tofsee | 2beb5b451168718338d33ee3110dc770a0a3886f9fc72c636411a117c6fbd196

General

Target

JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe
Size

14.7MB
MD5

8d496d4cd90fc4f686e2fe25a2a12e29
SHA1

af7136255b04e8062ae6d91315d25db19b817339
SHA256

2beb5b451168718338d33ee3110dc770a0a3886f9fc72c636411a117c6fbd196
SHA512

80b3981ac60e97c01835259dbcc79a20b3559baabeb134c3b5e32bd5f6f4eb6659473886fb30f0358e3d32def0e3ac4aaa7ba8a5a94733c53be3f2b6e3625523
SSDEEP

1536:TVZK1I9rn2BHELrWh9iuDdJm7CyY8rhGDNDxTWNdUhUFIq:XK1Mn2BHsrt4mYnrMdUh

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
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
3096	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\eeupbhuw\ImagePath = "C:\\Windows\\SysWOW64\\eeupbhuw\\xjkezvwt.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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe

Deletes itself 1 IoCs

pid	Process
1968	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
788	xjkezvwt.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 788 set thread context of 1968	788	xjkezvwt.exe	95

Launches sc.exe 3 IoCs

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

pid	Process
3016	sc.exe
1848	sc.exe
2944	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

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xjkezvwt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3876 wrote to memory of 4252	3876	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	83
PID 3876 wrote to memory of 4252	3876	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	83
PID 3876 wrote to memory of 4252	3876	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	83
PID 3876 wrote to memory of 3148	3876	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	85
PID 3876 wrote to memory of 3148	3876	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	85
PID 3876 wrote to memory of 3148	3876	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	85
PID 3876 wrote to memory of 3016	3876	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	87
PID 3876 wrote to memory of 3016	3876	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	87
PID 3876 wrote to memory of 3016	3876	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	87
PID 3876 wrote to memory of 1848	3876	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	89
PID 3876 wrote to memory of 1848	3876	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	89
PID 3876 wrote to memory of 1848	3876	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	89
PID 3876 wrote to memory of 2944	3876	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	92
PID 3876 wrote to memory of 2944	3876	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	92
PID 3876 wrote to memory of 2944	3876	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	92
PID 788 wrote to memory of 1968	788	xjkezvwt.exe	95
PID 788 wrote to memory of 1968	788	xjkezvwt.exe	95
PID 788 wrote to memory of 1968	788	xjkezvwt.exe	95
PID 788 wrote to memory of 1968	788	xjkezvwt.exe	95
PID 788 wrote to memory of 1968	788	xjkezvwt.exe	95
PID 3876 wrote to memory of 3096	3876	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	96
PID 3876 wrote to memory of 3096	3876	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	96
PID 3876 wrote to memory of 3096	3876	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	96

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3876
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\eeupbhuw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4252
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xjkezvwt.exe" C:\Windows\SysWOW64\eeupbhuw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3148
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create eeupbhuw binPath= "C:\Windows\SysWOW64\eeupbhuw\xjkezvwt.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3016
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description eeupbhuw "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1848
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start eeupbhuw
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2944
- 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:3096

C:\Windows\SysWOW64\eeupbhuw\xjkezvwt.exe
C:\Windows\SysWOW64\eeupbhuw\xjkezvwt.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:788
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1968

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\xjkezvwt.exe

Filesize
11.9MB

MD5
c794a60e90718d476f098b1431b2ac4c

SHA1
6eab24826c0270ab02085bb70e50364febc7131c

SHA256
2f80e80c532f1b30f54f9d9a87ccd1288d5abfeeca4d513e468772e3a3bfcb8d

SHA512
7c07e79bd7e5a524762b4b58b7450823fb00b8571c1917b128a74d865fe315f16fb62706a0c9cf3bb502d7ccad7549b7c45395a3e40dce2dcb2febf20a6c6c89

Download Submit
memory/788-7-0x0000000000D30000-0x0000000000D31000-memory.dmp

Filesize
4KB

Download
memory/788-11-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/1968-12-0x00000000003B0000-0x00000000003C5000-memory.dmp

Filesize
84KB

Download
memory/1968-8-0x00000000003B0000-0x00000000003C5000-memory.dmp

Filesize
84KB

Download
memory/1968-14-0x00000000003B0000-0x00000000003C5000-memory.dmp

Filesize
84KB

Download
memory/1968-15-0x00000000003B0000-0x00000000003C5000-memory.dmp

Filesize
84KB

Download
memory/1968-16-0x00000000003B0000-0x00000000003C5000-memory.dmp

Filesize
84KB

Download
memory/3876-0-0x00000000005F0000-0x00000000005F1000-memory.dmp

Filesize
4KB

Download
memory/3876-1-0x0000000002260000-0x0000000002261000-memory.dmp

Filesize
4KB

Download
memory/3876-2-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/3876-13-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads