tofsee | 287407b527d658532ecf954f94cfe295e99a5f991eeeb0818da246fe0bc1df7e

General

Target

JaffaCakes118_287407b527d658532ecf954f94cfe295e99a5f991eeeb0818da246fe0bc1df7e.exe
Size

286KB
MD5

ffa4877224a16ea2832517f4e66a9d4b
SHA1

7e394ecb9588f37c9768ae5ec78ddcdd44ed347f
SHA256

287407b527d658532ecf954f94cfe295e99a5f991eeeb0818da246fe0bc1df7e
SHA512

d5eafdd485c674f7cdd602e588a01d684aa02e496a9acfb6901621cfb657118275275001732344586b82928d0b1a007fdc3c8fad9398a11c2c926b321f5d6e19
SSDEEP

3072:OJnOYAZJIWjRvGQRFiF2B9bWU1v+xb20Ay6lw3ba7EnWJrJ7BfSgYu+i41Pc8aS8:OJORZJdWF2PKAv+oEWoA7fSTxi41iSZ

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
4984	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\cxhzdkgs\ImagePath = "C:\\Windows\\SysWOW64\\cxhzdkgs\\omwuuktj.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_287407b527d658532ecf954f94cfe295e99a5f991eeeb0818da246fe0bc1df7e.exe

Deletes itself 1 IoCs

pid	Process
1144	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4052	omwuuktj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4052 set thread context of 1144	4052	omwuuktj.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
1660	sc.exe
440	sc.exe
4540	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
1352	4880	WerFault.exe	81
1492	4052	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_287407b527d658532ecf954f94cfe295e99a5f991eeeb0818da246fe0bc1df7e.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	omwuuktj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4880 wrote to memory of 2104	4880	JaffaCakes118_287407b527d658532ecf954f94cfe295e99a5f991eeeb0818da246fe0bc1df7e.exe	82
PID 4880 wrote to memory of 2104	4880	JaffaCakes118_287407b527d658532ecf954f94cfe295e99a5f991eeeb0818da246fe0bc1df7e.exe	82
PID 4880 wrote to memory of 2104	4880	JaffaCakes118_287407b527d658532ecf954f94cfe295e99a5f991eeeb0818da246fe0bc1df7e.exe	82
PID 4880 wrote to memory of 4288	4880	JaffaCakes118_287407b527d658532ecf954f94cfe295e99a5f991eeeb0818da246fe0bc1df7e.exe	84
PID 4880 wrote to memory of 4288	4880	JaffaCakes118_287407b527d658532ecf954f94cfe295e99a5f991eeeb0818da246fe0bc1df7e.exe	84
PID 4880 wrote to memory of 4288	4880	JaffaCakes118_287407b527d658532ecf954f94cfe295e99a5f991eeeb0818da246fe0bc1df7e.exe	84
PID 4880 wrote to memory of 4540	4880	JaffaCakes118_287407b527d658532ecf954f94cfe295e99a5f991eeeb0818da246fe0bc1df7e.exe	86
PID 4880 wrote to memory of 4540	4880	JaffaCakes118_287407b527d658532ecf954f94cfe295e99a5f991eeeb0818da246fe0bc1df7e.exe	86
PID 4880 wrote to memory of 4540	4880	JaffaCakes118_287407b527d658532ecf954f94cfe295e99a5f991eeeb0818da246fe0bc1df7e.exe	86
PID 4880 wrote to memory of 1660	4880	JaffaCakes118_287407b527d658532ecf954f94cfe295e99a5f991eeeb0818da246fe0bc1df7e.exe	88
PID 4880 wrote to memory of 1660	4880	JaffaCakes118_287407b527d658532ecf954f94cfe295e99a5f991eeeb0818da246fe0bc1df7e.exe	88
PID 4880 wrote to memory of 1660	4880	JaffaCakes118_287407b527d658532ecf954f94cfe295e99a5f991eeeb0818da246fe0bc1df7e.exe	88
PID 4880 wrote to memory of 440	4880	JaffaCakes118_287407b527d658532ecf954f94cfe295e99a5f991eeeb0818da246fe0bc1df7e.exe	90
PID 4880 wrote to memory of 440	4880	JaffaCakes118_287407b527d658532ecf954f94cfe295e99a5f991eeeb0818da246fe0bc1df7e.exe	90
PID 4880 wrote to memory of 440	4880	JaffaCakes118_287407b527d658532ecf954f94cfe295e99a5f991eeeb0818da246fe0bc1df7e.exe	90
PID 4880 wrote to memory of 4984	4880	JaffaCakes118_287407b527d658532ecf954f94cfe295e99a5f991eeeb0818da246fe0bc1df7e.exe	93
PID 4880 wrote to memory of 4984	4880	JaffaCakes118_287407b527d658532ecf954f94cfe295e99a5f991eeeb0818da246fe0bc1df7e.exe	93
PID 4880 wrote to memory of 4984	4880	JaffaCakes118_287407b527d658532ecf954f94cfe295e99a5f991eeeb0818da246fe0bc1df7e.exe	93
PID 4052 wrote to memory of 1144	4052	omwuuktj.exe	98
PID 4052 wrote to memory of 1144	4052	omwuuktj.exe	98
PID 4052 wrote to memory of 1144	4052	omwuuktj.exe	98
PID 4052 wrote to memory of 1144	4052	omwuuktj.exe	98
PID 4052 wrote to memory of 1144	4052	omwuuktj.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_287407b527d658532ecf954f94cfe295e99a5f991eeeb0818da246fe0bc1df7e.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_287407b527d658532ecf954f94cfe295e99a5f991eeeb0818da246fe0bc1df7e.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4880
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cxhzdkgs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2104
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\omwuuktj.exe" C:\Windows\SysWOW64\cxhzdkgs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4288
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create cxhzdkgs binPath= "C:\Windows\SysWOW64\cxhzdkgs\omwuuktj.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_287407b527d658532ecf954f94cfe295e99a5f991eeeb0818da246fe0bc1df7e.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4540
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description cxhzdkgs "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1660
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start cxhzdkgs
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:440
- 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:4984
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4880 -s 1040
  2⤵
  - Program crash
  PID:1352

C:\Windows\SysWOW64\cxhzdkgs\omwuuktj.exe
C:\Windows\SysWOW64\cxhzdkgs\omwuuktj.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_287407b527d658532ecf954f94cfe295e99a5f991eeeb0818da246fe0bc1df7e.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4052
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1144
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4052 -s 536
  2⤵
  - Program crash
  PID:1492

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4880 -ip 4880
1⤵
PID:4068

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4052 -ip 4052
1⤵
PID:812

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\omwuuktj.exe

Filesize
12.3MB

MD5
dd25e3d99518214c6c677130311de7c4

SHA1
5666ff7f4a492b31f949f1065e961e9616a783d1

SHA256
de31b6707feb678b22ce8f2d523d26945725e1772507ac49554bdb1a046afe57

SHA512
80dad0879fa70155d2dd3e96423f07b0f59bf2341e2be4f7cba3d9a71a92424d65d6adc92741a9372f2c71bfb1d1c754fb5742ed844e462068060786118c7d3f

Download Submit
memory/1144-11-0x00000000007B0000-0x00000000007C5000-memory.dmp

Filesize
84KB

Download
memory/1144-13-0x00000000007B0000-0x00000000007C5000-memory.dmp

Filesize
84KB

Download
memory/1144-14-0x00000000007B0000-0x00000000007C5000-memory.dmp

Filesize
84KB

Download
memory/4052-15-0x0000000000400000-0x0000000002B90000-memory.dmp

Filesize
39.6MB

Download
memory/4880-1-0x0000000002E70000-0x0000000002F70000-memory.dmp

Filesize
1024KB

Download
memory/4880-2-0x0000000002CD0000-0x0000000002CE3000-memory.dmp

Filesize
76KB

Download
memory/4880-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4880-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4880-9-0x0000000002CD0000-0x0000000002CE3000-memory.dmp

Filesize
76KB

Download
memory/4880-8-0x0000000000400000-0x0000000002B90000-memory.dmp

Filesize
39.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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