tofsee | 5f999ebf50703e544ffae3c27d30df4441a54f12360e7482135c02f58b95f724

Analysis

max time kernel
143s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
16-09-2024 13:52

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General

Target

e4e980a178180b5aa5f096c10e9f5557_JaffaCakes118.exe
Size

142KB
MD5

e4e980a178180b5aa5f096c10e9f5557
SHA1

f55b0a91c0cc81e61d6f23b8695ce4fa917f04d6
SHA256

5f999ebf50703e544ffae3c27d30df4441a54f12360e7482135c02f58b95f724
SHA512

5f762ee974d14b69deb25266835644a20862f2da14f64bde6885ff27e1250b840d6cf44f3f3b36742b1502692f879382ccc59c8cab08d56b299cd8c71a3f6109
SSDEEP

3072:4O8/FLfgt6rzTkYfiL2+jKfgi4m5nuGFU6W6WN06b3U:s9fzwFLnKP46uC

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

43.231.4.7

lazystax.ru

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

Processes:

svchost.exe

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\fburubju = "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

Processes:

netsh.exe

pid	Process
2732	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\fburubju\ImagePath = "C:\\Windows\\SysWOW64\\fburubju\\lxrvnxth.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid	Process
2832	svchost.exe

Executes dropped EXE 1 IoCs

Processes:

lxrvnxth.exe

pid	Process
3004	lxrvnxth.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

lxrvnxth.exe

description	pid	Process	procid_target
PID 3004 set thread context of 2832	3004	lxrvnxth.exe	43

Launches sc.exe 3 IoCs

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

Processes:

sc.exesc.exesc.exe

pid	Process
2728	sc.exe
2724	sc.exe
2692	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

Processes:

netsh.exe

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

Processes:

e4e980a178180b5aa5f096c10e9f5557_JaffaCakes118.execmd.execmd.exesc.exesc.exelxrvnxth.exenetsh.exesc.exesvchost.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e4e980a178180b5aa5f096c10e9f5557_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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	lxrvnxth.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

e4e980a178180b5aa5f096c10e9f5557_JaffaCakes118.exelxrvnxth.exe

description	pid	Process	procid_target
PID 2684 wrote to memory of 2464	2684	e4e980a178180b5aa5f096c10e9f5557_JaffaCakes118.exe	30
PID 2684 wrote to memory of 2464	2684	e4e980a178180b5aa5f096c10e9f5557_JaffaCakes118.exe	30
PID 2684 wrote to memory of 2464	2684	e4e980a178180b5aa5f096c10e9f5557_JaffaCakes118.exe	30
PID 2684 wrote to memory of 2464	2684	e4e980a178180b5aa5f096c10e9f5557_JaffaCakes118.exe	30
PID 2684 wrote to memory of 2492	2684	e4e980a178180b5aa5f096c10e9f5557_JaffaCakes118.exe	32
PID 2684 wrote to memory of 2492	2684	e4e980a178180b5aa5f096c10e9f5557_JaffaCakes118.exe	32
PID 2684 wrote to memory of 2492	2684	e4e980a178180b5aa5f096c10e9f5557_JaffaCakes118.exe	32
PID 2684 wrote to memory of 2492	2684	e4e980a178180b5aa5f096c10e9f5557_JaffaCakes118.exe	32
PID 2684 wrote to memory of 2692	2684	e4e980a178180b5aa5f096c10e9f5557_JaffaCakes118.exe	34
PID 2684 wrote to memory of 2692	2684	e4e980a178180b5aa5f096c10e9f5557_JaffaCakes118.exe	34
PID 2684 wrote to memory of 2692	2684	e4e980a178180b5aa5f096c10e9f5557_JaffaCakes118.exe	34
PID 2684 wrote to memory of 2692	2684	e4e980a178180b5aa5f096c10e9f5557_JaffaCakes118.exe	34
PID 2684 wrote to memory of 2728	2684	e4e980a178180b5aa5f096c10e9f5557_JaffaCakes118.exe	36
PID 2684 wrote to memory of 2728	2684	e4e980a178180b5aa5f096c10e9f5557_JaffaCakes118.exe	36
PID 2684 wrote to memory of 2728	2684	e4e980a178180b5aa5f096c10e9f5557_JaffaCakes118.exe	36
PID 2684 wrote to memory of 2728	2684	e4e980a178180b5aa5f096c10e9f5557_JaffaCakes118.exe	36
PID 2684 wrote to memory of 2724	2684	e4e980a178180b5aa5f096c10e9f5557_JaffaCakes118.exe	38
PID 2684 wrote to memory of 2724	2684	e4e980a178180b5aa5f096c10e9f5557_JaffaCakes118.exe	38
PID 2684 wrote to memory of 2724	2684	e4e980a178180b5aa5f096c10e9f5557_JaffaCakes118.exe	38
PID 2684 wrote to memory of 2724	2684	e4e980a178180b5aa5f096c10e9f5557_JaffaCakes118.exe	38
PID 2684 wrote to memory of 2732	2684	e4e980a178180b5aa5f096c10e9f5557_JaffaCakes118.exe	41
PID 2684 wrote to memory of 2732	2684	e4e980a178180b5aa5f096c10e9f5557_JaffaCakes118.exe	41
PID 2684 wrote to memory of 2732	2684	e4e980a178180b5aa5f096c10e9f5557_JaffaCakes118.exe	41
PID 2684 wrote to memory of 2732	2684	e4e980a178180b5aa5f096c10e9f5557_JaffaCakes118.exe	41
PID 3004 wrote to memory of 2832	3004	lxrvnxth.exe	43
PID 3004 wrote to memory of 2832	3004	lxrvnxth.exe	43
PID 3004 wrote to memory of 2832	3004	lxrvnxth.exe	43
PID 3004 wrote to memory of 2832	3004	lxrvnxth.exe	43
PID 3004 wrote to memory of 2832	3004	lxrvnxth.exe	43
PID 3004 wrote to memory of 2832	3004	lxrvnxth.exe	43

C:\Users\Admin\AppData\Local\Temp\e4e980a178180b5aa5f096c10e9f5557_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e4e980a178180b5aa5f096c10e9f5557_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2684
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fburubju\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2464
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\lxrvnxth.exe" C:\Windows\SysWOW64\fburubju\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2492
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fburubju binPath= "C:\Windows\SysWOW64\fburubju\lxrvnxth.exe /d\"C:\Users\Admin\AppData\Local\Temp\e4e980a178180b5aa5f096c10e9f5557_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2692
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fburubju "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2728
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fburubju
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2724
- 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:2732

C:\Windows\SysWOW64\fburubju\lxrvnxth.exe
C:\Windows\SysWOW64\fburubju\lxrvnxth.exe /d"C:\Users\Admin\AppData\Local\Temp\e4e980a178180b5aa5f096c10e9f5557_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3004
- 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:2832

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\lxrvnxth.exe

Filesize
10.9MB

MD5
d14f05a9610bf4533b2864ebc2beabf0

SHA1
165daf912d698446a79013bd46168c89dc128aff

SHA256
97f1e8b7747c07e425e5d2435876a47fc21ac99f3670b41b109d297b43aaebb2

SHA512
2c81077efe4421c608a853aabc9284565b33b60701b7c6f9973458ab85509acf6f25b8536ac6c43d7e5a0781c89bf1ef1eca77fd0b32ac3a8fd8df2d7a929c55

Download Submit
memory/2684-0-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download
memory/2684-1-0x0000000000260000-0x0000000000261000-memory.dmp

Filesize
4KB

Download
memory/2684-2-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2684-6-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2832-13-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2832-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2832-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2832-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2832-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3004-7-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/3004-14-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download