tofsee | 277f281214a01778ea5c17962dba15c395a92a4e9e54c63c97439d2e11336688

Analysis

max time kernel
145s
max time network
145s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
04-10-2024 01:27

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General

Target

11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe
Size

14.7MB
MD5

11442e761c4488c3e4e1d1176ec8ee45
SHA1

5b8927c26a6b5795a7e8f85ac1edfc8293960b27
SHA256

277f281214a01778ea5c17962dba15c395a92a4e9e54c63c97439d2e11336688
SHA512

7248eb6ab35462704a316090fbbf70bbfd202f75062166e3659820cd009343334a9dd4bf00b640ab0f9bdbf35085abc1295ec5ce78e5485984646b3a864b203a
SSDEEP

196608:JX6666666666666666666666666666666666666666666666666666666666666y:J

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

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\nkswsjrk = "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
3052	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\nkswsjrk\ImagePath = "C:\\Windows\\SysWOW64\\nkswsjrk\\zcvdbdlv.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2604	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3064	zcvdbdlv.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3064 set thread context of 2604	3064	zcvdbdlv.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2944	sc.exe
2548	sc.exe
2700	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	zcvdbdlv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.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	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2480 wrote to memory of 2632	2480	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	30
PID 2480 wrote to memory of 2632	2480	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	30
PID 2480 wrote to memory of 2632	2480	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	30
PID 2480 wrote to memory of 2632	2480	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	30
PID 2480 wrote to memory of 2680	2480	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	32
PID 2480 wrote to memory of 2680	2480	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	32
PID 2480 wrote to memory of 2680	2480	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	32
PID 2480 wrote to memory of 2680	2480	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	32
PID 2480 wrote to memory of 2944	2480	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	34
PID 2480 wrote to memory of 2944	2480	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	34
PID 2480 wrote to memory of 2944	2480	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	34
PID 2480 wrote to memory of 2944	2480	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	34
PID 2480 wrote to memory of 2548	2480	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	36
PID 2480 wrote to memory of 2548	2480	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	36
PID 2480 wrote to memory of 2548	2480	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	36
PID 2480 wrote to memory of 2548	2480	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	36
PID 2480 wrote to memory of 2700	2480	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	38
PID 2480 wrote to memory of 2700	2480	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	38
PID 2480 wrote to memory of 2700	2480	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	38
PID 2480 wrote to memory of 2700	2480	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	38
PID 2480 wrote to memory of 3052	2480	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	41
PID 2480 wrote to memory of 3052	2480	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	41
PID 2480 wrote to memory of 3052	2480	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	41
PID 2480 wrote to memory of 3052	2480	11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe	41
PID 3064 wrote to memory of 2604	3064	zcvdbdlv.exe	43
PID 3064 wrote to memory of 2604	3064	zcvdbdlv.exe	43
PID 3064 wrote to memory of 2604	3064	zcvdbdlv.exe	43
PID 3064 wrote to memory of 2604	3064	zcvdbdlv.exe	43
PID 3064 wrote to memory of 2604	3064	zcvdbdlv.exe	43
PID 3064 wrote to memory of 2604	3064	zcvdbdlv.exe	43

C:\Users\Admin\AppData\Local\Temp\11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2480
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nkswsjrk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2632
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zcvdbdlv.exe" C:\Windows\SysWOW64\nkswsjrk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2680
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nkswsjrk binPath= "C:\Windows\SysWOW64\nkswsjrk\zcvdbdlv.exe /d\"C:\Users\Admin\AppData\Local\Temp\11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2944
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nkswsjrk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2548
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nkswsjrk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2700
- 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:3052

C:\Windows\SysWOW64\nkswsjrk\zcvdbdlv.exe
C:\Windows\SysWOW64\nkswsjrk\zcvdbdlv.exe /d"C:\Users\Admin\AppData\Local\Temp\11442e761c4488c3e4e1d1176ec8ee45_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3064
- 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:2604

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\zcvdbdlv.exe

Filesize
10.8MB

MD5
111524b74be971b67bee8667c897819b

SHA1
c000604256061c6b0afa25624d3f23244224da39

SHA256
d16b6d4ca6a04484b32f8d4c1f6b5e75c28c86d0c5db386905e8ec40e87d8242

SHA512
0ed4d686b81159aeadae7d661be8dc95b9050315287a6f481b77abf4ac096ff259639b313c32b2456128f2cd4fb5339816109cbe219eed5333cc08c8d3d3cd38

Download Submit
memory/2480-8-0x0000000000400000-0x000000000086F000-memory.dmp

Filesize
4.4MB

Download
memory/2480-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2480-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2480-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2480-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2480-1-0x0000000000A00000-0x0000000000B00000-memory.dmp

Filesize
1024KB

Download
memory/2604-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2604-16-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2604-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2604-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2604-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/3064-17-0x0000000000400000-0x000000000086F000-memory.dmp

Filesize
4.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads