tofsee | 0d585f9d23e7debf3ba7a4c9ed10ccf37b78e19b00a7a65dc5c2231a56c0e61b

General

Target

609150c7dd4a20fa574d34e95e0aa3bc_JaffaCakes118.exe
Size

10.8MB
MD5

609150c7dd4a20fa574d34e95e0aa3bc
SHA1

db7b53d7a3f2f73cca80c70a74ecfc4e4b42bb90
SHA256

0d585f9d23e7debf3ba7a4c9ed10ccf37b78e19b00a7a65dc5c2231a56c0e61b
SHA512

0b73c269886fd4059377f86183dad5ca1e3cde4e031664d8a4b7a270b80c1cc1534091c305c7905bb239abb697c3f003f2f7553316c53bdb135e3ce28d637c2e
SSDEEP

24576:vkp7SCOI1SDGI1SDGI1SDGI1SDGI1SDGI1SDGI1SDGI1SDGI1SDGI1SDGI1SDGIP:vG

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
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
4100	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\jkxjjqka\ImagePath = "C:\\Windows\\SysWOW64\\jkxjjqka\\pbwtazzn.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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	609150c7dd4a20fa574d34e95e0aa3bc_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2660	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1184	pbwtazzn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1184 set thread context of 2660	1184	pbwtazzn.exe	107

Launches sc.exe 3 IoCs

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

pid	Process
2900	sc.exe
4760	sc.exe
4876	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
1212	2556	WerFault.exe	83
2120	1184	WerFault.exe	101

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	609150c7dd4a20fa574d34e95e0aa3bc_JaffaCakes118.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	pbwtazzn.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	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2556 wrote to memory of 1624	2556	609150c7dd4a20fa574d34e95e0aa3bc_JaffaCakes118.exe	87
PID 2556 wrote to memory of 1624	2556	609150c7dd4a20fa574d34e95e0aa3bc_JaffaCakes118.exe	87
PID 2556 wrote to memory of 1624	2556	609150c7dd4a20fa574d34e95e0aa3bc_JaffaCakes118.exe	87
PID 2556 wrote to memory of 1540	2556	609150c7dd4a20fa574d34e95e0aa3bc_JaffaCakes118.exe	89
PID 2556 wrote to memory of 1540	2556	609150c7dd4a20fa574d34e95e0aa3bc_JaffaCakes118.exe	89
PID 2556 wrote to memory of 1540	2556	609150c7dd4a20fa574d34e95e0aa3bc_JaffaCakes118.exe	89
PID 2556 wrote to memory of 2900	2556	609150c7dd4a20fa574d34e95e0aa3bc_JaffaCakes118.exe	93
PID 2556 wrote to memory of 2900	2556	609150c7dd4a20fa574d34e95e0aa3bc_JaffaCakes118.exe	93
PID 2556 wrote to memory of 2900	2556	609150c7dd4a20fa574d34e95e0aa3bc_JaffaCakes118.exe	93
PID 2556 wrote to memory of 4760	2556	609150c7dd4a20fa574d34e95e0aa3bc_JaffaCakes118.exe	95
PID 2556 wrote to memory of 4760	2556	609150c7dd4a20fa574d34e95e0aa3bc_JaffaCakes118.exe	95
PID 2556 wrote to memory of 4760	2556	609150c7dd4a20fa574d34e95e0aa3bc_JaffaCakes118.exe	95
PID 2556 wrote to memory of 4876	2556	609150c7dd4a20fa574d34e95e0aa3bc_JaffaCakes118.exe	99
PID 2556 wrote to memory of 4876	2556	609150c7dd4a20fa574d34e95e0aa3bc_JaffaCakes118.exe	99
PID 2556 wrote to memory of 4876	2556	609150c7dd4a20fa574d34e95e0aa3bc_JaffaCakes118.exe	99
PID 2556 wrote to memory of 4100	2556	609150c7dd4a20fa574d34e95e0aa3bc_JaffaCakes118.exe	102
PID 2556 wrote to memory of 4100	2556	609150c7dd4a20fa574d34e95e0aa3bc_JaffaCakes118.exe	102
PID 2556 wrote to memory of 4100	2556	609150c7dd4a20fa574d34e95e0aa3bc_JaffaCakes118.exe	102
PID 1184 wrote to memory of 2660	1184	pbwtazzn.exe	107
PID 1184 wrote to memory of 2660	1184	pbwtazzn.exe	107
PID 1184 wrote to memory of 2660	1184	pbwtazzn.exe	107
PID 1184 wrote to memory of 2660	1184	pbwtazzn.exe	107
PID 1184 wrote to memory of 2660	1184	pbwtazzn.exe	107

C:\Users\Admin\AppData\Local\Temp\609150c7dd4a20fa574d34e95e0aa3bc_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\609150c7dd4a20fa574d34e95e0aa3bc_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2556
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jkxjjqka\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1624
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pbwtazzn.exe" C:\Windows\SysWOW64\jkxjjqka\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1540
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create jkxjjqka binPath= "C:\Windows\SysWOW64\jkxjjqka\pbwtazzn.exe /d\"C:\Users\Admin\AppData\Local\Temp\609150c7dd4a20fa574d34e95e0aa3bc_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2900
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description jkxjjqka "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4760
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start jkxjjqka
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4876
- 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:4100
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2556 -s 652
  2⤵
  - Program crash
  PID:1212

C:\Windows\SysWOW64\jkxjjqka\pbwtazzn.exe
C:\Windows\SysWOW64\jkxjjqka\pbwtazzn.exe /d"C:\Users\Admin\AppData\Local\Temp\609150c7dd4a20fa574d34e95e0aa3bc_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1184
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2660
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1184 -s 508
  2⤵
  - Program crash
  PID:2120

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2556 -ip 2556
1⤵
PID:2084

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 1184 -ip 1184
1⤵
PID:2684

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\pbwtazzn.exe

Filesize
12.4MB

MD5
f79da62f56cb59582e2f2dfbe70e79c0

SHA1
69144a1b909027f055d4df9a11d0e0c8edca8f06

SHA256
4a8f1c48f4221af81996219f8cf6d1d54afba59a0d234569c5185c0f128f3c9a

SHA512
d737336111198adfb917064c5182fad5af514c9f49951265964d6e4168a8e161f74b8bd05f5151d08fa4ce67ff7a5210fcd554e929dc36edafc1171bb748280a

Download Submit
memory/1184-13-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1184-11-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1184-12-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1184-18-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2556-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2556-2-0x0000000002190000-0x00000000021A3000-memory.dmp

Filesize
76KB

Download
memory/2556-9-0x0000000002190000-0x00000000021A3000-memory.dmp

Filesize
76KB

Download
memory/2556-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2556-8-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2556-1-0x0000000000570000-0x0000000000670000-memory.dmp

Filesize
1024KB

Download
memory/2660-14-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/2660-16-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/2660-17-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads