tofsee | ca2899571b116e1c462f0d68480865f3f694e95a9b16c45af44c28327197d593

General

Target

JaffaCakes118_1a738fafd9d63b35e2235d6eda9a28f5.exe
Size

11.9MB
MD5

1a738fafd9d63b35e2235d6eda9a28f5
SHA1

fbd3dc9fc9b476f51de8ae1323b90bbc0a299437
SHA256

ca2899571b116e1c462f0d68480865f3f694e95a9b16c45af44c28327197d593
SHA512

b205d1f591831b1608f88cfd44270e3a7460fddab4bc38ba2829d8a7f52a42a10847c513a20b9757b0ca0b523ac76e75260a45f1be8d11d49cd376f479ff6125
SSDEEP

12288:MjjTPaKiQnJpVAwyCubY4ud8rf/444444444444444444444444444444444444v:ej7aK7Jpd

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
1980	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\kfgeemed\ImagePath = "C:\\Windows\\SysWOW64\\kfgeemed\\ixyercwv.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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	JaffaCakes118_1a738fafd9d63b35e2235d6eda9a28f5.exe

Deletes itself 1 IoCs

pid	Process
2248	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3192	ixyercwv.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3192 set thread context of 2248	3192	ixyercwv.exe	95

Launches sc.exe 3 IoCs

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

pid	Process
2264	sc.exe
4280	sc.exe
1708	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
4092	3192	WerFault.exe	93
3168	1356	WerFault.exe	82

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ixyercwv.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	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_1a738fafd9d63b35e2235d6eda9a28f5.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1356 wrote to memory of 3020	1356	JaffaCakes118_1a738fafd9d63b35e2235d6eda9a28f5.exe	83
PID 1356 wrote to memory of 3020	1356	JaffaCakes118_1a738fafd9d63b35e2235d6eda9a28f5.exe	83
PID 1356 wrote to memory of 3020	1356	JaffaCakes118_1a738fafd9d63b35e2235d6eda9a28f5.exe	83
PID 1356 wrote to memory of 2156	1356	JaffaCakes118_1a738fafd9d63b35e2235d6eda9a28f5.exe	85
PID 1356 wrote to memory of 2156	1356	JaffaCakes118_1a738fafd9d63b35e2235d6eda9a28f5.exe	85
PID 1356 wrote to memory of 2156	1356	JaffaCakes118_1a738fafd9d63b35e2235d6eda9a28f5.exe	85
PID 1356 wrote to memory of 2264	1356	JaffaCakes118_1a738fafd9d63b35e2235d6eda9a28f5.exe	87
PID 1356 wrote to memory of 2264	1356	JaffaCakes118_1a738fafd9d63b35e2235d6eda9a28f5.exe	87
PID 1356 wrote to memory of 2264	1356	JaffaCakes118_1a738fafd9d63b35e2235d6eda9a28f5.exe	87
PID 1356 wrote to memory of 4280	1356	JaffaCakes118_1a738fafd9d63b35e2235d6eda9a28f5.exe	89
PID 1356 wrote to memory of 4280	1356	JaffaCakes118_1a738fafd9d63b35e2235d6eda9a28f5.exe	89
PID 1356 wrote to memory of 4280	1356	JaffaCakes118_1a738fafd9d63b35e2235d6eda9a28f5.exe	89
PID 1356 wrote to memory of 1708	1356	JaffaCakes118_1a738fafd9d63b35e2235d6eda9a28f5.exe	91
PID 1356 wrote to memory of 1708	1356	JaffaCakes118_1a738fafd9d63b35e2235d6eda9a28f5.exe	91
PID 1356 wrote to memory of 1708	1356	JaffaCakes118_1a738fafd9d63b35e2235d6eda9a28f5.exe	91
PID 3192 wrote to memory of 2248	3192	ixyercwv.exe	95
PID 3192 wrote to memory of 2248	3192	ixyercwv.exe	95
PID 3192 wrote to memory of 2248	3192	ixyercwv.exe	95
PID 3192 wrote to memory of 2248	3192	ixyercwv.exe	95
PID 3192 wrote to memory of 2248	3192	ixyercwv.exe	95
PID 1356 wrote to memory of 1980	1356	JaffaCakes118_1a738fafd9d63b35e2235d6eda9a28f5.exe	100
PID 1356 wrote to memory of 1980	1356	JaffaCakes118_1a738fafd9d63b35e2235d6eda9a28f5.exe	100
PID 1356 wrote to memory of 1980	1356	JaffaCakes118_1a738fafd9d63b35e2235d6eda9a28f5.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1a738fafd9d63b35e2235d6eda9a28f5.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1a738fafd9d63b35e2235d6eda9a28f5.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1356
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kfgeemed\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3020
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ixyercwv.exe" C:\Windows\SysWOW64\kfgeemed\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2156
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create kfgeemed binPath= "C:\Windows\SysWOW64\kfgeemed\ixyercwv.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1a738fafd9d63b35e2235d6eda9a28f5.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2264
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description kfgeemed "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4280
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start kfgeemed
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1708
- 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:1980
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1356 -s 1236
  2⤵
  - Program crash
  PID:3168

C:\Windows\SysWOW64\kfgeemed\ixyercwv.exe
C:\Windows\SysWOW64\kfgeemed\ixyercwv.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1a738fafd9d63b35e2235d6eda9a28f5.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3192
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2248
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3192 -s 560
  2⤵
  - Program crash
  PID:4092

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3192 -ip 3192
1⤵
PID:2344

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 1356 -ip 1356
1⤵
PID:1436

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\ixyercwv.exe

Filesize
11.5MB

MD5
d37ddb6d6c556a1836d82a8ad91fe343

SHA1
3474b59ae2b15c21ace33964c3495d6c030b8aa8

SHA256
6ec2e2c7f93a6f6589c8b18e72c1a5c420c66cebefcbaba222a5248efb876dd8

SHA512
12b2d81dcc9409138e567a0691afd32a6da1fd4496e4f08d5d48a63164dceb78afe4c7b46f9da29892b50c75dd4077c5efcce0870e6cde08a01df997acd325fd

Download Submit
memory/1356-1-0x0000000003020000-0x0000000003120000-memory.dmp

Filesize
1024KB

Download
memory/1356-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/1356-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1356-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1356-12-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/1356-11-0x0000000000400000-0x0000000002DAB000-memory.dmp

Filesize
41.7MB

Download
memory/2248-8-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2248-14-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2248-15-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3192-10-0x0000000000400000-0x0000000002DAB000-memory.dmp

Filesize
41.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads