tofsee | 12e184a9efc0897d7bec4c00b64355a5364faac11514f5fb6d2a8e3c2851c1b5

General

Target

JaffaCakes118_7b59084371e878c62a6b09ccf4bd82ff.exe
Size

14.1MB
MD5

7b59084371e878c62a6b09ccf4bd82ff
SHA1

57f2a5f62fde2b607d43de19d84958b6935a814a
SHA256

12e184a9efc0897d7bec4c00b64355a5364faac11514f5fb6d2a8e3c2851c1b5
SHA512

811b9ae6bea68ed73fd0251dcc756fffd95c0e891310978cd262f08667ae04ed811ee3b5f140a260b3b109770cea713b1d0907e43252c8af631dbc3033897309
SSDEEP

98304:6wfDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDj:6w

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
3216	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\qozchfod\ImagePath = "C:\\Windows\\SysWOW64\\qozchfod\\mcxjdptl.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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	JaffaCakes118_7b59084371e878c62a6b09ccf4bd82ff.exe

Deletes itself 1 IoCs

pid	Process
2232	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2784	mcxjdptl.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2784 set thread context of 2232	2784	mcxjdptl.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
3684	sc.exe
3580	sc.exe
860	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 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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1928	4256	WerFault.exe	81
1364	2784	WerFault.exe	92

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mcxjdptl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_7b59084371e878c62a6b09ccf4bd82ff.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4256 wrote to memory of 1864	4256	JaffaCakes118_7b59084371e878c62a6b09ccf4bd82ff.exe	82
PID 4256 wrote to memory of 1864	4256	JaffaCakes118_7b59084371e878c62a6b09ccf4bd82ff.exe	82
PID 4256 wrote to memory of 1864	4256	JaffaCakes118_7b59084371e878c62a6b09ccf4bd82ff.exe	82
PID 4256 wrote to memory of 4464	4256	JaffaCakes118_7b59084371e878c62a6b09ccf4bd82ff.exe	84
PID 4256 wrote to memory of 4464	4256	JaffaCakes118_7b59084371e878c62a6b09ccf4bd82ff.exe	84
PID 4256 wrote to memory of 4464	4256	JaffaCakes118_7b59084371e878c62a6b09ccf4bd82ff.exe	84
PID 4256 wrote to memory of 860	4256	JaffaCakes118_7b59084371e878c62a6b09ccf4bd82ff.exe	86
PID 4256 wrote to memory of 860	4256	JaffaCakes118_7b59084371e878c62a6b09ccf4bd82ff.exe	86
PID 4256 wrote to memory of 860	4256	JaffaCakes118_7b59084371e878c62a6b09ccf4bd82ff.exe	86
PID 4256 wrote to memory of 3684	4256	JaffaCakes118_7b59084371e878c62a6b09ccf4bd82ff.exe	88
PID 4256 wrote to memory of 3684	4256	JaffaCakes118_7b59084371e878c62a6b09ccf4bd82ff.exe	88
PID 4256 wrote to memory of 3684	4256	JaffaCakes118_7b59084371e878c62a6b09ccf4bd82ff.exe	88
PID 4256 wrote to memory of 3580	4256	JaffaCakes118_7b59084371e878c62a6b09ccf4bd82ff.exe	90
PID 4256 wrote to memory of 3580	4256	JaffaCakes118_7b59084371e878c62a6b09ccf4bd82ff.exe	90
PID 4256 wrote to memory of 3580	4256	JaffaCakes118_7b59084371e878c62a6b09ccf4bd82ff.exe	90
PID 4256 wrote to memory of 3216	4256	JaffaCakes118_7b59084371e878c62a6b09ccf4bd82ff.exe	93
PID 4256 wrote to memory of 3216	4256	JaffaCakes118_7b59084371e878c62a6b09ccf4bd82ff.exe	93
PID 4256 wrote to memory of 3216	4256	JaffaCakes118_7b59084371e878c62a6b09ccf4bd82ff.exe	93
PID 2784 wrote to memory of 2232	2784	mcxjdptl.exe	98
PID 2784 wrote to memory of 2232	2784	mcxjdptl.exe	98
PID 2784 wrote to memory of 2232	2784	mcxjdptl.exe	98
PID 2784 wrote to memory of 2232	2784	mcxjdptl.exe	98
PID 2784 wrote to memory of 2232	2784	mcxjdptl.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7b59084371e878c62a6b09ccf4bd82ff.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7b59084371e878c62a6b09ccf4bd82ff.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4256
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qozchfod\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1864
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mcxjdptl.exe" C:\Windows\SysWOW64\qozchfod\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4464
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create qozchfod binPath= "C:\Windows\SysWOW64\qozchfod\mcxjdptl.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7b59084371e878c62a6b09ccf4bd82ff.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:860
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description qozchfod "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3684
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start qozchfod
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3580
- 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:3216
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4256 -s 1028
  2⤵
  - Program crash
  PID:1928

C:\Windows\SysWOW64\qozchfod\mcxjdptl.exe
C:\Windows\SysWOW64\qozchfod\mcxjdptl.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7b59084371e878c62a6b09ccf4bd82ff.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2784
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2232
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2784 -s 516
  2⤵
  - Program crash
  PID:1364

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4256 -ip 4256
1⤵
PID:1696

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 2784 -ip 2784
1⤵
PID:5028

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
14.7MB

MD5
1bc00e189fe700a79fa5938bf0348349

SHA1
9cf831a9aaac61e23f81e361a0cae37bab1a98ef

SHA256
a4a4b9e6818b6855ebcdc0f9841a93bc918c484d9c431e6319076acc2a7d0e06

SHA512
7d469d9672bb3d97fbd7164a95220ded6d613894c9dacf5dab666995e8b0466a92a2bcae647e03dee4a0d3e286068fbf3a30180f841e4251f7978ba04bb5d0b8

Download Submit
memory/2232-14-0x00000000001E0000-0x00000000001F5000-memory.dmp

Filesize
84KB

Download
memory/2232-17-0x00000000001E0000-0x00000000001F5000-memory.dmp

Filesize
84KB

Download
memory/2232-16-0x00000000001E0000-0x00000000001F5000-memory.dmp

Filesize
84KB

Download
memory/2784-13-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/2784-12-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/2784-11-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/2784-18-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/4256-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4256-8-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/4256-1-0x0000000000740000-0x0000000000840000-memory.dmp

Filesize
1024KB

Download
memory/4256-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4256-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4256-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads