tofsee | c0542671b2d5d047231bdbb5bec3f243b31a9b3d94d878714a9a912bf9f4b52a

General

Target

JaffaCakes118_0fa0a275bd7e44e06575f66fcc1893a0.exe
Size

14.7MB
MD5

0fa0a275bd7e44e06575f66fcc1893a0
SHA1

45d17f1dc1888d96a204eb30a1506d068a7cae87
SHA256

c0542671b2d5d047231bdbb5bec3f243b31a9b3d94d878714a9a912bf9f4b52a
SHA512

d8e8cf833f56d0effb2503e1f1069a676c0a2ce9eac77930adf2e4769d7f7e40042bb31b7b335fdfe5a903ebe96bdbee7010135329e693a1eae31613afe3a53c
SSDEEP

24576:5dOmsAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAI:f

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
220	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\qxretqfk\ImagePath = "C:\\Windows\\SysWOW64\\qxretqfk\\ybzuovfp.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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	JaffaCakes118_0fa0a275bd7e44e06575f66fcc1893a0.exe

Deletes itself 1 IoCs

pid	Process
1988	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3488	ybzuovfp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3488 set thread context of 1988	3488	ybzuovfp.exe	95

Launches sc.exe 3 IoCs

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

pid	Process
3200	sc.exe
2040	sc.exe
4052	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

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	ybzuovfp.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	JaffaCakes118_0fa0a275bd7e44e06575f66fcc1893a0.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 640 wrote to memory of 1084	640	JaffaCakes118_0fa0a275bd7e44e06575f66fcc1893a0.exe	82
PID 640 wrote to memory of 1084	640	JaffaCakes118_0fa0a275bd7e44e06575f66fcc1893a0.exe	82
PID 640 wrote to memory of 1084	640	JaffaCakes118_0fa0a275bd7e44e06575f66fcc1893a0.exe	82
PID 640 wrote to memory of 1832	640	JaffaCakes118_0fa0a275bd7e44e06575f66fcc1893a0.exe	84
PID 640 wrote to memory of 1832	640	JaffaCakes118_0fa0a275bd7e44e06575f66fcc1893a0.exe	84
PID 640 wrote to memory of 1832	640	JaffaCakes118_0fa0a275bd7e44e06575f66fcc1893a0.exe	84
PID 640 wrote to memory of 4052	640	JaffaCakes118_0fa0a275bd7e44e06575f66fcc1893a0.exe	86
PID 640 wrote to memory of 4052	640	JaffaCakes118_0fa0a275bd7e44e06575f66fcc1893a0.exe	86
PID 640 wrote to memory of 4052	640	JaffaCakes118_0fa0a275bd7e44e06575f66fcc1893a0.exe	86
PID 640 wrote to memory of 3200	640	JaffaCakes118_0fa0a275bd7e44e06575f66fcc1893a0.exe	88
PID 640 wrote to memory of 3200	640	JaffaCakes118_0fa0a275bd7e44e06575f66fcc1893a0.exe	88
PID 640 wrote to memory of 3200	640	JaffaCakes118_0fa0a275bd7e44e06575f66fcc1893a0.exe	88
PID 640 wrote to memory of 2040	640	JaffaCakes118_0fa0a275bd7e44e06575f66fcc1893a0.exe	90
PID 640 wrote to memory of 2040	640	JaffaCakes118_0fa0a275bd7e44e06575f66fcc1893a0.exe	90
PID 640 wrote to memory of 2040	640	JaffaCakes118_0fa0a275bd7e44e06575f66fcc1893a0.exe	90
PID 640 wrote to memory of 220	640	JaffaCakes118_0fa0a275bd7e44e06575f66fcc1893a0.exe	93
PID 640 wrote to memory of 220	640	JaffaCakes118_0fa0a275bd7e44e06575f66fcc1893a0.exe	93
PID 640 wrote to memory of 220	640	JaffaCakes118_0fa0a275bd7e44e06575f66fcc1893a0.exe	93
PID 3488 wrote to memory of 1988	3488	ybzuovfp.exe	95
PID 3488 wrote to memory of 1988	3488	ybzuovfp.exe	95
PID 3488 wrote to memory of 1988	3488	ybzuovfp.exe	95
PID 3488 wrote to memory of 1988	3488	ybzuovfp.exe	95
PID 3488 wrote to memory of 1988	3488	ybzuovfp.exe	95

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0fa0a275bd7e44e06575f66fcc1893a0.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0fa0a275bd7e44e06575f66fcc1893a0.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:640
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qxretqfk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1084
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ybzuovfp.exe" C:\Windows\SysWOW64\qxretqfk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1832
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create qxretqfk binPath= "C:\Windows\SysWOW64\qxretqfk\ybzuovfp.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0fa0a275bd7e44e06575f66fcc1893a0.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4052
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description qxretqfk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3200
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start qxretqfk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2040
- 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:220

C:\Windows\SysWOW64\qxretqfk\ybzuovfp.exe
C:\Windows\SysWOW64\qxretqfk\ybzuovfp.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0fa0a275bd7e44e06575f66fcc1893a0.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3488
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1988

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\ybzuovfp.exe

Filesize
12.1MB

MD5
08d0bf43d4ee552c009c5f5fb4cfbf32

SHA1
84ec82ebedc0a5b8e1642200ba9c1c3c22faa3ec

SHA256
b321147a62830218b05bad9bb88dc6f80a2168409427436c187ff9d805258139

SHA512
b5744008dec1e6b57b5aa395f16e77ae3033ce52b85a04c29bd2abddf4761406ba1b245b495f030c92e737a56703f5e372c2ef55de4b5d2c7dc3bd677e188ae6

Download Submit
memory/640-8-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/640-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/640-1-0x0000000000680000-0x0000000000780000-memory.dmp

Filesize
1024KB

Download
memory/640-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/640-9-0x0000000000650000-0x0000000000663000-memory.dmp

Filesize
76KB

Download
memory/640-2-0x0000000000650000-0x0000000000663000-memory.dmp

Filesize
76KB

Download
memory/1988-16-0x0000000000190000-0x00000000001A5000-memory.dmp

Filesize
84KB

Download
memory/1988-14-0x0000000000190000-0x00000000001A5000-memory.dmp

Filesize
84KB

Download
memory/1988-19-0x0000000000190000-0x00000000001A5000-memory.dmp

Filesize
84KB

Download
memory/3488-13-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/3488-12-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/3488-11-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/3488-18-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads