tofsee | a38284b03308b30a89eaec1add9ef1e5580a02c026fd012210ac7977b3da575b

General

Target

JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe
Size

13.6MB
MD5

37c64893aa0f080f5a87ba78097fb143
SHA1

7db7a0ddea0841f10b5f4fe035135f6617850486
SHA256

a38284b03308b30a89eaec1add9ef1e5580a02c026fd012210ac7977b3da575b
SHA512

7cfde51ceec8c684c86eaf42abd3029caa06be0f1989b8aaed29855fae26ae7c5464c37be26cae9ff8a53e7bda2bf572e6ddae0b2376ea4e334416c557f39e39
SSDEEP

6144:ErZQVnJzxj5nP76vk7wQ6udJm1lzvGCUWlnpj:YZ2zxj5nPmRQ6QgjzOCnl

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
4196	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\muvgcgdg\ImagePath = "C:\\Windows\\SysWOW64\\muvgcgdg\\lqmecfr.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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe

Deletes itself 1 IoCs

pid	Process
3716	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3932	lqmecfr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3932 set thread context of 3716	3932	lqmecfr.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
4612	sc.exe
4392	sc.exe
1092	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
1652	2260	WerFault.exe	84
3032	3932	WerFault.exe	96

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_37c64893aa0f080f5a87ba78097fb143.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	lqmecfr.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2260 wrote to memory of 4144	2260	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	85
PID 2260 wrote to memory of 4144	2260	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	85
PID 2260 wrote to memory of 4144	2260	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	85
PID 2260 wrote to memory of 3188	2260	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	87
PID 2260 wrote to memory of 3188	2260	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	87
PID 2260 wrote to memory of 3188	2260	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	87
PID 2260 wrote to memory of 4392	2260	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	89
PID 2260 wrote to memory of 4392	2260	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	89
PID 2260 wrote to memory of 4392	2260	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	89
PID 2260 wrote to memory of 1092	2260	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	91
PID 2260 wrote to memory of 1092	2260	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	91
PID 2260 wrote to memory of 1092	2260	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	91
PID 2260 wrote to memory of 4612	2260	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	94
PID 2260 wrote to memory of 4612	2260	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	94
PID 2260 wrote to memory of 4612	2260	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	94
PID 2260 wrote to memory of 4196	2260	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	97
PID 2260 wrote to memory of 4196	2260	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	97
PID 2260 wrote to memory of 4196	2260	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	97
PID 3932 wrote to memory of 3716	3932	lqmecfr.exe	103
PID 3932 wrote to memory of 3716	3932	lqmecfr.exe	103
PID 3932 wrote to memory of 3716	3932	lqmecfr.exe	103
PID 3932 wrote to memory of 3716	3932	lqmecfr.exe	103
PID 3932 wrote to memory of 3716	3932	lqmecfr.exe	103

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2260
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\muvgcgdg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4144
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\lqmecfr.exe" C:\Windows\SysWOW64\muvgcgdg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3188
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create muvgcgdg binPath= "C:\Windows\SysWOW64\muvgcgdg\lqmecfr.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4392
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description muvgcgdg "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1092
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start muvgcgdg
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4612
- 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:4196
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2260 -s 1040
  2⤵
  - Program crash
  PID:1652

C:\Windows\SysWOW64\muvgcgdg\lqmecfr.exe
C:\Windows\SysWOW64\muvgcgdg\lqmecfr.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3932
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3716
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3932 -s 512
  2⤵
  - Program crash
  PID:3032

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2260 -ip 2260
1⤵
PID:4148

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 3932 -ip 3932
1⤵
PID:4972

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\lqmecfr.exe

Filesize
11.3MB

MD5
220b6a8832440fed055883f107b3daf9

SHA1
e66700836aafc81f38657042e00681a2b8279b82

SHA256
1a11b0d4c296f07bccf55c117bc9e1ee17662fe867a8e7e56cf96d4f52d70ea6

SHA512
0cf008e68a7197517cbbd1d8b2886427c6d86c7ef5370c493d4c409e73e07a1808855d9d33d971751922c79866dc564d43c656aa6a64b3de77c5a030c56b200a

Download Submit
memory/2260-8-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/2260-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2260-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2260-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2260-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2260-1-0x00000000004A0000-0x00000000005A0000-memory.dmp

Filesize
1024KB

Download
memory/3716-14-0x00000000005C0000-0x00000000005D5000-memory.dmp

Filesize
84KB

Download
memory/3716-16-0x00000000005C0000-0x00000000005D5000-memory.dmp

Filesize
84KB

Download
memory/3716-19-0x00000000005C0000-0x00000000005D5000-memory.dmp

Filesize
84KB

Download
memory/3932-12-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/3932-11-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/3932-13-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/3932-18-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads