tofsee | 88c517b3794e1eba582c7f65f417929aac425dfcbd4b4856fe30fbb7d10dda69

Analysis

max time kernel
145s
max time network
146s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03-11-2024 14:31

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General

Target

8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe
Size

13.1MB
MD5

8bf29e23ac410a61aa52ba419821c5d1
SHA1

cd8925a8e7be90c55a982bdb20dbbec7d6faae5d
SHA256

88c517b3794e1eba582c7f65f417929aac425dfcbd4b4856fe30fbb7d10dda69
SHA512

36a8039d962ec7375d8eb0f95fa20d38edb742e47aa9ee1232d25ed558ebc205dd211cc1ea277ee73330bc66460ea6babe2f8aba91e45aac0e2db5ff98e48ae9
SSDEEP

6144:crZQVnJzxj5nP76vk7wQ6udJm1lzvGCUWlnpj:QZ2zxj5nPmRQ6QgjzOCnl

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
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\pltnvtlk = "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
2216	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\pltnvtlk\ImagePath = "C:\\Windows\\SysWOW64\\pltnvtlk\\brrrgxdv.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
332	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2684	brrrgxdv.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2684 set thread context of 332	2684	brrrgxdv.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2956	sc.exe
2652	sc.exe
2620	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	sc.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	brrrgxdv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2764 wrote to memory of 2760	2764	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	30
PID 2764 wrote to memory of 2760	2764	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	30
PID 2764 wrote to memory of 2760	2764	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	30
PID 2764 wrote to memory of 2760	2764	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	30
PID 2764 wrote to memory of 3000	2764	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	32
PID 2764 wrote to memory of 3000	2764	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	32
PID 2764 wrote to memory of 3000	2764	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	32
PID 2764 wrote to memory of 3000	2764	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	32
PID 2764 wrote to memory of 2956	2764	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	34
PID 2764 wrote to memory of 2956	2764	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	34
PID 2764 wrote to memory of 2956	2764	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	34
PID 2764 wrote to memory of 2956	2764	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	34
PID 2764 wrote to memory of 2652	2764	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	36
PID 2764 wrote to memory of 2652	2764	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	36
PID 2764 wrote to memory of 2652	2764	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	36
PID 2764 wrote to memory of 2652	2764	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	36
PID 2764 wrote to memory of 2620	2764	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	38
PID 2764 wrote to memory of 2620	2764	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	38
PID 2764 wrote to memory of 2620	2764	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	38
PID 2764 wrote to memory of 2620	2764	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	38
PID 2764 wrote to memory of 2216	2764	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	41
PID 2764 wrote to memory of 2216	2764	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	41
PID 2764 wrote to memory of 2216	2764	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	41
PID 2764 wrote to memory of 2216	2764	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	41
PID 2684 wrote to memory of 332	2684	brrrgxdv.exe	43
PID 2684 wrote to memory of 332	2684	brrrgxdv.exe	43
PID 2684 wrote to memory of 332	2684	brrrgxdv.exe	43
PID 2684 wrote to memory of 332	2684	brrrgxdv.exe	43
PID 2684 wrote to memory of 332	2684	brrrgxdv.exe	43
PID 2684 wrote to memory of 332	2684	brrrgxdv.exe	43

C:\Users\Admin\AppData\Local\Temp\8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2764
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pltnvtlk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2760
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\brrrgxdv.exe" C:\Windows\SysWOW64\pltnvtlk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3000
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create pltnvtlk binPath= "C:\Windows\SysWOW64\pltnvtlk\brrrgxdv.exe /d\"C:\Users\Admin\AppData\Local\Temp\8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2956
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description pltnvtlk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2652
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start pltnvtlk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2620
- 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:2216

C:\Windows\SysWOW64\pltnvtlk\brrrgxdv.exe
C:\Windows\SysWOW64\pltnvtlk\brrrgxdv.exe /d"C:\Users\Admin\AppData\Local\Temp\8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2684
- 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:332

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\brrrgxdv.exe

Filesize
11.2MB

MD5
04ef75b3bdd7e01c75884f1f40d36fc6

SHA1
0babae4c488c9808a7e75bf68f8fae740d01314b

SHA256
6574fba9059bae679cfe6d13f404af3fc34eb36e928826bbc989251df658b5dd

SHA512
271ebd22fd4904187b7250f86a1d8bfc8519a8ea86b23f436ec0547c3abf09024f33d92941b56faf42ce47b8780b2c0576782a950c0e7b1f7ad0d09929e034cc

Download Submit
memory/332-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/332-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/332-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/332-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/332-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2684-15-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/2764-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2764-1-0x0000000000270000-0x0000000000370000-memory.dmp

Filesize
1024KB

Download
memory/2764-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2764-9-0x00000000001B0000-0x00000000001C3000-memory.dmp

Filesize
76KB

Download
memory/2764-8-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/2764-2-0x00000000001B0000-0x00000000001C3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads