tofsee | 7ff382e6f4a20363a66f99a385dfbb9782b8cd43eaf17cc23b50335d8c543f5f

General

Target

JaffaCakes118_7ff382e6f4a20363a66f99a385dfbb9782b8cd43eaf17cc23b50335d8c543f5f.exe
Size

286KB
MD5

96b93fb34c985b30f50a7735db22d92b
SHA1

eb448242fffcf293b089256666eee9e3dd0ceeb0
SHA256

7ff382e6f4a20363a66f99a385dfbb9782b8cd43eaf17cc23b50335d8c543f5f
SHA512

07765d1431359a6537fb9f706678eddb0009b693fa6139034e9f5c7b14a32ac0ddedd3c5598287ade40d866a60487f73f65f6aba0ddccdd18757f89096be51bb
SSDEEP

3072:YB0lRYwSYUx98sfyN79u9nlGlkD5WPOrcPI1Ze1+eZORI88EuSYG5RHZFS4Ez:YB6fSYUxEN7lkkPQcPI1NK+buSYG5RG

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
1284	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\jdbkegmh\ImagePath = "C:\\Windows\\SysWOW64\\jdbkegmh\\rykxgtuo.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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	JaffaCakes118_7ff382e6f4a20363a66f99a385dfbb9782b8cd43eaf17cc23b50335d8c543f5f.exe

Deletes itself 1 IoCs

pid	Process
2864	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
548	rykxgtuo.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 548 set thread context of 2864	548	rykxgtuo.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
2004	sc.exe
4296	sc.exe
4820	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
4484	1716	WerFault.exe	82
112	548	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	JaffaCakes118_7ff382e6f4a20363a66f99a385dfbb9782b8cd43eaf17cc23b50335d8c543f5f.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	rykxgtuo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1716 wrote to memory of 1640	1716	JaffaCakes118_7ff382e6f4a20363a66f99a385dfbb9782b8cd43eaf17cc23b50335d8c543f5f.exe	83
PID 1716 wrote to memory of 1640	1716	JaffaCakes118_7ff382e6f4a20363a66f99a385dfbb9782b8cd43eaf17cc23b50335d8c543f5f.exe	83
PID 1716 wrote to memory of 1640	1716	JaffaCakes118_7ff382e6f4a20363a66f99a385dfbb9782b8cd43eaf17cc23b50335d8c543f5f.exe	83
PID 1716 wrote to memory of 1152	1716	JaffaCakes118_7ff382e6f4a20363a66f99a385dfbb9782b8cd43eaf17cc23b50335d8c543f5f.exe	85
PID 1716 wrote to memory of 1152	1716	JaffaCakes118_7ff382e6f4a20363a66f99a385dfbb9782b8cd43eaf17cc23b50335d8c543f5f.exe	85
PID 1716 wrote to memory of 1152	1716	JaffaCakes118_7ff382e6f4a20363a66f99a385dfbb9782b8cd43eaf17cc23b50335d8c543f5f.exe	85
PID 1716 wrote to memory of 2004	1716	JaffaCakes118_7ff382e6f4a20363a66f99a385dfbb9782b8cd43eaf17cc23b50335d8c543f5f.exe	87
PID 1716 wrote to memory of 2004	1716	JaffaCakes118_7ff382e6f4a20363a66f99a385dfbb9782b8cd43eaf17cc23b50335d8c543f5f.exe	87
PID 1716 wrote to memory of 2004	1716	JaffaCakes118_7ff382e6f4a20363a66f99a385dfbb9782b8cd43eaf17cc23b50335d8c543f5f.exe	87
PID 1716 wrote to memory of 4296	1716	JaffaCakes118_7ff382e6f4a20363a66f99a385dfbb9782b8cd43eaf17cc23b50335d8c543f5f.exe	89
PID 1716 wrote to memory of 4296	1716	JaffaCakes118_7ff382e6f4a20363a66f99a385dfbb9782b8cd43eaf17cc23b50335d8c543f5f.exe	89
PID 1716 wrote to memory of 4296	1716	JaffaCakes118_7ff382e6f4a20363a66f99a385dfbb9782b8cd43eaf17cc23b50335d8c543f5f.exe	89
PID 1716 wrote to memory of 4820	1716	JaffaCakes118_7ff382e6f4a20363a66f99a385dfbb9782b8cd43eaf17cc23b50335d8c543f5f.exe	91
PID 1716 wrote to memory of 4820	1716	JaffaCakes118_7ff382e6f4a20363a66f99a385dfbb9782b8cd43eaf17cc23b50335d8c543f5f.exe	91
PID 1716 wrote to memory of 4820	1716	JaffaCakes118_7ff382e6f4a20363a66f99a385dfbb9782b8cd43eaf17cc23b50335d8c543f5f.exe	91
PID 1716 wrote to memory of 1284	1716	JaffaCakes118_7ff382e6f4a20363a66f99a385dfbb9782b8cd43eaf17cc23b50335d8c543f5f.exe	94
PID 1716 wrote to memory of 1284	1716	JaffaCakes118_7ff382e6f4a20363a66f99a385dfbb9782b8cd43eaf17cc23b50335d8c543f5f.exe	94
PID 1716 wrote to memory of 1284	1716	JaffaCakes118_7ff382e6f4a20363a66f99a385dfbb9782b8cd43eaf17cc23b50335d8c543f5f.exe	94
PID 548 wrote to memory of 2864	548	rykxgtuo.exe	100
PID 548 wrote to memory of 2864	548	rykxgtuo.exe	100
PID 548 wrote to memory of 2864	548	rykxgtuo.exe	100
PID 548 wrote to memory of 2864	548	rykxgtuo.exe	100
PID 548 wrote to memory of 2864	548	rykxgtuo.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7ff382e6f4a20363a66f99a385dfbb9782b8cd43eaf17cc23b50335d8c543f5f.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7ff382e6f4a20363a66f99a385dfbb9782b8cd43eaf17cc23b50335d8c543f5f.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1716
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jdbkegmh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1640
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rykxgtuo.exe" C:\Windows\SysWOW64\jdbkegmh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1152
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create jdbkegmh binPath= "C:\Windows\SysWOW64\jdbkegmh\rykxgtuo.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7ff382e6f4a20363a66f99a385dfbb9782b8cd43eaf17cc23b50335d8c543f5f.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2004
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description jdbkegmh "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4296
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start jdbkegmh
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4820
- 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:1284
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1716 -s 1036
  2⤵
  - Program crash
  PID:4484

C:\Windows\SysWOW64\jdbkegmh\rykxgtuo.exe
C:\Windows\SysWOW64\jdbkegmh\rykxgtuo.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7ff382e6f4a20363a66f99a385dfbb9782b8cd43eaf17cc23b50335d8c543f5f.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:548
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2864
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 548 -s 512
  2⤵
  - Program crash
  PID:112

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1716 -ip 1716
1⤵
PID:2424

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 548 -ip 548
1⤵
PID:4468

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\rykxgtuo.exe

Filesize
10.1MB

MD5
03ef3bf901541e33f5977114010838e0

SHA1
ea323811e48368e70e29c4029c4cd5ee40588d52

SHA256
de50d4775a907771f8639c9d6d2a0b61bcec9e238fc60f1efa7c9ac86d882725

SHA512
07a1b920a315a316803c929e0fe4df889a4272c6a25a2ebb79812b3c5b46749724c8ec34242c833ffc2e49e7bd51d3de8ed3da38e6111bfeec3783b1a0958446

Download Submit
memory/548-13-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/548-12-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/548-11-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/548-19-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1716-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1716-2-0x0000000000600000-0x0000000000613000-memory.dmp

Filesize
76KB

Download
memory/1716-8-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1716-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1716-9-0x0000000000600000-0x0000000000613000-memory.dmp

Filesize
76KB

Download
memory/1716-1-0x0000000000690000-0x0000000000790000-memory.dmp

Filesize
1024KB

Download
memory/2864-14-0x0000000000BD0000-0x0000000000BE5000-memory.dmp

Filesize
84KB

Download
memory/2864-16-0x0000000000BD0000-0x0000000000BE5000-memory.dmp

Filesize
84KB

Download
memory/2864-17-0x0000000000BD0000-0x0000000000BE5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads