tofsee | de2c494713e4ca980f0f55c5d183def1f1a68c698eacd6627778b704566fce14

General

Target

72b6657e5633ebdcd2b4b49b034ab0d8_JaffaCakes118.exe
Size

11.1MB
MD5

72b6657e5633ebdcd2b4b49b034ab0d8
SHA1

c8b0081902a005b88b18319e7488d81ab7a4d348
SHA256

de2c494713e4ca980f0f55c5d183def1f1a68c698eacd6627778b704566fce14
SHA512

ee9777886dad70c6d34aad658ab799668db3441ace3507ab1f686b44123206a7e8c14c7788e2260533af2eb50550c1120adaff69b886e9d75d5d92df751f6aa9
SSDEEP

24576:RPTYeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeO:RP

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
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
3972	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\sknwuful\ImagePath = "C:\\Windows\\SysWOW64\\sknwuful\\vplrcmek.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	72b6657e5633ebdcd2b4b49b034ab0d8_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
1544	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
972	vplrcmek.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 972 set thread context of 1544	972	vplrcmek.exe	107

Launches sc.exe 3 IoCs

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

pid	Process
3460	sc.exe
3080	sc.exe
1176	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
392	2328	WerFault.exe	83
1212	972	WerFault.exe	99

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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	72b6657e5633ebdcd2b4b49b034ab0d8_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	vplrcmek.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2328 wrote to memory of 1204	2328	72b6657e5633ebdcd2b4b49b034ab0d8_JaffaCakes118.exe	87
PID 2328 wrote to memory of 1204	2328	72b6657e5633ebdcd2b4b49b034ab0d8_JaffaCakes118.exe	87
PID 2328 wrote to memory of 1204	2328	72b6657e5633ebdcd2b4b49b034ab0d8_JaffaCakes118.exe	87
PID 2328 wrote to memory of 1688	2328	72b6657e5633ebdcd2b4b49b034ab0d8_JaffaCakes118.exe	89
PID 2328 wrote to memory of 1688	2328	72b6657e5633ebdcd2b4b49b034ab0d8_JaffaCakes118.exe	89
PID 2328 wrote to memory of 1688	2328	72b6657e5633ebdcd2b4b49b034ab0d8_JaffaCakes118.exe	89
PID 2328 wrote to memory of 1176	2328	72b6657e5633ebdcd2b4b49b034ab0d8_JaffaCakes118.exe	91
PID 2328 wrote to memory of 1176	2328	72b6657e5633ebdcd2b4b49b034ab0d8_JaffaCakes118.exe	91
PID 2328 wrote to memory of 1176	2328	72b6657e5633ebdcd2b4b49b034ab0d8_JaffaCakes118.exe	91
PID 2328 wrote to memory of 3460	2328	72b6657e5633ebdcd2b4b49b034ab0d8_JaffaCakes118.exe	95
PID 2328 wrote to memory of 3460	2328	72b6657e5633ebdcd2b4b49b034ab0d8_JaffaCakes118.exe	95
PID 2328 wrote to memory of 3460	2328	72b6657e5633ebdcd2b4b49b034ab0d8_JaffaCakes118.exe	95
PID 2328 wrote to memory of 3080	2328	72b6657e5633ebdcd2b4b49b034ab0d8_JaffaCakes118.exe	97
PID 2328 wrote to memory of 3080	2328	72b6657e5633ebdcd2b4b49b034ab0d8_JaffaCakes118.exe	97
PID 2328 wrote to memory of 3080	2328	72b6657e5633ebdcd2b4b49b034ab0d8_JaffaCakes118.exe	97
PID 2328 wrote to memory of 3972	2328	72b6657e5633ebdcd2b4b49b034ab0d8_JaffaCakes118.exe	102
PID 2328 wrote to memory of 3972	2328	72b6657e5633ebdcd2b4b49b034ab0d8_JaffaCakes118.exe	102
PID 2328 wrote to memory of 3972	2328	72b6657e5633ebdcd2b4b49b034ab0d8_JaffaCakes118.exe	102
PID 972 wrote to memory of 1544	972	vplrcmek.exe	107
PID 972 wrote to memory of 1544	972	vplrcmek.exe	107
PID 972 wrote to memory of 1544	972	vplrcmek.exe	107
PID 972 wrote to memory of 1544	972	vplrcmek.exe	107
PID 972 wrote to memory of 1544	972	vplrcmek.exe	107

C:\Users\Admin\AppData\Local\Temp\72b6657e5633ebdcd2b4b49b034ab0d8_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\72b6657e5633ebdcd2b4b49b034ab0d8_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2328
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\sknwuful\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1204
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vplrcmek.exe" C:\Windows\SysWOW64\sknwuful\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1688
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create sknwuful binPath= "C:\Windows\SysWOW64\sknwuful\vplrcmek.exe /d\"C:\Users\Admin\AppData\Local\Temp\72b6657e5633ebdcd2b4b49b034ab0d8_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1176
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description sknwuful "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3460
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start sknwuful
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3080
- 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:3972
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2328 -s 1040
  2⤵
  - Program crash
  PID:392

C:\Windows\SysWOW64\sknwuful\vplrcmek.exe
C:\Windows\SysWOW64\sknwuful\vplrcmek.exe /d"C:\Users\Admin\AppData\Local\Temp\72b6657e5633ebdcd2b4b49b034ab0d8_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:972
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1544
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 972 -s 512
  2⤵
  - Program crash
  PID:1212

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 2328 -ip 2328
1⤵
PID:3604

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 972 -ip 972
1⤵
PID:3656

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\vplrcmek.exe

Filesize
11.5MB

MD5
638a1ba397d7c462089dc51613032264

SHA1
3fa04512643e83277629864ff5cf305013c43b9f

SHA256
7ed4f89d65627075abb740fbd676710dc5fc535113131a52762d6f45b085f965

SHA512
366f12b5f0fb3b2eb360976039ed67241f76fd53913bd2d657e0053c05b022175ea5aa0021bc524ee253b56ad528b2b8ea1069d92b433b14a052d6bbed21de91

Download Submit
memory/972-13-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/972-11-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/972-12-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/972-18-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1544-14-0x0000000000410000-0x0000000000425000-memory.dmp

Filesize
84KB

Download
memory/1544-16-0x0000000000410000-0x0000000000425000-memory.dmp

Filesize
84KB

Download
memory/1544-17-0x0000000000410000-0x0000000000425000-memory.dmp

Filesize
84KB

Download
memory/2328-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2328-2-0x00000000021F0000-0x0000000002203000-memory.dmp

Filesize
76KB

Download
memory/2328-8-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2328-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2328-9-0x00000000021F0000-0x0000000002203000-memory.dmp

Filesize
76KB

Download
memory/2328-1-0x00000000006F0000-0x00000000007F0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads