tofsee | 8b1bbcd253430c07b2d9888582b495e829dab19646eb740aad3c72d17532a0c4

Analysis

max time kernel
146s
max time network
146s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
15-12-2024 12:24

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General

Target

f3fbaee673990549c395e139685f204d_JaffaCakes118.exe
Size

301KB
MD5

f3fbaee673990549c395e139685f204d
SHA1

8f834c1c8c8576d2bfb68582f249f221e91344f5
SHA256

8b1bbcd253430c07b2d9888582b495e829dab19646eb740aad3c72d17532a0c4
SHA512

33fa4d05de64edb21b58b2bb2ff4f9e84f0878e5ab2fc080b210136ec38d64338ce087899ff6a51fa458ca34c5fca2df777f34bde2ad3a94074c4a5f55850d01
SSDEEP

6144:3n78bLTMCrVUrxhkdceG8RjhqJL6ejOOhxxdeTr/ekI:XIb3jVUxU1foL6evzxd6L

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\hcnoaimx = "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
2888	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\hcnoaimx\ImagePath = "C:\\Windows\\SysWOW64\\hcnoaimx\\hwjfrqjv.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2816	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2812	hwjfrqjv.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2812 set thread context of 2816	2812	hwjfrqjv.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2256	sc.exe
2740	sc.exe
2852	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	hwjfrqjv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f3fbaee673990549c395e139685f204d_JaffaCakes118.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2516 wrote to memory of 656	2516	f3fbaee673990549c395e139685f204d_JaffaCakes118.exe	30
PID 2516 wrote to memory of 656	2516	f3fbaee673990549c395e139685f204d_JaffaCakes118.exe	30
PID 2516 wrote to memory of 656	2516	f3fbaee673990549c395e139685f204d_JaffaCakes118.exe	30
PID 2516 wrote to memory of 656	2516	f3fbaee673990549c395e139685f204d_JaffaCakes118.exe	30
PID 2516 wrote to memory of 2352	2516	f3fbaee673990549c395e139685f204d_JaffaCakes118.exe	32
PID 2516 wrote to memory of 2352	2516	f3fbaee673990549c395e139685f204d_JaffaCakes118.exe	32
PID 2516 wrote to memory of 2352	2516	f3fbaee673990549c395e139685f204d_JaffaCakes118.exe	32
PID 2516 wrote to memory of 2352	2516	f3fbaee673990549c395e139685f204d_JaffaCakes118.exe	32
PID 2516 wrote to memory of 2256	2516	f3fbaee673990549c395e139685f204d_JaffaCakes118.exe	34
PID 2516 wrote to memory of 2256	2516	f3fbaee673990549c395e139685f204d_JaffaCakes118.exe	34
PID 2516 wrote to memory of 2256	2516	f3fbaee673990549c395e139685f204d_JaffaCakes118.exe	34
PID 2516 wrote to memory of 2256	2516	f3fbaee673990549c395e139685f204d_JaffaCakes118.exe	34
PID 2516 wrote to memory of 2740	2516	f3fbaee673990549c395e139685f204d_JaffaCakes118.exe	36
PID 2516 wrote to memory of 2740	2516	f3fbaee673990549c395e139685f204d_JaffaCakes118.exe	36
PID 2516 wrote to memory of 2740	2516	f3fbaee673990549c395e139685f204d_JaffaCakes118.exe	36
PID 2516 wrote to memory of 2740	2516	f3fbaee673990549c395e139685f204d_JaffaCakes118.exe	36
PID 2516 wrote to memory of 2852	2516	f3fbaee673990549c395e139685f204d_JaffaCakes118.exe	38
PID 2516 wrote to memory of 2852	2516	f3fbaee673990549c395e139685f204d_JaffaCakes118.exe	38
PID 2516 wrote to memory of 2852	2516	f3fbaee673990549c395e139685f204d_JaffaCakes118.exe	38
PID 2516 wrote to memory of 2852	2516	f3fbaee673990549c395e139685f204d_JaffaCakes118.exe	38
PID 2516 wrote to memory of 2888	2516	f3fbaee673990549c395e139685f204d_JaffaCakes118.exe	41
PID 2516 wrote to memory of 2888	2516	f3fbaee673990549c395e139685f204d_JaffaCakes118.exe	41
PID 2516 wrote to memory of 2888	2516	f3fbaee673990549c395e139685f204d_JaffaCakes118.exe	41
PID 2516 wrote to memory of 2888	2516	f3fbaee673990549c395e139685f204d_JaffaCakes118.exe	41
PID 2812 wrote to memory of 2816	2812	hwjfrqjv.exe	43
PID 2812 wrote to memory of 2816	2812	hwjfrqjv.exe	43
PID 2812 wrote to memory of 2816	2812	hwjfrqjv.exe	43
PID 2812 wrote to memory of 2816	2812	hwjfrqjv.exe	43
PID 2812 wrote to memory of 2816	2812	hwjfrqjv.exe	43
PID 2812 wrote to memory of 2816	2812	hwjfrqjv.exe	43

C:\Users\Admin\AppData\Local\Temp\f3fbaee673990549c395e139685f204d_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f3fbaee673990549c395e139685f204d_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2516
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hcnoaimx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:656
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\hwjfrqjv.exe" C:\Windows\SysWOW64\hcnoaimx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2352
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create hcnoaimx binPath= "C:\Windows\SysWOW64\hcnoaimx\hwjfrqjv.exe /d\"C:\Users\Admin\AppData\Local\Temp\f3fbaee673990549c395e139685f204d_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2256
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description hcnoaimx "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2740
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start hcnoaimx
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2852
- 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:2888

C:\Windows\SysWOW64\hcnoaimx\hwjfrqjv.exe
C:\Windows\SysWOW64\hcnoaimx\hwjfrqjv.exe /d"C:\Users\Admin\AppData\Local\Temp\f3fbaee673990549c395e139685f204d_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2812
- 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:2816

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\hwjfrqjv.exe

Filesize
11.8MB

MD5
e234d10a0008d94a8d00606fa1a36009

SHA1
bee04e3ee99003a8bad3b2c1547e18f5a22fcdd4

SHA256
ec50fead617f9b9f853b259b21d9353fa8c37c2b932c3c02e56e4adc7487fde2

SHA512
bd4e0406d43ae366f6cbdcda855dad3478c2c8ea0fea6e2f707878580a74bf0d4420f6b61af14691db1703c5ae00d8e402ba2deae4ce34ab5ade4e8f2058b2bb

Download Submit
memory/2516-8-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/2516-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2516-2-0x00000000002B0000-0x00000000002C3000-memory.dmp

Filesize
76KB

Download
memory/2516-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2516-9-0x00000000002B0000-0x00000000002C3000-memory.dmp

Filesize
76KB

Download
memory/2516-1-0x00000000004E0000-0x00000000005E0000-memory.dmp

Filesize
1024KB

Download
memory/2812-16-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/2816-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2816-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2816-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2816-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2816-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads