tofsee | 3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448

Analysis

max time kernel
149s
max time network
149s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
29-12-2024 11:44

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General

Target

JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe
Size

246KB
MD5

ece784cccb962922fc1854433038c4cf
SHA1

3484e8fa539bac64f269584cc0f368cc7af89ee2
SHA256

3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448
SHA512

a594719d1ff40e4186f32a5a3d5955fe565bda2fbac6970bbcf4221939bf76ee064a4f36acf2fb1ff848028f2498b57f07cc0b691a797d7789eccf6e47a7e682
SSDEEP

6144:m2xmEmR0kLmK7vk1puzbgwu6QigabwVf:m0mEmR0ZKz8unn5

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\rxfyjeuo = "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
2720	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\rxfyjeuo\ImagePath = "C:\\Windows\\SysWOW64\\rxfyjeuo\\ceynjfbs.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
876	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
824	ceynjfbs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 824 set thread context of 876	824	ceynjfbs.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2464	sc.exe
796	sc.exe
1904	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	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ceynjfbs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1812 wrote to memory of 3068	1812	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	30
PID 1812 wrote to memory of 3068	1812	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	30
PID 1812 wrote to memory of 3068	1812	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	30
PID 1812 wrote to memory of 3068	1812	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	30
PID 1812 wrote to memory of 2468	1812	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	32
PID 1812 wrote to memory of 2468	1812	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	32
PID 1812 wrote to memory of 2468	1812	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	32
PID 1812 wrote to memory of 2468	1812	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	32
PID 1812 wrote to memory of 2464	1812	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	34
PID 1812 wrote to memory of 2464	1812	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	34
PID 1812 wrote to memory of 2464	1812	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	34
PID 1812 wrote to memory of 2464	1812	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	34
PID 1812 wrote to memory of 796	1812	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	37
PID 1812 wrote to memory of 796	1812	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	37
PID 1812 wrote to memory of 796	1812	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	37
PID 1812 wrote to memory of 796	1812	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	37
PID 1812 wrote to memory of 1904	1812	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	39
PID 1812 wrote to memory of 1904	1812	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	39
PID 1812 wrote to memory of 1904	1812	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	39
PID 1812 wrote to memory of 1904	1812	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	39
PID 1812 wrote to memory of 2720	1812	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	42
PID 1812 wrote to memory of 2720	1812	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	42
PID 1812 wrote to memory of 2720	1812	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	42
PID 1812 wrote to memory of 2720	1812	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	42
PID 824 wrote to memory of 876	824	ceynjfbs.exe	44
PID 824 wrote to memory of 876	824	ceynjfbs.exe	44
PID 824 wrote to memory of 876	824	ceynjfbs.exe	44
PID 824 wrote to memory of 876	824	ceynjfbs.exe	44
PID 824 wrote to memory of 876	824	ceynjfbs.exe	44
PID 824 wrote to memory of 876	824	ceynjfbs.exe	44

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1812
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rxfyjeuo\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3068
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ceynjfbs.exe" C:\Windows\SysWOW64\rxfyjeuo\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2468
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create rxfyjeuo binPath= "C:\Windows\SysWOW64\rxfyjeuo\ceynjfbs.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2464
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description rxfyjeuo "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:796
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start rxfyjeuo
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1904
- 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:2720

C:\Windows\SysWOW64\rxfyjeuo\ceynjfbs.exe
C:\Windows\SysWOW64\rxfyjeuo\ceynjfbs.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:824
- 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:876

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\ceynjfbs.exe

Filesize
11.2MB

MD5
23257bccb52f826daf610d05d589fccc

SHA1
8dd7f84565961293710364710bed6ef375f8315e

SHA256
b953b3cb81b2107c6871f77a94ddf782aad57f996715906de4e81f8227770c26

SHA512
d7918296d38c44a78e2eb8b947a911bd52f1f2e233e271f7e492c55aa02055889051439f85f050dfaf6d29d87bc3479fd37742e8522bb1e9c61232365939b7e7

Download Submit
memory/824-16-0x0000000000400000-0x0000000000447000-memory.dmp

Filesize
284KB

Download
memory/876-13-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/876-10-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/876-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/876-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/876-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1812-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1812-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1812-8-0x00000000002B0000-0x00000000002C3000-memory.dmp

Filesize
76KB

Download
memory/1812-7-0x0000000000220000-0x000000000022D000-memory.dmp

Filesize
52KB

Download
memory/1812-6-0x0000000000400000-0x0000000000447000-memory.dmp

Filesize
284KB

Download
memory/1812-0-0x0000000000220000-0x000000000022D000-memory.dmp

Filesize
52KB

Download
memory/1812-1-0x00000000002B0000-0x00000000002C3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads