tofsee | 2916efe4ba63200798dea1fe33a121c3e4c368bde3508df6bac75df00e6e164f

Analysis

max time kernel
148s
max time network
147s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
01-01-2025 07:20

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General

Target

JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe
Size

12.4MB
MD5

4c07ca13d4b55e7b3d847d37d0fbc387
SHA1

77c5851c82d2dbba05c72317cb4ed9917aa45654
SHA256

2916efe4ba63200798dea1fe33a121c3e4c368bde3508df6bac75df00e6e164f
SHA512

ef0f0c744b1629e6d0aed9ec94d24d68083b52ea3784d2243723254ad51c02ed77a4c016a31e6c641d28f16773dfca3e17a465d5e6789bd94beec321252ed212
SSDEEP

98304:fY3333333333333333333333333333333333333333333333333333333333333n:f

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\iylmgtvv = "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
2836	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\iylmgtvv\ImagePath = "C:\\Windows\\SysWOW64\\iylmgtvv\\kenxknse.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2736	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2080	kenxknse.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2080 set thread context of 2736	2080	kenxknse.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2216	sc.exe
1996	sc.exe
2940	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	kenxknse.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2404 wrote to memory of 2432	2404	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	30
PID 2404 wrote to memory of 2432	2404	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	30
PID 2404 wrote to memory of 2432	2404	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	30
PID 2404 wrote to memory of 2432	2404	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	30
PID 2404 wrote to memory of 1704	2404	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	32
PID 2404 wrote to memory of 1704	2404	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	32
PID 2404 wrote to memory of 1704	2404	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	32
PID 2404 wrote to memory of 1704	2404	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	32
PID 2404 wrote to memory of 2216	2404	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	34
PID 2404 wrote to memory of 2216	2404	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	34
PID 2404 wrote to memory of 2216	2404	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	34
PID 2404 wrote to memory of 2216	2404	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	34
PID 2404 wrote to memory of 1996	2404	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	36
PID 2404 wrote to memory of 1996	2404	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	36
PID 2404 wrote to memory of 1996	2404	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	36
PID 2404 wrote to memory of 1996	2404	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	36
PID 2404 wrote to memory of 2940	2404	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	38
PID 2404 wrote to memory of 2940	2404	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	38
PID 2404 wrote to memory of 2940	2404	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	38
PID 2404 wrote to memory of 2940	2404	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	38
PID 2404 wrote to memory of 2836	2404	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	41
PID 2404 wrote to memory of 2836	2404	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	41
PID 2404 wrote to memory of 2836	2404	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	41
PID 2404 wrote to memory of 2836	2404	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	41
PID 2080 wrote to memory of 2736	2080	kenxknse.exe	43
PID 2080 wrote to memory of 2736	2080	kenxknse.exe	43
PID 2080 wrote to memory of 2736	2080	kenxknse.exe	43
PID 2080 wrote to memory of 2736	2080	kenxknse.exe	43
PID 2080 wrote to memory of 2736	2080	kenxknse.exe	43
PID 2080 wrote to memory of 2736	2080	kenxknse.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2404
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\iylmgtvv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2432
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kenxknse.exe" C:\Windows\SysWOW64\iylmgtvv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1704
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create iylmgtvv binPath= "C:\Windows\SysWOW64\iylmgtvv\kenxknse.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2216
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description iylmgtvv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1996
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start iylmgtvv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2940
- 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:2836

C:\Windows\SysWOW64\iylmgtvv\kenxknse.exe
C:\Windows\SysWOW64\iylmgtvv\kenxknse.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2080
- 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:2736

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\kenxknse.exe

Filesize
14.7MB

MD5
8f205921c834f38497396239a6916969

SHA1
bddfd0ace3c9df9a8baf9d3eda0a9858cf9258a8

SHA256
38d19fad926aabaf4a696dc88ac43cba2f6d52fcb53e4c33656d1baac17af782

SHA512
5b26afeeb5323b895a3d3333573a610d7860b9c7c9a3d44830f0ba0627ab1494d999a7920e022c948a394067773acfd28f40ce649b5041658f2834c588efa430

Download Submit
memory/2080-15-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/2404-8-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/2404-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2404-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2404-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2404-1-0x0000000000550000-0x0000000000650000-memory.dmp

Filesize
1024KB

Download
memory/2404-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2736-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2736-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2736-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2736-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2736-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads