tofsee | 1344f45dbbb1a9bd9854fa07e0db70efaa8ebfa6359c645d4d4739a3c06cbda6

Analysis

max time kernel
150s
max time network
148s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
04-12-2024 18:33

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General

Target

c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe
Size

14.2MB
MD5

c3d9fe2d943feda5de737a9048437366
SHA1

6b520caa5749359728296add5bcbe968fe4def0f
SHA256

1344f45dbbb1a9bd9854fa07e0db70efaa8ebfa6359c645d4d4739a3c06cbda6
SHA512

66b7e5418e7ba66e5b0b2348fd1046d97cd99bc6857b2d4521081f4a6e4ac6f10c735b29375e4215ed75f86abfdbf4242796cde629d59017fb60ef33f67fb86d
SSDEEP

24576:Kkp7SCOI1SDGI1SDGI1SDGI1SDGI1SDGI1SDGI1SDGI1SDGI1SDGI1SDGI1SDGI+:KG

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\ivtgvhfa = "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
3024	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\ivtgvhfa\ImagePath = "C:\\Windows\\SysWOW64\\ivtgvhfa\\ixkgsrkw.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2704	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2968	ixkgsrkw.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2968 set thread context of 2704	2968	ixkgsrkw.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2848	sc.exe
3064	sc.exe
408	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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ixkgsrkw.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2308 wrote to memory of 2044	2308	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	30
PID 2308 wrote to memory of 2044	2308	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	30
PID 2308 wrote to memory of 2044	2308	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	30
PID 2308 wrote to memory of 2044	2308	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	30
PID 2308 wrote to memory of 2800	2308	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	32
PID 2308 wrote to memory of 2800	2308	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	32
PID 2308 wrote to memory of 2800	2308	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	32
PID 2308 wrote to memory of 2800	2308	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	32
PID 2308 wrote to memory of 2848	2308	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	34
PID 2308 wrote to memory of 2848	2308	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	34
PID 2308 wrote to memory of 2848	2308	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	34
PID 2308 wrote to memory of 2848	2308	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	34
PID 2308 wrote to memory of 3064	2308	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	36
PID 2308 wrote to memory of 3064	2308	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	36
PID 2308 wrote to memory of 3064	2308	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	36
PID 2308 wrote to memory of 3064	2308	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	36
PID 2308 wrote to memory of 408	2308	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	38
PID 2308 wrote to memory of 408	2308	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	38
PID 2308 wrote to memory of 408	2308	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	38
PID 2308 wrote to memory of 408	2308	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	38
PID 2308 wrote to memory of 3024	2308	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	41
PID 2308 wrote to memory of 3024	2308	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	41
PID 2308 wrote to memory of 3024	2308	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	41
PID 2308 wrote to memory of 3024	2308	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	41
PID 2968 wrote to memory of 2704	2968	ixkgsrkw.exe	43
PID 2968 wrote to memory of 2704	2968	ixkgsrkw.exe	43
PID 2968 wrote to memory of 2704	2968	ixkgsrkw.exe	43
PID 2968 wrote to memory of 2704	2968	ixkgsrkw.exe	43
PID 2968 wrote to memory of 2704	2968	ixkgsrkw.exe	43
PID 2968 wrote to memory of 2704	2968	ixkgsrkw.exe	43

C:\Users\Admin\AppData\Local\Temp\c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2308
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ivtgvhfa\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2044
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ixkgsrkw.exe" C:\Windows\SysWOW64\ivtgvhfa\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2800
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ivtgvhfa binPath= "C:\Windows\SysWOW64\ivtgvhfa\ixkgsrkw.exe /d\"C:\Users\Admin\AppData\Local\Temp\c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2848
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ivtgvhfa "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3064
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ivtgvhfa
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:408
- 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:3024

C:\Windows\SysWOW64\ivtgvhfa\ixkgsrkw.exe
C:\Windows\SysWOW64\ivtgvhfa\ixkgsrkw.exe /d"C:\Users\Admin\AppData\Local\Temp\c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2968
- 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:2704

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\ixkgsrkw.exe

Filesize
12.6MB

MD5
8c6c15c0dd3a94ab61ba0ef3f54255df

SHA1
07c64a05d05d3b9b12d75f313fd3f80d35820d59

SHA256
7aa5263b0ca1685bb004fc03c3a11eccb19957a9b8a940e64f83fa40e36cbbe5

SHA512
c9ded1bbd4a0ff25728e453d6de0705030bf41f1ef586e42ff547129aff6c525d4358ab094b21c22d9b2a3a9bea7e0d5c7d290fa5c105d654df2bfb5f798a388

Download Submit
memory/2308-8-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2308-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2308-2-0x00000000002D0000-0x00000000002E3000-memory.dmp

Filesize
76KB

Download
memory/2308-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2308-9-0x00000000002D0000-0x00000000002E3000-memory.dmp

Filesize
76KB

Download
memory/2308-1-0x0000000000500000-0x0000000000600000-memory.dmp

Filesize
1024KB

Download
memory/2704-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2704-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2704-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2704-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2704-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2968-15-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads