tofsee | eeffceddf2c04dab253113f235d71f2a6a5fb168a2269c93dce441babc903ec0

General

Target

feb278784fd5fa7005c523d96d0ffd96_JaffaCakes118.exe
Size

13.9MB
MD5

feb278784fd5fa7005c523d96d0ffd96
SHA1

81c3074e1f08781abf9f8306fd5fdf8e1f8b9933
SHA256

eeffceddf2c04dab253113f235d71f2a6a5fb168a2269c93dce441babc903ec0
SHA512

d6bee25ebccbf39a1feb49696ed0efebb0d6e393c257ef285af001cfc5f5fa2e5175fc87c4d884b69e87d5d42d41ce40e0e7dd3344a294a6dea458c3dac72ea5
SSDEEP

6144:WeeKozztQBnWJ4ZF+PAb1nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn:WeeKozCBnuA

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\soermiko = "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

2780 netsh.exe

pid	process
2780	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\soermiko\ImagePath = "C:\\Windows\\SysWOW64\\soermiko\\nzuryxxl.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

3056 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

nzuryxxl.exe

pid process

2852 nzuryxxl.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

nzuryxxl.exe

description pid process target process

PID 2852 set thread context of 3056 2852 nzuryxxl.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

2020 sc.exe
2288 sc.exe
2824 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3056	svchost.exe

pid	process
2852	nzuryxxl.exe

description	pid	process	target process
PID 2852 set thread context of 3056	2852	nzuryxxl.exe	svchost.exe

pid	process
2020	sc.exe
2288	sc.exe
2824	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:

nzuryxxl.exesvchost.execmd.exenetsh.exesc.exesc.exesc.exefeb278784fd5fa7005c523d96d0ffd96_JaffaCakes118.execmd.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nzuryxxl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	feb278784fd5fa7005c523d96d0ffd96_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

feb278784fd5fa7005c523d96d0ffd96_JaffaCakes118.exenzuryxxl.exe

description	pid	process	target process
PID 1292 wrote to memory of 2548	1292	feb278784fd5fa7005c523d96d0ffd96_JaffaCakes118.exe	cmd.exe
PID 1292 wrote to memory of 2548	1292	feb278784fd5fa7005c523d96d0ffd96_JaffaCakes118.exe	cmd.exe
PID 1292 wrote to memory of 2548	1292	feb278784fd5fa7005c523d96d0ffd96_JaffaCakes118.exe	cmd.exe
PID 1292 wrote to memory of 2548	1292	feb278784fd5fa7005c523d96d0ffd96_JaffaCakes118.exe	cmd.exe
PID 1292 wrote to memory of 1744	1292	feb278784fd5fa7005c523d96d0ffd96_JaffaCakes118.exe	cmd.exe
PID 1292 wrote to memory of 1744	1292	feb278784fd5fa7005c523d96d0ffd96_JaffaCakes118.exe	cmd.exe
PID 1292 wrote to memory of 1744	1292	feb278784fd5fa7005c523d96d0ffd96_JaffaCakes118.exe	cmd.exe
PID 1292 wrote to memory of 1744	1292	feb278784fd5fa7005c523d96d0ffd96_JaffaCakes118.exe	cmd.exe
PID 1292 wrote to memory of 2020	1292	feb278784fd5fa7005c523d96d0ffd96_JaffaCakes118.exe	sc.exe
PID 1292 wrote to memory of 2020	1292	feb278784fd5fa7005c523d96d0ffd96_JaffaCakes118.exe	sc.exe
PID 1292 wrote to memory of 2020	1292	feb278784fd5fa7005c523d96d0ffd96_JaffaCakes118.exe	sc.exe
PID 1292 wrote to memory of 2020	1292	feb278784fd5fa7005c523d96d0ffd96_JaffaCakes118.exe	sc.exe
PID 1292 wrote to memory of 2288	1292	feb278784fd5fa7005c523d96d0ffd96_JaffaCakes118.exe	sc.exe
PID 1292 wrote to memory of 2288	1292	feb278784fd5fa7005c523d96d0ffd96_JaffaCakes118.exe	sc.exe
PID 1292 wrote to memory of 2288	1292	feb278784fd5fa7005c523d96d0ffd96_JaffaCakes118.exe	sc.exe
PID 1292 wrote to memory of 2288	1292	feb278784fd5fa7005c523d96d0ffd96_JaffaCakes118.exe	sc.exe
PID 1292 wrote to memory of 2824	1292	feb278784fd5fa7005c523d96d0ffd96_JaffaCakes118.exe	sc.exe
PID 1292 wrote to memory of 2824	1292	feb278784fd5fa7005c523d96d0ffd96_JaffaCakes118.exe	sc.exe
PID 1292 wrote to memory of 2824	1292	feb278784fd5fa7005c523d96d0ffd96_JaffaCakes118.exe	sc.exe
PID 1292 wrote to memory of 2824	1292	feb278784fd5fa7005c523d96d0ffd96_JaffaCakes118.exe	sc.exe
PID 1292 wrote to memory of 2780	1292	feb278784fd5fa7005c523d96d0ffd96_JaffaCakes118.exe	netsh.exe
PID 1292 wrote to memory of 2780	1292	feb278784fd5fa7005c523d96d0ffd96_JaffaCakes118.exe	netsh.exe
PID 1292 wrote to memory of 2780	1292	feb278784fd5fa7005c523d96d0ffd96_JaffaCakes118.exe	netsh.exe
PID 1292 wrote to memory of 2780	1292	feb278784fd5fa7005c523d96d0ffd96_JaffaCakes118.exe	netsh.exe
PID 2852 wrote to memory of 3056	2852	nzuryxxl.exe	svchost.exe
PID 2852 wrote to memory of 3056	2852	nzuryxxl.exe	svchost.exe
PID 2852 wrote to memory of 3056	2852	nzuryxxl.exe	svchost.exe
PID 2852 wrote to memory of 3056	2852	nzuryxxl.exe	svchost.exe
PID 2852 wrote to memory of 3056	2852	nzuryxxl.exe	svchost.exe
PID 2852 wrote to memory of 3056	2852	nzuryxxl.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\feb278784fd5fa7005c523d96d0ffd96_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\feb278784fd5fa7005c523d96d0ffd96_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1292

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\soermiko\
2⤵
- System Location Discovery: System Language Discovery
PID:2548

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nzuryxxl.exe" C:\Windows\SysWOW64\soermiko\
2⤵
- System Location Discovery: System Language Discovery
PID:1744

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create soermiko binPath= "C:\Windows\SysWOW64\soermiko\nzuryxxl.exe /d\"C:\Users\Admin\AppData\Local\Temp\feb278784fd5fa7005c523d96d0ffd96_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:2020

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description soermiko "wifi internet conection"
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:2288

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start soermiko
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:2824

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:2780

C:\Windows\SysWOW64\soermiko\nzuryxxl.exe
C:\Windows\SysWOW64\soermiko\nzuryxxl.exe /d"C:\Users\Admin\AppData\Local\Temp\feb278784fd5fa7005c523d96d0ffd96_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2852

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:3056

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\nzuryxxl.exe

Filesize
11.4MB

MD5
f13ff7b095df388984d7b94026df9b84

SHA1
768fb30268d6f57561fe6ef1db02423b954fa6d3

SHA256
0f6388695e9540f9f6e31361126cdcfcb043df35e9882551e6c1cc5ef716aa80

SHA512
df4d3c9c30b1b8bfefba30c61a049c923afad16480ddf1271b84a66b4ceab671565ea8122619db0996dbd0349cd9cbb9caf0a6f9c879fa3a2a2d95880d3aebb9

Download Submit
memory/1292-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1292-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1292-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1292-8-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download
memory/1292-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1292-1-0x0000000000A10000-0x0000000000B10000-memory.dmp

Filesize
1024KB

Download
memory/2852-17-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download
memory/3056-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3056-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3056-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3056-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3056-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads