tofsee | d7121e733b9db0b3a06161df0104e10d9155df0f3cce1a54e52c386524bcf201

General

Target

JaffaCakes118_50f5de9caf57d2964071e9913072ce45.exe
Size

13.0MB
MD5

50f5de9caf57d2964071e9913072ce45
SHA1

0557009ed61b02e6ab9b83ff752229a754f67aa9
SHA256

d7121e733b9db0b3a06161df0104e10d9155df0f3cce1a54e52c386524bcf201
SHA512

bbbf7cdef48c43492d5c2091a3eda5c5b9ab437009613323d9f7482e4764d2664c7b0380ae8985c1de4eca0a1fb3b4f3d3da34bb9ff21b2f117d0e79e15b88a3
SSDEEP

49152:hOFK1llllllllllllllllllllllllllllllllllllllllllllllllllllllllll1:9

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
4640	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\djlhqlvv\ImagePath = "C:\\Windows\\SysWOW64\\djlhqlvv\\tyxvlrap.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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	JaffaCakes118_50f5de9caf57d2964071e9913072ce45.exe

Deletes itself 1 IoCs

pid	Process
832	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2436	tyxvlrap.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2436 set thread context of 832	2436	tyxvlrap.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
3188	sc.exe
4376	sc.exe
2496	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2124	2896	WerFault.exe	84
232	2436	WerFault.exe	96

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	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tyxvlrap.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_50f5de9caf57d2964071e9913072ce45.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2896 wrote to memory of 4712	2896	JaffaCakes118_50f5de9caf57d2964071e9913072ce45.exe	85
PID 2896 wrote to memory of 4712	2896	JaffaCakes118_50f5de9caf57d2964071e9913072ce45.exe	85
PID 2896 wrote to memory of 4712	2896	JaffaCakes118_50f5de9caf57d2964071e9913072ce45.exe	85
PID 2896 wrote to memory of 2200	2896	JaffaCakes118_50f5de9caf57d2964071e9913072ce45.exe	87
PID 2896 wrote to memory of 2200	2896	JaffaCakes118_50f5de9caf57d2964071e9913072ce45.exe	87
PID 2896 wrote to memory of 2200	2896	JaffaCakes118_50f5de9caf57d2964071e9913072ce45.exe	87
PID 2896 wrote to memory of 3188	2896	JaffaCakes118_50f5de9caf57d2964071e9913072ce45.exe	90
PID 2896 wrote to memory of 3188	2896	JaffaCakes118_50f5de9caf57d2964071e9913072ce45.exe	90
PID 2896 wrote to memory of 3188	2896	JaffaCakes118_50f5de9caf57d2964071e9913072ce45.exe	90
PID 2896 wrote to memory of 4376	2896	JaffaCakes118_50f5de9caf57d2964071e9913072ce45.exe	92
PID 2896 wrote to memory of 4376	2896	JaffaCakes118_50f5de9caf57d2964071e9913072ce45.exe	92
PID 2896 wrote to memory of 4376	2896	JaffaCakes118_50f5de9caf57d2964071e9913072ce45.exe	92
PID 2896 wrote to memory of 2496	2896	JaffaCakes118_50f5de9caf57d2964071e9913072ce45.exe	94
PID 2896 wrote to memory of 2496	2896	JaffaCakes118_50f5de9caf57d2964071e9913072ce45.exe	94
PID 2896 wrote to memory of 2496	2896	JaffaCakes118_50f5de9caf57d2964071e9913072ce45.exe	94
PID 2896 wrote to memory of 4640	2896	JaffaCakes118_50f5de9caf57d2964071e9913072ce45.exe	97
PID 2896 wrote to memory of 4640	2896	JaffaCakes118_50f5de9caf57d2964071e9913072ce45.exe	97
PID 2896 wrote to memory of 4640	2896	JaffaCakes118_50f5de9caf57d2964071e9913072ce45.exe	97
PID 2436 wrote to memory of 832	2436	tyxvlrap.exe	103
PID 2436 wrote to memory of 832	2436	tyxvlrap.exe	103
PID 2436 wrote to memory of 832	2436	tyxvlrap.exe	103
PID 2436 wrote to memory of 832	2436	tyxvlrap.exe	103
PID 2436 wrote to memory of 832	2436	tyxvlrap.exe	103

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_50f5de9caf57d2964071e9913072ce45.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_50f5de9caf57d2964071e9913072ce45.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2896
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\djlhqlvv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4712
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tyxvlrap.exe" C:\Windows\SysWOW64\djlhqlvv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2200
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create djlhqlvv binPath= "C:\Windows\SysWOW64\djlhqlvv\tyxvlrap.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_50f5de9caf57d2964071e9913072ce45.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3188
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description djlhqlvv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4376
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start djlhqlvv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2496
- 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:4640
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2896 -s 596
  2⤵
  - Program crash
  PID:2124

C:\Windows\SysWOW64\djlhqlvv\tyxvlrap.exe
C:\Windows\SysWOW64\djlhqlvv\tyxvlrap.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_50f5de9caf57d2964071e9913072ce45.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2436
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:832
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2436 -s 176
  2⤵
  - Program crash
  PID:232

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2896 -ip 2896
1⤵
PID:4248

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 2436 -ip 2436
1⤵
PID:3820

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\tyxvlrap.exe

Filesize
13.6MB

MD5
1e36485e52ba9880ffd38dd2e41c6a48

SHA1
6e3d2c59e91185ba087f2835be0ff1f51093b798

SHA256
5259286c31331eaa5728631ca64d29b0312cae6aa8d0dd45820d6520b4ed591f

SHA512
b553d206cde78dd7d7189eafb5baf33c9c81b5fb50fbf66c13958e5abcb8f5f22af2364e5636078d4dacead842aa1216084cf048e93e4b0a15b833e287ab4c71

Download Submit
memory/832-11-0x0000000000E30000-0x0000000000E45000-memory.dmp

Filesize
84KB

Download
memory/832-13-0x0000000000E30000-0x0000000000E45000-memory.dmp

Filesize
84KB

Download
memory/832-15-0x0000000000E30000-0x0000000000E45000-memory.dmp

Filesize
84KB

Download
memory/2436-14-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/2436-17-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/2896-1-0x0000000001910000-0x0000000001A10000-memory.dmp

Filesize
1024KB

Download
memory/2896-2-0x00000000032C0000-0x00000000032D3000-memory.dmp

Filesize
76KB

Download
memory/2896-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2896-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2896-9-0x00000000032C0000-0x00000000032D3000-memory.dmp

Filesize
76KB

Download
memory/2896-8-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads