tofsee | 9a6b44b5b8536a0cc1a4f7f996ca0ccf0524c591b382a0c1e6be630d172ad009

General

Target

JaffaCakes118_80886a1c834f57b2fb57d166d1b31430.exe
Size

14.2MB
MD5

80886a1c834f57b2fb57d166d1b31430
SHA1

fe991ee5b5ee0678b4be9bfbbe6bded33041dd2b
SHA256

9a6b44b5b8536a0cc1a4f7f996ca0ccf0524c591b382a0c1e6be630d172ad009
SHA512

4e74a405389201795953be1a2dd8ce399891060da079bd52d23eb7c1340b12b9c49385c4ee0866090558a41548f9383060d4891ef1b8a9b90a98e9e0e8b783dc
SSDEEP

6144:OM0Em6Qk5N3Sccccccccccccccccccccccccccccccccccccccccccccccccccc3:IEma

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

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
3008	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\dwtjrnav\ImagePath = "C:\\Windows\\SysWOW64\\dwtjrnav\\gacztpze.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_80886a1c834f57b2fb57d166d1b31430.exe

Deletes itself 1 IoCs

pid	Process
720	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1472	gacztpze.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1472 set thread context of 720	1472	gacztpze.exe	93

Launches sc.exe 3 IoCs

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

pid	Process
4848	sc.exe
4672	sc.exe
888	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

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	gacztpze.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	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	JaffaCakes118_80886a1c834f57b2fb57d166d1b31430.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3980 wrote to memory of 4152	3980	JaffaCakes118_80886a1c834f57b2fb57d166d1b31430.exe	82
PID 3980 wrote to memory of 4152	3980	JaffaCakes118_80886a1c834f57b2fb57d166d1b31430.exe	82
PID 3980 wrote to memory of 4152	3980	JaffaCakes118_80886a1c834f57b2fb57d166d1b31430.exe	82
PID 3980 wrote to memory of 228	3980	JaffaCakes118_80886a1c834f57b2fb57d166d1b31430.exe	84
PID 3980 wrote to memory of 228	3980	JaffaCakes118_80886a1c834f57b2fb57d166d1b31430.exe	84
PID 3980 wrote to memory of 228	3980	JaffaCakes118_80886a1c834f57b2fb57d166d1b31430.exe	84
PID 3980 wrote to memory of 4848	3980	JaffaCakes118_80886a1c834f57b2fb57d166d1b31430.exe	86
PID 3980 wrote to memory of 4848	3980	JaffaCakes118_80886a1c834f57b2fb57d166d1b31430.exe	86
PID 3980 wrote to memory of 4848	3980	JaffaCakes118_80886a1c834f57b2fb57d166d1b31430.exe	86
PID 3980 wrote to memory of 4672	3980	JaffaCakes118_80886a1c834f57b2fb57d166d1b31430.exe	88
PID 3980 wrote to memory of 4672	3980	JaffaCakes118_80886a1c834f57b2fb57d166d1b31430.exe	88
PID 3980 wrote to memory of 4672	3980	JaffaCakes118_80886a1c834f57b2fb57d166d1b31430.exe	88
PID 3980 wrote to memory of 888	3980	JaffaCakes118_80886a1c834f57b2fb57d166d1b31430.exe	90
PID 3980 wrote to memory of 888	3980	JaffaCakes118_80886a1c834f57b2fb57d166d1b31430.exe	90
PID 3980 wrote to memory of 888	3980	JaffaCakes118_80886a1c834f57b2fb57d166d1b31430.exe	90
PID 1472 wrote to memory of 720	1472	gacztpze.exe	93
PID 1472 wrote to memory of 720	1472	gacztpze.exe	93
PID 1472 wrote to memory of 720	1472	gacztpze.exe	93
PID 1472 wrote to memory of 720	1472	gacztpze.exe	93
PID 1472 wrote to memory of 720	1472	gacztpze.exe	93
PID 3980 wrote to memory of 3008	3980	JaffaCakes118_80886a1c834f57b2fb57d166d1b31430.exe	94
PID 3980 wrote to memory of 3008	3980	JaffaCakes118_80886a1c834f57b2fb57d166d1b31430.exe	94
PID 3980 wrote to memory of 3008	3980	JaffaCakes118_80886a1c834f57b2fb57d166d1b31430.exe	94

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_80886a1c834f57b2fb57d166d1b31430.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_80886a1c834f57b2fb57d166d1b31430.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3980
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dwtjrnav\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4152
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gacztpze.exe" C:\Windows\SysWOW64\dwtjrnav\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:228
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create dwtjrnav binPath= "C:\Windows\SysWOW64\dwtjrnav\gacztpze.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_80886a1c834f57b2fb57d166d1b31430.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4848
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description dwtjrnav "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4672
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start dwtjrnav
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:888
- 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:3008

C:\Windows\SysWOW64\dwtjrnav\gacztpze.exe
C:\Windows\SysWOW64\dwtjrnav\gacztpze.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_80886a1c834f57b2fb57d166d1b31430.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1472
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:720

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\gacztpze.exe

Filesize
10.4MB

MD5
9f73d74e3c34d1effc60dc5d1fed6a02

SHA1
969b2fe1d978d4b6c647e357e537216c38248065

SHA256
36f6c66443e2cded6b63487fb5a73c9a50bdc0f414e7b53cb252331dc767f46b

SHA512
dda861c526bf411004c500f3425e76891bfb00d1d814ef9bc0b4a3e25815c8e3081eb5b406a45742a76077e415925e4cb08876ae00937a82d7d8c064e53f1434

Download Submit
memory/720-8-0x0000000000760000-0x0000000000775000-memory.dmp

Filesize
84KB

Download
memory/720-11-0x0000000000760000-0x0000000000775000-memory.dmp

Filesize
84KB

Download
memory/720-14-0x0000000000760000-0x0000000000775000-memory.dmp

Filesize
84KB

Download
memory/720-15-0x0000000000760000-0x0000000000775000-memory.dmp

Filesize
84KB

Download
memory/720-16-0x0000000000760000-0x0000000000775000-memory.dmp

Filesize
84KB

Download
memory/1472-7-0x0000000000890000-0x0000000000891000-memory.dmp

Filesize
4KB

Download
memory/1472-12-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3980-0-0x00000000009C0000-0x00000000009C1000-memory.dmp

Filesize
4KB

Download
memory/3980-1-0x00000000009D0000-0x00000000009D1000-memory.dmp

Filesize
4KB

Download
memory/3980-2-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3980-13-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads