tofsee | 65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0

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
25-12-2024 13:10

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General

Target

JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe
Size

284KB
MD5

ebc386c5e58be126d9e8317f518bde8a
SHA1

d1e5459b19c9b4d8cec638a9730b38d33a57ec29
SHA256

65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0
SHA512

9a824af4e2c3e1b5040162360a191488b311475bdf742ad9ae23cfdff158b59dad1768ccb73a2a86f77c402d6719793b7fa88d3c74a9500afca641e6cf634239
SSDEEP

3072:2QWV+ioVH8ycDJdRc1/Q3RNyqUy39S20keU8/W8JMu2YaqK6nq1P93Y:VWVZ8yDJk1/QBNfP9Pu2YaqKua

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\txaihyko = "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
2900	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\txaihyko\ImagePath = "C:\\Windows\\SysWOW64\\txaihyko\\kavhbnrj.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2628	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2828	kavhbnrj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2828 set thread context of 2628	2828	kavhbnrj.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
352	sc.exe
2040	sc.exe
2740	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	kavhbnrj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.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	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2388 wrote to memory of 2552	2388	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	30
PID 2388 wrote to memory of 2552	2388	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	30
PID 2388 wrote to memory of 2552	2388	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	30
PID 2388 wrote to memory of 2552	2388	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	30
PID 2388 wrote to memory of 2028	2388	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	32
PID 2388 wrote to memory of 2028	2388	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	32
PID 2388 wrote to memory of 2028	2388	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	32
PID 2388 wrote to memory of 2028	2388	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	32
PID 2388 wrote to memory of 352	2388	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	34
PID 2388 wrote to memory of 352	2388	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	34
PID 2388 wrote to memory of 352	2388	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	34
PID 2388 wrote to memory of 352	2388	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	34
PID 2388 wrote to memory of 2040	2388	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	36
PID 2388 wrote to memory of 2040	2388	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	36
PID 2388 wrote to memory of 2040	2388	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	36
PID 2388 wrote to memory of 2040	2388	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	36
PID 2388 wrote to memory of 2740	2388	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	38
PID 2388 wrote to memory of 2740	2388	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	38
PID 2388 wrote to memory of 2740	2388	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	38
PID 2388 wrote to memory of 2740	2388	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	38
PID 2388 wrote to memory of 2900	2388	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	41
PID 2388 wrote to memory of 2900	2388	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	41
PID 2388 wrote to memory of 2900	2388	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	41
PID 2388 wrote to memory of 2900	2388	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	41
PID 2828 wrote to memory of 2628	2828	kavhbnrj.exe	43
PID 2828 wrote to memory of 2628	2828	kavhbnrj.exe	43
PID 2828 wrote to memory of 2628	2828	kavhbnrj.exe	43
PID 2828 wrote to memory of 2628	2828	kavhbnrj.exe	43
PID 2828 wrote to memory of 2628	2828	kavhbnrj.exe	43
PID 2828 wrote to memory of 2628	2828	kavhbnrj.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2388
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\txaihyko\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2552
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kavhbnrj.exe" C:\Windows\SysWOW64\txaihyko\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2028
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create txaihyko binPath= "C:\Windows\SysWOW64\txaihyko\kavhbnrj.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:352
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description txaihyko "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2040
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start txaihyko
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2740
- 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:2900

C:\Windows\SysWOW64\txaihyko\kavhbnrj.exe
C:\Windows\SysWOW64\txaihyko\kavhbnrj.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2828
- 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:2628

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\kavhbnrj.exe

Filesize
13.0MB

MD5
4cb0efbb951850908315e087669508e0

SHA1
5dedebc252936651374a466a13476d01f006a2e9

SHA256
e1a2c03c2f3d24dcf11e30af6ab60fad57e2611827cba9c683f055b3f244bf8e

SHA512
c79ac395ff22600d603d76a8a1216d7f8894606324dbfd121ec94ff4d038c051980b8d033ed36383f2a926c840b43943ef0cc48443e69096857fc6f756161308

Download Submit
memory/2388-8-0x0000000000400000-0x0000000002B8F000-memory.dmp

Filesize
39.6MB

Download
memory/2388-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2388-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2388-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2388-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2388-1-0x0000000002CB0000-0x0000000002DB0000-memory.dmp

Filesize
1024KB

Download
memory/2628-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2628-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2628-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2628-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2628-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2828-15-0x0000000000400000-0x0000000002B8F000-memory.dmp

Filesize
39.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads