tofsee | 1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036

Analysis

max time kernel
147s
max time network
146s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
24-12-2024 13:21

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General

Target

JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe
Size

305KB
MD5

3cc97570660f299ac6bfd71c41161d14
SHA1

261cd155b045aa2aa7859839d2225e5fc85862c4
SHA256

1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036
SHA512

f327fde63260752f8e69a6c2b0b775c829618165f6f088fbb9ecddc7f03df4804c0949c4f9d9f35b1cbeec0e32c9572eee017c86b3cf0814f85972cd05f46787
SSDEEP

6144:eSLXimqL97bFsmSqhxg+EApS/irarL6MCOhxxFeTr/ekI:ecXuJ7bimSI80WL6+zxF6L

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\jrxhzjdf = "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
2584	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\jrxhzjdf\ImagePath = "C:\\Windows\\SysWOW64\\jrxhzjdf\\cjvirefz.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2452	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2564	cjvirefz.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2564 set thread context of 2452	2564	cjvirefz.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2852	sc.exe
2092	sc.exe
2612	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cjvirefz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.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

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2708 wrote to memory of 2716	2708	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	30
PID 2708 wrote to memory of 2716	2708	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	30
PID 2708 wrote to memory of 2716	2708	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	30
PID 2708 wrote to memory of 2716	2708	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	30
PID 2708 wrote to memory of 2876	2708	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	32
PID 2708 wrote to memory of 2876	2708	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	32
PID 2708 wrote to memory of 2876	2708	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	32
PID 2708 wrote to memory of 2876	2708	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	32
PID 2708 wrote to memory of 2852	2708	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	34
PID 2708 wrote to memory of 2852	2708	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	34
PID 2708 wrote to memory of 2852	2708	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	34
PID 2708 wrote to memory of 2852	2708	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	34
PID 2708 wrote to memory of 2092	2708	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	36
PID 2708 wrote to memory of 2092	2708	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	36
PID 2708 wrote to memory of 2092	2708	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	36
PID 2708 wrote to memory of 2092	2708	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	36
PID 2708 wrote to memory of 2612	2708	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	38
PID 2708 wrote to memory of 2612	2708	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	38
PID 2708 wrote to memory of 2612	2708	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	38
PID 2708 wrote to memory of 2612	2708	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	38
PID 2708 wrote to memory of 2584	2708	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	41
PID 2708 wrote to memory of 2584	2708	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	41
PID 2708 wrote to memory of 2584	2708	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	41
PID 2708 wrote to memory of 2584	2708	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	41
PID 2564 wrote to memory of 2452	2564	cjvirefz.exe	43
PID 2564 wrote to memory of 2452	2564	cjvirefz.exe	43
PID 2564 wrote to memory of 2452	2564	cjvirefz.exe	43
PID 2564 wrote to memory of 2452	2564	cjvirefz.exe	43
PID 2564 wrote to memory of 2452	2564	cjvirefz.exe	43
PID 2564 wrote to memory of 2452	2564	cjvirefz.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2708
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jrxhzjdf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2716
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cjvirefz.exe" C:\Windows\SysWOW64\jrxhzjdf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2876
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create jrxhzjdf binPath= "C:\Windows\SysWOW64\jrxhzjdf\cjvirefz.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2852
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description jrxhzjdf "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2092
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start jrxhzjdf
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2612
- 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:2584

C:\Windows\SysWOW64\jrxhzjdf\cjvirefz.exe
C:\Windows\SysWOW64\jrxhzjdf\cjvirefz.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2564
- 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:2452

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\cjvirefz.exe

Filesize
10.9MB

MD5
4c50c53c1e680a8682656d33b17884fe

SHA1
5637ff8f67828e606587a7d1671ad5cf33b2e67e

SHA256
1dd7bb2f648579be98eed7cc15a072ca57ef07dff29b1f7ff867751bb2d804e2

SHA512
d1432c0b13973dfc9e2fbb6e0a4e672998e0eafa67299927307655d176080af06ceca9dd8611d9ae417dc8d92431f76483951892972db7801101e814b13f9ccc

Download Submit
memory/2452-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2452-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2452-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2452-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2452-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2564-17-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/2708-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2708-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2708-8-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/2708-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2708-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2708-1-0x0000000000520000-0x0000000000620000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads