tofsee | 7e6602ff1c7434051e41ae25cffaf8fc0ac0a5ba5e31af197754b96df3d98a22

General

Target

JaffaCakes118_7e6602ff1c7434051e41ae25cffaf8fc0ac0a5ba5e31af197754b96df3d98a22.exe
Size

238KB
MD5

88e99e937fb74c00ddd0ad4f2bd2cb6c
SHA1

aa04d71a3586d4bd0e00966f7347eb420e016b67
SHA256

7e6602ff1c7434051e41ae25cffaf8fc0ac0a5ba5e31af197754b96df3d98a22
SHA512

5f861e16c4b7863acc8c60e8363d328f3108417be65870918a81d2f3e93d12b40d2f18ba6c6401e3035c89dd72a021393fdad6a66ae56a31283522ecad468467
SSDEEP

6144:MpZQC4h2Yaltbf2O133EhKew3Oj2GYdK:OZ8altbfDEhFCfG

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
624	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\phzeithe\ImagePath = "C:\\Windows\\SysWOW64\\phzeithe\\yfrenabv.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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	JaffaCakes118_7e6602ff1c7434051e41ae25cffaf8fc0ac0a5ba5e31af197754b96df3d98a22.exe

Deletes itself 1 IoCs

pid	Process
5088	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1596	yfrenabv.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1596 set thread context of 5088	1596	yfrenabv.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
460	sc.exe
1892	sc.exe
3172	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
1164	3240	WerFault.exe	84
3228	1596	WerFault.exe	96

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_7e6602ff1c7434051e41ae25cffaf8fc0ac0a5ba5e31af197754b96df3d98a22.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	yfrenabv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3240 wrote to memory of 1960	3240	JaffaCakes118_7e6602ff1c7434051e41ae25cffaf8fc0ac0a5ba5e31af197754b96df3d98a22.exe	85
PID 3240 wrote to memory of 1960	3240	JaffaCakes118_7e6602ff1c7434051e41ae25cffaf8fc0ac0a5ba5e31af197754b96df3d98a22.exe	85
PID 3240 wrote to memory of 1960	3240	JaffaCakes118_7e6602ff1c7434051e41ae25cffaf8fc0ac0a5ba5e31af197754b96df3d98a22.exe	85
PID 3240 wrote to memory of 3552	3240	JaffaCakes118_7e6602ff1c7434051e41ae25cffaf8fc0ac0a5ba5e31af197754b96df3d98a22.exe	87
PID 3240 wrote to memory of 3552	3240	JaffaCakes118_7e6602ff1c7434051e41ae25cffaf8fc0ac0a5ba5e31af197754b96df3d98a22.exe	87
PID 3240 wrote to memory of 3552	3240	JaffaCakes118_7e6602ff1c7434051e41ae25cffaf8fc0ac0a5ba5e31af197754b96df3d98a22.exe	87
PID 3240 wrote to memory of 460	3240	JaffaCakes118_7e6602ff1c7434051e41ae25cffaf8fc0ac0a5ba5e31af197754b96df3d98a22.exe	89
PID 3240 wrote to memory of 460	3240	JaffaCakes118_7e6602ff1c7434051e41ae25cffaf8fc0ac0a5ba5e31af197754b96df3d98a22.exe	89
PID 3240 wrote to memory of 460	3240	JaffaCakes118_7e6602ff1c7434051e41ae25cffaf8fc0ac0a5ba5e31af197754b96df3d98a22.exe	89
PID 3240 wrote to memory of 1892	3240	JaffaCakes118_7e6602ff1c7434051e41ae25cffaf8fc0ac0a5ba5e31af197754b96df3d98a22.exe	92
PID 3240 wrote to memory of 1892	3240	JaffaCakes118_7e6602ff1c7434051e41ae25cffaf8fc0ac0a5ba5e31af197754b96df3d98a22.exe	92
PID 3240 wrote to memory of 1892	3240	JaffaCakes118_7e6602ff1c7434051e41ae25cffaf8fc0ac0a5ba5e31af197754b96df3d98a22.exe	92
PID 3240 wrote to memory of 3172	3240	JaffaCakes118_7e6602ff1c7434051e41ae25cffaf8fc0ac0a5ba5e31af197754b96df3d98a22.exe	94
PID 3240 wrote to memory of 3172	3240	JaffaCakes118_7e6602ff1c7434051e41ae25cffaf8fc0ac0a5ba5e31af197754b96df3d98a22.exe	94
PID 3240 wrote to memory of 3172	3240	JaffaCakes118_7e6602ff1c7434051e41ae25cffaf8fc0ac0a5ba5e31af197754b96df3d98a22.exe	94
PID 3240 wrote to memory of 624	3240	JaffaCakes118_7e6602ff1c7434051e41ae25cffaf8fc0ac0a5ba5e31af197754b96df3d98a22.exe	97
PID 3240 wrote to memory of 624	3240	JaffaCakes118_7e6602ff1c7434051e41ae25cffaf8fc0ac0a5ba5e31af197754b96df3d98a22.exe	97
PID 3240 wrote to memory of 624	3240	JaffaCakes118_7e6602ff1c7434051e41ae25cffaf8fc0ac0a5ba5e31af197754b96df3d98a22.exe	97
PID 1596 wrote to memory of 5088	1596	yfrenabv.exe	103
PID 1596 wrote to memory of 5088	1596	yfrenabv.exe	103
PID 1596 wrote to memory of 5088	1596	yfrenabv.exe	103
PID 1596 wrote to memory of 5088	1596	yfrenabv.exe	103
PID 1596 wrote to memory of 5088	1596	yfrenabv.exe	103

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7e6602ff1c7434051e41ae25cffaf8fc0ac0a5ba5e31af197754b96df3d98a22.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7e6602ff1c7434051e41ae25cffaf8fc0ac0a5ba5e31af197754b96df3d98a22.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3240
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\phzeithe\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1960
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\yfrenabv.exe" C:\Windows\SysWOW64\phzeithe\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3552
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create phzeithe binPath= "C:\Windows\SysWOW64\phzeithe\yfrenabv.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7e6602ff1c7434051e41ae25cffaf8fc0ac0a5ba5e31af197754b96df3d98a22.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:460
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description phzeithe "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1892
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start phzeithe
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3172
- 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:624
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3240 -s 652
  2⤵
  - Program crash
  PID:1164

C:\Windows\SysWOW64\phzeithe\yfrenabv.exe
C:\Windows\SysWOW64\phzeithe\yfrenabv.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7e6602ff1c7434051e41ae25cffaf8fc0ac0a5ba5e31af197754b96df3d98a22.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1596
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:5088
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1596 -s 508
  2⤵
  - Program crash
  PID:3228

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3240 -ip 3240
1⤵
PID:3660

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1596 -ip 1596
1⤵
PID:3860

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\yfrenabv.exe

Filesize
14.3MB

MD5
500d690361d5702e87fd6c54a144c894

SHA1
9c480fe7bb8c8f14859edc7043be04433f69c31c

SHA256
3264c2842b80dca79453c5021e1077811a7291b60210266ddeba8a61909d042c

SHA512
970a32726f75eef43ffcefa09cd97241dfcb0bc26d657b29c1730ca443796af69e8e2bd06e1e1a2b482722249d5f7da1029a42e4bea026c3db4f83300e2c2b21

Download Submit
memory/1596-12-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1596-11-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1596-18-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3240-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3240-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3240-8-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3240-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3240-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3240-1-0x0000000000790000-0x0000000000890000-memory.dmp

Filesize
1024KB

Download
memory/5088-13-0x0000000000D70000-0x0000000000D85000-memory.dmp

Filesize
84KB

Download
memory/5088-15-0x0000000000D70000-0x0000000000D85000-memory.dmp

Filesize
84KB

Download
memory/5088-16-0x0000000000D70000-0x0000000000D85000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads