tofsee | 9c4312d0147836994aa702299b458611d02ede212817b5a677dfef41cd59ccc3

Analysis

max time kernel
145s
max time network
146s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
03-12-2024 00:22

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General

Target

badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe
Size

11.1MB
MD5

badca1fe5781d38c5ee80cb495550cf0
SHA1

a7d103fd9a1f2f95077d4b331e7a92ae843669e6
SHA256

9c4312d0147836994aa702299b458611d02ede212817b5a677dfef41cd59ccc3
SHA512

0694aa3d77d027c7196951a3fdd7361ddee98f421c30a0fd35819172566242e4d4008543e6ac5cfb34c6a7d9a1bf54e7576dd8674c6ef8a06a781830d9584b9a
SSDEEP

6144:x0YTUw7FfKLfRZm6WbrQd1svSnAKdKO3fhQCbG+2:hDhKLfRMbrA1WSAKddfHG

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\grkuugpd = "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
2928	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\grkuugpd\ImagePath = "C:\\Windows\\SysWOW64\\grkuugpd\\zcvdbdlv.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2708	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2680	zcvdbdlv.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2680 set thread context of 2708	2680	zcvdbdlv.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2344	sc.exe
2656	sc.exe
2976	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	zcvdbdlv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2724 wrote to memory of 2836	2724	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	31
PID 2724 wrote to memory of 2836	2724	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	31
PID 2724 wrote to memory of 2836	2724	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	31
PID 2724 wrote to memory of 2836	2724	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	31
PID 2724 wrote to memory of 2920	2724	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	33
PID 2724 wrote to memory of 2920	2724	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	33
PID 2724 wrote to memory of 2920	2724	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	33
PID 2724 wrote to memory of 2920	2724	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	33
PID 2724 wrote to memory of 2976	2724	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	35
PID 2724 wrote to memory of 2976	2724	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	35
PID 2724 wrote to memory of 2976	2724	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	35
PID 2724 wrote to memory of 2976	2724	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	35
PID 2724 wrote to memory of 2344	2724	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	37
PID 2724 wrote to memory of 2344	2724	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	37
PID 2724 wrote to memory of 2344	2724	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	37
PID 2724 wrote to memory of 2344	2724	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	37
PID 2724 wrote to memory of 2656	2724	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	39
PID 2724 wrote to memory of 2656	2724	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	39
PID 2724 wrote to memory of 2656	2724	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	39
PID 2724 wrote to memory of 2656	2724	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	39
PID 2724 wrote to memory of 2928	2724	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	42
PID 2724 wrote to memory of 2928	2724	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	42
PID 2724 wrote to memory of 2928	2724	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	42
PID 2724 wrote to memory of 2928	2724	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	42
PID 2680 wrote to memory of 2708	2680	zcvdbdlv.exe	44
PID 2680 wrote to memory of 2708	2680	zcvdbdlv.exe	44
PID 2680 wrote to memory of 2708	2680	zcvdbdlv.exe	44
PID 2680 wrote to memory of 2708	2680	zcvdbdlv.exe	44
PID 2680 wrote to memory of 2708	2680	zcvdbdlv.exe	44
PID 2680 wrote to memory of 2708	2680	zcvdbdlv.exe	44

C:\Users\Admin\AppData\Local\Temp\badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2724
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\grkuugpd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2836
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zcvdbdlv.exe" C:\Windows\SysWOW64\grkuugpd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2920
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create grkuugpd binPath= "C:\Windows\SysWOW64\grkuugpd\zcvdbdlv.exe /d\"C:\Users\Admin\AppData\Local\Temp\badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2976
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description grkuugpd "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2344
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start grkuugpd
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2656
- 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:2928

C:\Windows\SysWOW64\grkuugpd\zcvdbdlv.exe
C:\Windows\SysWOW64\grkuugpd\zcvdbdlv.exe /d"C:\Users\Admin\AppData\Local\Temp\badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2680
- 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:2708

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
13.9MB

MD5
13ae5520d96bd14c12e140ceffc0490b

SHA1
dfa17ea1a2fdb8c6750ca0c87165554c96b74af1

SHA256
26ea7b29dbfc077b7eb58b29f9c96bdb7777224c7ea910d0039d5cbf3c7b09d3

SHA512
4df29f5e2502e6964a60e707a90a28bc5ef76683c4f19d1038735d3c5021b9fda611f28e02fcdc78c3bd02fe500bd8b6994396a203e4743aa0dd91a89efbad88

Download Submit
memory/2680-17-0x0000000000400000-0x0000000001782000-memory.dmp

Filesize
19.5MB

Download
memory/2708-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2708-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2708-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2708-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2708-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2724-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2724-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2724-9-0x00000000002B0000-0x00000000002C3000-memory.dmp

Filesize
76KB

Download
memory/2724-8-0x0000000000400000-0x0000000001782000-memory.dmp

Filesize
19.5MB

Download
memory/2724-1-0x0000000001810000-0x0000000001910000-memory.dmp

Filesize
1024KB

Download
memory/2724-2-0x00000000002B0000-0x00000000002C3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads