tofsee | ddd3d9d9266d15d5d25ba601f36f9bdd888862caf3b3487cf83502a274b6c87e

General

Target

99e8a071ecaa06ac8d1953471dd2988c_JaffaCakes118.exe
Size

10.1MB
MD5

99e8a071ecaa06ac8d1953471dd2988c
SHA1

52907a9b570d1c43dfa27e8e93347abdda72ab34
SHA256

ddd3d9d9266d15d5d25ba601f36f9bdd888862caf3b3487cf83502a274b6c87e
SHA512

080b4ee8bd25d021cee590dd313f4e9e13dd1263da7e15459a06ca81f38583a2a1949ff0ca40afd1d3a9cb4cb726f123661f4a395d9af67ccad84fe00d95187d
SSDEEP

49152:nT81MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMD:nT8

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
2296	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\otpetban\ImagePath = "C:\\Windows\\SysWOW64\\otpetban\\naayxyll.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	99e8a071ecaa06ac8d1953471dd2988c_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
3120	naayxyll.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3120 set thread context of 4112	3120	naayxyll.exe	99

Launches sc.exe 3 IoCs

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

pid	Process
1828	sc.exe
4584	sc.exe
3692	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	naayxyll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	99e8a071ecaa06ac8d1953471dd2988c_JaffaCakes118.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1528 wrote to memory of 320	1528	99e8a071ecaa06ac8d1953471dd2988c_JaffaCakes118.exe	82
PID 1528 wrote to memory of 320	1528	99e8a071ecaa06ac8d1953471dd2988c_JaffaCakes118.exe	82
PID 1528 wrote to memory of 320	1528	99e8a071ecaa06ac8d1953471dd2988c_JaffaCakes118.exe	82
PID 1528 wrote to memory of 3172	1528	99e8a071ecaa06ac8d1953471dd2988c_JaffaCakes118.exe	84
PID 1528 wrote to memory of 3172	1528	99e8a071ecaa06ac8d1953471dd2988c_JaffaCakes118.exe	84
PID 1528 wrote to memory of 3172	1528	99e8a071ecaa06ac8d1953471dd2988c_JaffaCakes118.exe	84
PID 1528 wrote to memory of 1828	1528	99e8a071ecaa06ac8d1953471dd2988c_JaffaCakes118.exe	88
PID 1528 wrote to memory of 1828	1528	99e8a071ecaa06ac8d1953471dd2988c_JaffaCakes118.exe	88
PID 1528 wrote to memory of 1828	1528	99e8a071ecaa06ac8d1953471dd2988c_JaffaCakes118.exe	88
PID 1528 wrote to memory of 4584	1528	99e8a071ecaa06ac8d1953471dd2988c_JaffaCakes118.exe	90
PID 1528 wrote to memory of 4584	1528	99e8a071ecaa06ac8d1953471dd2988c_JaffaCakes118.exe	90
PID 1528 wrote to memory of 4584	1528	99e8a071ecaa06ac8d1953471dd2988c_JaffaCakes118.exe	90
PID 1528 wrote to memory of 3692	1528	99e8a071ecaa06ac8d1953471dd2988c_JaffaCakes118.exe	93
PID 1528 wrote to memory of 3692	1528	99e8a071ecaa06ac8d1953471dd2988c_JaffaCakes118.exe	93
PID 1528 wrote to memory of 3692	1528	99e8a071ecaa06ac8d1953471dd2988c_JaffaCakes118.exe	93
PID 1528 wrote to memory of 2296	1528	99e8a071ecaa06ac8d1953471dd2988c_JaffaCakes118.exe	97
PID 1528 wrote to memory of 2296	1528	99e8a071ecaa06ac8d1953471dd2988c_JaffaCakes118.exe	97
PID 1528 wrote to memory of 2296	1528	99e8a071ecaa06ac8d1953471dd2988c_JaffaCakes118.exe	97
PID 3120 wrote to memory of 4112	3120	naayxyll.exe	99
PID 3120 wrote to memory of 4112	3120	naayxyll.exe	99
PID 3120 wrote to memory of 4112	3120	naayxyll.exe	99
PID 3120 wrote to memory of 4112	3120	naayxyll.exe	99
PID 3120 wrote to memory of 4112	3120	naayxyll.exe	99

C:\Users\Admin\AppData\Local\Temp\99e8a071ecaa06ac8d1953471dd2988c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\99e8a071ecaa06ac8d1953471dd2988c_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1528
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\otpetban\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:320
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\naayxyll.exe" C:\Windows\SysWOW64\otpetban\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3172
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create otpetban binPath= "C:\Windows\SysWOW64\otpetban\naayxyll.exe /d\"C:\Users\Admin\AppData\Local\Temp\99e8a071ecaa06ac8d1953471dd2988c_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1828
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description otpetban "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4584
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start otpetban
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3692
- 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:2296

C:\Windows\SysWOW64\otpetban\naayxyll.exe
C:\Windows\SysWOW64\otpetban\naayxyll.exe /d"C:\Users\Admin\AppData\Local\Temp\99e8a071ecaa06ac8d1953471dd2988c_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3120
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - System Location Discovery: System Language Discovery
  PID:4112

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\naayxyll.exe

Filesize
14.5MB

MD5
2c8932c443a2bed979daa4b3d95fb75b

SHA1
f76cc05d7bfc720c48f3c7d8b870070de0556b25

SHA256
20459b91fbcffe86e86e8299ddc59f0349275a82c1dd7b70ae3f7b37537c16fd

SHA512
cbf420d679cdcde13ef1074b1386a7bfc83360c60c4e2fb6e728df9e04aae023cf552e82045dff32b1f9e373b3a0fbce0129eb3fe70b278857252039a45898c2

Download Submit
memory/1528-14-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1528-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1528-1-0x0000000000540000-0x0000000000640000-memory.dmp

Filesize
1024KB

Download
memory/1528-12-0x0000000000540000-0x0000000000640000-memory.dmp

Filesize
1024KB

Download
memory/1528-13-0x00000000021B0000-0x00000000021C3000-memory.dmp

Filesize
76KB

Download
memory/1528-2-0x00000000021B0000-0x00000000021C3000-memory.dmp

Filesize
76KB

Download
memory/1528-15-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3120-8-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3120-9-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3120-16-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4112-10-0x0000000000FD0000-0x0000000000FE5000-memory.dmp

Filesize
84KB

Download
memory/4112-18-0x0000000000FD0000-0x0000000000FE5000-memory.dmp

Filesize
84KB

Download
memory/4112-19-0x0000000000FD0000-0x0000000000FE5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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