tofsee | 86054a9f4dc9fc201137e9dabab67b47541cad795c5f9c307aebb95a74032385

General

Target

JaffaCakes118_86054a9f4dc9fc201137e9dabab67b47541cad795c5f9c307aebb95a74032385.exe
Size

285KB
MD5

020b25befc4912d8e055a74e89795964
SHA1

8b51f165c506a3c002345828a6fdf6458a20ad00
SHA256

86054a9f4dc9fc201137e9dabab67b47541cad795c5f9c307aebb95a74032385
SHA512

738ab2c84b1071de84983f896e26d6754cc052fec96580cc21af96fb2452d8f053a3d60cb4572f3208dee683031f58803c770e22901f467cee9b6b888bd3551d
SSDEEP

6144:qBL5PZaxPmyPhDh8vICUCe02DuMY0Et6Hdz:GxaxPZh1iICUCe02HFEwHdz

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
868	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\gxzvhgzt\ImagePath = "C:\\Windows\\SysWOW64\\gxzvhgzt\\gcrrwdja.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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	JaffaCakes118_86054a9f4dc9fc201137e9dabab67b47541cad795c5f9c307aebb95a74032385.exe

Deletes itself 1 IoCs

pid	Process
4176	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1440	gcrrwdja.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1440 set thread context of 4176	1440	gcrrwdja.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
4764	sc.exe
3804	sc.exe
1332	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
1584	4812	WerFault.exe	82
2084	1440	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gcrrwdja.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_86054a9f4dc9fc201137e9dabab67b47541cad795c5f9c307aebb95a74032385.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 4812 wrote to memory of 1340	4812	JaffaCakes118_86054a9f4dc9fc201137e9dabab67b47541cad795c5f9c307aebb95a74032385.exe	83
PID 4812 wrote to memory of 1340	4812	JaffaCakes118_86054a9f4dc9fc201137e9dabab67b47541cad795c5f9c307aebb95a74032385.exe	83
PID 4812 wrote to memory of 1340	4812	JaffaCakes118_86054a9f4dc9fc201137e9dabab67b47541cad795c5f9c307aebb95a74032385.exe	83
PID 4812 wrote to memory of 3448	4812	JaffaCakes118_86054a9f4dc9fc201137e9dabab67b47541cad795c5f9c307aebb95a74032385.exe	85
PID 4812 wrote to memory of 3448	4812	JaffaCakes118_86054a9f4dc9fc201137e9dabab67b47541cad795c5f9c307aebb95a74032385.exe	85
PID 4812 wrote to memory of 3448	4812	JaffaCakes118_86054a9f4dc9fc201137e9dabab67b47541cad795c5f9c307aebb95a74032385.exe	85
PID 4812 wrote to memory of 3804	4812	JaffaCakes118_86054a9f4dc9fc201137e9dabab67b47541cad795c5f9c307aebb95a74032385.exe	87
PID 4812 wrote to memory of 3804	4812	JaffaCakes118_86054a9f4dc9fc201137e9dabab67b47541cad795c5f9c307aebb95a74032385.exe	87
PID 4812 wrote to memory of 3804	4812	JaffaCakes118_86054a9f4dc9fc201137e9dabab67b47541cad795c5f9c307aebb95a74032385.exe	87
PID 4812 wrote to memory of 1332	4812	JaffaCakes118_86054a9f4dc9fc201137e9dabab67b47541cad795c5f9c307aebb95a74032385.exe	90
PID 4812 wrote to memory of 1332	4812	JaffaCakes118_86054a9f4dc9fc201137e9dabab67b47541cad795c5f9c307aebb95a74032385.exe	90
PID 4812 wrote to memory of 1332	4812	JaffaCakes118_86054a9f4dc9fc201137e9dabab67b47541cad795c5f9c307aebb95a74032385.exe	90
PID 4812 wrote to memory of 4764	4812	JaffaCakes118_86054a9f4dc9fc201137e9dabab67b47541cad795c5f9c307aebb95a74032385.exe	92
PID 4812 wrote to memory of 4764	4812	JaffaCakes118_86054a9f4dc9fc201137e9dabab67b47541cad795c5f9c307aebb95a74032385.exe	92
PID 4812 wrote to memory of 4764	4812	JaffaCakes118_86054a9f4dc9fc201137e9dabab67b47541cad795c5f9c307aebb95a74032385.exe	92
PID 4812 wrote to memory of 868	4812	JaffaCakes118_86054a9f4dc9fc201137e9dabab67b47541cad795c5f9c307aebb95a74032385.exe	95
PID 4812 wrote to memory of 868	4812	JaffaCakes118_86054a9f4dc9fc201137e9dabab67b47541cad795c5f9c307aebb95a74032385.exe	95
PID 4812 wrote to memory of 868	4812	JaffaCakes118_86054a9f4dc9fc201137e9dabab67b47541cad795c5f9c307aebb95a74032385.exe	95
PID 1440 wrote to memory of 4176	1440	gcrrwdja.exe	101
PID 1440 wrote to memory of 4176	1440	gcrrwdja.exe	101
PID 1440 wrote to memory of 4176	1440	gcrrwdja.exe	101
PID 1440 wrote to memory of 4176	1440	gcrrwdja.exe	101
PID 1440 wrote to memory of 4176	1440	gcrrwdja.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_86054a9f4dc9fc201137e9dabab67b47541cad795c5f9c307aebb95a74032385.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_86054a9f4dc9fc201137e9dabab67b47541cad795c5f9c307aebb95a74032385.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4812
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gxzvhgzt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1340
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gcrrwdja.exe" C:\Windows\SysWOW64\gxzvhgzt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3448
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create gxzvhgzt binPath= "C:\Windows\SysWOW64\gxzvhgzt\gcrrwdja.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_86054a9f4dc9fc201137e9dabab67b47541cad795c5f9c307aebb95a74032385.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3804
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description gxzvhgzt "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1332
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start gxzvhgzt
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4764
- 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:868
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4812 -s 1032
  2⤵
  - Program crash
  PID:1584

C:\Windows\SysWOW64\gxzvhgzt\gcrrwdja.exe
C:\Windows\SysWOW64\gxzvhgzt\gcrrwdja.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_86054a9f4dc9fc201137e9dabab67b47541cad795c5f9c307aebb95a74032385.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1440
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4176
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1440 -s 508
  2⤵
  - Program crash
  PID:2084

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 4812 -ip 4812
1⤵
PID:2344

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1440 -ip 1440
1⤵
PID:4936

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

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Downloads

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

Filesize
10.6MB

MD5
9d56803e190ec8e936b2fe6797439b90

SHA1
9f501d089b4138a29e3e4623ad3c9814283a7ac0

SHA256
289db312a712447bef91840a1f500429e2c6d8fff8eef65ea05bd97a4804aba8

SHA512
f8fa585956f8300c081008994963384bd8a47def522b624f4834c1e00d25c55766f48bc2ebb063542575b7350363c88951a8fe320e403bdb651ecae8af446bde

Download Submit
memory/1440-15-0x0000000000400000-0x0000000002B40000-memory.dmp

Filesize
39.2MB

Download
memory/4176-11-0x0000000000F60000-0x0000000000F75000-memory.dmp

Filesize
84KB

Download
memory/4176-13-0x0000000000F60000-0x0000000000F75000-memory.dmp

Filesize
84KB

Download
memory/4176-14-0x0000000000F60000-0x0000000000F75000-memory.dmp

Filesize
84KB

Download
memory/4812-1-0x0000000002DD0000-0x0000000002ED0000-memory.dmp

Filesize
1024KB

Download
memory/4812-2-0x0000000002DA0000-0x0000000002DB3000-memory.dmp

Filesize
76KB

Download
memory/4812-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4812-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4812-8-0x0000000002DA0000-0x0000000002DB3000-memory.dmp

Filesize
76KB

Download
memory/4812-7-0x0000000000400000-0x0000000002B40000-memory.dmp

Filesize
39.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads