tofsee | 0820b73765ba21a982c1e1b79c9b70af179535bbca414ae169a7f75d8022ea0c

Analysis

max time kernel
144s
max time network
144s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
15-12-2024 10:51

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General

Target

f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe
Size

13.2MB
MD5

f3a7c04cd3be48d3ec424e3bd0eb703a
SHA1

f0fe234d51dfaa9c15d28bb8dd0c6eca181fd2b7
SHA256

0820b73765ba21a982c1e1b79c9b70af179535bbca414ae169a7f75d8022ea0c
SHA512

13875f056feaf3ab9805c8549c1ba1afe923b34fdce9384ac352a173e378f0d6627015a7c1918374570b7a174f7e0600888a97025127089b656fa7bb3183b4ea
SSDEEP

49152:bSGAcdeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeq:bSO

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\peznmyt = "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
2888	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\peznmyt\ImagePath = "C:\\Windows\\SysWOW64\\peznmyt\\krpafaoc.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2736	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2824	krpafaoc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2824 set thread context of 2736	2824	krpafaoc.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2340	sc.exe
2748	sc.exe
1940	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	krpafaoc.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	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.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 1680 wrote to memory of 2524	1680	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	30
PID 1680 wrote to memory of 2524	1680	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	30
PID 1680 wrote to memory of 2524	1680	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	30
PID 1680 wrote to memory of 2524	1680	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	30
PID 1680 wrote to memory of 2552	1680	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	32
PID 1680 wrote to memory of 2552	1680	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	32
PID 1680 wrote to memory of 2552	1680	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	32
PID 1680 wrote to memory of 2552	1680	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	32
PID 1680 wrote to memory of 1940	1680	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	34
PID 1680 wrote to memory of 1940	1680	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	34
PID 1680 wrote to memory of 1940	1680	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	34
PID 1680 wrote to memory of 1940	1680	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	34
PID 1680 wrote to memory of 2340	1680	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	36
PID 1680 wrote to memory of 2340	1680	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	36
PID 1680 wrote to memory of 2340	1680	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	36
PID 1680 wrote to memory of 2340	1680	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	36
PID 1680 wrote to memory of 2748	1680	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	38
PID 1680 wrote to memory of 2748	1680	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	38
PID 1680 wrote to memory of 2748	1680	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	38
PID 1680 wrote to memory of 2748	1680	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	38
PID 1680 wrote to memory of 2888	1680	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	41
PID 1680 wrote to memory of 2888	1680	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	41
PID 1680 wrote to memory of 2888	1680	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	41
PID 1680 wrote to memory of 2888	1680	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	41
PID 2824 wrote to memory of 2736	2824	krpafaoc.exe	43
PID 2824 wrote to memory of 2736	2824	krpafaoc.exe	43
PID 2824 wrote to memory of 2736	2824	krpafaoc.exe	43
PID 2824 wrote to memory of 2736	2824	krpafaoc.exe	43
PID 2824 wrote to memory of 2736	2824	krpafaoc.exe	43
PID 2824 wrote to memory of 2736	2824	krpafaoc.exe	43

C:\Users\Admin\AppData\Local\Temp\f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1680
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\peznmyt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2524
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\krpafaoc.exe" C:\Windows\SysWOW64\peznmyt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2552
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create peznmyt binPath= "C:\Windows\SysWOW64\peznmyt\krpafaoc.exe /d\"C:\Users\Admin\AppData\Local\Temp\f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1940
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description peznmyt "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2340
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start peznmyt
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2748
- 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:2888

C:\Windows\SysWOW64\peznmyt\krpafaoc.exe
C:\Windows\SysWOW64\peznmyt\krpafaoc.exe /d"C:\Users\Admin\AppData\Local\Temp\f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2824
- 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:2736

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\krpafaoc.exe

Filesize
10.3MB

MD5
3512ca6f71c879bb8be81b355bdcc4e6

SHA1
5144fbc9a63447b620999dae4af069d5f6cefb96

SHA256
c62e8337c52a02861c9d0b5ef99c0fe5cef0766977a287ecf336b06c4db8295b

SHA512
b535c5cbe834f71a9e978a777a0cff07abb16e236870d0995683e78ef76cfbedabbfc7feff3ac0fa7b3af17da6dffd15a89c195d5b2ed9ebeb31e9e20bf54342

Download Submit
memory/1680-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1680-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1680-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1680-8-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/1680-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1680-1-0x0000000000950000-0x0000000000A50000-memory.dmp

Filesize
1024KB

Download
memory/2736-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2736-11-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2736-16-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2736-14-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2736-18-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2824-17-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads