tofsee | 3cac8d9e28a92e9d0d5b598b7f5f204b770ed4c05c12dd62e320bf480fc67ea1

Analysis

max time kernel
145s
max time network
145s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
29-12-2024 22:02

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General

Target

JaffaCakes118_3cac8d9e28a92e9d0d5b598b7f5f204b770ed4c05c12dd62e320bf480fc67ea1.exe
Size

237KB
MD5

7a1a48ccd69108c3d310aee449113b16
SHA1

c60353c5f012f5203f3d3a13bf10ef98acb34bc0
SHA256

3cac8d9e28a92e9d0d5b598b7f5f204b770ed4c05c12dd62e320bf480fc67ea1
SHA512

2d36b02981ae72635728f4cc95ce2e47649ae9b98ce6c2e407eb00f6745dabacfa3df5dc5f398a3f73c7038ac17b6a2d80ee3486d1881d2ae850f090a7423fd1
SSDEEP

6144:K4oK+W6n72e2Xr7OoNH9m8Pr/lJQlfZJqK:KBSY72e2XnNH9mq/l+b

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\tcfmzugj = "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
2804	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\tcfmzugj\ImagePath = "C:\\Windows\\SysWOW64\\tcfmzugj\\ehfaublv.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2840	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2788	ehfaublv.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2788 set thread context of 2840	2788	ehfaublv.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2480	sc.exe
2660	sc.exe
2696	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	ehfaublv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_3cac8d9e28a92e9d0d5b598b7f5f204b770ed4c05c12dd62e320bf480fc67ea1.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	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 3024 wrote to memory of 588	3024	JaffaCakes118_3cac8d9e28a92e9d0d5b598b7f5f204b770ed4c05c12dd62e320bf480fc67ea1.exe	31
PID 3024 wrote to memory of 588	3024	JaffaCakes118_3cac8d9e28a92e9d0d5b598b7f5f204b770ed4c05c12dd62e320bf480fc67ea1.exe	31
PID 3024 wrote to memory of 588	3024	JaffaCakes118_3cac8d9e28a92e9d0d5b598b7f5f204b770ed4c05c12dd62e320bf480fc67ea1.exe	31
PID 3024 wrote to memory of 588	3024	JaffaCakes118_3cac8d9e28a92e9d0d5b598b7f5f204b770ed4c05c12dd62e320bf480fc67ea1.exe	31
PID 3024 wrote to memory of 1512	3024	JaffaCakes118_3cac8d9e28a92e9d0d5b598b7f5f204b770ed4c05c12dd62e320bf480fc67ea1.exe	33
PID 3024 wrote to memory of 1512	3024	JaffaCakes118_3cac8d9e28a92e9d0d5b598b7f5f204b770ed4c05c12dd62e320bf480fc67ea1.exe	33
PID 3024 wrote to memory of 1512	3024	JaffaCakes118_3cac8d9e28a92e9d0d5b598b7f5f204b770ed4c05c12dd62e320bf480fc67ea1.exe	33
PID 3024 wrote to memory of 1512	3024	JaffaCakes118_3cac8d9e28a92e9d0d5b598b7f5f204b770ed4c05c12dd62e320bf480fc67ea1.exe	33
PID 3024 wrote to memory of 2480	3024	JaffaCakes118_3cac8d9e28a92e9d0d5b598b7f5f204b770ed4c05c12dd62e320bf480fc67ea1.exe	35
PID 3024 wrote to memory of 2480	3024	JaffaCakes118_3cac8d9e28a92e9d0d5b598b7f5f204b770ed4c05c12dd62e320bf480fc67ea1.exe	35
PID 3024 wrote to memory of 2480	3024	JaffaCakes118_3cac8d9e28a92e9d0d5b598b7f5f204b770ed4c05c12dd62e320bf480fc67ea1.exe	35
PID 3024 wrote to memory of 2480	3024	JaffaCakes118_3cac8d9e28a92e9d0d5b598b7f5f204b770ed4c05c12dd62e320bf480fc67ea1.exe	35
PID 3024 wrote to memory of 2660	3024	JaffaCakes118_3cac8d9e28a92e9d0d5b598b7f5f204b770ed4c05c12dd62e320bf480fc67ea1.exe	37
PID 3024 wrote to memory of 2660	3024	JaffaCakes118_3cac8d9e28a92e9d0d5b598b7f5f204b770ed4c05c12dd62e320bf480fc67ea1.exe	37
PID 3024 wrote to memory of 2660	3024	JaffaCakes118_3cac8d9e28a92e9d0d5b598b7f5f204b770ed4c05c12dd62e320bf480fc67ea1.exe	37
PID 3024 wrote to memory of 2660	3024	JaffaCakes118_3cac8d9e28a92e9d0d5b598b7f5f204b770ed4c05c12dd62e320bf480fc67ea1.exe	37
PID 3024 wrote to memory of 2696	3024	JaffaCakes118_3cac8d9e28a92e9d0d5b598b7f5f204b770ed4c05c12dd62e320bf480fc67ea1.exe	39
PID 3024 wrote to memory of 2696	3024	JaffaCakes118_3cac8d9e28a92e9d0d5b598b7f5f204b770ed4c05c12dd62e320bf480fc67ea1.exe	39
PID 3024 wrote to memory of 2696	3024	JaffaCakes118_3cac8d9e28a92e9d0d5b598b7f5f204b770ed4c05c12dd62e320bf480fc67ea1.exe	39
PID 3024 wrote to memory of 2696	3024	JaffaCakes118_3cac8d9e28a92e9d0d5b598b7f5f204b770ed4c05c12dd62e320bf480fc67ea1.exe	39
PID 3024 wrote to memory of 2804	3024	JaffaCakes118_3cac8d9e28a92e9d0d5b598b7f5f204b770ed4c05c12dd62e320bf480fc67ea1.exe	42
PID 3024 wrote to memory of 2804	3024	JaffaCakes118_3cac8d9e28a92e9d0d5b598b7f5f204b770ed4c05c12dd62e320bf480fc67ea1.exe	42
PID 3024 wrote to memory of 2804	3024	JaffaCakes118_3cac8d9e28a92e9d0d5b598b7f5f204b770ed4c05c12dd62e320bf480fc67ea1.exe	42
PID 3024 wrote to memory of 2804	3024	JaffaCakes118_3cac8d9e28a92e9d0d5b598b7f5f204b770ed4c05c12dd62e320bf480fc67ea1.exe	42
PID 2788 wrote to memory of 2840	2788	ehfaublv.exe	44
PID 2788 wrote to memory of 2840	2788	ehfaublv.exe	44
PID 2788 wrote to memory of 2840	2788	ehfaublv.exe	44
PID 2788 wrote to memory of 2840	2788	ehfaublv.exe	44
PID 2788 wrote to memory of 2840	2788	ehfaublv.exe	44
PID 2788 wrote to memory of 2840	2788	ehfaublv.exe	44

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3cac8d9e28a92e9d0d5b598b7f5f204b770ed4c05c12dd62e320bf480fc67ea1.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3cac8d9e28a92e9d0d5b598b7f5f204b770ed4c05c12dd62e320bf480fc67ea1.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3024
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tcfmzugj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:588
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ehfaublv.exe" C:\Windows\SysWOW64\tcfmzugj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1512
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create tcfmzugj binPath= "C:\Windows\SysWOW64\tcfmzugj\ehfaublv.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3cac8d9e28a92e9d0d5b598b7f5f204b770ed4c05c12dd62e320bf480fc67ea1.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2480
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description tcfmzugj "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2660
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start tcfmzugj
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2696
- 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:2804

C:\Windows\SysWOW64\tcfmzugj\ehfaublv.exe
C:\Windows\SysWOW64\tcfmzugj\ehfaublv.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3cac8d9e28a92e9d0d5b598b7f5f204b770ed4c05c12dd62e320bf480fc67ea1.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2788
- 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:2840

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\ehfaublv.exe

Filesize
14.5MB

MD5
80884b30c8ebb84ebbcfd7b38a42b364

SHA1
c768b4ceec0e0cf10b6a0c42483bc7888ec21eb2

SHA256
7fe4be869ff2d1a2391fc162694fcd707bcc0d77352ea9995c387ef338035dc5

SHA512
f33fef22f71b08130399428289d24f826ad8434a808d3af412146c242db25627f3affb2d724dd2412470cc2e950680c771dd509fc082625d00ea90b56c155e52

Download Submit
memory/2788-18-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/2840-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2840-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2840-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2840-12-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2840-19-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3024-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3024-8-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/3024-11-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3024-10-0x00000000008F0000-0x00000000009F0000-memory.dmp

Filesize
1024KB

Download
memory/3024-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/3024-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/3024-1-0x00000000008F0000-0x00000000009F0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads