tofsee | e717b1c7b77d59586e67ced2da5e4e42280f97e1a6abd3f12dc9c671fb14b41e

Analysis

max time kernel
149s
max time network
149s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
25-12-2024 05:10

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General

Target

JaffaCakes118_e717b1c7b77d59586e67ced2da5e4e42280f97e1a6abd3f12dc9c671fb14b41e.exe
Size

285KB
MD5

5b466970f8e25d73b937aa1578dd44ba
SHA1

9bb38b02e5e6b1e0352408357ffcad753c339f12
SHA256

e717b1c7b77d59586e67ced2da5e4e42280f97e1a6abd3f12dc9c671fb14b41e
SHA512

536554bb9ddaa3a9ea1d5b50726efc60fd72008868716b376dc6eef3049df76e02b3cff7e52621db6d247e7e7a56f05d71515d07dfa182071e6d137b822f289b
SSDEEP

6144:SKOnV2tU9Xp8YYQTPoSEHnwuzbgwu6L7ITsqSigaTwVf:unVpiYvTPyHwunnn7s

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

quadoil.ru

lakeflex.ru

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\fcusbwhy = "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
2744	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\fcusbwhy\ImagePath = "C:\\Windows\\SysWOW64\\fcusbwhy\\czkpnxur.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
3020	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2728	czkpnxur.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2728 set thread context of 3020	2728	czkpnxur.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2304	sc.exe
2356	sc.exe
2224	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_e717b1c7b77d59586e67ced2da5e4e42280f97e1a6abd3f12dc9c671fb14b41e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	czkpnxur.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2200 wrote to memory of 1932	2200	JaffaCakes118_e717b1c7b77d59586e67ced2da5e4e42280f97e1a6abd3f12dc9c671fb14b41e.exe	30
PID 2200 wrote to memory of 1932	2200	JaffaCakes118_e717b1c7b77d59586e67ced2da5e4e42280f97e1a6abd3f12dc9c671fb14b41e.exe	30
PID 2200 wrote to memory of 1932	2200	JaffaCakes118_e717b1c7b77d59586e67ced2da5e4e42280f97e1a6abd3f12dc9c671fb14b41e.exe	30
PID 2200 wrote to memory of 1932	2200	JaffaCakes118_e717b1c7b77d59586e67ced2da5e4e42280f97e1a6abd3f12dc9c671fb14b41e.exe	30
PID 2200 wrote to memory of 1872	2200	JaffaCakes118_e717b1c7b77d59586e67ced2da5e4e42280f97e1a6abd3f12dc9c671fb14b41e.exe	32
PID 2200 wrote to memory of 1872	2200	JaffaCakes118_e717b1c7b77d59586e67ced2da5e4e42280f97e1a6abd3f12dc9c671fb14b41e.exe	32
PID 2200 wrote to memory of 1872	2200	JaffaCakes118_e717b1c7b77d59586e67ced2da5e4e42280f97e1a6abd3f12dc9c671fb14b41e.exe	32
PID 2200 wrote to memory of 1872	2200	JaffaCakes118_e717b1c7b77d59586e67ced2da5e4e42280f97e1a6abd3f12dc9c671fb14b41e.exe	32
PID 2200 wrote to memory of 2304	2200	JaffaCakes118_e717b1c7b77d59586e67ced2da5e4e42280f97e1a6abd3f12dc9c671fb14b41e.exe	34
PID 2200 wrote to memory of 2304	2200	JaffaCakes118_e717b1c7b77d59586e67ced2da5e4e42280f97e1a6abd3f12dc9c671fb14b41e.exe	34
PID 2200 wrote to memory of 2304	2200	JaffaCakes118_e717b1c7b77d59586e67ced2da5e4e42280f97e1a6abd3f12dc9c671fb14b41e.exe	34
PID 2200 wrote to memory of 2304	2200	JaffaCakes118_e717b1c7b77d59586e67ced2da5e4e42280f97e1a6abd3f12dc9c671fb14b41e.exe	34
PID 2200 wrote to memory of 2356	2200	JaffaCakes118_e717b1c7b77d59586e67ced2da5e4e42280f97e1a6abd3f12dc9c671fb14b41e.exe	36
PID 2200 wrote to memory of 2356	2200	JaffaCakes118_e717b1c7b77d59586e67ced2da5e4e42280f97e1a6abd3f12dc9c671fb14b41e.exe	36
PID 2200 wrote to memory of 2356	2200	JaffaCakes118_e717b1c7b77d59586e67ced2da5e4e42280f97e1a6abd3f12dc9c671fb14b41e.exe	36
PID 2200 wrote to memory of 2356	2200	JaffaCakes118_e717b1c7b77d59586e67ced2da5e4e42280f97e1a6abd3f12dc9c671fb14b41e.exe	36
PID 2200 wrote to memory of 2224	2200	JaffaCakes118_e717b1c7b77d59586e67ced2da5e4e42280f97e1a6abd3f12dc9c671fb14b41e.exe	38
PID 2200 wrote to memory of 2224	2200	JaffaCakes118_e717b1c7b77d59586e67ced2da5e4e42280f97e1a6abd3f12dc9c671fb14b41e.exe	38
PID 2200 wrote to memory of 2224	2200	JaffaCakes118_e717b1c7b77d59586e67ced2da5e4e42280f97e1a6abd3f12dc9c671fb14b41e.exe	38
PID 2200 wrote to memory of 2224	2200	JaffaCakes118_e717b1c7b77d59586e67ced2da5e4e42280f97e1a6abd3f12dc9c671fb14b41e.exe	38
PID 2200 wrote to memory of 2744	2200	JaffaCakes118_e717b1c7b77d59586e67ced2da5e4e42280f97e1a6abd3f12dc9c671fb14b41e.exe	41
PID 2200 wrote to memory of 2744	2200	JaffaCakes118_e717b1c7b77d59586e67ced2da5e4e42280f97e1a6abd3f12dc9c671fb14b41e.exe	41
PID 2200 wrote to memory of 2744	2200	JaffaCakes118_e717b1c7b77d59586e67ced2da5e4e42280f97e1a6abd3f12dc9c671fb14b41e.exe	41
PID 2200 wrote to memory of 2744	2200	JaffaCakes118_e717b1c7b77d59586e67ced2da5e4e42280f97e1a6abd3f12dc9c671fb14b41e.exe	41
PID 2728 wrote to memory of 3020	2728	czkpnxur.exe	43
PID 2728 wrote to memory of 3020	2728	czkpnxur.exe	43
PID 2728 wrote to memory of 3020	2728	czkpnxur.exe	43
PID 2728 wrote to memory of 3020	2728	czkpnxur.exe	43
PID 2728 wrote to memory of 3020	2728	czkpnxur.exe	43
PID 2728 wrote to memory of 3020	2728	czkpnxur.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e717b1c7b77d59586e67ced2da5e4e42280f97e1a6abd3f12dc9c671fb14b41e.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e717b1c7b77d59586e67ced2da5e4e42280f97e1a6abd3f12dc9c671fb14b41e.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2200
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fcusbwhy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1932
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\czkpnxur.exe" C:\Windows\SysWOW64\fcusbwhy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1872
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fcusbwhy binPath= "C:\Windows\SysWOW64\fcusbwhy\czkpnxur.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e717b1c7b77d59586e67ced2da5e4e42280f97e1a6abd3f12dc9c671fb14b41e.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2304
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fcusbwhy "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2356
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fcusbwhy
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2224
- 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:2744

C:\Windows\SysWOW64\fcusbwhy\czkpnxur.exe
C:\Windows\SysWOW64\fcusbwhy\czkpnxur.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e717b1c7b77d59586e67ced2da5e4e42280f97e1a6abd3f12dc9c671fb14b41e.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2728
- 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:3020

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\czkpnxur.exe

Filesize
11.0MB

MD5
9807d6673c79b4261a9677030dfeb89f

SHA1
a7e4b28438fa558c9f920baee52623d3674c9e31

SHA256
37636fedf8a9a7864a84b8b1fcea49409738b29e53dffe5ceb25cfcb79294c5c

SHA512
77dbf47fec7faca7b6613af2e9ba75e2383a58b92b50bb4892fe9ebcde1311c84bbece3cee8f92dda3da57ee90cd641cd27fcefafe73daefbbdd48a48e342c5e

Download Submit
memory/2200-7-0x0000000000220000-0x000000000022D000-memory.dmp

Filesize
52KB

Download
memory/2200-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2200-1-0x0000000000230000-0x0000000000243000-memory.dmp

Filesize
76KB

Download
memory/2200-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2200-8-0x0000000000230000-0x0000000000243000-memory.dmp

Filesize
76KB

Download
memory/2200-0-0x0000000000220000-0x000000000022D000-memory.dmp

Filesize
52KB

Download
memory/2200-6-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/2728-16-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/3020-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3020-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3020-13-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3020-10-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3020-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads