tofsee | 1cd1580b03e556fcb57e39fbe0343cfe83bdb8295465b2c8d1fdf9bccb665c05

General

Target

JaffaCakes118_1cd1580b03e556fcb57e39fbe0343cfe83bdb8295465b2c8d1fdf9bccb665c05.exe
Size

238KB
MD5

8c0b6a48d2729e1b9a48357010f39c82
SHA1

1e91374534766030922b871cbb3bc4471002d90a
SHA256

1cd1580b03e556fcb57e39fbe0343cfe83bdb8295465b2c8d1fdf9bccb665c05
SHA512

06ccfe6afac060df7bc1aee64d1674940304da523905566ea4a881b6cc879244e8e033a4941dc5b3177450fd13bf76db09bfa1cac8416b0897d55f58936e03a9
SSDEEP

6144:1NeWb3HTIEEEiq6EOQspL6l7ITsq7igavwVf:1N9b3HTIEmq6FbE79

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
3592	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\byqhsnf\ImagePath = "C:\\Windows\\SysWOW64\\byqhsnf\\wyshdzvm.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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	JaffaCakes118_1cd1580b03e556fcb57e39fbe0343cfe83bdb8295465b2c8d1fdf9bccb665c05.exe

Deletes itself 1 IoCs

pid	Process
3976	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
228	wyshdzvm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 228 set thread context of 3976	228	wyshdzvm.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
4480	sc.exe
2176	sc.exe
3304	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
2804	3348	WerFault.exe	81
2912	228	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_1cd1580b03e556fcb57e39fbe0343cfe83bdb8295465b2c8d1fdf9bccb665c05.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wyshdzvm.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3348 wrote to memory of 2268	3348	JaffaCakes118_1cd1580b03e556fcb57e39fbe0343cfe83bdb8295465b2c8d1fdf9bccb665c05.exe	82
PID 3348 wrote to memory of 2268	3348	JaffaCakes118_1cd1580b03e556fcb57e39fbe0343cfe83bdb8295465b2c8d1fdf9bccb665c05.exe	82
PID 3348 wrote to memory of 2268	3348	JaffaCakes118_1cd1580b03e556fcb57e39fbe0343cfe83bdb8295465b2c8d1fdf9bccb665c05.exe	82
PID 3348 wrote to memory of 3504	3348	JaffaCakes118_1cd1580b03e556fcb57e39fbe0343cfe83bdb8295465b2c8d1fdf9bccb665c05.exe	84
PID 3348 wrote to memory of 3504	3348	JaffaCakes118_1cd1580b03e556fcb57e39fbe0343cfe83bdb8295465b2c8d1fdf9bccb665c05.exe	84
PID 3348 wrote to memory of 3504	3348	JaffaCakes118_1cd1580b03e556fcb57e39fbe0343cfe83bdb8295465b2c8d1fdf9bccb665c05.exe	84
PID 3348 wrote to memory of 4480	3348	JaffaCakes118_1cd1580b03e556fcb57e39fbe0343cfe83bdb8295465b2c8d1fdf9bccb665c05.exe	86
PID 3348 wrote to memory of 4480	3348	JaffaCakes118_1cd1580b03e556fcb57e39fbe0343cfe83bdb8295465b2c8d1fdf9bccb665c05.exe	86
PID 3348 wrote to memory of 4480	3348	JaffaCakes118_1cd1580b03e556fcb57e39fbe0343cfe83bdb8295465b2c8d1fdf9bccb665c05.exe	86
PID 3348 wrote to memory of 2176	3348	JaffaCakes118_1cd1580b03e556fcb57e39fbe0343cfe83bdb8295465b2c8d1fdf9bccb665c05.exe	88
PID 3348 wrote to memory of 2176	3348	JaffaCakes118_1cd1580b03e556fcb57e39fbe0343cfe83bdb8295465b2c8d1fdf9bccb665c05.exe	88
PID 3348 wrote to memory of 2176	3348	JaffaCakes118_1cd1580b03e556fcb57e39fbe0343cfe83bdb8295465b2c8d1fdf9bccb665c05.exe	88
PID 3348 wrote to memory of 3304	3348	JaffaCakes118_1cd1580b03e556fcb57e39fbe0343cfe83bdb8295465b2c8d1fdf9bccb665c05.exe	90
PID 3348 wrote to memory of 3304	3348	JaffaCakes118_1cd1580b03e556fcb57e39fbe0343cfe83bdb8295465b2c8d1fdf9bccb665c05.exe	90
PID 3348 wrote to memory of 3304	3348	JaffaCakes118_1cd1580b03e556fcb57e39fbe0343cfe83bdb8295465b2c8d1fdf9bccb665c05.exe	90
PID 3348 wrote to memory of 3592	3348	JaffaCakes118_1cd1580b03e556fcb57e39fbe0343cfe83bdb8295465b2c8d1fdf9bccb665c05.exe	93
PID 3348 wrote to memory of 3592	3348	JaffaCakes118_1cd1580b03e556fcb57e39fbe0343cfe83bdb8295465b2c8d1fdf9bccb665c05.exe	93
PID 3348 wrote to memory of 3592	3348	JaffaCakes118_1cd1580b03e556fcb57e39fbe0343cfe83bdb8295465b2c8d1fdf9bccb665c05.exe	93
PID 228 wrote to memory of 3976	228	wyshdzvm.exe	98
PID 228 wrote to memory of 3976	228	wyshdzvm.exe	98
PID 228 wrote to memory of 3976	228	wyshdzvm.exe	98
PID 228 wrote to memory of 3976	228	wyshdzvm.exe	98
PID 228 wrote to memory of 3976	228	wyshdzvm.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1cd1580b03e556fcb57e39fbe0343cfe83bdb8295465b2c8d1fdf9bccb665c05.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1cd1580b03e556fcb57e39fbe0343cfe83bdb8295465b2c8d1fdf9bccb665c05.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3348
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\byqhsnf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2268
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wyshdzvm.exe" C:\Windows\SysWOW64\byqhsnf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3504
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create byqhsnf binPath= "C:\Windows\SysWOW64\byqhsnf\wyshdzvm.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1cd1580b03e556fcb57e39fbe0343cfe83bdb8295465b2c8d1fdf9bccb665c05.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4480
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description byqhsnf "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2176
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start byqhsnf
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3304
- 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:3592
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3348 -s 652
  2⤵
  - Program crash
  PID:2804

C:\Windows\SysWOW64\byqhsnf\wyshdzvm.exe
C:\Windows\SysWOW64\byqhsnf\wyshdzvm.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1cd1580b03e556fcb57e39fbe0343cfe83bdb8295465b2c8d1fdf9bccb665c05.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:228
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3976
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 228 -s 508
  2⤵
  - Program crash
  PID:2912

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3348 -ip 3348
1⤵
PID:2028

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 228 -ip 228
1⤵
PID:1624

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\wyshdzvm.exe

Filesize
13.7MB

MD5
07b137222f3aed01a54181674a6de657

SHA1
ee313f00f33476fa3fcd0ae0d2c7f2c478c8a958

SHA256
080202a65c8d768cf05307ce7346ebc6b99e5aa67bf73946ce453bc09969df1f

SHA512
2a0a835658bedfc4fac2488d22061c407aaeac96933275cd373699159d675c67683559776033cf12b8aebd3434c11de799bf8681acf109edce58b86a2954e891

Download Submit
memory/228-6-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/228-15-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/228-7-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/3348-10-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/3348-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3348-12-0x00000000021B0000-0x00000000021C3000-memory.dmp

Filesize
76KB

Download
memory/3348-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3348-0-0x00000000006F0000-0x00000000006FD000-memory.dmp

Filesize
52KB

Download
memory/3348-11-0x00000000006F0000-0x00000000006FD000-memory.dmp

Filesize
52KB

Download
memory/3348-1-0x00000000021B0000-0x00000000021C3000-memory.dmp

Filesize
76KB

Download
memory/3976-8-0x00000000001B0000-0x00000000001C5000-memory.dmp

Filesize
84KB

Download
memory/3976-16-0x00000000001B0000-0x00000000001C5000-memory.dmp

Filesize
84KB

Download
memory/3976-17-0x00000000001B0000-0x00000000001C5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads