tofsee | 077a1737b7a3a1caccbb5adfc25ae2f2b7615c3defdd0153c2831eb5066706fa

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
17/08/2024, 01:59

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General

Target
a0cb05ab32622f45bbd9957e5eb52be2_JaffaCakes118.exe
Size 14.3MB
Sample240817-cehtbstgrr
SHA256 077a1737b7a3a1caccbb5adfc25ae2f2b7615c3defdd0153c2831eb5066706fa
MD5 a0cb05ab32622f45bbd9957e5eb52be2
SHA1 1fe92a35cb439eb0f3d17f1a89b5d9a7c600049b
SHA512 7c645c72ab06e876c88907db3ea5a92cdeb0161103ed0ffbca4b7894a1be18451ccf368553fdedabecfc05c1c3acd24194629242fdae5f21b2ae94e1dc28c0ff
SSDEEP 393216:K88888888888888888888888888888888888888888888888888888888888888U:
MD5 SHA1 SHA512 SSDEEP

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\mnioicfk = "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
2800	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\mnioicfk\ImagePath = "C:\\Windows\\SysWOW64\\mnioicfk\\vtdbbraq.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2368	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2652	vtdbbraq.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2652 set thread context of 2368	2652	vtdbbraq.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2684	sc.exe
2756	sc.exe
2696	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	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	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	vtdbbraq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a0cb05ab32622f45bbd9957e5eb52be2_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2624 wrote to memory of 2288	2624	a0cb05ab32622f45bbd9957e5eb52be2_JaffaCakes118.exe	31
PID 2624 wrote to memory of 2288	2624	a0cb05ab32622f45bbd9957e5eb52be2_JaffaCakes118.exe	31
PID 2624 wrote to memory of 2288	2624	a0cb05ab32622f45bbd9957e5eb52be2_JaffaCakes118.exe	31
PID 2624 wrote to memory of 2288	2624	a0cb05ab32622f45bbd9957e5eb52be2_JaffaCakes118.exe	31
PID 2624 wrote to memory of 384	2624	a0cb05ab32622f45bbd9957e5eb52be2_JaffaCakes118.exe	33
PID 2624 wrote to memory of 384	2624	a0cb05ab32622f45bbd9957e5eb52be2_JaffaCakes118.exe	33
PID 2624 wrote to memory of 384	2624	a0cb05ab32622f45bbd9957e5eb52be2_JaffaCakes118.exe	33
PID 2624 wrote to memory of 384	2624	a0cb05ab32622f45bbd9957e5eb52be2_JaffaCakes118.exe	33
PID 2624 wrote to memory of 2684	2624	a0cb05ab32622f45bbd9957e5eb52be2_JaffaCakes118.exe	35
PID 2624 wrote to memory of 2684	2624	a0cb05ab32622f45bbd9957e5eb52be2_JaffaCakes118.exe	35
PID 2624 wrote to memory of 2684	2624	a0cb05ab32622f45bbd9957e5eb52be2_JaffaCakes118.exe	35
PID 2624 wrote to memory of 2684	2624	a0cb05ab32622f45bbd9957e5eb52be2_JaffaCakes118.exe	35
PID 2624 wrote to memory of 2756	2624	a0cb05ab32622f45bbd9957e5eb52be2_JaffaCakes118.exe	37
PID 2624 wrote to memory of 2756	2624	a0cb05ab32622f45bbd9957e5eb52be2_JaffaCakes118.exe	37
PID 2624 wrote to memory of 2756	2624	a0cb05ab32622f45bbd9957e5eb52be2_JaffaCakes118.exe	37
PID 2624 wrote to memory of 2756	2624	a0cb05ab32622f45bbd9957e5eb52be2_JaffaCakes118.exe	37
PID 2624 wrote to memory of 2696	2624	a0cb05ab32622f45bbd9957e5eb52be2_JaffaCakes118.exe	39
PID 2624 wrote to memory of 2696	2624	a0cb05ab32622f45bbd9957e5eb52be2_JaffaCakes118.exe	39
PID 2624 wrote to memory of 2696	2624	a0cb05ab32622f45bbd9957e5eb52be2_JaffaCakes118.exe	39
PID 2624 wrote to memory of 2696	2624	a0cb05ab32622f45bbd9957e5eb52be2_JaffaCakes118.exe	39
PID 2624 wrote to memory of 2800	2624	a0cb05ab32622f45bbd9957e5eb52be2_JaffaCakes118.exe	42
PID 2624 wrote to memory of 2800	2624	a0cb05ab32622f45bbd9957e5eb52be2_JaffaCakes118.exe	42
PID 2624 wrote to memory of 2800	2624	a0cb05ab32622f45bbd9957e5eb52be2_JaffaCakes118.exe	42
PID 2624 wrote to memory of 2800	2624	a0cb05ab32622f45bbd9957e5eb52be2_JaffaCakes118.exe	42
PID 2652 wrote to memory of 2368	2652	vtdbbraq.exe	44
PID 2652 wrote to memory of 2368	2652	vtdbbraq.exe	44
PID 2652 wrote to memory of 2368	2652	vtdbbraq.exe	44
PID 2652 wrote to memory of 2368	2652	vtdbbraq.exe	44
PID 2652 wrote to memory of 2368	2652	vtdbbraq.exe	44
PID 2652 wrote to memory of 2368	2652	vtdbbraq.exe	44

C:\Users\Admin\AppData\Local\Temp\a0cb05ab32622f45bbd9957e5eb52be2_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a0cb05ab32622f45bbd9957e5eb52be2_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2624
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mnioicfk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2288
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vtdbbraq.exe" C:\Windows\SysWOW64\mnioicfk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:384
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mnioicfk binPath= "C:\Windows\SysWOW64\mnioicfk\vtdbbraq.exe /d\"C:\Users\Admin\AppData\Local\Temp\a0cb05ab32622f45bbd9957e5eb52be2_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2684
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mnioicfk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2756
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mnioicfk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2696
- 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:2800

C:\Windows\SysWOW64\mnioicfk\vtdbbraq.exe
C:\Windows\SysWOW64\mnioicfk\vtdbbraq.exe /d"C:\Users\Admin\AppData\Local\Temp\a0cb05ab32622f45bbd9957e5eb52be2_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2652
- 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:2368

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

vtdbbraq.exe

Path C:\Users\Admin\AppData\Local\Temp\vtdbbraq.exe
Size 10.4MB
SHA256 a994bbb22d0fa50b26a88df89778bd14d81229b6706452c16b0bbdae95746adf
MD5 f45df8251523a9a6dd9bb830025eedab
SHA1 3af3157038148aa4c5e51463af52d3b0475d18ba
SHA512 c1fa10cd07a514f9ea24be80723002636a5c9e185f33e07f2c62bfada715f86c23f85408c4f8d4989536d41c0695916d5306dd20b357269601c3262f34fc7aac
SSDEEP 196608:M+8888888888888888888888888888888888888888888888888888888888888o:p8888888888888888888888888888887
MD5 SHA1 SHA512 SSDEEP

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memory/2368-14-0x0000000000080000-0x0000000000095000-memory.dmp

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memory/2368-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

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memory/2368-11-0x0000000000080000-0x0000000000095000-memory.dmp

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memory/2368-17-0x0000000000080000-0x0000000000095000-memory.dmp

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memory/2368-18-0x0000000000080000-0x0000000000095000-memory.dmp

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memory/2624-3-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/2624-2-0x0000000000020000-0x0000000000033000-memory.dmp

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memory/2624-10-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/2624-9-0x0000000000020000-0x0000000000033000-memory.dmp

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memory/2624-8-0x0000000000400000-0x0000000000455000-memory.dmp

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memory/2624-1-0x00000000005D0000-0x00000000006D0000-memory.dmp

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memory/2652-16-0x0000000000400000-0x0000000000455000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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