tofsee | 33ae3cdc14b1a9a867f8661f62300315ed1e22c0e8a39184644d956ac515eb06

Analysis

max time kernel
146s
max time network
147s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
20-10-2024 21:36

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General

Target

6430115b4cd6b2e378cf43c17fe9b6e6_JaffaCakes118.exe
Size

13.3MB
MD5

6430115b4cd6b2e378cf43c17fe9b6e6
SHA1

4ee39f04cf513136d12ee205203d6fa2574e5e97
SHA256

33ae3cdc14b1a9a867f8661f62300315ed1e22c0e8a39184644d956ac515eb06
SHA512

1e2764a04d72d1f52d72b18ead17107476cd5986bf68be6fcd2cb21855cee6690526bf97eb7e6a3dc56238e252b7f4f38818578e631b2953f5b02b2725b1e5b5
SSDEEP

393216:prrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrn:

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

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\ykfgimds = "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
2760	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\ykfgimds\ImagePath = "C:\\Windows\\SysWOW64\\ykfgimds\\elxktghb.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2176	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2352	elxktghb.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2352 set thread context of 2176	2352	elxktghb.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2816	sc.exe
2316	sc.exe
2940	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	6430115b4cd6b2e378cf43c17fe9b6e6_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	elxktghb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1960 wrote to memory of 2128	1960	6430115b4cd6b2e378cf43c17fe9b6e6_JaffaCakes118.exe	30
PID 1960 wrote to memory of 2128	1960	6430115b4cd6b2e378cf43c17fe9b6e6_JaffaCakes118.exe	30
PID 1960 wrote to memory of 2128	1960	6430115b4cd6b2e378cf43c17fe9b6e6_JaffaCakes118.exe	30
PID 1960 wrote to memory of 2128	1960	6430115b4cd6b2e378cf43c17fe9b6e6_JaffaCakes118.exe	30
PID 1960 wrote to memory of 2072	1960	6430115b4cd6b2e378cf43c17fe9b6e6_JaffaCakes118.exe	32
PID 1960 wrote to memory of 2072	1960	6430115b4cd6b2e378cf43c17fe9b6e6_JaffaCakes118.exe	32
PID 1960 wrote to memory of 2072	1960	6430115b4cd6b2e378cf43c17fe9b6e6_JaffaCakes118.exe	32
PID 1960 wrote to memory of 2072	1960	6430115b4cd6b2e378cf43c17fe9b6e6_JaffaCakes118.exe	32
PID 1960 wrote to memory of 2816	1960	6430115b4cd6b2e378cf43c17fe9b6e6_JaffaCakes118.exe	34
PID 1960 wrote to memory of 2816	1960	6430115b4cd6b2e378cf43c17fe9b6e6_JaffaCakes118.exe	34
PID 1960 wrote to memory of 2816	1960	6430115b4cd6b2e378cf43c17fe9b6e6_JaffaCakes118.exe	34
PID 1960 wrote to memory of 2816	1960	6430115b4cd6b2e378cf43c17fe9b6e6_JaffaCakes118.exe	34
PID 1960 wrote to memory of 2316	1960	6430115b4cd6b2e378cf43c17fe9b6e6_JaffaCakes118.exe	36
PID 1960 wrote to memory of 2316	1960	6430115b4cd6b2e378cf43c17fe9b6e6_JaffaCakes118.exe	36
PID 1960 wrote to memory of 2316	1960	6430115b4cd6b2e378cf43c17fe9b6e6_JaffaCakes118.exe	36
PID 1960 wrote to memory of 2316	1960	6430115b4cd6b2e378cf43c17fe9b6e6_JaffaCakes118.exe	36
PID 1960 wrote to memory of 2940	1960	6430115b4cd6b2e378cf43c17fe9b6e6_JaffaCakes118.exe	38
PID 1960 wrote to memory of 2940	1960	6430115b4cd6b2e378cf43c17fe9b6e6_JaffaCakes118.exe	38
PID 1960 wrote to memory of 2940	1960	6430115b4cd6b2e378cf43c17fe9b6e6_JaffaCakes118.exe	38
PID 1960 wrote to memory of 2940	1960	6430115b4cd6b2e378cf43c17fe9b6e6_JaffaCakes118.exe	38
PID 1960 wrote to memory of 2760	1960	6430115b4cd6b2e378cf43c17fe9b6e6_JaffaCakes118.exe	41
PID 1960 wrote to memory of 2760	1960	6430115b4cd6b2e378cf43c17fe9b6e6_JaffaCakes118.exe	41
PID 1960 wrote to memory of 2760	1960	6430115b4cd6b2e378cf43c17fe9b6e6_JaffaCakes118.exe	41
PID 1960 wrote to memory of 2760	1960	6430115b4cd6b2e378cf43c17fe9b6e6_JaffaCakes118.exe	41
PID 2352 wrote to memory of 2176	2352	elxktghb.exe	43
PID 2352 wrote to memory of 2176	2352	elxktghb.exe	43
PID 2352 wrote to memory of 2176	2352	elxktghb.exe	43
PID 2352 wrote to memory of 2176	2352	elxktghb.exe	43
PID 2352 wrote to memory of 2176	2352	elxktghb.exe	43
PID 2352 wrote to memory of 2176	2352	elxktghb.exe	43

C:\Users\Admin\AppData\Local\Temp\6430115b4cd6b2e378cf43c17fe9b6e6_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\6430115b4cd6b2e378cf43c17fe9b6e6_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1960
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ykfgimds\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2128
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\elxktghb.exe" C:\Windows\SysWOW64\ykfgimds\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2072
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ykfgimds binPath= "C:\Windows\SysWOW64\ykfgimds\elxktghb.exe /d\"C:\Users\Admin\AppData\Local\Temp\6430115b4cd6b2e378cf43c17fe9b6e6_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2816
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ykfgimds "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2316
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ykfgimds
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2940
- 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:2760

C:\Windows\SysWOW64\ykfgimds\elxktghb.exe
C:\Windows\SysWOW64\ykfgimds\elxktghb.exe /d"C:\Users\Admin\AppData\Local\Temp\6430115b4cd6b2e378cf43c17fe9b6e6_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2352
- 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:2176

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\elxktghb.exe

Filesize
10.6MB

MD5
8c02b2b2c4e9e1b9e34ce3e5506f4271

SHA1
99a08624a1e1e555da5b9b9e5d4f761633150525

SHA256
a084246d467b542a5cf0963fbe9bcd9606de9c23b9bf7799b8faaf8f27950b17

SHA512
4c2ab634df231fcc777f8c0a6ca020aac0e2f4da2b344f27b64e05f6273d64408993c7e61e9c19eda9ec07dd085b4fc917668a4d6eef7e4e3a9cf1d7066700c8

Download Submit
memory/1960-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1960-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1960-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1960-8-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/1960-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1960-1-0x0000000000570000-0x0000000000670000-memory.dmp

Filesize
1024KB

Download
memory/2176-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2176-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2176-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2176-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2176-16-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2176-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2352-15-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads