tofsee | 499d65ae848034b47448e62a1f54b52a7f5210836e009ef02f44a7ede4a46edd

General

Target

JaffaCakes118_499d65ae848034b47448e62a1f54b52a7f5210836e009ef02f44a7ede4a46edd.exe
Size

285KB
MD5

c7c81a19e0a0682869c98da734e55b25
SHA1

d2e58799c4814e11beb7bf23b594ddfdb654bbfe
SHA256

499d65ae848034b47448e62a1f54b52a7f5210836e009ef02f44a7ede4a46edd
SHA512

7e9059ce89b52ec5fc16c75fc3db559751ad29f288452228670068db3063628e8828e06bebc3ed3d6ad5ce43400a7f4a50294aa535b5064d6b8acd1612ec2d13
SSDEEP

6144:QKFbjoZovivz4hNuzbgwu6L7ITsqSigaTwVf:DbjoZMlhNunnn7s

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.ru

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
1208	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\fdsrwybe\ImagePath = "C:\\Windows\\SysWOW64\\fdsrwybe\\dwhxifyr.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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	JaffaCakes118_499d65ae848034b47448e62a1f54b52a7f5210836e009ef02f44a7ede4a46edd.exe

Deletes itself 1 IoCs

pid	Process
32	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2700	dwhxifyr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2700 set thread context of 32	2700	dwhxifyr.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
476	sc.exe
2396	sc.exe
2728	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
3500	3208	WerFault.exe	81
2948	2700	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_499d65ae848034b47448e62a1f54b52a7f5210836e009ef02f44a7ede4a46edd.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	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	dwhxifyr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3208 wrote to memory of 4564	3208	JaffaCakes118_499d65ae848034b47448e62a1f54b52a7f5210836e009ef02f44a7ede4a46edd.exe	82
PID 3208 wrote to memory of 4564	3208	JaffaCakes118_499d65ae848034b47448e62a1f54b52a7f5210836e009ef02f44a7ede4a46edd.exe	82
PID 3208 wrote to memory of 4564	3208	JaffaCakes118_499d65ae848034b47448e62a1f54b52a7f5210836e009ef02f44a7ede4a46edd.exe	82
PID 3208 wrote to memory of 3760	3208	JaffaCakes118_499d65ae848034b47448e62a1f54b52a7f5210836e009ef02f44a7ede4a46edd.exe	84
PID 3208 wrote to memory of 3760	3208	JaffaCakes118_499d65ae848034b47448e62a1f54b52a7f5210836e009ef02f44a7ede4a46edd.exe	84
PID 3208 wrote to memory of 3760	3208	JaffaCakes118_499d65ae848034b47448e62a1f54b52a7f5210836e009ef02f44a7ede4a46edd.exe	84
PID 3208 wrote to memory of 476	3208	JaffaCakes118_499d65ae848034b47448e62a1f54b52a7f5210836e009ef02f44a7ede4a46edd.exe	86
PID 3208 wrote to memory of 476	3208	JaffaCakes118_499d65ae848034b47448e62a1f54b52a7f5210836e009ef02f44a7ede4a46edd.exe	86
PID 3208 wrote to memory of 476	3208	JaffaCakes118_499d65ae848034b47448e62a1f54b52a7f5210836e009ef02f44a7ede4a46edd.exe	86
PID 3208 wrote to memory of 2396	3208	JaffaCakes118_499d65ae848034b47448e62a1f54b52a7f5210836e009ef02f44a7ede4a46edd.exe	88
PID 3208 wrote to memory of 2396	3208	JaffaCakes118_499d65ae848034b47448e62a1f54b52a7f5210836e009ef02f44a7ede4a46edd.exe	88
PID 3208 wrote to memory of 2396	3208	JaffaCakes118_499d65ae848034b47448e62a1f54b52a7f5210836e009ef02f44a7ede4a46edd.exe	88
PID 3208 wrote to memory of 2728	3208	JaffaCakes118_499d65ae848034b47448e62a1f54b52a7f5210836e009ef02f44a7ede4a46edd.exe	92
PID 3208 wrote to memory of 2728	3208	JaffaCakes118_499d65ae848034b47448e62a1f54b52a7f5210836e009ef02f44a7ede4a46edd.exe	92
PID 3208 wrote to memory of 2728	3208	JaffaCakes118_499d65ae848034b47448e62a1f54b52a7f5210836e009ef02f44a7ede4a46edd.exe	92
PID 3208 wrote to memory of 1208	3208	JaffaCakes118_499d65ae848034b47448e62a1f54b52a7f5210836e009ef02f44a7ede4a46edd.exe	95
PID 3208 wrote to memory of 1208	3208	JaffaCakes118_499d65ae848034b47448e62a1f54b52a7f5210836e009ef02f44a7ede4a46edd.exe	95
PID 3208 wrote to memory of 1208	3208	JaffaCakes118_499d65ae848034b47448e62a1f54b52a7f5210836e009ef02f44a7ede4a46edd.exe	95
PID 2700 wrote to memory of 32	2700	dwhxifyr.exe	101
PID 2700 wrote to memory of 32	2700	dwhxifyr.exe	101
PID 2700 wrote to memory of 32	2700	dwhxifyr.exe	101
PID 2700 wrote to memory of 32	2700	dwhxifyr.exe	101
PID 2700 wrote to memory of 32	2700	dwhxifyr.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_499d65ae848034b47448e62a1f54b52a7f5210836e009ef02f44a7ede4a46edd.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_499d65ae848034b47448e62a1f54b52a7f5210836e009ef02f44a7ede4a46edd.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3208
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fdsrwybe\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4564
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\dwhxifyr.exe" C:\Windows\SysWOW64\fdsrwybe\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3760
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fdsrwybe binPath= "C:\Windows\SysWOW64\fdsrwybe\dwhxifyr.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_499d65ae848034b47448e62a1f54b52a7f5210836e009ef02f44a7ede4a46edd.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:476
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fdsrwybe "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2396
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fdsrwybe
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2728
- 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:1208
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3208 -s 1036
  2⤵
  - Program crash
  PID:3500

C:\Windows\SysWOW64\fdsrwybe\dwhxifyr.exe
C:\Windows\SysWOW64\fdsrwybe\dwhxifyr.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_499d65ae848034b47448e62a1f54b52a7f5210836e009ef02f44a7ede4a46edd.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2700
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:32
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2700 -s 532
  2⤵
  - Program crash
  PID:2948

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3208 -ip 3208
1⤵
PID:4248

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 2700 -ip 2700
1⤵
PID:1616

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\dwhxifyr.exe

Filesize
13.6MB

MD5
c70d5009ae9868aa889ae735a1867e5d

SHA1
9f417f8a3905b34c290e3d23666eaea6be8cd3f3

SHA256
3017241fa919eac8f0ce5f8153770c9876ee7a7db217489670150e0f176f2bbd

SHA512
321e7b8c38ec632970ab4c702a8107053004fe22c7d283ebf6900bfcd08c3fb98a6f58f72a3487eb8b368a96f0b6eefbfbf5d90fccebd396a5a90155095ef13c

Download Submit
memory/32-11-0x0000000000F60000-0x0000000000F75000-memory.dmp

Filesize
84KB

Download
memory/32-13-0x0000000000F60000-0x0000000000F75000-memory.dmp

Filesize
84KB

Download
memory/32-14-0x0000000000F60000-0x0000000000F75000-memory.dmp

Filesize
84KB

Download
memory/2700-10-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/2700-16-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/3208-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3208-1-0x00000000021B0000-0x00000000021C3000-memory.dmp

Filesize
76KB

Download
memory/3208-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3208-8-0x00000000021B0000-0x00000000021C3000-memory.dmp

Filesize
76KB

Download
memory/3208-7-0x00000000021A0000-0x00000000021AD000-memory.dmp

Filesize
52KB

Download
memory/3208-6-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/3208-0-0x00000000021A0000-0x00000000021AD000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads