tofsee | 0f21412ef78f4e467683b52b8936dbb8214ac36cd867bc6c0b665cf602b8b14b

General

Target

3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe
Size

12.6MB
MD5

3fa00b58aed423cd52e2236888c40cb7
SHA1

0284dc151760cf6bd327ff4eff80b5866128228d
SHA256

0f21412ef78f4e467683b52b8936dbb8214ac36cd867bc6c0b665cf602b8b14b
SHA512

df719c5cde89fd90b7042450720d370a4fd9c251e0ad6bdc69c60a50a9a206df717502728555b9466f5fdaa9a3d18e0f8a65053e121c8143cd03e6b57231b3ce
SSDEEP

24576:ikVGNgVLxm55555555555555555555555555555555555555555555555555555L:/VogVq

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan upx

Malware Config

Extracted

Family

tofsee

C2

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\emljwfiy = "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

2784 netsh.exe

pid	process
2784	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\emljwfiy\ImagePath = "C:\\Windows\\SysWOW64\\emljwfiy\\rpyzietp.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2232 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

rpyzietp.exe

pid process

2764 rpyzietp.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

rpyzietp.exe

description pid process target process

PID 2764 set thread context of 2232 2764 rpyzietp.exe svchost.exe

pid	process
2232	svchost.exe

pid	process
2764	rpyzietp.exe

description	pid	process	target process
PID 2764 set thread context of 2232	2764	rpyzietp.exe	svchost.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral1/memory/2588-1-0x0000000000400000-0x0000000005167000-memory.dmp	upx
C:\Users\Admin\AppData\Local\Temp\rpyzietp.exe	upx

Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

2856 sc.exe
1080 sc.exe
2500 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2856	sc.exe
1080	sc.exe
2500	sc.exe

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:

netsh.execmd.exesc.exesc.exerpyzietp.exesvchost.exe3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.execmd.exesc.exe

description	ioc	process
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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rpyzietp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3fa00b58aed423cd52e2236888c40cb7_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

Processes:

3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exerpyzietp.exe

description	pid	process	target process
PID 2588 wrote to memory of 2568	2588	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	cmd.exe
PID 2588 wrote to memory of 2568	2588	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	cmd.exe
PID 2588 wrote to memory of 2568	2588	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	cmd.exe
PID 2588 wrote to memory of 2568	2588	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	cmd.exe
PID 2588 wrote to memory of 1692	2588	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	cmd.exe
PID 2588 wrote to memory of 1692	2588	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	cmd.exe
PID 2588 wrote to memory of 1692	2588	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	cmd.exe
PID 2588 wrote to memory of 1692	2588	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	cmd.exe
PID 2588 wrote to memory of 1080	2588	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	sc.exe
PID 2588 wrote to memory of 1080	2588	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	sc.exe
PID 2588 wrote to memory of 1080	2588	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	sc.exe
PID 2588 wrote to memory of 1080	2588	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	sc.exe
PID 2588 wrote to memory of 2500	2588	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	sc.exe
PID 2588 wrote to memory of 2500	2588	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	sc.exe
PID 2588 wrote to memory of 2500	2588	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	sc.exe
PID 2588 wrote to memory of 2500	2588	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	sc.exe
PID 2588 wrote to memory of 2856	2588	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	sc.exe
PID 2588 wrote to memory of 2856	2588	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	sc.exe
PID 2588 wrote to memory of 2856	2588	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	sc.exe
PID 2588 wrote to memory of 2856	2588	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	sc.exe
PID 2588 wrote to memory of 2784	2588	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	netsh.exe
PID 2588 wrote to memory of 2784	2588	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	netsh.exe
PID 2588 wrote to memory of 2784	2588	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	netsh.exe
PID 2588 wrote to memory of 2784	2588	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	netsh.exe
PID 2764 wrote to memory of 2232	2764	rpyzietp.exe	svchost.exe
PID 2764 wrote to memory of 2232	2764	rpyzietp.exe	svchost.exe
PID 2764 wrote to memory of 2232	2764	rpyzietp.exe	svchost.exe
PID 2764 wrote to memory of 2232	2764	rpyzietp.exe	svchost.exe
PID 2764 wrote to memory of 2232	2764	rpyzietp.exe	svchost.exe
PID 2764 wrote to memory of 2232	2764	rpyzietp.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2588
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\emljwfiy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2568
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rpyzietp.exe" C:\Windows\SysWOW64\emljwfiy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1692
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create emljwfiy binPath= "C:\Windows\SysWOW64\emljwfiy\rpyzietp.exe /d\"C:\Users\Admin\AppData\Local\Temp\3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1080
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description emljwfiy "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2500
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start emljwfiy
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2856
- 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:2784

C:\Windows\SysWOW64\emljwfiy\rpyzietp.exe
C:\Windows\SysWOW64\emljwfiy\rpyzietp.exe /d"C:\Users\Admin\AppData\Local\Temp\3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2764
- 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:2232

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

2

T1562

Disable or Modify System Firewall

1

T1562.004

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\rpyzietp.exe

Filesize
12.7MB

MD5
8acb41314592235341806d04f562f2bd

SHA1
498f85425d17c5b399aad43be933d2a1d3a8ae05

SHA256
14c92aa14ddf02d12316e3b394ea69877c82070c070aec5c29db26792ea889b9

SHA512
2458dab16562cbdb524c1ff575e96549ad103a041b8397378496ee987cff9a1383c77414d1729645cbef80d8746dc5933bca7feae9568ac88c4b227fe7fb98b5

Download Submit
memory/2232-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2232-20-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2232-19-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2232-13-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2232-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2588-5-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2588-11-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2588-10-0x0000000000400000-0x0000000005167000-memory.dmp

Filesize
77.4MB

Download
memory/2588-8-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2588-1-0x0000000000400000-0x0000000005167000-memory.dmp

Filesize
77.4MB

Download
memory/2588-3-0x0000000000270000-0x0000000000370000-memory.dmp

Filesize
1024KB

Download
memory/2588-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2764-18-0x0000000000400000-0x0000000005167000-memory.dmp

Filesize
77.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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