tofsee | ca7f8f6861626af97a6f68ca54f5744ba6867cc365f14500191c7e0640806137

General

Target

c2496d5d782576cee9b980a4852aa848_JaffaCakes118.exe
Size

13.6MB
MD5

c2496d5d782576cee9b980a4852aa848
SHA1

c2fba555557331a154db390b526b52235aafb12e
SHA256

ca7f8f6861626af97a6f68ca54f5744ba6867cc365f14500191c7e0640806137
SHA512

a5b797846b2f1e36f7652fcb7b8ead141a49fd5407ef7f9978be557d4a64ae0d69386e3ffb0723d1e3a20d5c84568d4cfdef05011ac0f007a46d722cc24373e1
SSDEEP

6144:3ngjLKfnGE+Nj43Gd/50NS0UG4th+d49EOVVVVVVVVVVVVVVVVVVVVVVVVVVVVVn:wiOE+Nj4Q50k0UGIh+dJ

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
4692	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\doxvjvuv\ImagePath = "C:\\Windows\\SysWOW64\\doxvjvuv\\dbljjziy.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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	c2496d5d782576cee9b980a4852aa848_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2652	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4616	dbljjziy.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4616 set thread context of 2652	4616	dbljjziy.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
1772	sc.exe
4072	sc.exe
3776	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
3236	3672	WerFault.exe	82
3580	4616	WerFault.exe	93

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dbljjziy.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c2496d5d782576cee9b980a4852aa848_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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3672 wrote to memory of 4608	3672	c2496d5d782576cee9b980a4852aa848_JaffaCakes118.exe	83
PID 3672 wrote to memory of 4608	3672	c2496d5d782576cee9b980a4852aa848_JaffaCakes118.exe	83
PID 3672 wrote to memory of 4608	3672	c2496d5d782576cee9b980a4852aa848_JaffaCakes118.exe	83
PID 3672 wrote to memory of 2120	3672	c2496d5d782576cee9b980a4852aa848_JaffaCakes118.exe	85
PID 3672 wrote to memory of 2120	3672	c2496d5d782576cee9b980a4852aa848_JaffaCakes118.exe	85
PID 3672 wrote to memory of 2120	3672	c2496d5d782576cee9b980a4852aa848_JaffaCakes118.exe	85
PID 3672 wrote to memory of 1772	3672	c2496d5d782576cee9b980a4852aa848_JaffaCakes118.exe	87
PID 3672 wrote to memory of 1772	3672	c2496d5d782576cee9b980a4852aa848_JaffaCakes118.exe	87
PID 3672 wrote to memory of 1772	3672	c2496d5d782576cee9b980a4852aa848_JaffaCakes118.exe	87
PID 3672 wrote to memory of 4072	3672	c2496d5d782576cee9b980a4852aa848_JaffaCakes118.exe	89
PID 3672 wrote to memory of 4072	3672	c2496d5d782576cee9b980a4852aa848_JaffaCakes118.exe	89
PID 3672 wrote to memory of 4072	3672	c2496d5d782576cee9b980a4852aa848_JaffaCakes118.exe	89
PID 3672 wrote to memory of 3776	3672	c2496d5d782576cee9b980a4852aa848_JaffaCakes118.exe	91
PID 3672 wrote to memory of 3776	3672	c2496d5d782576cee9b980a4852aa848_JaffaCakes118.exe	91
PID 3672 wrote to memory of 3776	3672	c2496d5d782576cee9b980a4852aa848_JaffaCakes118.exe	91
PID 3672 wrote to memory of 4692	3672	c2496d5d782576cee9b980a4852aa848_JaffaCakes118.exe	94
PID 3672 wrote to memory of 4692	3672	c2496d5d782576cee9b980a4852aa848_JaffaCakes118.exe	94
PID 3672 wrote to memory of 4692	3672	c2496d5d782576cee9b980a4852aa848_JaffaCakes118.exe	94
PID 4616 wrote to memory of 2652	4616	dbljjziy.exe	100
PID 4616 wrote to memory of 2652	4616	dbljjziy.exe	100
PID 4616 wrote to memory of 2652	4616	dbljjziy.exe	100
PID 4616 wrote to memory of 2652	4616	dbljjziy.exe	100
PID 4616 wrote to memory of 2652	4616	dbljjziy.exe	100

C:\Users\Admin\AppData\Local\Temp\c2496d5d782576cee9b980a4852aa848_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\c2496d5d782576cee9b980a4852aa848_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3672
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\doxvjvuv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4608
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\dbljjziy.exe" C:\Windows\SysWOW64\doxvjvuv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2120
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create doxvjvuv binPath= "C:\Windows\SysWOW64\doxvjvuv\dbljjziy.exe /d\"C:\Users\Admin\AppData\Local\Temp\c2496d5d782576cee9b980a4852aa848_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1772
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description doxvjvuv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4072
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start doxvjvuv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3776
- 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:4692
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3672 -s 1236
  2⤵
  - Program crash
  PID:3236

C:\Windows\SysWOW64\doxvjvuv\dbljjziy.exe
C:\Windows\SysWOW64\doxvjvuv\dbljjziy.exe /d"C:\Users\Admin\AppData\Local\Temp\c2496d5d782576cee9b980a4852aa848_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4616
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2652
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4616 -s 524
  2⤵
  - Program crash
  PID:3580

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3672 -ip 3672
1⤵
PID:3656

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4616 -ip 4616
1⤵
PID:628

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\dbljjziy.exe

Filesize
14.3MB

MD5
78197bd0df62d26857ce2a4eecd58918

SHA1
481a1edd42b0b2b1810babaaa9b9be44494d9926

SHA256
618c969d3416e0faeb7619acc8c0b7617a45c601119408da34715f1c64303ad9

SHA512
4b146df4fbdeb5197bdb27128090847be7cb02f4a7b001cd5f4a3adcc19b067bab6f7837442b96efea38f904b897ce8d1472067cc0a72450cf1748286172b90b

Download Submit
memory/2652-8-0x0000000000CD0000-0x0000000000CE5000-memory.dmp

Filesize
84KB

Download
memory/2652-15-0x0000000000CD0000-0x0000000000CE5000-memory.dmp

Filesize
84KB

Download
memory/2652-16-0x0000000000CD0000-0x0000000000CE5000-memory.dmp

Filesize
84KB

Download
memory/3672-1-0x0000000001A60000-0x0000000001B60000-memory.dmp

Filesize
1024KB

Download
memory/3672-2-0x0000000001920000-0x0000000001933000-memory.dmp

Filesize
76KB

Download
memory/3672-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3672-12-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3672-11-0x0000000001920000-0x0000000001933000-memory.dmp

Filesize
76KB

Download
memory/3672-10-0x0000000000400000-0x0000000001782000-memory.dmp

Filesize
19.5MB

Download
memory/4616-13-0x0000000000400000-0x0000000001782000-memory.dmp

Filesize
19.5MB

Download
memory/4616-14-0x0000000000400000-0x0000000001782000-memory.dmp

Filesize
19.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads