tofsee | f8bd0553de1b1294e0479422afa9dfaf07838fa1aede326e71610e35b2de7ce4

General

Target

8f3c0b728b9123ddec273a9578aee70f_JaffaCakes118.exe
Size

10.8MB
MD5

8f3c0b728b9123ddec273a9578aee70f
SHA1

33dd24ff4dd00f287a8a17f4eb6914732ce6dbbe
SHA256

f8bd0553de1b1294e0479422afa9dfaf07838fa1aede326e71610e35b2de7ce4
SHA512

769272b5a61f121c63b3beb2c468be0571665906adc870966a13a530daf7ab30ca0dd4947b1164c56ca30e89154788093f2720382c1c2cd48f786fd70087a168
SSDEEP

24576:Qd6E8xWmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmG:e6b

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
644	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\eutltxb\ImagePath = "C:\\Windows\\SysWOW64\\eutltxb\\mpiqoqyi.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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	8f3c0b728b9123ddec273a9578aee70f_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
1076	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4100	mpiqoqyi.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4100 set thread context of 1076	4100	mpiqoqyi.exe	105

Launches sc.exe 3 IoCs

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

pid	Process
2188	sc.exe
3192	sc.exe
1092	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

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8f3c0b728b9123ddec273a9578aee70f_JaffaCakes118.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	mpiqoqyi.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3436 wrote to memory of 1428	3436	8f3c0b728b9123ddec273a9578aee70f_JaffaCakes118.exe	87
PID 3436 wrote to memory of 1428	3436	8f3c0b728b9123ddec273a9578aee70f_JaffaCakes118.exe	87
PID 3436 wrote to memory of 1428	3436	8f3c0b728b9123ddec273a9578aee70f_JaffaCakes118.exe	87
PID 3436 wrote to memory of 3000	3436	8f3c0b728b9123ddec273a9578aee70f_JaffaCakes118.exe	91
PID 3436 wrote to memory of 3000	3436	8f3c0b728b9123ddec273a9578aee70f_JaffaCakes118.exe	91
PID 3436 wrote to memory of 3000	3436	8f3c0b728b9123ddec273a9578aee70f_JaffaCakes118.exe	91
PID 3436 wrote to memory of 2188	3436	8f3c0b728b9123ddec273a9578aee70f_JaffaCakes118.exe	93
PID 3436 wrote to memory of 2188	3436	8f3c0b728b9123ddec273a9578aee70f_JaffaCakes118.exe	93
PID 3436 wrote to memory of 2188	3436	8f3c0b728b9123ddec273a9578aee70f_JaffaCakes118.exe	93
PID 3436 wrote to memory of 3192	3436	8f3c0b728b9123ddec273a9578aee70f_JaffaCakes118.exe	96
PID 3436 wrote to memory of 3192	3436	8f3c0b728b9123ddec273a9578aee70f_JaffaCakes118.exe	96
PID 3436 wrote to memory of 3192	3436	8f3c0b728b9123ddec273a9578aee70f_JaffaCakes118.exe	96
PID 3436 wrote to memory of 1092	3436	8f3c0b728b9123ddec273a9578aee70f_JaffaCakes118.exe	99
PID 3436 wrote to memory of 1092	3436	8f3c0b728b9123ddec273a9578aee70f_JaffaCakes118.exe	99
PID 3436 wrote to memory of 1092	3436	8f3c0b728b9123ddec273a9578aee70f_JaffaCakes118.exe	99
PID 3436 wrote to memory of 644	3436	8f3c0b728b9123ddec273a9578aee70f_JaffaCakes118.exe	102
PID 3436 wrote to memory of 644	3436	8f3c0b728b9123ddec273a9578aee70f_JaffaCakes118.exe	102
PID 3436 wrote to memory of 644	3436	8f3c0b728b9123ddec273a9578aee70f_JaffaCakes118.exe	102
PID 4100 wrote to memory of 1076	4100	mpiqoqyi.exe	105
PID 4100 wrote to memory of 1076	4100	mpiqoqyi.exe	105
PID 4100 wrote to memory of 1076	4100	mpiqoqyi.exe	105
PID 4100 wrote to memory of 1076	4100	mpiqoqyi.exe	105
PID 4100 wrote to memory of 1076	4100	mpiqoqyi.exe	105

C:\Users\Admin\AppData\Local\Temp\8f3c0b728b9123ddec273a9578aee70f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\8f3c0b728b9123ddec273a9578aee70f_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3436
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\eutltxb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1428
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mpiqoqyi.exe" C:\Windows\SysWOW64\eutltxb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3000
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create eutltxb binPath= "C:\Windows\SysWOW64\eutltxb\mpiqoqyi.exe /d\"C:\Users\Admin\AppData\Local\Temp\8f3c0b728b9123ddec273a9578aee70f_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2188
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description eutltxb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3192
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start eutltxb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1092
- 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:644

C:\Windows\SysWOW64\eutltxb\mpiqoqyi.exe
C:\Windows\SysWOW64\eutltxb\mpiqoqyi.exe /d"C:\Users\Admin\AppData\Local\Temp\8f3c0b728b9123ddec273a9578aee70f_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4100
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1076

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\mpiqoqyi.exe

Filesize
10.9MB

MD5
2a1eb830e1347cd029e1d451cb9a691d

SHA1
d3896678f7fbe51188e4226526509aeabc1fbc85

SHA256
c91a59c9455eb528a7daed18eaf91f7796ebc18d6c2123342f89fabb1da6bcf3

SHA512
de24aa4f847e966ec54c51ce3befc9fb075410e59cc61323aed10fe68ad6509be18c0387a2dcb4032467273754498949344bce75e5436cb14549449689cff749

Download Submit
memory/1076-14-0x00000000005A0000-0x00000000005B5000-memory.dmp

Filesize
84KB

Download
memory/1076-18-0x00000000005A0000-0x00000000005B5000-memory.dmp

Filesize
84KB

Download
memory/1076-17-0x00000000005A0000-0x00000000005B5000-memory.dmp

Filesize
84KB

Download
memory/3436-8-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/3436-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3436-1-0x00000000004C0000-0x00000000005C0000-memory.dmp

Filesize
1024KB

Download
memory/3436-9-0x00000000020B0000-0x00000000020C3000-memory.dmp

Filesize
76KB

Download
memory/3436-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3436-2-0x00000000020B0000-0x00000000020C3000-memory.dmp

Filesize
76KB

Download
memory/4100-12-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/4100-11-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/4100-13-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/4100-15-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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