tofsee | a8180497b3670425ac073f544fa2bb502f94e064238ead126a73bd0b3683af9b

General

Target

917c560ccf9f6e6c0f05e0e9229edeae_JaffaCakes118.exe
Size

11.1MB
MD5

917c560ccf9f6e6c0f05e0e9229edeae
SHA1

3bf4053d4738ef001bad8159fe0038ec86b6b8be
SHA256

a8180497b3670425ac073f544fa2bb502f94e064238ead126a73bd0b3683af9b
SHA512

f2e058b532775ef9ca8a60d1c8fa8be5fdb905b8cb56e573d5198289d0133a7623a980e9597e14e0ba20ec713c26f9c9c6bf31c64d8df04cc8f50165a833c03b
SSDEEP

196608:BNIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIX:7IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIw

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
2728	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\jmubvrvh\ImagePath = "C:\\Windows\\SysWOW64\\jmubvrvh\\bigrwrft.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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	917c560ccf9f6e6c0f05e0e9229edeae_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
556	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4316	bigrwrft.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4316 set thread context of 556	4316	bigrwrft.exe	106

Launches sc.exe 3 IoCs

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

pid	Process
1552	sc.exe
2612	sc.exe
3976	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
3240	1636	WerFault.exe	82
2232	4316	WerFault.exe	94

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	917c560ccf9f6e6c0f05e0e9229edeae_JaffaCakes118.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	bigrwrft.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1636 wrote to memory of 3840	1636	917c560ccf9f6e6c0f05e0e9229edeae_JaffaCakes118.exe	84
PID 1636 wrote to memory of 3840	1636	917c560ccf9f6e6c0f05e0e9229edeae_JaffaCakes118.exe	84
PID 1636 wrote to memory of 3840	1636	917c560ccf9f6e6c0f05e0e9229edeae_JaffaCakes118.exe	84
PID 1636 wrote to memory of 3464	1636	917c560ccf9f6e6c0f05e0e9229edeae_JaffaCakes118.exe	86
PID 1636 wrote to memory of 3464	1636	917c560ccf9f6e6c0f05e0e9229edeae_JaffaCakes118.exe	86
PID 1636 wrote to memory of 3464	1636	917c560ccf9f6e6c0f05e0e9229edeae_JaffaCakes118.exe	86
PID 1636 wrote to memory of 1552	1636	917c560ccf9f6e6c0f05e0e9229edeae_JaffaCakes118.exe	88
PID 1636 wrote to memory of 1552	1636	917c560ccf9f6e6c0f05e0e9229edeae_JaffaCakes118.exe	88
PID 1636 wrote to memory of 1552	1636	917c560ccf9f6e6c0f05e0e9229edeae_JaffaCakes118.exe	88
PID 1636 wrote to memory of 2612	1636	917c560ccf9f6e6c0f05e0e9229edeae_JaffaCakes118.exe	90
PID 1636 wrote to memory of 2612	1636	917c560ccf9f6e6c0f05e0e9229edeae_JaffaCakes118.exe	90
PID 1636 wrote to memory of 2612	1636	917c560ccf9f6e6c0f05e0e9229edeae_JaffaCakes118.exe	90
PID 1636 wrote to memory of 3976	1636	917c560ccf9f6e6c0f05e0e9229edeae_JaffaCakes118.exe	92
PID 1636 wrote to memory of 3976	1636	917c560ccf9f6e6c0f05e0e9229edeae_JaffaCakes118.exe	92
PID 1636 wrote to memory of 3976	1636	917c560ccf9f6e6c0f05e0e9229edeae_JaffaCakes118.exe	92
PID 1636 wrote to memory of 2728	1636	917c560ccf9f6e6c0f05e0e9229edeae_JaffaCakes118.exe	95
PID 1636 wrote to memory of 2728	1636	917c560ccf9f6e6c0f05e0e9229edeae_JaffaCakes118.exe	95
PID 1636 wrote to memory of 2728	1636	917c560ccf9f6e6c0f05e0e9229edeae_JaffaCakes118.exe	95
PID 4316 wrote to memory of 556	4316	bigrwrft.exe	106
PID 4316 wrote to memory of 556	4316	bigrwrft.exe	106
PID 4316 wrote to memory of 556	4316	bigrwrft.exe	106
PID 4316 wrote to memory of 556	4316	bigrwrft.exe	106
PID 4316 wrote to memory of 556	4316	bigrwrft.exe	106

C:\Users\Admin\AppData\Local\Temp\917c560ccf9f6e6c0f05e0e9229edeae_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\917c560ccf9f6e6c0f05e0e9229edeae_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1636
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jmubvrvh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3840
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bigrwrft.exe" C:\Windows\SysWOW64\jmubvrvh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3464
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create jmubvrvh binPath= "C:\Windows\SysWOW64\jmubvrvh\bigrwrft.exe /d\"C:\Users\Admin\AppData\Local\Temp\917c560ccf9f6e6c0f05e0e9229edeae_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1552
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description jmubvrvh "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2612
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start jmubvrvh
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3976
- 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:2728
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1636 -s 1044
  2⤵
  - Program crash
  PID:3240

C:\Windows\SysWOW64\jmubvrvh\bigrwrft.exe
C:\Windows\SysWOW64\jmubvrvh\bigrwrft.exe /d"C:\Users\Admin\AppData\Local\Temp\917c560ccf9f6e6c0f05e0e9229edeae_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4316
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:556
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4316 -s 508
  2⤵
  - Program crash
  PID:2232

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1636 -ip 1636
1⤵
PID:2136

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4316 -ip 4316
1⤵
PID:4808

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\bigrwrft.exe

Filesize
13.6MB

MD5
9e6206f8fc140d22f08ae560b14bb734

SHA1
287b0aad911f3f5ea5d21531ca5deb9f863bcaa3

SHA256
9008964f9bf171c761bcc2cd80322f6d3165f5837c9ac7651421e89a0e8461fa

SHA512
c7810ed951ce8bef6b37614a47a8b369b0a3c1696ab1876731acafa7d599da05ca1121b99db04d7d30e5e1d43431e998e627e8e9232a182792a917d18dee6192

Download Submit
memory/556-14-0x00000000012D0000-0x00000000012E5000-memory.dmp

Filesize
84KB

Download
memory/556-17-0x00000000012D0000-0x00000000012E5000-memory.dmp

Filesize
84KB

Download
memory/556-16-0x00000000012D0000-0x00000000012E5000-memory.dmp

Filesize
84KB

Download
memory/1636-8-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/1636-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1636-1-0x00000000007A0000-0x00000000008A0000-memory.dmp

Filesize
1024KB

Download
memory/1636-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/1636-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1636-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4316-12-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/4316-11-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/4316-13-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/4316-18-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads