tofsee | e95dc31697c70aeaa6ce846868058f3d47a94ed236b2ea45028f4c1e71ff9009

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
30-11-2024 01:21

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General

Target

b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe
Size

11.8MB
MD5

b44f56e69a2fecb2aa2c087de04041a8
SHA1

c4277bc1cd4b2f6218659949a9749ffb3b8ac590
SHA256

e95dc31697c70aeaa6ce846868058f3d47a94ed236b2ea45028f4c1e71ff9009
SHA512

71d04ebaad7f507907fa5958c6bc369b4cf02bfc7ee892a6a2ad89e67eafe432bbf60c589dee657ed29b6fa4afdb72fc577f7ad11548647443c04a1ad5f0cd13
SSDEEP

6144:IesoFeYHECHsLsx6mihb12P5qpWV0m68jM7LjmpeM:Inu/HECz6S5QWlnqOpe

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\jtncojsa = "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
2896	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\jtncojsa\ImagePath = "C:\\Windows\\SysWOW64\\jtncojsa\\cssshyew.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2472	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2916	cssshyew.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2916 set thread context of 2472	2916	cssshyew.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2768	sc.exe
2944	sc.exe
2328	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	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	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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	cssshyew.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2080 wrote to memory of 1944	2080	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	31
PID 2080 wrote to memory of 1944	2080	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	31
PID 2080 wrote to memory of 1944	2080	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	31
PID 2080 wrote to memory of 1944	2080	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	31
PID 2080 wrote to memory of 1796	2080	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	33
PID 2080 wrote to memory of 1796	2080	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	33
PID 2080 wrote to memory of 1796	2080	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	33
PID 2080 wrote to memory of 1796	2080	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	33
PID 2080 wrote to memory of 2944	2080	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	35
PID 2080 wrote to memory of 2944	2080	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	35
PID 2080 wrote to memory of 2944	2080	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	35
PID 2080 wrote to memory of 2944	2080	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	35
PID 2080 wrote to memory of 2328	2080	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	37
PID 2080 wrote to memory of 2328	2080	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	37
PID 2080 wrote to memory of 2328	2080	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	37
PID 2080 wrote to memory of 2328	2080	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	37
PID 2080 wrote to memory of 2768	2080	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	39
PID 2080 wrote to memory of 2768	2080	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	39
PID 2080 wrote to memory of 2768	2080	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	39
PID 2080 wrote to memory of 2768	2080	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	39
PID 2080 wrote to memory of 2896	2080	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	42
PID 2080 wrote to memory of 2896	2080	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	42
PID 2080 wrote to memory of 2896	2080	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	42
PID 2080 wrote to memory of 2896	2080	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	42
PID 2916 wrote to memory of 2472	2916	cssshyew.exe	44
PID 2916 wrote to memory of 2472	2916	cssshyew.exe	44
PID 2916 wrote to memory of 2472	2916	cssshyew.exe	44
PID 2916 wrote to memory of 2472	2916	cssshyew.exe	44
PID 2916 wrote to memory of 2472	2916	cssshyew.exe	44
PID 2916 wrote to memory of 2472	2916	cssshyew.exe	44

C:\Users\Admin\AppData\Local\Temp\b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2080
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jtncojsa\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1944
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cssshyew.exe" C:\Windows\SysWOW64\jtncojsa\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1796
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create jtncojsa binPath= "C:\Windows\SysWOW64\jtncojsa\cssshyew.exe /d\"C:\Users\Admin\AppData\Local\Temp\b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2944
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description jtncojsa "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2328
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start jtncojsa
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2768
- 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:2896

C:\Windows\SysWOW64\jtncojsa\cssshyew.exe
C:\Windows\SysWOW64\jtncojsa\cssshyew.exe /d"C:\Users\Admin\AppData\Local\Temp\b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2916
- 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:2472

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\cssshyew.exe

Filesize
10.2MB

MD5
53771902d6f7c7aa92f40864f8393303

SHA1
90dce929ac87fac77b64efb49eaa6a16ab779bb2

SHA256
83159d5c2d4764f946422256e839efe3d65ba41e2b9b8190368008188ceb64ba

SHA512
19c0bf291d97276a3d483d9a2986d06e24fc5382c3909308f49818c8eafebd035a87a92702639471e1f97b24ccbfb5fdc2e9eb1048e22258fb94675638b4c992

Download Submit
memory/2080-1-0x00000000008F0000-0x00000000009F0000-memory.dmp

Filesize
1024KB

Download
memory/2080-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2080-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2080-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2080-8-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/2472-13-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2472-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2472-10-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2472-15-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2472-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2916-16-0x0000000000400000-0x000000000086B000-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