tofsee | 4119098cb2c53b1fc2619b83c3eecee5e07dfda7c9e6734fd145721fad15cf65

Analysis

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

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
07-10-2024 04:30

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General

Target

1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe
Size

10.5MB
MD5

1b7dbf198800af119607b4fd81e60e59
SHA1

f68c015bad7ec31ee18d4e097931511f329d59fc
SHA256

4119098cb2c53b1fc2619b83c3eecee5e07dfda7c9e6734fd145721fad15cf65
SHA512

a432c931059746150d0072a212d102352640de6f8e81624b9549e7dd1f3883b14f71c549312af5bf24f0038ba23f43163d43057922cdf0ebb3b28e567ba9c9c9
SSDEEP

6144:frxbJOIoKZyaaUo9t+m7c74mOGjZP6NEpTvBzRxkac1B:jF/ZyaaUk+m7c7ZRiNEpTGa

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\ssyaavaj = "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
2884	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\ssyaavaj\ImagePath = "C:\\Windows\\SysWOW64\\ssyaavaj\\vhtbbmbj.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2852	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2832	vhtbbmbj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2832 set thread context of 2852	2832	vhtbbmbj.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
1892	sc.exe
2384	sc.exe
2060	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 queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\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	svchost.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	vhtbbmbj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1b7dbf198800af119607b4fd81e60e59_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 1928 wrote to memory of 2356	1928	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	30
PID 1928 wrote to memory of 2356	1928	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	30
PID 1928 wrote to memory of 2356	1928	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	30
PID 1928 wrote to memory of 2356	1928	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	30
PID 1928 wrote to memory of 2128	1928	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	32
PID 1928 wrote to memory of 2128	1928	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	32
PID 1928 wrote to memory of 2128	1928	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	32
PID 1928 wrote to memory of 2128	1928	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	32
PID 1928 wrote to memory of 1892	1928	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	34
PID 1928 wrote to memory of 1892	1928	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	34
PID 1928 wrote to memory of 1892	1928	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	34
PID 1928 wrote to memory of 1892	1928	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	34
PID 1928 wrote to memory of 2384	1928	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	36
PID 1928 wrote to memory of 2384	1928	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	36
PID 1928 wrote to memory of 2384	1928	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	36
PID 1928 wrote to memory of 2384	1928	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	36
PID 1928 wrote to memory of 2060	1928	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	39
PID 1928 wrote to memory of 2060	1928	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	39
PID 1928 wrote to memory of 2060	1928	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	39
PID 1928 wrote to memory of 2060	1928	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	39
PID 1928 wrote to memory of 2884	1928	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	42
PID 1928 wrote to memory of 2884	1928	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	42
PID 1928 wrote to memory of 2884	1928	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	42
PID 1928 wrote to memory of 2884	1928	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	42
PID 2832 wrote to memory of 2852	2832	vhtbbmbj.exe	44
PID 2832 wrote to memory of 2852	2832	vhtbbmbj.exe	44
PID 2832 wrote to memory of 2852	2832	vhtbbmbj.exe	44
PID 2832 wrote to memory of 2852	2832	vhtbbmbj.exe	44
PID 2832 wrote to memory of 2852	2832	vhtbbmbj.exe	44
PID 2832 wrote to memory of 2852	2832	vhtbbmbj.exe	44

C:\Users\Admin\AppData\Local\Temp\1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1928
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ssyaavaj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2356
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vhtbbmbj.exe" C:\Windows\SysWOW64\ssyaavaj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2128
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ssyaavaj binPath= "C:\Windows\SysWOW64\ssyaavaj\vhtbbmbj.exe /d\"C:\Users\Admin\AppData\Local\Temp\1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1892
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ssyaavaj "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2384
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ssyaavaj
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2060
- 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:2884

C:\Windows\SysWOW64\ssyaavaj\vhtbbmbj.exe
C:\Windows\SysWOW64\ssyaavaj\vhtbbmbj.exe /d"C:\Users\Admin\AppData\Local\Temp\1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2832
- 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:2852

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\vhtbbmbj.exe

Filesize
13.6MB

MD5
e1f8a714be39565718dcda77f3aa3b5e

SHA1
3a18a29f5a622af8d805a170d0eacf00abcee049

SHA256
ac95e0cf90cb3f8d682997b6489d6eb4bc47b52c2ac1926527211b4871c9d049

SHA512
bb2dd959af5dc8c534456fce3f8eefcf2a5327a54ad237aa2f4a4f6ffb47bf52e7f1b5f0b3ea65b0705e96131128d8ab2021af0cf55ee89b2d9de19819c78b8a

Download Submit
memory/1928-8-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/1928-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1928-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1928-10-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1928-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1928-1-0x00000000004D0000-0x00000000005D0000-memory.dmp

Filesize
1024KB

Download
memory/2832-15-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2852-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2852-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2852-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2852-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2852-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads