tofsee | 8b375f518fff7dbc1a19a8a088f0b29607a4edd6341f5edf32fc17d2aca29c20

General

Target

JaffaCakes118_39a4223734b3e0de32868512cbb0caea.exe
Size

12.2MB
MD5

39a4223734b3e0de32868512cbb0caea
SHA1

9a37a54a9c3746471928a4256c2de833430e429d
SHA256

8b375f518fff7dbc1a19a8a088f0b29607a4edd6341f5edf32fc17d2aca29c20
SHA512

b9a1aca79b459e58f2a9cdf0757a3c344a4e8145da057601f44e7699ee81a5bb1f801105ead8f15f79eaa49666347ae923882552a065d42a2ae82e97540b5f82
SSDEEP

98304:nUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUE:

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
4748	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\dlmazqbq\ImagePath = "C:\\Windows\\SysWOW64\\dlmazqbq\\ecmkkajz.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	JaffaCakes118_39a4223734b3e0de32868512cbb0caea.exe

Deletes itself 1 IoCs

pid	Process
2200	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1416	ecmkkajz.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1416 set thread context of 2200	1416	ecmkkajz.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
2096	sc.exe
1160	sc.exe
1232	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
2192	868	WerFault.exe	82
3280	1416	WerFault.exe	94

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	sc.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ecmkkajz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_39a4223734b3e0de32868512cbb0caea.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 868 wrote to memory of 4132	868	JaffaCakes118_39a4223734b3e0de32868512cbb0caea.exe	83
PID 868 wrote to memory of 4132	868	JaffaCakes118_39a4223734b3e0de32868512cbb0caea.exe	83
PID 868 wrote to memory of 4132	868	JaffaCakes118_39a4223734b3e0de32868512cbb0caea.exe	83
PID 868 wrote to memory of 5104	868	JaffaCakes118_39a4223734b3e0de32868512cbb0caea.exe	86
PID 868 wrote to memory of 5104	868	JaffaCakes118_39a4223734b3e0de32868512cbb0caea.exe	86
PID 868 wrote to memory of 5104	868	JaffaCakes118_39a4223734b3e0de32868512cbb0caea.exe	86
PID 868 wrote to memory of 2096	868	JaffaCakes118_39a4223734b3e0de32868512cbb0caea.exe	88
PID 868 wrote to memory of 2096	868	JaffaCakes118_39a4223734b3e0de32868512cbb0caea.exe	88
PID 868 wrote to memory of 2096	868	JaffaCakes118_39a4223734b3e0de32868512cbb0caea.exe	88
PID 868 wrote to memory of 1160	868	JaffaCakes118_39a4223734b3e0de32868512cbb0caea.exe	90
PID 868 wrote to memory of 1160	868	JaffaCakes118_39a4223734b3e0de32868512cbb0caea.exe	90
PID 868 wrote to memory of 1160	868	JaffaCakes118_39a4223734b3e0de32868512cbb0caea.exe	90
PID 868 wrote to memory of 1232	868	JaffaCakes118_39a4223734b3e0de32868512cbb0caea.exe	92
PID 868 wrote to memory of 1232	868	JaffaCakes118_39a4223734b3e0de32868512cbb0caea.exe	92
PID 868 wrote to memory of 1232	868	JaffaCakes118_39a4223734b3e0de32868512cbb0caea.exe	92
PID 868 wrote to memory of 4748	868	JaffaCakes118_39a4223734b3e0de32868512cbb0caea.exe	95
PID 868 wrote to memory of 4748	868	JaffaCakes118_39a4223734b3e0de32868512cbb0caea.exe	95
PID 868 wrote to memory of 4748	868	JaffaCakes118_39a4223734b3e0de32868512cbb0caea.exe	95
PID 1416 wrote to memory of 2200	1416	ecmkkajz.exe	101
PID 1416 wrote to memory of 2200	1416	ecmkkajz.exe	101
PID 1416 wrote to memory of 2200	1416	ecmkkajz.exe	101
PID 1416 wrote to memory of 2200	1416	ecmkkajz.exe	101
PID 1416 wrote to memory of 2200	1416	ecmkkajz.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_39a4223734b3e0de32868512cbb0caea.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_39a4223734b3e0de32868512cbb0caea.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:868
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dlmazqbq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4132
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ecmkkajz.exe" C:\Windows\SysWOW64\dlmazqbq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5104
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create dlmazqbq binPath= "C:\Windows\SysWOW64\dlmazqbq\ecmkkajz.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_39a4223734b3e0de32868512cbb0caea.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2096
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description dlmazqbq "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1160
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start dlmazqbq
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1232
- 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:4748
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 868 -s 1184
  2⤵
  - Program crash
  PID:2192

C:\Windows\SysWOW64\dlmazqbq\ecmkkajz.exe
C:\Windows\SysWOW64\dlmazqbq\ecmkkajz.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_39a4223734b3e0de32868512cbb0caea.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1416
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2200
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1416 -s 512
  2⤵
  - Program crash
  PID:3280

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 868 -ip 868
1⤵
PID:3664

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1416 -ip 1416
1⤵
PID:2428

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\ecmkkajz.exe

Filesize
12.2MB

MD5
54cac8aee22e7217ff2bd97e491208b4

SHA1
e08da69589156d6bf1c94cfffdde567ea23c036b

SHA256
b19275007cc3909814c7e384b50acfd6cf85a929e520ca1c112247f2302c7416

SHA512
d318e26afe91cb79f5bdaadd422777b8e8b9d6235f8d497d409ade58369a4c591e109d7872b65e24832d3501a121a5efd17c62c019d46ec95d1223c5d0a34067

Download Submit
memory/868-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/868-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/868-1-0x00000000005C0000-0x00000000006C0000-memory.dmp

Filesize
1024KB

Download
memory/868-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/868-8-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/868-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/1416-12-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/1416-11-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/1416-13-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/1416-19-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/2200-14-0x0000000000D10000-0x0000000000D25000-memory.dmp

Filesize
84KB

Download
memory/2200-16-0x0000000000D10000-0x0000000000D25000-memory.dmp

Filesize
84KB

Download
memory/2200-17-0x0000000000D10000-0x0000000000D25000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads