tofsee | 7088b73392c72a88308e348907c034e92dd88dab5b61e5da21ecce88d0263def

General

Target

fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe
Size

10.9MB
MD5

fd0860d3ec11ef7451e8db1b6d87573f
SHA1

a823015d683d6604ed49ec2ac13134fb6895d6ba
SHA256

7088b73392c72a88308e348907c034e92dd88dab5b61e5da21ecce88d0263def
SHA512

b7b677cc8fc1061bbe0bbf74d2231de0c9ceea96a4d620ee951759b9aa8a6155a08adae337c90dacd2da159947ce4a2ed42146bd322f19ea2b344b99ca8bfbc6
SSDEEP

24576:fMOfbSPNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN1: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
Tofsee family
tofsee
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

pid	Process
1300	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\lzjkuube\ImagePath = "C:\\Windows\\SysWOW64\\lzjkuube\\ykfcjiiw.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2464	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3984	ykfcjiiw.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3984 set thread context of 2464	3984	ykfcjiiw.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
3408	sc.exe
3240	sc.exe
2656	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

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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2320	5012	WerFault.exe	82
3520	3984	WerFault.exe	93

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ykfcjiiw.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 5012 wrote to memory of 1476	5012	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	83
PID 5012 wrote to memory of 1476	5012	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	83
PID 5012 wrote to memory of 1476	5012	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	83
PID 5012 wrote to memory of 4688	5012	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	85
PID 5012 wrote to memory of 4688	5012	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	85
PID 5012 wrote to memory of 4688	5012	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	85
PID 5012 wrote to memory of 3408	5012	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	87
PID 5012 wrote to memory of 3408	5012	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	87
PID 5012 wrote to memory of 3408	5012	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	87
PID 5012 wrote to memory of 3240	5012	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	89
PID 5012 wrote to memory of 3240	5012	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	89
PID 5012 wrote to memory of 3240	5012	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	89
PID 5012 wrote to memory of 2656	5012	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	91
PID 5012 wrote to memory of 2656	5012	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	91
PID 5012 wrote to memory of 2656	5012	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	91
PID 5012 wrote to memory of 1300	5012	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	94
PID 5012 wrote to memory of 1300	5012	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	94
PID 5012 wrote to memory of 1300	5012	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	94
PID 3984 wrote to memory of 2464	3984	ykfcjiiw.exe	100
PID 3984 wrote to memory of 2464	3984	ykfcjiiw.exe	100
PID 3984 wrote to memory of 2464	3984	ykfcjiiw.exe	100
PID 3984 wrote to memory of 2464	3984	ykfcjiiw.exe	100
PID 3984 wrote to memory of 2464	3984	ykfcjiiw.exe	100

C:\Users\Admin\AppData\Local\Temp\fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5012
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lzjkuube\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1476
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ykfcjiiw.exe" C:\Windows\SysWOW64\lzjkuube\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4688
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create lzjkuube binPath= "C:\Windows\SysWOW64\lzjkuube\ykfcjiiw.exe /d\"C:\Users\Admin\AppData\Local\Temp\fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3408
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description lzjkuube "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3240
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start lzjkuube
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2656
- 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:1300
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5012 -s 892
  2⤵
  - Program crash
  PID:2320

C:\Windows\SysWOW64\lzjkuube\ykfcjiiw.exe
C:\Windows\SysWOW64\lzjkuube\ykfcjiiw.exe /d"C:\Users\Admin\AppData\Local\Temp\fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3984
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2464
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3984 -s 536
  2⤵
  - Program crash
  PID:3520

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 5012 -ip 5012
1⤵
PID:2768

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 3984 -ip 3984
1⤵
PID:544

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

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

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\ykfcjiiw.exe

Filesize
12.8MB

MD5
2b17c6ced6bd9e0f5ce6e0138cbe3dee

SHA1
dcdcc248e218c65a2ae08697dad343d928578ba4

SHA256
4fecdd54d0b9add0b0aab03baa0fdd4c7707659d23a79e8802579e88a862b8fd

SHA512
d1612ed2808a43403dbbc5588683fe3dd277556d0628cf50192a54790140be0dbc59e0d607e7bc9dc4413d41be86eeeff6d25040091434289a6883305b7093eb

Download Submit
memory/2464-8-0x0000000000880000-0x0000000000895000-memory.dmp

Filesize
84KB

Download
memory/2464-14-0x0000000000880000-0x0000000000895000-memory.dmp

Filesize
84KB

Download
memory/2464-15-0x0000000000880000-0x0000000000895000-memory.dmp

Filesize
84KB

Download
memory/3984-13-0x0000000000400000-0x0000000002B8F000-memory.dmp

Filesize
39.6MB

Download
memory/5012-1-0x0000000002DB0000-0x0000000002EB0000-memory.dmp

Filesize
1024KB

Download
memory/5012-2-0x0000000002D00000-0x0000000002D13000-memory.dmp

Filesize
76KB

Download
memory/5012-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5012-12-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5012-11-0x0000000002D00000-0x0000000002D13000-memory.dmp

Filesize
76KB

Download
memory/5012-10-0x0000000000400000-0x0000000002B8F000-memory.dmp

Filesize
39.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads