tofsee | 868141fac9696831f591de2c4c97e7a8b2f48410967beca6be205f442732918b

General

Target

JaffaCakes118_868141fac9696831f591de2c4c97e7a8b2f48410967beca6be205f442732918b.exe
Size

295KB
MD5

049203f243f9131a13939ac0cb01dde9
SHA1

be3918792fcbfaa050ff6b2d61e3645f431deed3
SHA256

868141fac9696831f591de2c4c97e7a8b2f48410967beca6be205f442732918b
SHA512

6a28041c3bff8e44fbcea472042d039efcb74138bf6d9de547c4c4b584509bfc9c41f32e21e826f791dee6ace0c94c5639da3c02bc3ec57ca3decf292b3e00cd
SSDEEP

6144:dRYINfi/6dMxoojfen4W2FQblf3yE92C:dn6IMxooK4W2FQd3pD

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

patmushta.info

parubey.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
5060	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\efrnonvv\ImagePath = "C:\\Windows\\SysWOW64\\efrnonvv\\yrglegdm.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_868141fac9696831f591de2c4c97e7a8b2f48410967beca6be205f442732918b.exe

Deletes itself 1 IoCs

pid	Process
544	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2296	yrglegdm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2296 set thread context of 544	2296	yrglegdm.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
3364	sc.exe
1896	sc.exe
1056	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4932	452	WerFault.exe	83
4472	2296	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_868141fac9696831f591de2c4c97e7a8b2f48410967beca6be205f442732918b.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	yrglegdm.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 452 wrote to memory of 2444	452	JaffaCakes118_868141fac9696831f591de2c4c97e7a8b2f48410967beca6be205f442732918b.exe	84
PID 452 wrote to memory of 2444	452	JaffaCakes118_868141fac9696831f591de2c4c97e7a8b2f48410967beca6be205f442732918b.exe	84
PID 452 wrote to memory of 2444	452	JaffaCakes118_868141fac9696831f591de2c4c97e7a8b2f48410967beca6be205f442732918b.exe	84
PID 452 wrote to memory of 228	452	JaffaCakes118_868141fac9696831f591de2c4c97e7a8b2f48410967beca6be205f442732918b.exe	86
PID 452 wrote to memory of 228	452	JaffaCakes118_868141fac9696831f591de2c4c97e7a8b2f48410967beca6be205f442732918b.exe	86
PID 452 wrote to memory of 228	452	JaffaCakes118_868141fac9696831f591de2c4c97e7a8b2f48410967beca6be205f442732918b.exe	86
PID 452 wrote to memory of 3364	452	JaffaCakes118_868141fac9696831f591de2c4c97e7a8b2f48410967beca6be205f442732918b.exe	88
PID 452 wrote to memory of 3364	452	JaffaCakes118_868141fac9696831f591de2c4c97e7a8b2f48410967beca6be205f442732918b.exe	88
PID 452 wrote to memory of 3364	452	JaffaCakes118_868141fac9696831f591de2c4c97e7a8b2f48410967beca6be205f442732918b.exe	88
PID 452 wrote to memory of 1896	452	JaffaCakes118_868141fac9696831f591de2c4c97e7a8b2f48410967beca6be205f442732918b.exe	90
PID 452 wrote to memory of 1896	452	JaffaCakes118_868141fac9696831f591de2c4c97e7a8b2f48410967beca6be205f442732918b.exe	90
PID 452 wrote to memory of 1896	452	JaffaCakes118_868141fac9696831f591de2c4c97e7a8b2f48410967beca6be205f442732918b.exe	90
PID 452 wrote to memory of 1056	452	JaffaCakes118_868141fac9696831f591de2c4c97e7a8b2f48410967beca6be205f442732918b.exe	92
PID 452 wrote to memory of 1056	452	JaffaCakes118_868141fac9696831f591de2c4c97e7a8b2f48410967beca6be205f442732918b.exe	92
PID 452 wrote to memory of 1056	452	JaffaCakes118_868141fac9696831f591de2c4c97e7a8b2f48410967beca6be205f442732918b.exe	92
PID 452 wrote to memory of 5060	452	JaffaCakes118_868141fac9696831f591de2c4c97e7a8b2f48410967beca6be205f442732918b.exe	95
PID 452 wrote to memory of 5060	452	JaffaCakes118_868141fac9696831f591de2c4c97e7a8b2f48410967beca6be205f442732918b.exe	95
PID 452 wrote to memory of 5060	452	JaffaCakes118_868141fac9696831f591de2c4c97e7a8b2f48410967beca6be205f442732918b.exe	95
PID 2296 wrote to memory of 544	2296	yrglegdm.exe	100
PID 2296 wrote to memory of 544	2296	yrglegdm.exe	100
PID 2296 wrote to memory of 544	2296	yrglegdm.exe	100
PID 2296 wrote to memory of 544	2296	yrglegdm.exe	100
PID 2296 wrote to memory of 544	2296	yrglegdm.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_868141fac9696831f591de2c4c97e7a8b2f48410967beca6be205f442732918b.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_868141fac9696831f591de2c4c97e7a8b2f48410967beca6be205f442732918b.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:452
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\efrnonvv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2444
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\yrglegdm.exe" C:\Windows\SysWOW64\efrnonvv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:228
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create efrnonvv binPath= "C:\Windows\SysWOW64\efrnonvv\yrglegdm.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_868141fac9696831f591de2c4c97e7a8b2f48410967beca6be205f442732918b.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3364
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description efrnonvv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1896
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start efrnonvv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1056
- 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:5060
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 452 -s 640
  2⤵
  - Program crash
  PID:4932

C:\Windows\SysWOW64\efrnonvv\yrglegdm.exe
C:\Windows\SysWOW64\efrnonvv\yrglegdm.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_868141fac9696831f591de2c4c97e7a8b2f48410967beca6be205f442732918b.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2296
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:544
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2296 -s 512
  2⤵
  - Program crash
  PID:4472

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 452 -ip 452
1⤵
PID:2332

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 2296 -ip 2296
1⤵
PID:3392

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\yrglegdm.exe

Filesize
13.6MB

MD5
139e6ff0e9a248b3689d9c0debf2b609

SHA1
9c08c9cc177bd10f7fedabad8637a96a119b2053

SHA256
1a7da6d99ee83f57f8c4107a27fd9fd92f79479b1415ec05ead77fab4d818729

SHA512
bba5d15ece9c79e59860a245b8da2be06236bfa2424cfcb29f4556f1199f7abfba25e14bcc7063b169371cf7df054c2aba174698ecc7028379622ec033a61b34

Download Submit
memory/452-15-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/452-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/452-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/452-13-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/452-1-0x0000000000680000-0x0000000000780000-memory.dmp

Filesize
1024KB

Download
memory/452-14-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/544-11-0x0000000000C10000-0x0000000000C25000-memory.dmp

Filesize
84KB

Download
memory/544-17-0x0000000000C10000-0x0000000000C25000-memory.dmp

Filesize
84KB

Download
memory/544-18-0x0000000000C10000-0x0000000000C25000-memory.dmp

Filesize
84KB

Download
memory/2296-8-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2296-9-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2296-10-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2296-16-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads