tofsee | 76497357675e0c88783153ee6af68abc7957862e1a007764594ce564efdb7ba1

General

Target

2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe
Size

11.6MB
MD5

2b99688c1f763affe8a85e2cc71221d9
SHA1

0c9c739ce47c42a34b9c6d2d35d86b1f4e932d70
SHA256

76497357675e0c88783153ee6af68abc7957862e1a007764594ce564efdb7ba1
SHA512

e0265c40c128168c94ffa6f37e76c545ea84445c3fb54e1522a85eb0772f5bc78084868534c8406565cc39a6d020e7b9c3fcf9ab49a4f99bb2a9c3b31643fd24
SSDEEP

24576:nBYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYP:n

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

Processes:

netsh.exe

pid process

1968 netsh.exe

pid	process
1968	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\zxmuktuo\ImagePath = "C:\\Windows\\SysWOW64\\zxmuktuo\\jhwicyjz.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

Processes:

2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1432 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

jhwicyjz.exe

pid process

3832 jhwicyjz.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

jhwicyjz.exe

description pid process target process

PID 3832 set thread context of 1432 3832 jhwicyjz.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

2732 sc.exe
2020 sc.exe
2364 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1432	svchost.exe

pid	process
3832	jhwicyjz.exe

description	pid	process	target process
PID 3832 set thread context of 1432	3832	jhwicyjz.exe	svchost.exe

pid	process
2732	sc.exe
2020	sc.exe
2364	sc.exe

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

Processes:

netsh.exe

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

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

1220 1436 WerFault.exe 2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe
440 3832 WerFault.exe jhwicyjz.exe

pid	pid_target	process	target process
1220	1436	WerFault.exe	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe
440	3832	WerFault.exe	jhwicyjz.exe

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

Processes:

sc.exenetsh.exejhwicyjz.exesvchost.exe2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.execmd.execmd.exesc.exesc.exe

description	ioc	process
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	jhwicyjz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exejhwicyjz.exe

description	pid	process	target process
PID 1436 wrote to memory of 2412	1436	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	cmd.exe
PID 1436 wrote to memory of 2412	1436	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	cmd.exe
PID 1436 wrote to memory of 2412	1436	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	cmd.exe
PID 1436 wrote to memory of 1996	1436	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	cmd.exe
PID 1436 wrote to memory of 1996	1436	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	cmd.exe
PID 1436 wrote to memory of 1996	1436	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	cmd.exe
PID 1436 wrote to memory of 2364	1436	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	sc.exe
PID 1436 wrote to memory of 2364	1436	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	sc.exe
PID 1436 wrote to memory of 2364	1436	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	sc.exe
PID 1436 wrote to memory of 2732	1436	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	sc.exe
PID 1436 wrote to memory of 2732	1436	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	sc.exe
PID 1436 wrote to memory of 2732	1436	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	sc.exe
PID 1436 wrote to memory of 2020	1436	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	sc.exe
PID 1436 wrote to memory of 2020	1436	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	sc.exe
PID 1436 wrote to memory of 2020	1436	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	sc.exe
PID 1436 wrote to memory of 1968	1436	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	netsh.exe
PID 1436 wrote to memory of 1968	1436	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	netsh.exe
PID 1436 wrote to memory of 1968	1436	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	netsh.exe
PID 3832 wrote to memory of 1432	3832	jhwicyjz.exe	svchost.exe
PID 3832 wrote to memory of 1432	3832	jhwicyjz.exe	svchost.exe
PID 3832 wrote to memory of 1432	3832	jhwicyjz.exe	svchost.exe
PID 3832 wrote to memory of 1432	3832	jhwicyjz.exe	svchost.exe
PID 3832 wrote to memory of 1432	3832	jhwicyjz.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1436

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zxmuktuo\
2⤵
- System Location Discovery: System Language Discovery
PID:2412

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jhwicyjz.exe" C:\Windows\SysWOW64\zxmuktuo\
2⤵
- System Location Discovery: System Language Discovery
PID:1996

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create zxmuktuo binPath= "C:\Windows\SysWOW64\zxmuktuo\jhwicyjz.exe /d\"C:\Users\Admin\AppData\Local\Temp\2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:2364

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description zxmuktuo "wifi internet conection"
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:2732

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start zxmuktuo
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:2020

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:1968

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1436 -s 1236
2⤵
- Program crash
PID:1220

C:\Windows\SysWOW64\zxmuktuo\jhwicyjz.exe
C:\Windows\SysWOW64\zxmuktuo\jhwicyjz.exe /d"C:\Users\Admin\AppData\Local\Temp\2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3832

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
- System Location Discovery: System Language Discovery
PID:1432

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3832 -s 228
2⤵
- Program crash
PID:440

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 1436 -ip 1436
1⤵
PID:8

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3832 -ip 3832
1⤵
PID:1652

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\jhwicyjz.exe

Filesize
11.6MB

MD5
2da29517cdc24a762755aa673153e36a

SHA1
128dee8503a8bcf363ffaec2808bf5a546721aab

SHA256
6eac13e92ca807ee185d639ecfbc6a4c7cab3b1e1dd649e58a1e0502515e333a

SHA512
ee58a4acb3b5799703b3be3e6e5c932172c94fc31171d57900fadf90c13237ab9c6116088178cde56343deaa9208bd84ad77583b2ade7e848de9d83790b226da

Download Submit
memory/1432-14-0x0000000000B70000-0x0000000000B85000-memory.dmp

Filesize
84KB

Download
memory/1432-17-0x0000000000B70000-0x0000000000B85000-memory.dmp

Filesize
84KB

Download
memory/1432-16-0x0000000000B70000-0x0000000000B85000-memory.dmp

Filesize
84KB

Download
memory/1436-9-0x00000000021F0000-0x0000000002203000-memory.dmp

Filesize
76KB

Download
memory/1436-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1436-1-0x0000000000630000-0x0000000000730000-memory.dmp

Filesize
1024KB

Download
memory/1436-8-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1436-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1436-2-0x00000000021F0000-0x0000000002203000-memory.dmp

Filesize
76KB

Download
memory/3832-11-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/3832-13-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/3832-12-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/3832-18-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads