tofsee | 12ebfa7f053cf8a58825e9ebf857f56c64825bcb2f99e79d169bd536d7b4b112

General

Target

305372743bc24f803c3e16da163b3864_JaffaCakes118.exe
Size

12.8MB
MD5

305372743bc24f803c3e16da163b3864
SHA1

14bdf942d5a8d5f6e6ccbd6b11e8c9ea0ef41725
SHA256

12ebfa7f053cf8a58825e9ebf857f56c64825bcb2f99e79d169bd536d7b4b112
SHA512

e87336ba7fdad70a5ddb5360e0048bdd7d536fe8a7317e3ad6e2103e763cb560d2b8cd55e1b2c67116d4fc31a842dde5f47ddbd5fd33f9ee475da1fadf57fa33
SSDEEP

6144:zJuDszifRNFwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww3:Nubf7

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\cybrtyha = "0"	svchost.exe

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

Processes:

netsh.exe

pid process

2904 netsh.exe

pid	process
2904	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\cybrtyha\ImagePath = "C:\\Windows\\SysWOW64\\cybrtyha\\gthkmmkx.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2616 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

gthkmmkx.exe

pid process

2272 gthkmmkx.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

gthkmmkx.exe

description pid process target process

PID 2272 set thread context of 2616 2272 gthkmmkx.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

2928 sc.exe
2156 sc.exe
2920 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2616	svchost.exe

pid	process
2272	gthkmmkx.exe

description	pid	process	target process
PID 2272 set thread context of 2616	2272	gthkmmkx.exe	svchost.exe

pid	process
2928	sc.exe
2156	sc.exe
2920	sc.exe

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

Processes:

netsh.exe

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

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

Processes:

305372743bc24f803c3e16da163b3864_JaffaCakes118.execmd.execmd.exegthkmmkx.exesvchost.exesc.exesc.exesc.exenetsh.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	305372743bc24f803c3e16da163b3864_JaffaCakes118.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	gthkmmkx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

305372743bc24f803c3e16da163b3864_JaffaCakes118.exegthkmmkx.exe

description	pid	process	target process
PID 2104 wrote to memory of 2388	2104	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	cmd.exe
PID 2104 wrote to memory of 2388	2104	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	cmd.exe
PID 2104 wrote to memory of 2388	2104	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	cmd.exe
PID 2104 wrote to memory of 2388	2104	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	cmd.exe
PID 2104 wrote to memory of 2276	2104	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	cmd.exe
PID 2104 wrote to memory of 2276	2104	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	cmd.exe
PID 2104 wrote to memory of 2276	2104	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	cmd.exe
PID 2104 wrote to memory of 2276	2104	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	cmd.exe
PID 2104 wrote to memory of 2928	2104	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	sc.exe
PID 2104 wrote to memory of 2928	2104	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	sc.exe
PID 2104 wrote to memory of 2928	2104	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	sc.exe
PID 2104 wrote to memory of 2928	2104	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	sc.exe
PID 2104 wrote to memory of 2156	2104	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	sc.exe
PID 2104 wrote to memory of 2156	2104	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	sc.exe
PID 2104 wrote to memory of 2156	2104	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	sc.exe
PID 2104 wrote to memory of 2156	2104	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	sc.exe
PID 2104 wrote to memory of 2920	2104	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	sc.exe
PID 2104 wrote to memory of 2920	2104	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	sc.exe
PID 2104 wrote to memory of 2920	2104	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	sc.exe
PID 2104 wrote to memory of 2920	2104	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	sc.exe
PID 2272 wrote to memory of 2616	2272	gthkmmkx.exe	svchost.exe
PID 2272 wrote to memory of 2616	2272	gthkmmkx.exe	svchost.exe
PID 2272 wrote to memory of 2616	2272	gthkmmkx.exe	svchost.exe
PID 2272 wrote to memory of 2616	2272	gthkmmkx.exe	svchost.exe
PID 2272 wrote to memory of 2616	2272	gthkmmkx.exe	svchost.exe
PID 2272 wrote to memory of 2616	2272	gthkmmkx.exe	svchost.exe
PID 2104 wrote to memory of 2904	2104	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	netsh.exe
PID 2104 wrote to memory of 2904	2104	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	netsh.exe
PID 2104 wrote to memory of 2904	2104	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	netsh.exe
PID 2104 wrote to memory of 2904	2104	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\305372743bc24f803c3e16da163b3864_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\305372743bc24f803c3e16da163b3864_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2104

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cybrtyha\
2⤵
- System Location Discovery: System Language Discovery
PID:2388

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gthkmmkx.exe" C:\Windows\SysWOW64\cybrtyha\
2⤵
- System Location Discovery: System Language Discovery
PID:2276

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create cybrtyha binPath= "C:\Windows\SysWOW64\cybrtyha\gthkmmkx.exe /d\"C:\Users\Admin\AppData\Local\Temp\305372743bc24f803c3e16da163b3864_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:2928

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description cybrtyha "wifi internet conection"
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:2156

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start cybrtyha
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:2920

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:2904

C:\Windows\SysWOW64\cybrtyha\gthkmmkx.exe
C:\Windows\SysWOW64\cybrtyha\gthkmmkx.exe /d"C:\Users\Admin\AppData\Local\Temp\305372743bc24f803c3e16da163b3864_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2272

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
- System Location Discovery: System Language Discovery
PID:2616

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

2

T1562

Disable or Modify System Firewall

1

T1562.004

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

1

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\gthkmmkx.exe

Filesize
14.8MB

MD5
0b7a7a61ec2a82b56d65e1b7a2383266

SHA1
3ac131c429dfb33788ae1ea9d692fa008f78ca4e

SHA256
166f9025d45b47cf64d97b0bf174b1b8a41d6cd65ce36d086166061f980f4067

SHA512
89dcf168cd543ee4f53c637be754aec075048dbedc1d88b5c44a675d5e285d02ab3c00629f1d60173c5ca64adc797d9f24595420083b2b986516e79f23c21885

Download Submit
memory/2104-2-0x0000000000260000-0x0000000000261000-memory.dmp

Filesize
4KB

Download
memory/2104-1-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download
memory/2104-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2104-13-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2272-11-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2616-10-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2616-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2616-7-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2616-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2616-15-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads