tofsee | 00423b5dc446d975260c85ace9a92f27398430fd56bbb3d42e190d281de8d954

General

Target

JaffaCakes118_f97ac5a687cc94db960df62fb910a74a.exe
Size

11.6MB
MD5

f97ac5a687cc94db960df62fb910a74a
SHA1

24b5c7775506327081ea3ed0093c62d938dd50e4
SHA256

00423b5dc446d975260c85ace9a92f27398430fd56bbb3d42e190d281de8d954
SHA512

ab81fd40d42ad8dd102b48906d5fba078360001cb300743b8e90849bc38d22f40302b6e26ee5d45f0b6bf1bd082e0293adee78ed3e21668c3c55b014d9746c0b
SSDEEP

196608:QPHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHn:Q

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
4216	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\xzgnblzk\ImagePath = "C:\\Windows\\SysWOW64\\xzgnblzk\\jmkfzgqa.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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	JaffaCakes118_f97ac5a687cc94db960df62fb910a74a.exe

Deletes itself 1 IoCs

pid	Process
2432	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1324	jmkfzgqa.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1324 set thread context of 2432	1324	jmkfzgqa.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
3156	sc.exe
3964	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 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
3364	4792	WerFault.exe	81
4776	1324	WerFault.exe	92

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jmkfzgqa.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_f97ac5a687cc94db960df62fb910a74a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4792 wrote to memory of 4180	4792	JaffaCakes118_f97ac5a687cc94db960df62fb910a74a.exe	82
PID 4792 wrote to memory of 4180	4792	JaffaCakes118_f97ac5a687cc94db960df62fb910a74a.exe	82
PID 4792 wrote to memory of 4180	4792	JaffaCakes118_f97ac5a687cc94db960df62fb910a74a.exe	82
PID 4792 wrote to memory of 536	4792	JaffaCakes118_f97ac5a687cc94db960df62fb910a74a.exe	84
PID 4792 wrote to memory of 536	4792	JaffaCakes118_f97ac5a687cc94db960df62fb910a74a.exe	84
PID 4792 wrote to memory of 536	4792	JaffaCakes118_f97ac5a687cc94db960df62fb910a74a.exe	84
PID 4792 wrote to memory of 3156	4792	JaffaCakes118_f97ac5a687cc94db960df62fb910a74a.exe	86
PID 4792 wrote to memory of 3156	4792	JaffaCakes118_f97ac5a687cc94db960df62fb910a74a.exe	86
PID 4792 wrote to memory of 3156	4792	JaffaCakes118_f97ac5a687cc94db960df62fb910a74a.exe	86
PID 4792 wrote to memory of 3964	4792	JaffaCakes118_f97ac5a687cc94db960df62fb910a74a.exe	88
PID 4792 wrote to memory of 3964	4792	JaffaCakes118_f97ac5a687cc94db960df62fb910a74a.exe	88
PID 4792 wrote to memory of 3964	4792	JaffaCakes118_f97ac5a687cc94db960df62fb910a74a.exe	88
PID 4792 wrote to memory of 4820	4792	JaffaCakes118_f97ac5a687cc94db960df62fb910a74a.exe	90
PID 4792 wrote to memory of 4820	4792	JaffaCakes118_f97ac5a687cc94db960df62fb910a74a.exe	90
PID 4792 wrote to memory of 4820	4792	JaffaCakes118_f97ac5a687cc94db960df62fb910a74a.exe	90
PID 4792 wrote to memory of 4216	4792	JaffaCakes118_f97ac5a687cc94db960df62fb910a74a.exe	93
PID 4792 wrote to memory of 4216	4792	JaffaCakes118_f97ac5a687cc94db960df62fb910a74a.exe	93
PID 4792 wrote to memory of 4216	4792	JaffaCakes118_f97ac5a687cc94db960df62fb910a74a.exe	93
PID 1324 wrote to memory of 2432	1324	jmkfzgqa.exe	98
PID 1324 wrote to memory of 2432	1324	jmkfzgqa.exe	98
PID 1324 wrote to memory of 2432	1324	jmkfzgqa.exe	98
PID 1324 wrote to memory of 2432	1324	jmkfzgqa.exe	98
PID 1324 wrote to memory of 2432	1324	jmkfzgqa.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f97ac5a687cc94db960df62fb910a74a.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f97ac5a687cc94db960df62fb910a74a.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4792
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xzgnblzk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4180
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jmkfzgqa.exe" C:\Windows\SysWOW64\xzgnblzk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:536
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create xzgnblzk binPath= "C:\Windows\SysWOW64\xzgnblzk\jmkfzgqa.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f97ac5a687cc94db960df62fb910a74a.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3156
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description xzgnblzk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3964
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start xzgnblzk
  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:4216
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4792 -s 1044
  2⤵
  - Program crash
  PID:3364

C:\Windows\SysWOW64\xzgnblzk\jmkfzgqa.exe
C:\Windows\SysWOW64\xzgnblzk\jmkfzgqa.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f97ac5a687cc94db960df62fb910a74a.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1324
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2432
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1324 -s 516
  2⤵
  - Program crash
  PID:4776

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4792 -ip 4792
1⤵
PID:876

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 1324 -ip 1324
1⤵
PID:1932

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\jmkfzgqa.exe

Filesize
10.7MB

MD5
a1bfedfc42d94d8376cf91b42bd26fde

SHA1
5c9bd9ba26da7d2158024405191be8a715f21bb3

SHA256
487990ee8103e43f9babb043773dd5add5ef91bb9d67ebef7abb5009a1eb5c06

SHA512
23667529a8dfe8aa2e3d52ae0c02e3a921a25e646522028a41460dbb5009d7c09066cbd90ef956031827434e60a4350bbc5bce2564f69e7d9d38c5a7a94ff547

Download Submit
memory/1324-11-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/1324-16-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/1324-15-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/2432-14-0x0000000000B30000-0x0000000000B45000-memory.dmp

Filesize
84KB

Download
memory/2432-12-0x0000000000B30000-0x0000000000B45000-memory.dmp

Filesize
84KB

Download
memory/2432-17-0x0000000000B30000-0x0000000000B45000-memory.dmp

Filesize
84KB

Download
memory/4792-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4792-8-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/4792-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4792-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4792-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4792-1-0x0000000000870000-0x0000000000970000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads