tofsee | 76497357675e0c88783153ee6af68abc7957862e1a007764594ce564efdb7ba1

General

Target

2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe
Size

11.6MB
MD5

2b99688c1f763affe8a85e2cc71221d9
SHA1

0c9c739ce47c42a34b9c6d2d35d86b1f4e932d70
SHA256

76497357675e0c88783153ee6af68abc7957862e1a007764594ce564efdb7ba1
SHA512

e0265c40c128168c94ffa6f37e76c545ea84445c3fb54e1522a85eb0772f5bc78084868534c8406565cc39a6d020e7b9c3fcf9ab49a4f99bb2a9c3b31643fd24
SSDEEP

24576:nBYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYP:n

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

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\iezjooxh = "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

2996 netsh.exe

pid	process
2996	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\iezjooxh\ImagePath = "C:\\Windows\\SysWOW64\\iezjooxh\\oavszyym.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2832 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

oavszyym.exe

pid process

2244 oavszyym.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

oavszyym.exe

description pid process target process

PID 2244 set thread context of 2832 2244 oavszyym.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

2212 sc.exe
2736 sc.exe
2884 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2832	svchost.exe

pid	process
2244	oavszyym.exe

description	pid	process	target process
PID 2244 set thread context of 2832	2244	oavszyym.exe	svchost.exe

pid	process
2212	sc.exe
2736	sc.exe
2884	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:

2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.execmd.execmd.exesc.exeoavszyym.exesc.exesc.exenetsh.exesvchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2b99688c1f763affe8a85e2cc71221d9_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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	oavszyym.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	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exeoavszyym.exe

description	pid	process	target process
PID 3040 wrote to memory of 1040	3040	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	cmd.exe
PID 3040 wrote to memory of 1040	3040	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	cmd.exe
PID 3040 wrote to memory of 1040	3040	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	cmd.exe
PID 3040 wrote to memory of 1040	3040	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	cmd.exe
PID 3040 wrote to memory of 2984	3040	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	cmd.exe
PID 3040 wrote to memory of 2984	3040	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	cmd.exe
PID 3040 wrote to memory of 2984	3040	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	cmd.exe
PID 3040 wrote to memory of 2984	3040	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	cmd.exe
PID 3040 wrote to memory of 2212	3040	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	sc.exe
PID 3040 wrote to memory of 2212	3040	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	sc.exe
PID 3040 wrote to memory of 2212	3040	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	sc.exe
PID 3040 wrote to memory of 2212	3040	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	sc.exe
PID 3040 wrote to memory of 2736	3040	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	sc.exe
PID 3040 wrote to memory of 2736	3040	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	sc.exe
PID 3040 wrote to memory of 2736	3040	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	sc.exe
PID 3040 wrote to memory of 2736	3040	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	sc.exe
PID 3040 wrote to memory of 2884	3040	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	sc.exe
PID 3040 wrote to memory of 2884	3040	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	sc.exe
PID 3040 wrote to memory of 2884	3040	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	sc.exe
PID 3040 wrote to memory of 2884	3040	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	sc.exe
PID 3040 wrote to memory of 2996	3040	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	netsh.exe
PID 3040 wrote to memory of 2996	3040	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	netsh.exe
PID 3040 wrote to memory of 2996	3040	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	netsh.exe
PID 3040 wrote to memory of 2996	3040	2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe	netsh.exe
PID 2244 wrote to memory of 2832	2244	oavszyym.exe	svchost.exe
PID 2244 wrote to memory of 2832	2244	oavszyym.exe	svchost.exe
PID 2244 wrote to memory of 2832	2244	oavszyym.exe	svchost.exe
PID 2244 wrote to memory of 2832	2244	oavszyym.exe	svchost.exe
PID 2244 wrote to memory of 2832	2244	oavszyym.exe	svchost.exe
PID 2244 wrote to memory of 2832	2244	oavszyym.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3040
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\iezjooxh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1040
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\oavszyym.exe" C:\Windows\SysWOW64\iezjooxh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2984
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create iezjooxh binPath= "C:\Windows\SysWOW64\iezjooxh\oavszyym.exe /d\"C:\Users\Admin\AppData\Local\Temp\2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2212
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description iezjooxh "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2736
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start iezjooxh
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2884
- 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:2996

C:\Windows\SysWOW64\iezjooxh\oavszyym.exe
C:\Windows\SysWOW64\iezjooxh\oavszyym.exe /d"C:\Users\Admin\AppData\Local\Temp\2b99688c1f763affe8a85e2cc71221d9_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2244
- 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:2832

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\oavszyym.exe

Filesize
12.1MB

MD5
502be65b96a2e8e7299bb7c403a5950a

SHA1
f93b28679058050d4ca43b8153b06204c6c522e6

SHA256
fb823ac6e2a049fb3f8766a45cb095e8941519a973eb97a01ce0776c4ffaef36

SHA512
36a64c9b9d8a45ea37cef34cd69597b0bb8bb615bcce64262c3d2aff671a6258b2f0b497b3bba34fbaa1696547afdca3ab417e9e76ea0ba4cceb37f386d80128

Download Submit
memory/2244-17-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2832-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2832-16-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2832-14-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2832-11-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2832-18-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/3040-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3040-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3040-9-0x00000000001B0000-0x00000000001C3000-memory.dmp

Filesize
76KB

Download
memory/3040-8-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/3040-1-0x0000000000290000-0x0000000000390000-memory.dmp

Filesize
1024KB

Download
memory/3040-2-0x00000000001B0000-0x00000000001C3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads