tofsee | 551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0

General

Target

JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe
Size

285KB
MD5

61f8be3ccdfa263ce084dc04f6aa0437
SHA1

f961423e1a77221b573f79c43c9a521caad6854f
SHA256

551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0
SHA512

879cf63a785814eb6644c0416bd0f5cf626368a0e2011bd83d6aeb1671dbccf14cdf4645f62db38974d60ef99f56fced8236f9716c0706f1644039539925c90a
SSDEEP

3072:q33Z+4VHtyHf1czTaE1/83RjhJN9O9S20kePH7+QtxQ640P7F1SLDVG7m5:23YMkf1c/L1/8Bj30nKi+77oDVG

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
952	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\kslhajrf\ImagePath = "C:\\Windows\\SysWOW64\\kslhajrf\\pbnvvgvd.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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe

Deletes itself 1 IoCs

pid	Process
4060	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3420	pbnvvgvd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3420 set thread context of 4060	3420	pbnvvgvd.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
756	sc.exe
384	sc.exe
1988	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2256	1640	WerFault.exe	82
2580	3420	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	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.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	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	pbnvvgvd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1640 wrote to memory of 4008	1640	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	83
PID 1640 wrote to memory of 4008	1640	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	83
PID 1640 wrote to memory of 4008	1640	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	83
PID 1640 wrote to memory of 1948	1640	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	85
PID 1640 wrote to memory of 1948	1640	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	85
PID 1640 wrote to memory of 1948	1640	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	85
PID 1640 wrote to memory of 384	1640	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	87
PID 1640 wrote to memory of 384	1640	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	87
PID 1640 wrote to memory of 384	1640	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	87
PID 1640 wrote to memory of 1988	1640	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	89
PID 1640 wrote to memory of 1988	1640	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	89
PID 1640 wrote to memory of 1988	1640	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	89
PID 1640 wrote to memory of 756	1640	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	92
PID 1640 wrote to memory of 756	1640	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	92
PID 1640 wrote to memory of 756	1640	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	92
PID 1640 wrote to memory of 952	1640	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	95
PID 1640 wrote to memory of 952	1640	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	95
PID 1640 wrote to memory of 952	1640	JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe	95
PID 3420 wrote to memory of 4060	3420	pbnvvgvd.exe	101
PID 3420 wrote to memory of 4060	3420	pbnvvgvd.exe	101
PID 3420 wrote to memory of 4060	3420	pbnvvgvd.exe	101
PID 3420 wrote to memory of 4060	3420	pbnvvgvd.exe	101
PID 3420 wrote to memory of 4060	3420	pbnvvgvd.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1640
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kslhajrf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4008
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pbnvvgvd.exe" C:\Windows\SysWOW64\kslhajrf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1948
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create kslhajrf binPath= "C:\Windows\SysWOW64\kslhajrf\pbnvvgvd.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:384
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description kslhajrf "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1988
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start kslhajrf
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:756
- 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:952
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1640 -s 1044
  2⤵
  - Program crash
  PID:2256

C:\Windows\SysWOW64\kslhajrf\pbnvvgvd.exe
C:\Windows\SysWOW64\kslhajrf\pbnvvgvd.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_551d239fc97916f66f22400de1cd409af3a6d22e4e4413b47d6f56c709acffa0.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3420
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4060
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 508
  2⤵
  - Program crash
  PID:2580

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1640 -ip 1640
1⤵
PID:2720

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3420 -ip 3420
1⤵
PID:5016

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\pbnvvgvd.exe

Filesize
10.9MB

MD5
274d9b156f6968c3517e347be75ada25

SHA1
a568291094789c989cafd84d5c5a6747357a088a

SHA256
9dbe97c913a087bffb756fc84a53e424d5b97e65038eb1d3818f46510342436c

SHA512
3f6eeaba5973a13bb05b1c8f7fa6872db954142db5e9499a6552f4aa329972257ee3fa513780e2edb729394a48828462251d6bf1124607eb7c68d7674f3fa901

Download Submit
memory/1640-1-0x0000000002E20000-0x0000000002F20000-memory.dmp

Filesize
1024KB

Download
memory/1640-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/1640-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1640-12-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1640-11-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/1640-9-0x0000000000400000-0x0000000002B90000-memory.dmp

Filesize
39.6MB

Download
memory/3420-13-0x0000000000400000-0x0000000002B90000-memory.dmp

Filesize
39.6MB

Download
memory/4060-8-0x0000000000640000-0x0000000000655000-memory.dmp

Filesize
84KB

Download
memory/4060-14-0x0000000000640000-0x0000000000655000-memory.dmp

Filesize
84KB

Download
memory/4060-15-0x0000000000640000-0x0000000000655000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads