tofsee | 917368c18dca5da70a2ce08f415dce2a4224bcb6d59af20d5791db873d364cad

General

Target

JaffaCakes118_917368c18dca5da70a2ce08f415dce2a4224bcb6d59af20d5791db873d364cad.exe
Size

198KB
MD5

877d8205339dfa2e4ecfb93d63f7fa23
SHA1

3aa8853f92a19679cb10c325a885358713d9a00c
SHA256

917368c18dca5da70a2ce08f415dce2a4224bcb6d59af20d5791db873d364cad
SHA512

0a410290fad21ded397a6571e996c75f299833087f850cff0fa74cbadf6186a4a281828e6dcee96dcec94eabd28b1ed67c6a883f5f9d5afdacbb08533b7fadc7
SSDEEP

3072:LHzWdaO0VDX4runRUEI5lkrcPI1ZeVRL8EuSzgz:LTWdabDXvRrncPI1qNuSzy

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
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
2076	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\eieblalz\ImagePath = "C:\\Windows\\SysWOW64\\eieblalz\\oezlfrvn.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_917368c18dca5da70a2ce08f415dce2a4224bcb6d59af20d5791db873d364cad.exe

Deletes itself 1 IoCs

pid	Process
2600	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
456	oezlfrvn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 456 set thread context of 2600	456	oezlfrvn.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
1624	sc.exe
1320	sc.exe
4420	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
4020	4188	WerFault.exe	84
1316	456	WerFault.exe	95

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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	oezlfrvn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_917368c18dca5da70a2ce08f415dce2a4224bcb6d59af20d5791db873d364cad.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4188 wrote to memory of 2852	4188	JaffaCakes118_917368c18dca5da70a2ce08f415dce2a4224bcb6d59af20d5791db873d364cad.exe	85
PID 4188 wrote to memory of 2852	4188	JaffaCakes118_917368c18dca5da70a2ce08f415dce2a4224bcb6d59af20d5791db873d364cad.exe	85
PID 4188 wrote to memory of 2852	4188	JaffaCakes118_917368c18dca5da70a2ce08f415dce2a4224bcb6d59af20d5791db873d364cad.exe	85
PID 4188 wrote to memory of 1552	4188	JaffaCakes118_917368c18dca5da70a2ce08f415dce2a4224bcb6d59af20d5791db873d364cad.exe	87
PID 4188 wrote to memory of 1552	4188	JaffaCakes118_917368c18dca5da70a2ce08f415dce2a4224bcb6d59af20d5791db873d364cad.exe	87
PID 4188 wrote to memory of 1552	4188	JaffaCakes118_917368c18dca5da70a2ce08f415dce2a4224bcb6d59af20d5791db873d364cad.exe	87
PID 4188 wrote to memory of 1624	4188	JaffaCakes118_917368c18dca5da70a2ce08f415dce2a4224bcb6d59af20d5791db873d364cad.exe	89
PID 4188 wrote to memory of 1624	4188	JaffaCakes118_917368c18dca5da70a2ce08f415dce2a4224bcb6d59af20d5791db873d364cad.exe	89
PID 4188 wrote to memory of 1624	4188	JaffaCakes118_917368c18dca5da70a2ce08f415dce2a4224bcb6d59af20d5791db873d364cad.exe	89
PID 4188 wrote to memory of 1320	4188	JaffaCakes118_917368c18dca5da70a2ce08f415dce2a4224bcb6d59af20d5791db873d364cad.exe	91
PID 4188 wrote to memory of 1320	4188	JaffaCakes118_917368c18dca5da70a2ce08f415dce2a4224bcb6d59af20d5791db873d364cad.exe	91
PID 4188 wrote to memory of 1320	4188	JaffaCakes118_917368c18dca5da70a2ce08f415dce2a4224bcb6d59af20d5791db873d364cad.exe	91
PID 4188 wrote to memory of 4420	4188	JaffaCakes118_917368c18dca5da70a2ce08f415dce2a4224bcb6d59af20d5791db873d364cad.exe	93
PID 4188 wrote to memory of 4420	4188	JaffaCakes118_917368c18dca5da70a2ce08f415dce2a4224bcb6d59af20d5791db873d364cad.exe	93
PID 4188 wrote to memory of 4420	4188	JaffaCakes118_917368c18dca5da70a2ce08f415dce2a4224bcb6d59af20d5791db873d364cad.exe	93
PID 4188 wrote to memory of 2076	4188	JaffaCakes118_917368c18dca5da70a2ce08f415dce2a4224bcb6d59af20d5791db873d364cad.exe	96
PID 4188 wrote to memory of 2076	4188	JaffaCakes118_917368c18dca5da70a2ce08f415dce2a4224bcb6d59af20d5791db873d364cad.exe	96
PID 4188 wrote to memory of 2076	4188	JaffaCakes118_917368c18dca5da70a2ce08f415dce2a4224bcb6d59af20d5791db873d364cad.exe	96
PID 456 wrote to memory of 2600	456	oezlfrvn.exe	102
PID 456 wrote to memory of 2600	456	oezlfrvn.exe	102
PID 456 wrote to memory of 2600	456	oezlfrvn.exe	102
PID 456 wrote to memory of 2600	456	oezlfrvn.exe	102
PID 456 wrote to memory of 2600	456	oezlfrvn.exe	102

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_917368c18dca5da70a2ce08f415dce2a4224bcb6d59af20d5791db873d364cad.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_917368c18dca5da70a2ce08f415dce2a4224bcb6d59af20d5791db873d364cad.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4188
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\eieblalz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2852
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\oezlfrvn.exe" C:\Windows\SysWOW64\eieblalz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1552
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create eieblalz binPath= "C:\Windows\SysWOW64\eieblalz\oezlfrvn.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_917368c18dca5da70a2ce08f415dce2a4224bcb6d59af20d5791db873d364cad.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1624
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description eieblalz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1320
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start eieblalz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4420
- 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:2076
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4188 -s 1040
  2⤵
  - Program crash
  PID:4020

C:\Windows\SysWOW64\eieblalz\oezlfrvn.exe
C:\Windows\SysWOW64\eieblalz\oezlfrvn.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_917368c18dca5da70a2ce08f415dce2a4224bcb6d59af20d5791db873d364cad.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:456
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2600
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 456 -s 512
  2⤵
  - Program crash
  PID:1316

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4188 -ip 4188
1⤵
PID:4804

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 456 -ip 456
1⤵
PID:4212

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\oezlfrvn.exe

Filesize
13.9MB

MD5
51fd778cca9b4fe00356c1256b792df3

SHA1
e2785d08f51c64412446dadb667fc56e3acbb580

SHA256
500020fbfef7c5e86f3f94b163170b5bb4f8fc66b64d388ef6b341437d72d994

SHA512
e8d03648804d3a3235ad35ac07b2e846dd88d036194bb179acf97b29d2160043bd93e37d2a46111b3ee858d03ff4431f02824bfd5181fddb039353b8eea6e9f6

Download Submit
memory/456-13-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download
memory/456-11-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download
memory/456-12-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download
memory/456-18-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download
memory/2600-14-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2600-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2600-17-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4188-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4188-2-0x0000000002040000-0x0000000002053000-memory.dmp

Filesize
76KB

Download
memory/4188-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4188-9-0x0000000002040000-0x0000000002053000-memory.dmp

Filesize
76KB

Download
memory/4188-8-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download
memory/4188-1-0x0000000000450000-0x0000000000550000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads