tofsee | cddfcbbe5656cb29b2976fb1267fecf1c605b9d6752f6449ce8c204c3b994169

General

Target

JaffaCakes118_bcabc295b45c3d62fbc279122262e7e5.exe
Size

14.2MB
MD5

bcabc295b45c3d62fbc279122262e7e5
SHA1

b93934170d87fd73182a57d312e1363c35b7923c
SHA256

cddfcbbe5656cb29b2976fb1267fecf1c605b9d6752f6449ce8c204c3b994169
SHA512

ad55d782f55d87309219bfcd4a02bd9f44ad682c9f4bf4002c4011ba8aebd87a47df5b9b3664c783061304c3171b9a539bf6a4e45e724243290f05da105b0413
SSDEEP

98304:6vCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC6:6

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
2592	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\fegvqdes\ImagePath = "C:\\Windows\\SysWOW64\\fegvqdes\\ovtejesg.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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	JaffaCakes118_bcabc295b45c3d62fbc279122262e7e5.exe

Deletes itself 1 IoCs

pid	Process
4508	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3800	ovtejesg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3800 set thread context of 4508	3800	ovtejesg.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
1044	sc.exe
2744	sc.exe
3264	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
3492	2804	WerFault.exe	81
4984	3800	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_bcabc295b45c3d62fbc279122262e7e5.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ovtejesg.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2804 wrote to memory of 2512	2804	JaffaCakes118_bcabc295b45c3d62fbc279122262e7e5.exe	82
PID 2804 wrote to memory of 2512	2804	JaffaCakes118_bcabc295b45c3d62fbc279122262e7e5.exe	82
PID 2804 wrote to memory of 2512	2804	JaffaCakes118_bcabc295b45c3d62fbc279122262e7e5.exe	82
PID 2804 wrote to memory of 4408	2804	JaffaCakes118_bcabc295b45c3d62fbc279122262e7e5.exe	84
PID 2804 wrote to memory of 4408	2804	JaffaCakes118_bcabc295b45c3d62fbc279122262e7e5.exe	84
PID 2804 wrote to memory of 4408	2804	JaffaCakes118_bcabc295b45c3d62fbc279122262e7e5.exe	84
PID 2804 wrote to memory of 1044	2804	JaffaCakes118_bcabc295b45c3d62fbc279122262e7e5.exe	86
PID 2804 wrote to memory of 1044	2804	JaffaCakes118_bcabc295b45c3d62fbc279122262e7e5.exe	86
PID 2804 wrote to memory of 1044	2804	JaffaCakes118_bcabc295b45c3d62fbc279122262e7e5.exe	86
PID 2804 wrote to memory of 2744	2804	JaffaCakes118_bcabc295b45c3d62fbc279122262e7e5.exe	88
PID 2804 wrote to memory of 2744	2804	JaffaCakes118_bcabc295b45c3d62fbc279122262e7e5.exe	88
PID 2804 wrote to memory of 2744	2804	JaffaCakes118_bcabc295b45c3d62fbc279122262e7e5.exe	88
PID 2804 wrote to memory of 3264	2804	JaffaCakes118_bcabc295b45c3d62fbc279122262e7e5.exe	90
PID 2804 wrote to memory of 3264	2804	JaffaCakes118_bcabc295b45c3d62fbc279122262e7e5.exe	90
PID 2804 wrote to memory of 3264	2804	JaffaCakes118_bcabc295b45c3d62fbc279122262e7e5.exe	90
PID 2804 wrote to memory of 2592	2804	JaffaCakes118_bcabc295b45c3d62fbc279122262e7e5.exe	93
PID 2804 wrote to memory of 2592	2804	JaffaCakes118_bcabc295b45c3d62fbc279122262e7e5.exe	93
PID 2804 wrote to memory of 2592	2804	JaffaCakes118_bcabc295b45c3d62fbc279122262e7e5.exe	93
PID 3800 wrote to memory of 4508	3800	ovtejesg.exe	98
PID 3800 wrote to memory of 4508	3800	ovtejesg.exe	98
PID 3800 wrote to memory of 4508	3800	ovtejesg.exe	98
PID 3800 wrote to memory of 4508	3800	ovtejesg.exe	98
PID 3800 wrote to memory of 4508	3800	ovtejesg.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bcabc295b45c3d62fbc279122262e7e5.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bcabc295b45c3d62fbc279122262e7e5.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2804
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fegvqdes\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2512
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ovtejesg.exe" C:\Windows\SysWOW64\fegvqdes\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4408
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fegvqdes binPath= "C:\Windows\SysWOW64\fegvqdes\ovtejesg.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bcabc295b45c3d62fbc279122262e7e5.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1044
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fegvqdes "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2744
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fegvqdes
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3264
- 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:2592
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2804 -s 1240
  2⤵
  - Program crash
  PID:3492

C:\Windows\SysWOW64\fegvqdes\ovtejesg.exe
C:\Windows\SysWOW64\fegvqdes\ovtejesg.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bcabc295b45c3d62fbc279122262e7e5.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3800
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4508
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3800 -s 560
  2⤵
  - Program crash
  PID:4984

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2804 -ip 2804
1⤵
PID:3436

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 3800 -ip 3800
1⤵
PID:232

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\ovtejesg.exe

Filesize
12.5MB

MD5
62e8612c32a8dcb3150a0cdc6ad72dcc

SHA1
04974e15e89d8654654dbfd912db1c385702e725

SHA256
906db8b1e40d4aab145a2d20f3af5c30b1a7231576b9567f831fd6d49c57a68b

SHA512
ea391080bf753bcba0004815832257e212636615b09a1ce109926c73028ea36763d6fe70913492602235d65614f2f849239f44583480e7239313cc3f722caf85

Download Submit
memory/2804-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2804-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2804-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2804-8-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/2804-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2804-1-0x0000000000670000-0x0000000000770000-memory.dmp

Filesize
1024KB

Download
memory/3800-11-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/3800-12-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/3800-13-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/3800-18-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/4508-14-0x0000000000DA0000-0x0000000000DB5000-memory.dmp

Filesize
84KB

Download
memory/4508-16-0x0000000000DA0000-0x0000000000DB5000-memory.dmp

Filesize
84KB

Download
memory/4508-17-0x0000000000DA0000-0x0000000000DB5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads