tofsee | c49c72803c00204619f091dbe68e20c77d5bfcd7840134abbafa37a168500873

General

Target

JaffaCakes118_c49c72803c00204619f091dbe68e20c77d5bfcd7840134abbafa37a168500873.exe
Size

254KB
MD5

308d72a6ab750bb644ade8ba1fbbd53b
SHA1

e57b214def5be0f41fc93aada38954f79b705f4e
SHA256

c49c72803c00204619f091dbe68e20c77d5bfcd7840134abbafa37a168500873
SHA512

03531979a92ab7f5a9de753e8c11b1a8263c6b3d4e461ee2246386ddbfb10dfec6d67eae531c326c447b73fe1b6136f25d1419c5adc229c3595cf78da76889c3
SSDEEP

6144:EvzGRGQGlJXwcXXqMaul4TFOoJyDIEMgUpSulOP3U:ErEPGlJXwsXOjTkVDIEMg8fw

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
5060	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\bpolyvtw\ImagePath = "C:\\Windows\\SysWOW64\\bpolyvtw\\vlllarxp.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_c49c72803c00204619f091dbe68e20c77d5bfcd7840134abbafa37a168500873.exe

Deletes itself 1 IoCs

pid	Process
3212	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1164	vlllarxp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1164 set thread context of 3212	1164	vlllarxp.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
5012	sc.exe
1244	sc.exe
1404	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
2344	4736	WerFault.exe	83
3448	1164	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	JaffaCakes118_c49c72803c00204619f091dbe68e20c77d5bfcd7840134abbafa37a168500873.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	cmd.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vlllarxp.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4736 wrote to memory of 4804	4736	JaffaCakes118_c49c72803c00204619f091dbe68e20c77d5bfcd7840134abbafa37a168500873.exe	84
PID 4736 wrote to memory of 4804	4736	JaffaCakes118_c49c72803c00204619f091dbe68e20c77d5bfcd7840134abbafa37a168500873.exe	84
PID 4736 wrote to memory of 4804	4736	JaffaCakes118_c49c72803c00204619f091dbe68e20c77d5bfcd7840134abbafa37a168500873.exe	84
PID 4736 wrote to memory of 4772	4736	JaffaCakes118_c49c72803c00204619f091dbe68e20c77d5bfcd7840134abbafa37a168500873.exe	86
PID 4736 wrote to memory of 4772	4736	JaffaCakes118_c49c72803c00204619f091dbe68e20c77d5bfcd7840134abbafa37a168500873.exe	86
PID 4736 wrote to memory of 4772	4736	JaffaCakes118_c49c72803c00204619f091dbe68e20c77d5bfcd7840134abbafa37a168500873.exe	86
PID 4736 wrote to memory of 5012	4736	JaffaCakes118_c49c72803c00204619f091dbe68e20c77d5bfcd7840134abbafa37a168500873.exe	88
PID 4736 wrote to memory of 5012	4736	JaffaCakes118_c49c72803c00204619f091dbe68e20c77d5bfcd7840134abbafa37a168500873.exe	88
PID 4736 wrote to memory of 5012	4736	JaffaCakes118_c49c72803c00204619f091dbe68e20c77d5bfcd7840134abbafa37a168500873.exe	88
PID 4736 wrote to memory of 1244	4736	JaffaCakes118_c49c72803c00204619f091dbe68e20c77d5bfcd7840134abbafa37a168500873.exe	90
PID 4736 wrote to memory of 1244	4736	JaffaCakes118_c49c72803c00204619f091dbe68e20c77d5bfcd7840134abbafa37a168500873.exe	90
PID 4736 wrote to memory of 1244	4736	JaffaCakes118_c49c72803c00204619f091dbe68e20c77d5bfcd7840134abbafa37a168500873.exe	90
PID 4736 wrote to memory of 1404	4736	JaffaCakes118_c49c72803c00204619f091dbe68e20c77d5bfcd7840134abbafa37a168500873.exe	93
PID 4736 wrote to memory of 1404	4736	JaffaCakes118_c49c72803c00204619f091dbe68e20c77d5bfcd7840134abbafa37a168500873.exe	93
PID 4736 wrote to memory of 1404	4736	JaffaCakes118_c49c72803c00204619f091dbe68e20c77d5bfcd7840134abbafa37a168500873.exe	93
PID 4736 wrote to memory of 5060	4736	JaffaCakes118_c49c72803c00204619f091dbe68e20c77d5bfcd7840134abbafa37a168500873.exe	96
PID 4736 wrote to memory of 5060	4736	JaffaCakes118_c49c72803c00204619f091dbe68e20c77d5bfcd7840134abbafa37a168500873.exe	96
PID 4736 wrote to memory of 5060	4736	JaffaCakes118_c49c72803c00204619f091dbe68e20c77d5bfcd7840134abbafa37a168500873.exe	96
PID 1164 wrote to memory of 3212	1164	vlllarxp.exe	102
PID 1164 wrote to memory of 3212	1164	vlllarxp.exe	102
PID 1164 wrote to memory of 3212	1164	vlllarxp.exe	102
PID 1164 wrote to memory of 3212	1164	vlllarxp.exe	102
PID 1164 wrote to memory of 3212	1164	vlllarxp.exe	102

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c49c72803c00204619f091dbe68e20c77d5bfcd7840134abbafa37a168500873.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c49c72803c00204619f091dbe68e20c77d5bfcd7840134abbafa37a168500873.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\bpolyvtw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4804
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vlllarxp.exe" C:\Windows\SysWOW64\bpolyvtw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4772
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bpolyvtw binPath= "C:\Windows\SysWOW64\bpolyvtw\vlllarxp.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c49c72803c00204619f091dbe68e20c77d5bfcd7840134abbafa37a168500873.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5012
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bpolyvtw "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1244
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bpolyvtw
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1404
- 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:5060
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4736 -s 640
  2⤵
  - Program crash
  PID:2344

C:\Windows\SysWOW64\bpolyvtw\vlllarxp.exe
C:\Windows\SysWOW64\bpolyvtw\vlllarxp.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c49c72803c00204619f091dbe68e20c77d5bfcd7840134abbafa37a168500873.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1164
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3212
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1164 -s 512
  2⤵
  - Program crash
  PID:3448

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4736 -ip 4736
1⤵
PID:2592

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1164 -ip 1164
1⤵
PID:3680

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\vlllarxp.exe

Filesize
11.9MB

MD5
7e42e81276ecaa2670c7a37870069ae8

SHA1
8a2dedc235f78da618de3dee5783f1c8022543fa

SHA256
60e7f820f597c0fe17beed746c0381dfc4bbe6ec84f2285714d7c9f163276b32

SHA512
d8d6c72c75c4c52e04e870be2b9b2a93107399ea85626aab6a8ae32892384188cc145d4ebcb6b1aaee2c05a606a3367994119297d29dc60fec27267026271725

Download Submit
memory/1164-16-0x0000000000400000-0x000000000086F000-memory.dmp

Filesize
4.4MB

Download
memory/1164-11-0x0000000000400000-0x000000000086F000-memory.dmp

Filesize
4.4MB

Download
memory/1164-12-0x0000000000400000-0x000000000086F000-memory.dmp

Filesize
4.4MB

Download
memory/1164-19-0x0000000000400000-0x000000000086F000-memory.dmp

Filesize
4.4MB

Download
memory/3212-13-0x0000000000BB0000-0x0000000000BC5000-memory.dmp

Filesize
84KB

Download
memory/3212-15-0x0000000000BB0000-0x0000000000BC5000-memory.dmp

Filesize
84KB

Download
memory/3212-17-0x0000000000BB0000-0x0000000000BC5000-memory.dmp

Filesize
84KB

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

Filesize
84KB

Download
memory/4736-1-0x00000000008A0000-0x00000000009A0000-memory.dmp

Filesize
1024KB

Download
memory/4736-8-0x0000000000400000-0x000000000086F000-memory.dmp

Filesize
4.4MB

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

Filesize
84KB

Download
memory/4736-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4736-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads