtqdsh\cjvirefz.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ac1587025078cd63e45f7fad10149100.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2472
- 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:2868

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\cjvirefz.exe

Filesize
10.2MB

MD5
73d3f391a1ba5ae86618441ddb826dec

SHA1
c9b9e30a3d84d3f83321faf49b56b1d612a600ba

SHA256
c1350e398e729df1853ca59b25bc9f4d96879abd27d0374bd333ce40538a469c

SHA512
e11edec5d727d59275ccb3f97a7d194699b614817d95c692ca74773eff1750eec07b87a26943e1090c8579db65aff11ad7f5e095f9e972e44cb3cff45b0f1673

Download Submit
memory/2472-17-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/2568-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2568-1-0x0000000000620000-0x0000000000720000-memory.dmp

Filesize
1024KB

Download
memory/2568-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2568-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2568-8-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/2568-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2868-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2868-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2868-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2868-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2868-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads