tofsee | a419803389ae5a08a562449126908d43d14ddff789d13950b3f793051b1a6ef7

Analysis

max time kernel
144s
max time network
119s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
18-10-2024 10:50

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General

Target

5706f7eb6c5294e58aaa331b43cd5dd3_JaffaCakes118.exe
Size

10.2MB
MD5

5706f7eb6c5294e58aaa331b43cd5dd3
SHA1

df373d30332a8244f80074284617aaa7444404d4
SHA256

a419803389ae5a08a562449126908d43d14ddff789d13950b3f793051b1a6ef7
SHA512

030b41f592de764eec4031917054986d49e574956ceb1ee40cfda9013f94e06bd7c17df5b9b453167d7b116f72fa89d270c92aa96ee3be7c138a0221acbeb04d
SSDEEP

6144:eJu3szifRNFyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyP:suHf7

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

43.231.4.7

lazystax.ru

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\kezobfxd = "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
2936	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\kezobfxd\ImagePath = "C:\\Windows\\SysWOW64\\kezobfxd\\feuqxty.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2832	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2956	feuqxty.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2956 set thread context of 2832	2956	feuqxty.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2172	sc.exe
2504	sc.exe
2836	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	feuqxty.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5706f7eb6c5294e58aaa331b43cd5dd3_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1944 wrote to memory of 2640	1944	5706f7eb6c5294e58aaa331b43cd5dd3_JaffaCakes118.exe	30
PID 1944 wrote to memory of 2640	1944	5706f7eb6c5294e58aaa331b43cd5dd3_JaffaCakes118.exe	30
PID 1944 wrote to memory of 2640	1944	5706f7eb6c5294e58aaa331b43cd5dd3_JaffaCakes118.exe	30
PID 1944 wrote to memory of 2640	1944	5706f7eb6c5294e58aaa331b43cd5dd3_JaffaCakes118.exe	30
PID 1944 wrote to memory of 1536	1944	5706f7eb6c5294e58aaa331b43cd5dd3_JaffaCakes118.exe	32
PID 1944 wrote to memory of 1536	1944	5706f7eb6c5294e58aaa331b43cd5dd3_JaffaCakes118.exe	32
PID 1944 wrote to memory of 1536	1944	5706f7eb6c5294e58aaa331b43cd5dd3_JaffaCakes118.exe	32
PID 1944 wrote to memory of 1536	1944	5706f7eb6c5294e58aaa331b43cd5dd3_JaffaCakes118.exe	32
PID 1944 wrote to memory of 2172	1944	5706f7eb6c5294e58aaa331b43cd5dd3_JaffaCakes118.exe	34
PID 1944 wrote to memory of 2172	1944	5706f7eb6c5294e58aaa331b43cd5dd3_JaffaCakes118.exe	34
PID 1944 wrote to memory of 2172	1944	5706f7eb6c5294e58aaa331b43cd5dd3_JaffaCakes118.exe	34
PID 1944 wrote to memory of 2172	1944	5706f7eb6c5294e58aaa331b43cd5dd3_JaffaCakes118.exe	34
PID 1944 wrote to memory of 2504	1944	5706f7eb6c5294e58aaa331b43cd5dd3_JaffaCakes118.exe	36
PID 1944 wrote to memory of 2504	1944	5706f7eb6c5294e58aaa331b43cd5dd3_JaffaCakes118.exe	36
PID 1944 wrote to memory of 2504	1944	5706f7eb6c5294e58aaa331b43cd5dd3_JaffaCakes118.exe	36
PID 1944 wrote to memory of 2504	1944	5706f7eb6c5294e58aaa331b43cd5dd3_JaffaCakes118.exe	36
PID 1944 wrote to memory of 2836	1944	5706f7eb6c5294e58aaa331b43cd5dd3_JaffaCakes118.exe	38
PID 1944 wrote to memory of 2836	1944	5706f7eb6c5294e58aaa331b43cd5dd3_JaffaCakes118.exe	38
PID 1944 wrote to memory of 2836	1944	5706f7eb6c5294e58aaa331b43cd5dd3_JaffaCakes118.exe	38
PID 1944 wrote to memory of 2836	1944	5706f7eb6c5294e58aaa331b43cd5dd3_JaffaCakes118.exe	38
PID 2956 wrote to memory of 2832	2956	feuqxty.exe	41
PID 2956 wrote to memory of 2832	2956	feuqxty.exe	41
PID 2956 wrote to memory of 2832	2956	feuqxty.exe	41
PID 2956 wrote to memory of 2832	2956	feuqxty.exe	41
PID 2956 wrote to memory of 2832	2956	feuqxty.exe	41
PID 2956 wrote to memory of 2832	2956	feuqxty.exe	41
PID 1944 wrote to memory of 2936	1944	5706f7eb6c5294e58aaa331b43cd5dd3_JaffaCakes118.exe	42
PID 1944 wrote to memory of 2936	1944	5706f7eb6c5294e58aaa331b43cd5dd3_JaffaCakes118.exe	42
PID 1944 wrote to memory of 2936	1944	5706f7eb6c5294e58aaa331b43cd5dd3_JaffaCakes118.exe	42
PID 1944 wrote to memory of 2936	1944	5706f7eb6c5294e58aaa331b43cd5dd3_JaffaCakes118.exe	42

C:\Users\Admin\AppData\Local\Temp\5706f7eb6c5294e58aaa331b43cd5dd3_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\5706f7eb6c5294e58aaa331b43cd5dd3_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1944
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kezobfxd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2640
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\feuqxty.exe" C:\Windows\SysWOW64\kezobfxd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1536
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create kezobfxd binPath= "C:\Windows\SysWOW64\kezobfxd\feuqxty.exe /d\"C:\Users\Admin\AppData\Local\Temp\5706f7eb6c5294e58aaa331b43cd5dd3_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2172
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description kezobfxd "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2504
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start kezobfxd
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2836
- 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:2936

C:\Windows\SysWOW64\kezobfxd\feuqxty.exe
C:\Windows\SysWOW64\kezobfxd\feuqxty.exe /d"C:\Users\Admin\AppData\Local\Temp\5706f7eb6c5294e58aaa331b43cd5dd3_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2956
- 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:2832

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\feuqxty.exe

Filesize
10.4MB

MD5
51db46df92a09bd5367ce41ed01e25e1

SHA1
377f31c1d06a5c8a78a9c46606770b0ee767c169

SHA256
02baa9ef6c25dea33cc6b1052f67e83130e36eaf8711eb6ba47a1c2d3f3b7f5a

SHA512
afc7cd2c8df9a8bc4bed5f997a4fd6a344cbad6f510dea3119fc87aab54e716fe2bdb079071ca623a692f2112ea80a0a87928687f6bd98ca3b3ca099f5cb7a04

Download Submit
memory/1944-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1944-2-0x0000000000260000-0x0000000000261000-memory.dmp

Filesize
4KB

Download
memory/1944-1-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download
memory/1944-13-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2832-7-0x00000000000A0000-0x00000000000B5000-memory.dmp

Filesize
84KB

Download
memory/2832-10-0x00000000000A0000-0x00000000000B5000-memory.dmp

Filesize
84KB

Download
memory/2832-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2832-14-0x00000000000A0000-0x00000000000B5000-memory.dmp

Filesize
84KB

Download
memory/2832-15-0x00000000000A0000-0x00000000000B5000-memory.dmp

Filesize
84KB

Download
memory/2956-12-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads