tofsee | c7fc4a06e62713e2e317edb8d4d7a16deab408763d8d2b9eb07cb00dfe4e5391

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
26-12-2024 21:00

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General

Target

JaffaCakes118_c7fc4a06e62713e2e317edb8d4d7a16deab408763d8d2b9eb07cb00dfe4e5391.exe
Size

165KB
MD5

d5a681d05ff818203baa6089fd07136e
SHA1

ce8e81746a32507d44050cfaa65ed9740c81acdc
SHA256

c7fc4a06e62713e2e317edb8d4d7a16deab408763d8d2b9eb07cb00dfe4e5391
SHA512

b84c65ec603656e5a369dc6129024e0436642c0f0837a4de665ed838bdbe5a8eab94b656edbd7bfcb177ba768b29c9fa2db91f6b6b3a613ac86694127759f076
SSDEEP

3072:iuerXeNjwshS8o15iZ9/D+3pCTMfsHY87+e2:SrXOjwshStiZo3Eas487+R

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\ruiieymg = "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
2584	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\ruiieymg\ImagePath = "C:\\Windows\\SysWOW64\\ruiieymg\\buiumgiv.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2612	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2812	buiumgiv.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2812 set thread context of 2612	2812	buiumgiv.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
2724	sc.exe
2852	sc.exe
2940	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	JaffaCakes118_c7fc4a06e62713e2e317edb8d4d7a16deab408763d8d2b9eb07cb00dfe4e5391.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	buiumgiv.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

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1780 wrote to memory of 2500	1780	JaffaCakes118_c7fc4a06e62713e2e317edb8d4d7a16deab408763d8d2b9eb07cb00dfe4e5391.exe	31
PID 1780 wrote to memory of 2500	1780	JaffaCakes118_c7fc4a06e62713e2e317edb8d4d7a16deab408763d8d2b9eb07cb00dfe4e5391.exe	31
PID 1780 wrote to memory of 2500	1780	JaffaCakes118_c7fc4a06e62713e2e317edb8d4d7a16deab408763d8d2b9eb07cb00dfe4e5391.exe	31
PID 1780 wrote to memory of 2500	1780	JaffaCakes118_c7fc4a06e62713e2e317edb8d4d7a16deab408763d8d2b9eb07cb00dfe4e5391.exe	31
PID 1780 wrote to memory of 2784	1780	JaffaCakes118_c7fc4a06e62713e2e317edb8d4d7a16deab408763d8d2b9eb07cb00dfe4e5391.exe	33
PID 1780 wrote to memory of 2784	1780	JaffaCakes118_c7fc4a06e62713e2e317edb8d4d7a16deab408763d8d2b9eb07cb00dfe4e5391.exe	33
PID 1780 wrote to memory of 2784	1780	JaffaCakes118_c7fc4a06e62713e2e317edb8d4d7a16deab408763d8d2b9eb07cb00dfe4e5391.exe	33
PID 1780 wrote to memory of 2784	1780	JaffaCakes118_c7fc4a06e62713e2e317edb8d4d7a16deab408763d8d2b9eb07cb00dfe4e5391.exe	33
PID 1780 wrote to memory of 2724	1780	JaffaCakes118_c7fc4a06e62713e2e317edb8d4d7a16deab408763d8d2b9eb07cb00dfe4e5391.exe	35
PID 1780 wrote to memory of 2724	1780	JaffaCakes118_c7fc4a06e62713e2e317edb8d4d7a16deab408763d8d2b9eb07cb00dfe4e5391.exe	35
PID 1780 wrote to memory of 2724	1780	JaffaCakes118_c7fc4a06e62713e2e317edb8d4d7a16deab408763d8d2b9eb07cb00dfe4e5391.exe	35
PID 1780 wrote to memory of 2724	1780	JaffaCakes118_c7fc4a06e62713e2e317edb8d4d7a16deab408763d8d2b9eb07cb00dfe4e5391.exe	35
PID 1780 wrote to memory of 2852	1780	JaffaCakes118_c7fc4a06e62713e2e317edb8d4d7a16deab408763d8d2b9eb07cb00dfe4e5391.exe	37
PID 1780 wrote to memory of 2852	1780	JaffaCakes118_c7fc4a06e62713e2e317edb8d4d7a16deab408763d8d2b9eb07cb00dfe4e5391.exe	37
PID 1780 wrote to memory of 2852	1780	JaffaCakes118_c7fc4a06e62713e2e317edb8d4d7a16deab408763d8d2b9eb07cb00dfe4e5391.exe	37
PID 1780 wrote to memory of 2852	1780	JaffaCakes118_c7fc4a06e62713e2e317edb8d4d7a16deab408763d8d2b9eb07cb00dfe4e5391.exe	37
PID 1780 wrote to memory of 2940	1780	JaffaCakes118_c7fc4a06e62713e2e317edb8d4d7a16deab408763d8d2b9eb07cb00dfe4e5391.exe	39
PID 1780 wrote to memory of 2940	1780	JaffaCakes118_c7fc4a06e62713e2e317edb8d4d7a16deab408763d8d2b9eb07cb00dfe4e5391.exe	39
PID 1780 wrote to memory of 2940	1780	JaffaCakes118_c7fc4a06e62713e2e317edb8d4d7a16deab408763d8d2b9eb07cb00dfe4e5391.exe	39
PID 1780 wrote to memory of 2940	1780	JaffaCakes118_c7fc4a06e62713e2e317edb8d4d7a16deab408763d8d2b9eb07cb00dfe4e5391.exe	39
PID 2812 wrote to memory of 2612	2812	buiumgiv.exe	42
PID 2812 wrote to memory of 2612	2812	buiumgiv.exe	42
PID 2812 wrote to memory of 2612	2812	buiumgiv.exe	42
PID 2812 wrote to memory of 2612	2812	buiumgiv.exe	42
PID 2812 wrote to memory of 2612	2812	buiumgiv.exe	42
PID 2812 wrote to memory of 2612	2812	buiumgiv.exe	42
PID 1780 wrote to memory of 2584	1780	JaffaCakes118_c7fc4a06e62713e2e317edb8d4d7a16deab408763d8d2b9eb07cb00dfe4e5391.exe	43
PID 1780 wrote to memory of 2584	1780	JaffaCakes118_c7fc4a06e62713e2e317edb8d4d7a16deab408763d8d2b9eb07cb00dfe4e5391.exe	43
PID 1780 wrote to memory of 2584	1780	JaffaCakes118_c7fc4a06e62713e2e317edb8d4d7a16deab408763d8d2b9eb07cb00dfe4e5391.exe	43
PID 1780 wrote to memory of 2584	1780	JaffaCakes118_c7fc4a06e62713e2e317edb8d4d7a16deab408763d8d2b9eb07cb00dfe4e5391.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c7fc4a06e62713e2e317edb8d4d7a16deab408763d8d2b9eb07cb00dfe4e5391.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c7fc4a06e62713e2e317edb8d4d7a16deab408763d8d2b9eb07cb00dfe4e5391.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1780
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ruiieymg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2500
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\buiumgiv.exe" C:\Windows\SysWOW64\ruiieymg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2784
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ruiieymg binPath= "C:\Windows\SysWOW64\ruiieymg\buiumgiv.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c7fc4a06e62713e2e317edb8d4d7a16deab408763d8d2b9eb07cb00dfe4e5391.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2724
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ruiieymg "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2852
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ruiieymg
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2940
- 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:2584

C:\Windows\SysWOW64\ruiieymg\buiumgiv.exe
C:\Windows\SysWOW64\ruiieymg\buiumgiv.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c7fc4a06e62713e2e317edb8d4d7a16deab408763d8d2b9eb07cb00dfe4e5391.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2812
- 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:2612

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\buiumgiv.exe

Filesize
13.6MB

MD5
b67ddc9499ecd3f0730bb66dd496b8c2

SHA1
13e1b23f33bd21c79ecd0de65472ccf7e0f3d8b8

SHA256
a466d773bec1b8664bcd0b707bd7d6343c6be732c31cf49ddc04c45df42ce365

SHA512
172a8f4cfd13bd2d7ce513d5909f0e03ef6b7c70dda92c7b8bee1bd7456425f55c64290417e1caee83f3b6098f4a9d943185186bc1865462f1b1858f93ff987a

Download Submit
memory/1780-14-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/1780-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1780-1-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/1780-15-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1780-0-0x00000000001B0000-0x00000000001BD000-memory.dmp

Filesize
52KB

Download
memory/1780-13-0x00000000001B0000-0x00000000001BD000-memory.dmp

Filesize
52KB

Download
memory/1780-12-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2612-9-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2612-8-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2612-6-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2612-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2612-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2812-11-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads