tofsee | 85f52025f20d7c908a33db506d5618087b3c73d13bf461a90401df0e6e561af4

General

Target

de1304cd9a3df49bed31e2e30455228a_JaffaCakes118.exe
Size

14.8MB
MD5

de1304cd9a3df49bed31e2e30455228a
SHA1

a313f8c3ff1fc8af63c97e1fccb1665734937aa8
SHA256

85f52025f20d7c908a33db506d5618087b3c73d13bf461a90401df0e6e561af4
SHA512

dff870d3dd794aea9b1a5258d9e354d7ad8f3c1c5e38e5559af968c7adde4584f0a83fb84c566a25287371c02dce72b27bde7193b7ce3031e01bc91a64f4a78f
SSDEEP

196608:p3qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqX:p

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

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\tmybcez = "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

2768 netsh.exe

pid	process
2768	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\tmybcez\ImagePath = "C:\\Windows\\SysWOW64\\tmybcez\\eyualvnt.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2388 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

eyualvnt.exe

pid process

2712 eyualvnt.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

eyualvnt.exe

description pid process target process

PID 2712 set thread context of 2388 2712 eyualvnt.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

2548 sc.exe
2576 sc.exe
2580 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2388	svchost.exe

pid	process
2712	eyualvnt.exe

description	pid	process	target process
PID 2712 set thread context of 2388	2712	eyualvnt.exe	svchost.exe

pid	process
2548	sc.exe
2576	sc.exe
2580	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 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

Processes:

de1304cd9a3df49bed31e2e30455228a_JaffaCakes118.execmd.exesc.exesc.exesc.exenetsh.execmd.exeeyualvnt.exesvchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	de1304cd9a3df49bed31e2e30455228a_JaffaCakes118.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	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	eyualvnt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

de1304cd9a3df49bed31e2e30455228a_JaffaCakes118.exeeyualvnt.exe

description	pid	process	target process
PID 2636 wrote to memory of 2748	2636	de1304cd9a3df49bed31e2e30455228a_JaffaCakes118.exe	cmd.exe
PID 2636 wrote to memory of 2748	2636	de1304cd9a3df49bed31e2e30455228a_JaffaCakes118.exe	cmd.exe
PID 2636 wrote to memory of 2748	2636	de1304cd9a3df49bed31e2e30455228a_JaffaCakes118.exe	cmd.exe
PID 2636 wrote to memory of 2748	2636	de1304cd9a3df49bed31e2e30455228a_JaffaCakes118.exe	cmd.exe
PID 2636 wrote to memory of 2736	2636	de1304cd9a3df49bed31e2e30455228a_JaffaCakes118.exe	cmd.exe
PID 2636 wrote to memory of 2736	2636	de1304cd9a3df49bed31e2e30455228a_JaffaCakes118.exe	cmd.exe
PID 2636 wrote to memory of 2736	2636	de1304cd9a3df49bed31e2e30455228a_JaffaCakes118.exe	cmd.exe
PID 2636 wrote to memory of 2736	2636	de1304cd9a3df49bed31e2e30455228a_JaffaCakes118.exe	cmd.exe
PID 2636 wrote to memory of 2548	2636	de1304cd9a3df49bed31e2e30455228a_JaffaCakes118.exe	sc.exe
PID 2636 wrote to memory of 2548	2636	de1304cd9a3df49bed31e2e30455228a_JaffaCakes118.exe	sc.exe
PID 2636 wrote to memory of 2548	2636	de1304cd9a3df49bed31e2e30455228a_JaffaCakes118.exe	sc.exe
PID 2636 wrote to memory of 2548	2636	de1304cd9a3df49bed31e2e30455228a_JaffaCakes118.exe	sc.exe
PID 2636 wrote to memory of 2576	2636	de1304cd9a3df49bed31e2e30455228a_JaffaCakes118.exe	sc.exe
PID 2636 wrote to memory of 2576	2636	de1304cd9a3df49bed31e2e30455228a_JaffaCakes118.exe	sc.exe
PID 2636 wrote to memory of 2576	2636	de1304cd9a3df49bed31e2e30455228a_JaffaCakes118.exe	sc.exe
PID 2636 wrote to memory of 2576	2636	de1304cd9a3df49bed31e2e30455228a_JaffaCakes118.exe	sc.exe
PID 2636 wrote to memory of 2580	2636	de1304cd9a3df49bed31e2e30455228a_JaffaCakes118.exe	sc.exe
PID 2636 wrote to memory of 2580	2636	de1304cd9a3df49bed31e2e30455228a_JaffaCakes118.exe	sc.exe
PID 2636 wrote to memory of 2580	2636	de1304cd9a3df49bed31e2e30455228a_JaffaCakes118.exe	sc.exe
PID 2636 wrote to memory of 2580	2636	de1304cd9a3df49bed31e2e30455228a_JaffaCakes118.exe	sc.exe
PID 2636 wrote to memory of 2768	2636	de1304cd9a3df49bed31e2e30455228a_JaffaCakes118.exe	netsh.exe
PID 2636 wrote to memory of 2768	2636	de1304cd9a3df49bed31e2e30455228a_JaffaCakes118.exe	netsh.exe
PID 2636 wrote to memory of 2768	2636	de1304cd9a3df49bed31e2e30455228a_JaffaCakes118.exe	netsh.exe
PID 2636 wrote to memory of 2768	2636	de1304cd9a3df49bed31e2e30455228a_JaffaCakes118.exe	netsh.exe
PID 2712 wrote to memory of 2388	2712	eyualvnt.exe	svchost.exe
PID 2712 wrote to memory of 2388	2712	eyualvnt.exe	svchost.exe
PID 2712 wrote to memory of 2388	2712	eyualvnt.exe	svchost.exe
PID 2712 wrote to memory of 2388	2712	eyualvnt.exe	svchost.exe
PID 2712 wrote to memory of 2388	2712	eyualvnt.exe	svchost.exe
PID 2712 wrote to memory of 2388	2712	eyualvnt.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\de1304cd9a3df49bed31e2e30455228a_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\de1304cd9a3df49bed31e2e30455228a_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2636
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tmybcez\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2748
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\eyualvnt.exe" C:\Windows\SysWOW64\tmybcez\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2736
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create tmybcez binPath= "C:\Windows\SysWOW64\tmybcez\eyualvnt.exe /d\"C:\Users\Admin\AppData\Local\Temp\de1304cd9a3df49bed31e2e30455228a_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2548
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description tmybcez "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2576
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start tmybcez
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2580
- 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:2768

C:\Windows\SysWOW64\tmybcez\eyualvnt.exe
C:\Windows\SysWOW64\tmybcez\eyualvnt.exe /d"C:\Users\Admin\AppData\Local\Temp\de1304cd9a3df49bed31e2e30455228a_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2712
- 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:2388

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\eyualvnt.exe

Filesize
11.9MB

MD5
51f9d0ce811d8e3cb7f733521d735269

SHA1
fdf1d37aaacb3621d5ffa25c617a45d62cf7df8d

SHA256
5915c56d0bee012cd045888260492004142a36fed275f8215e1e9a2f3100f4c6

SHA512
270bff902f4716532f12b8b634a67063f4dbc08f1a0dba7cd4037855b7fd0d7eaecd416a043e97c43257ff01df0c3e1ada4fcc3c690fe5c04e397be80b6f93ef

Download Submit
memory/2388-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2388-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2388-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2388-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2388-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2636-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2636-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2636-8-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/2636-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2636-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2636-1-0x00000000002F0000-0x00000000003F0000-memory.dmp

Filesize
1024KB

Download
memory/2712-15-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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