tofsee | cef42e263e7f019309f54211a3631a6307227afd9a14b2be82594d71401e943e

Analysis

max time kernel
148s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22-12-2024 05:10

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General

Target

JaffaCakes118_cef42e263e7f019309f54211a3631a6307227afd9a14b2be82594d71401e943e.exe
Size

292KB
MD5

233cbf353673f230bc6ac3dfc4ba231b
SHA1

beb0d57cac314f0f6516cdc31e1e380982989450
SHA256

cef42e263e7f019309f54211a3631a6307227afd9a14b2be82594d71401e943e
SHA512

fb2494db2760b7381e0abaf7bc02660cd1780c57e0abf06ce6d21099c69109a3b4715fa87ab09c9293a82049b91a69318a6f8557b155c68bab2d3129a97b4418
SSDEEP

6144:7gDFgfRlILqtqILeleWxIlUMNYji6loYTet/S6s/:7sFel9txrGIlUMNYji6jmS6y

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\dsbrznfb = "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
2656	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\dsbrznfb\ImagePath = "C:\\Windows\\SysWOW64\\dsbrznfb\\iojmveez.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2552	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2732	iojmveez.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2732 set thread context of 2552	2732	iojmveez.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2372	sc.exe
2188	sc.exe
2676	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\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	iojmveez.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_cef42e263e7f019309f54211a3631a6307227afd9a14b2be82594d71401e943e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2616 wrote to memory of 2084	2616	JaffaCakes118_cef42e263e7f019309f54211a3631a6307227afd9a14b2be82594d71401e943e.exe	31
PID 2616 wrote to memory of 2084	2616	JaffaCakes118_cef42e263e7f019309f54211a3631a6307227afd9a14b2be82594d71401e943e.exe	31
PID 2616 wrote to memory of 2084	2616	JaffaCakes118_cef42e263e7f019309f54211a3631a6307227afd9a14b2be82594d71401e943e.exe	31
PID 2616 wrote to memory of 2084	2616	JaffaCakes118_cef42e263e7f019309f54211a3631a6307227afd9a14b2be82594d71401e943e.exe	31
PID 2616 wrote to memory of 2460	2616	JaffaCakes118_cef42e263e7f019309f54211a3631a6307227afd9a14b2be82594d71401e943e.exe	33
PID 2616 wrote to memory of 2460	2616	JaffaCakes118_cef42e263e7f019309f54211a3631a6307227afd9a14b2be82594d71401e943e.exe	33
PID 2616 wrote to memory of 2460	2616	JaffaCakes118_cef42e263e7f019309f54211a3631a6307227afd9a14b2be82594d71401e943e.exe	33
PID 2616 wrote to memory of 2460	2616	JaffaCakes118_cef42e263e7f019309f54211a3631a6307227afd9a14b2be82594d71401e943e.exe	33
PID 2616 wrote to memory of 2188	2616	JaffaCakes118_cef42e263e7f019309f54211a3631a6307227afd9a14b2be82594d71401e943e.exe	35
PID 2616 wrote to memory of 2188	2616	JaffaCakes118_cef42e263e7f019309f54211a3631a6307227afd9a14b2be82594d71401e943e.exe	35
PID 2616 wrote to memory of 2188	2616	JaffaCakes118_cef42e263e7f019309f54211a3631a6307227afd9a14b2be82594d71401e943e.exe	35
PID 2616 wrote to memory of 2188	2616	JaffaCakes118_cef42e263e7f019309f54211a3631a6307227afd9a14b2be82594d71401e943e.exe	35
PID 2616 wrote to memory of 2676	2616	JaffaCakes118_cef42e263e7f019309f54211a3631a6307227afd9a14b2be82594d71401e943e.exe	37
PID 2616 wrote to memory of 2676	2616	JaffaCakes118_cef42e263e7f019309f54211a3631a6307227afd9a14b2be82594d71401e943e.exe	37
PID 2616 wrote to memory of 2676	2616	JaffaCakes118_cef42e263e7f019309f54211a3631a6307227afd9a14b2be82594d71401e943e.exe	37
PID 2616 wrote to memory of 2676	2616	JaffaCakes118_cef42e263e7f019309f54211a3631a6307227afd9a14b2be82594d71401e943e.exe	37
PID 2616 wrote to memory of 2372	2616	JaffaCakes118_cef42e263e7f019309f54211a3631a6307227afd9a14b2be82594d71401e943e.exe	39
PID 2616 wrote to memory of 2372	2616	JaffaCakes118_cef42e263e7f019309f54211a3631a6307227afd9a14b2be82594d71401e943e.exe	39
PID 2616 wrote to memory of 2372	2616	JaffaCakes118_cef42e263e7f019309f54211a3631a6307227afd9a14b2be82594d71401e943e.exe	39
PID 2616 wrote to memory of 2372	2616	JaffaCakes118_cef42e263e7f019309f54211a3631a6307227afd9a14b2be82594d71401e943e.exe	39
PID 2616 wrote to memory of 2656	2616	JaffaCakes118_cef42e263e7f019309f54211a3631a6307227afd9a14b2be82594d71401e943e.exe	42
PID 2616 wrote to memory of 2656	2616	JaffaCakes118_cef42e263e7f019309f54211a3631a6307227afd9a14b2be82594d71401e943e.exe	42
PID 2616 wrote to memory of 2656	2616	JaffaCakes118_cef42e263e7f019309f54211a3631a6307227afd9a14b2be82594d71401e943e.exe	42
PID 2616 wrote to memory of 2656	2616	JaffaCakes118_cef42e263e7f019309f54211a3631a6307227afd9a14b2be82594d71401e943e.exe	42
PID 2732 wrote to memory of 2552	2732	iojmveez.exe	44
PID 2732 wrote to memory of 2552	2732	iojmveez.exe	44
PID 2732 wrote to memory of 2552	2732	iojmveez.exe	44
PID 2732 wrote to memory of 2552	2732	iojmveez.exe	44
PID 2732 wrote to memory of 2552	2732	iojmveez.exe	44
PID 2732 wrote to memory of 2552	2732	iojmveez.exe	44

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cef42e263e7f019309f54211a3631a6307227afd9a14b2be82594d71401e943e.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cef42e263e7f019309f54211a3631a6307227afd9a14b2be82594d71401e943e.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2616
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dsbrznfb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2084
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\iojmveez.exe" C:\Windows\SysWOW64\dsbrznfb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2460
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create dsbrznfb binPath= "C:\Windows\SysWOW64\dsbrznfb\iojmveez.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cef42e263e7f019309f54211a3631a6307227afd9a14b2be82594d71401e943e.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2188
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description dsbrznfb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2676
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start dsbrznfb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2372
- 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:2656

C:\Windows\SysWOW64\dsbrznfb\iojmveez.exe
C:\Windows\SysWOW64\dsbrznfb\iojmveez.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cef42e263e7f019309f54211a3631a6307227afd9a14b2be82594d71401e943e.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2732
- 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:2552

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\iojmveez.exe

Filesize
13.5MB

MD5
c16d5e0bfc5d3342e9f0ccd95130ab91

SHA1
8bd262fca20fb22b6ba50dcefea908806d8e59c9

SHA256
49f94af3622ffbd686301fb3e22857b4c62d2a40688e5932765e21ede7dcdc44

SHA512
f494c26150816fc73f7951faaa1e02b1615c315b780d6b1a7b71096866a69297733630f0e24d7243f86e679606dffe483654465432db7371821eecda1c0df604

Download Submit
memory/2552-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2552-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2552-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2552-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2552-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2616-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2616-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2616-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2616-8-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2616-7-0x0000000000400000-0x00000000008ED000-memory.dmp

Filesize
4.9MB

Download
memory/2616-1-0x0000000000A20000-0x0000000000B20000-memory.dmp

Filesize
1024KB

Download
memory/2732-15-0x0000000000400000-0x00000000008ED000-memory.dmp

Filesize
4.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads