tofsee | 4bffe2b9bd86fef9e9dc978c0b66a5ed3b5fe89fbcbc7fc89e77360be9a6fae8

General

Target

02ee7e829fc9d96448059a4ac56a7d91_JaffaCakes118.exe
Size

10.4MB
MD5

02ee7e829fc9d96448059a4ac56a7d91
SHA1

7685d37ff675095c57a4c0885d4ce83c2399eee6
SHA256

4bffe2b9bd86fef9e9dc978c0b66a5ed3b5fe89fbcbc7fc89e77360be9a6fae8
SHA512

6e0d134641aaa622e19451f37d74085a80c4e76c47aa5e04b45cc0eb30a7832f8d582516d8655c62dc79df5010e55e00fa79b744a2a8826f1220d43c8163baa5
SSDEEP

196608:nmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmD:nmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmD

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\fuuveirs = "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

2112 netsh.exe

pid	process
2112	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\fuuveirs\ImagePath = "C:\\Windows\\SysWOW64\\fuuveirs\\ukfrlxbt.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2596 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

ukfrlxbt.exe

pid process

812 ukfrlxbt.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

ukfrlxbt.exe

description pid process target process

PID 812 set thread context of 2596 812 ukfrlxbt.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

2744 sc.exe
2872 sc.exe
2804 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2596	svchost.exe

pid	process
812	ukfrlxbt.exe

description	pid	process	target process
PID 812 set thread context of 2596	812	ukfrlxbt.exe	svchost.exe

pid	process
2744	sc.exe
2872	sc.exe
2804	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\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:

02ee7e829fc9d96448059a4ac56a7d91_JaffaCakes118.exesc.exeukfrlxbt.execmd.execmd.exesc.exesc.exenetsh.exesvchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	02ee7e829fc9d96448059a4ac56a7d91_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ukfrlxbt.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

02ee7e829fc9d96448059a4ac56a7d91_JaffaCakes118.exeukfrlxbt.exe

description	pid	process	target process
PID 1980 wrote to memory of 2196	1980	02ee7e829fc9d96448059a4ac56a7d91_JaffaCakes118.exe	cmd.exe
PID 1980 wrote to memory of 2196	1980	02ee7e829fc9d96448059a4ac56a7d91_JaffaCakes118.exe	cmd.exe
PID 1980 wrote to memory of 2196	1980	02ee7e829fc9d96448059a4ac56a7d91_JaffaCakes118.exe	cmd.exe
PID 1980 wrote to memory of 2196	1980	02ee7e829fc9d96448059a4ac56a7d91_JaffaCakes118.exe	cmd.exe
PID 1980 wrote to memory of 456	1980	02ee7e829fc9d96448059a4ac56a7d91_JaffaCakes118.exe	cmd.exe
PID 1980 wrote to memory of 456	1980	02ee7e829fc9d96448059a4ac56a7d91_JaffaCakes118.exe	cmd.exe
PID 1980 wrote to memory of 456	1980	02ee7e829fc9d96448059a4ac56a7d91_JaffaCakes118.exe	cmd.exe
PID 1980 wrote to memory of 456	1980	02ee7e829fc9d96448059a4ac56a7d91_JaffaCakes118.exe	cmd.exe
PID 1980 wrote to memory of 2744	1980	02ee7e829fc9d96448059a4ac56a7d91_JaffaCakes118.exe	sc.exe
PID 1980 wrote to memory of 2744	1980	02ee7e829fc9d96448059a4ac56a7d91_JaffaCakes118.exe	sc.exe
PID 1980 wrote to memory of 2744	1980	02ee7e829fc9d96448059a4ac56a7d91_JaffaCakes118.exe	sc.exe
PID 1980 wrote to memory of 2744	1980	02ee7e829fc9d96448059a4ac56a7d91_JaffaCakes118.exe	sc.exe
PID 1980 wrote to memory of 2872	1980	02ee7e829fc9d96448059a4ac56a7d91_JaffaCakes118.exe	sc.exe
PID 1980 wrote to memory of 2872	1980	02ee7e829fc9d96448059a4ac56a7d91_JaffaCakes118.exe	sc.exe
PID 1980 wrote to memory of 2872	1980	02ee7e829fc9d96448059a4ac56a7d91_JaffaCakes118.exe	sc.exe
PID 1980 wrote to memory of 2872	1980	02ee7e829fc9d96448059a4ac56a7d91_JaffaCakes118.exe	sc.exe
PID 1980 wrote to memory of 2804	1980	02ee7e829fc9d96448059a4ac56a7d91_JaffaCakes118.exe	sc.exe
PID 1980 wrote to memory of 2804	1980	02ee7e829fc9d96448059a4ac56a7d91_JaffaCakes118.exe	sc.exe
PID 1980 wrote to memory of 2804	1980	02ee7e829fc9d96448059a4ac56a7d91_JaffaCakes118.exe	sc.exe
PID 1980 wrote to memory of 2804	1980	02ee7e829fc9d96448059a4ac56a7d91_JaffaCakes118.exe	sc.exe
PID 1980 wrote to memory of 2112	1980	02ee7e829fc9d96448059a4ac56a7d91_JaffaCakes118.exe	netsh.exe
PID 1980 wrote to memory of 2112	1980	02ee7e829fc9d96448059a4ac56a7d91_JaffaCakes118.exe	netsh.exe
PID 1980 wrote to memory of 2112	1980	02ee7e829fc9d96448059a4ac56a7d91_JaffaCakes118.exe	netsh.exe
PID 1980 wrote to memory of 2112	1980	02ee7e829fc9d96448059a4ac56a7d91_JaffaCakes118.exe	netsh.exe
PID 812 wrote to memory of 2596	812	ukfrlxbt.exe	svchost.exe
PID 812 wrote to memory of 2596	812	ukfrlxbt.exe	svchost.exe
PID 812 wrote to memory of 2596	812	ukfrlxbt.exe	svchost.exe
PID 812 wrote to memory of 2596	812	ukfrlxbt.exe	svchost.exe
PID 812 wrote to memory of 2596	812	ukfrlxbt.exe	svchost.exe
PID 812 wrote to memory of 2596	812	ukfrlxbt.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\02ee7e829fc9d96448059a4ac56a7d91_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\02ee7e829fc9d96448059a4ac56a7d91_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1980
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fuuveirs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2196
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ukfrlxbt.exe" C:\Windows\SysWOW64\fuuveirs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:456
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fuuveirs binPath= "C:\Windows\SysWOW64\fuuveirs\ukfrlxbt.exe /d\"C:\Users\Admin\AppData\Local\Temp\02ee7e829fc9d96448059a4ac56a7d91_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2744
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fuuveirs "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2872
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fuuveirs
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2804
- 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:2112

C:\Windows\SysWOW64\fuuveirs\ukfrlxbt.exe
C:\Windows\SysWOW64\fuuveirs\ukfrlxbt.exe /d"C:\Users\Admin\AppData\Local\Temp\02ee7e829fc9d96448059a4ac56a7d91_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:812
- 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:2596

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\ukfrlxbt.exe

Filesize
14.4MB

MD5
462a92224127254257618c5173e19f7a

SHA1
dba84a9590fc9311c04bc941a0336d500c56a63d

SHA256
ed0868579d8845058a5c2dfa6b941fed6c043bd33ea5c1f137c5aacf82dbfd96

SHA512
fb1405d463dfd6a9c7a30d7237c2b6359aeeea0b96f4a828dd90c0fc7a112b84b9197281efeea3d9a434629b82f449fc01ad66b0630df85363e3cbc978cc6f0e

Download Submit
memory/812-15-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/1980-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1980-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1980-8-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/1980-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1980-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1980-1-0x0000000000510000-0x0000000000610000-memory.dmp

Filesize
1024KB

Download
memory/2596-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2596-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2596-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2596-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2596-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads