tofsee | 7ba54a05a984fee14ebb6858dedf7bd78bb4a01791b71257697b387590a26ecd

General

Target

JaffaCakes118_450f776d1da2bc4ed3f7638282f4c518.exe
Size

10.6MB
MD5

450f776d1da2bc4ed3f7638282f4c518
SHA1

e0146150acaf2bd63e9aab2617749473d60817f5
SHA256

7ba54a05a984fee14ebb6858dedf7bd78bb4a01791b71257697b387590a26ecd
SHA512

df5303bad0f8f940b8e26b6c8eac391eb40f9b1a65f514e495027ec5ab6cdd8a25765d9d83f663bd0eb9846ee638a90aa78620b5aa3fdacd6fc14206e3179bdb
SSDEEP

6144:HCuvSVL/t4EOL2KAR48Do2Do2Do2Do2Do2Do2Do2Do2Do2Do2Do2Do2Do2Do2Do3:HCOSVxELDAR

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
1572	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\xlzjyzmk\ImagePath = "C:\\Windows\\SysWOW64\\xlzjyzmk\\tsgiwtum.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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	JaffaCakes118_450f776d1da2bc4ed3f7638282f4c518.exe

Deletes itself 1 IoCs

pid	Process
4632	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
232	tsgiwtum.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 232 set thread context of 4632	232	tsgiwtum.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
3820	sc.exe
972	sc.exe
4592	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
4684	4736	WerFault.exe	82
944	232	WerFault.exe	94

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_450f776d1da2bc4ed3f7638282f4c518.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tsgiwtum.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	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4736 wrote to memory of 2708	4736	JaffaCakes118_450f776d1da2bc4ed3f7638282f4c518.exe	83
PID 4736 wrote to memory of 2708	4736	JaffaCakes118_450f776d1da2bc4ed3f7638282f4c518.exe	83
PID 4736 wrote to memory of 2708	4736	JaffaCakes118_450f776d1da2bc4ed3f7638282f4c518.exe	83
PID 4736 wrote to memory of 3216	4736	JaffaCakes118_450f776d1da2bc4ed3f7638282f4c518.exe	85
PID 4736 wrote to memory of 3216	4736	JaffaCakes118_450f776d1da2bc4ed3f7638282f4c518.exe	85
PID 4736 wrote to memory of 3216	4736	JaffaCakes118_450f776d1da2bc4ed3f7638282f4c518.exe	85
PID 4736 wrote to memory of 3820	4736	JaffaCakes118_450f776d1da2bc4ed3f7638282f4c518.exe	87
PID 4736 wrote to memory of 3820	4736	JaffaCakes118_450f776d1da2bc4ed3f7638282f4c518.exe	87
PID 4736 wrote to memory of 3820	4736	JaffaCakes118_450f776d1da2bc4ed3f7638282f4c518.exe	87
PID 4736 wrote to memory of 972	4736	JaffaCakes118_450f776d1da2bc4ed3f7638282f4c518.exe	90
PID 4736 wrote to memory of 972	4736	JaffaCakes118_450f776d1da2bc4ed3f7638282f4c518.exe	90
PID 4736 wrote to memory of 972	4736	JaffaCakes118_450f776d1da2bc4ed3f7638282f4c518.exe	90
PID 4736 wrote to memory of 4592	4736	JaffaCakes118_450f776d1da2bc4ed3f7638282f4c518.exe	92
PID 4736 wrote to memory of 4592	4736	JaffaCakes118_450f776d1da2bc4ed3f7638282f4c518.exe	92
PID 4736 wrote to memory of 4592	4736	JaffaCakes118_450f776d1da2bc4ed3f7638282f4c518.exe	92
PID 4736 wrote to memory of 1572	4736	JaffaCakes118_450f776d1da2bc4ed3f7638282f4c518.exe	95
PID 4736 wrote to memory of 1572	4736	JaffaCakes118_450f776d1da2bc4ed3f7638282f4c518.exe	95
PID 4736 wrote to memory of 1572	4736	JaffaCakes118_450f776d1da2bc4ed3f7638282f4c518.exe	95
PID 232 wrote to memory of 4632	232	tsgiwtum.exe	101
PID 232 wrote to memory of 4632	232	tsgiwtum.exe	101
PID 232 wrote to memory of 4632	232	tsgiwtum.exe	101
PID 232 wrote to memory of 4632	232	tsgiwtum.exe	101
PID 232 wrote to memory of 4632	232	tsgiwtum.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_450f776d1da2bc4ed3f7638282f4c518.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_450f776d1da2bc4ed3f7638282f4c518.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4736
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xlzjyzmk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2708
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tsgiwtum.exe" C:\Windows\SysWOW64\xlzjyzmk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3216
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create xlzjyzmk binPath= "C:\Windows\SysWOW64\xlzjyzmk\tsgiwtum.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_450f776d1da2bc4ed3f7638282f4c518.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3820
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description xlzjyzmk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:972
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start xlzjyzmk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4592
- 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:1572
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4736 -s 648
  2⤵
  - Program crash
  PID:4684

C:\Windows\SysWOW64\xlzjyzmk\tsgiwtum.exe
C:\Windows\SysWOW64\xlzjyzmk\tsgiwtum.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_450f776d1da2bc4ed3f7638282f4c518.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:232
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4632
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 232 -s 532
  2⤵
  - Program crash
  PID:944

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4736 -ip 4736
1⤵
PID:2228

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 232 -ip 232
1⤵
PID:4280

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\tsgiwtum.exe

Filesize
12.7MB

MD5
89484febf5df461aa58fab7e0d42eab3

SHA1
be1597ff790e44b1f3017c45ba1aa3fa10c75377

SHA256
4121af8f53df35b687a1ef6ee99a285724a0a31464f55f96e08503c566bc6d04

SHA512
26bd53a8d8658028d1198cb1a1b5f87df7241d10d1706aa253cd20dab20685427fbe17cce797f13d2b55de4262030e88afa5aa4f5341a9c2d91f93c7e3790db4

Download Submit
memory/232-11-0x0000000000400000-0x0000000000824000-memory.dmp

Filesize
4.1MB

Download
memory/232-16-0x0000000000400000-0x0000000000824000-memory.dmp

Filesize
4.1MB

Download
memory/4632-12-0x00000000007C0000-0x00000000007D5000-memory.dmp

Filesize
84KB

Download
memory/4632-14-0x00000000007C0000-0x00000000007D5000-memory.dmp

Filesize
84KB

Download
memory/4632-15-0x00000000007C0000-0x00000000007D5000-memory.dmp

Filesize
84KB

Download
memory/4736-2-0x0000000002570000-0x0000000002583000-memory.dmp

Filesize
76KB

Download
memory/4736-1-0x0000000000870000-0x0000000000970000-memory.dmp

Filesize
1024KB

Download
memory/4736-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4736-8-0x0000000000400000-0x0000000000824000-memory.dmp

Filesize
4.1MB

Download
memory/4736-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4736-9-0x0000000002570000-0x0000000002583000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads