tofsee | ebbca0fdcdd18ed934b57f0201a437b3ff88b9701027e5e96502cc67e34eb1ea

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
24-12-2024 14:50

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General

Target

JaffaCakes118_ebbca0fdcdd18ed934b57f0201a437b3ff88b9701027e5e96502cc67e34eb1ea.exe
Size

12.3MB
MD5

36690b9a25ec3a105f7cceb9aef63723
SHA1

e1e9364f44edd11f9f5201f52e5d99510b05265e
SHA256

ebbca0fdcdd18ed934b57f0201a437b3ff88b9701027e5e96502cc67e34eb1ea
SHA512

d6b0f3935e12bed38f4a74c7db1742bd0a0dcd2147bf08473d05e3815f91e0b39ab9034539bc1171352cc0e2ff9d8bf59c0b2f178a754e889328c7021a18c538
SSDEEP

12288:h681A/PjFDOddddddddddddddddddddddddddddddddddddddddddddddddddddd:hRGP

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

quadoil.ru

lakeflex.ru

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\ophyzcaf = "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
3056	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\ophyzcaf\ImagePath = "C:\\Windows\\SysWOW64\\ophyzcaf\\zirznfnw.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2592	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2728	zirznfnw.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2728 set thread context of 2592	2728	zirznfnw.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2568	sc.exe
2700	sc.exe
2832	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_ebbca0fdcdd18ed934b57f0201a437b3ff88b9701027e5e96502cc67e34eb1ea.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	zirznfnw.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2400 wrote to memory of 2752	2400	JaffaCakes118_ebbca0fdcdd18ed934b57f0201a437b3ff88b9701027e5e96502cc67e34eb1ea.exe	30
PID 2400 wrote to memory of 2752	2400	JaffaCakes118_ebbca0fdcdd18ed934b57f0201a437b3ff88b9701027e5e96502cc67e34eb1ea.exe	30
PID 2400 wrote to memory of 2752	2400	JaffaCakes118_ebbca0fdcdd18ed934b57f0201a437b3ff88b9701027e5e96502cc67e34eb1ea.exe	30
PID 2400 wrote to memory of 2752	2400	JaffaCakes118_ebbca0fdcdd18ed934b57f0201a437b3ff88b9701027e5e96502cc67e34eb1ea.exe	30
PID 2400 wrote to memory of 2804	2400	JaffaCakes118_ebbca0fdcdd18ed934b57f0201a437b3ff88b9701027e5e96502cc67e34eb1ea.exe	32
PID 2400 wrote to memory of 2804	2400	JaffaCakes118_ebbca0fdcdd18ed934b57f0201a437b3ff88b9701027e5e96502cc67e34eb1ea.exe	32
PID 2400 wrote to memory of 2804	2400	JaffaCakes118_ebbca0fdcdd18ed934b57f0201a437b3ff88b9701027e5e96502cc67e34eb1ea.exe	32
PID 2400 wrote to memory of 2804	2400	JaffaCakes118_ebbca0fdcdd18ed934b57f0201a437b3ff88b9701027e5e96502cc67e34eb1ea.exe	32
PID 2400 wrote to memory of 2700	2400	JaffaCakes118_ebbca0fdcdd18ed934b57f0201a437b3ff88b9701027e5e96502cc67e34eb1ea.exe	34
PID 2400 wrote to memory of 2700	2400	JaffaCakes118_ebbca0fdcdd18ed934b57f0201a437b3ff88b9701027e5e96502cc67e34eb1ea.exe	34
PID 2400 wrote to memory of 2700	2400	JaffaCakes118_ebbca0fdcdd18ed934b57f0201a437b3ff88b9701027e5e96502cc67e34eb1ea.exe	34
PID 2400 wrote to memory of 2700	2400	JaffaCakes118_ebbca0fdcdd18ed934b57f0201a437b3ff88b9701027e5e96502cc67e34eb1ea.exe	34
PID 2400 wrote to memory of 2832	2400	JaffaCakes118_ebbca0fdcdd18ed934b57f0201a437b3ff88b9701027e5e96502cc67e34eb1ea.exe	36
PID 2400 wrote to memory of 2832	2400	JaffaCakes118_ebbca0fdcdd18ed934b57f0201a437b3ff88b9701027e5e96502cc67e34eb1ea.exe	36
PID 2400 wrote to memory of 2832	2400	JaffaCakes118_ebbca0fdcdd18ed934b57f0201a437b3ff88b9701027e5e96502cc67e34eb1ea.exe	36
PID 2400 wrote to memory of 2832	2400	JaffaCakes118_ebbca0fdcdd18ed934b57f0201a437b3ff88b9701027e5e96502cc67e34eb1ea.exe	36
PID 2400 wrote to memory of 2568	2400	JaffaCakes118_ebbca0fdcdd18ed934b57f0201a437b3ff88b9701027e5e96502cc67e34eb1ea.exe	38
PID 2400 wrote to memory of 2568	2400	JaffaCakes118_ebbca0fdcdd18ed934b57f0201a437b3ff88b9701027e5e96502cc67e34eb1ea.exe	38
PID 2400 wrote to memory of 2568	2400	JaffaCakes118_ebbca0fdcdd18ed934b57f0201a437b3ff88b9701027e5e96502cc67e34eb1ea.exe	38
PID 2400 wrote to memory of 2568	2400	JaffaCakes118_ebbca0fdcdd18ed934b57f0201a437b3ff88b9701027e5e96502cc67e34eb1ea.exe	38
PID 2728 wrote to memory of 2592	2728	zirznfnw.exe	41
PID 2728 wrote to memory of 2592	2728	zirznfnw.exe	41
PID 2728 wrote to memory of 2592	2728	zirznfnw.exe	41
PID 2728 wrote to memory of 2592	2728	zirznfnw.exe	41
PID 2728 wrote to memory of 2592	2728	zirznfnw.exe	41
PID 2728 wrote to memory of 2592	2728	zirznfnw.exe	41
PID 2400 wrote to memory of 3056	2400	JaffaCakes118_ebbca0fdcdd18ed934b57f0201a437b3ff88b9701027e5e96502cc67e34eb1ea.exe	42
PID 2400 wrote to memory of 3056	2400	JaffaCakes118_ebbca0fdcdd18ed934b57f0201a437b3ff88b9701027e5e96502cc67e34eb1ea.exe	42
PID 2400 wrote to memory of 3056	2400	JaffaCakes118_ebbca0fdcdd18ed934b57f0201a437b3ff88b9701027e5e96502cc67e34eb1ea.exe	42
PID 2400 wrote to memory of 3056	2400	JaffaCakes118_ebbca0fdcdd18ed934b57f0201a437b3ff88b9701027e5e96502cc67e34eb1ea.exe	42

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ebbca0fdcdd18ed934b57f0201a437b3ff88b9701027e5e96502cc67e34eb1ea.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ebbca0fdcdd18ed934b57f0201a437b3ff88b9701027e5e96502cc67e34eb1ea.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2400
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ophyzcaf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2752
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zirznfnw.exe" C:\Windows\SysWOW64\ophyzcaf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2804
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ophyzcaf binPath= "C:\Windows\SysWOW64\ophyzcaf\zirznfnw.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ebbca0fdcdd18ed934b57f0201a437b3ff88b9701027e5e96502cc67e34eb1ea.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2700
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ophyzcaf "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2832
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ophyzcaf
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2568
- 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:3056

C:\Windows\SysWOW64\ophyzcaf\zirznfnw.exe
C:\Windows\SysWOW64\ophyzcaf\zirznfnw.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ebbca0fdcdd18ed934b57f0201a437b3ff88b9701027e5e96502cc67e34eb1ea.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2728
- 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:2592

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\zirznfnw.exe

Filesize
11.9MB

MD5
97d0dc3f755a58158a015dbb39282ba5

SHA1
675a736d14e2569f24506e6059140a5d00407d67

SHA256
5e2fb9562ee2bf36a8134a1d6b69ed1956cf262696956420e685c1abad5ddc56

SHA512
fba50ad5a33f233e4eecaff05286fe5186beea5b2eb2151c1472561cd2d70dc8abf7fa97710eca48712efed4db7030ab7b1fe72fd02470bfa5076891ce755f61

Download Submit
memory/2400-14-0x00000000003C0000-0x00000000003D3000-memory.dmp

Filesize
76KB

Download
memory/2400-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2400-1-0x00000000003C0000-0x00000000003D3000-memory.dmp

Filesize
76KB

Download
memory/2400-15-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2400-0-0x00000000001B0000-0x00000000001BD000-memory.dmp

Filesize
52KB

Download
memory/2400-13-0x00000000001B0000-0x00000000001BD000-memory.dmp

Filesize
52KB

Download
memory/2400-12-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2592-6-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2592-9-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2592-8-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2592-16-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2592-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2728-11-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads