tofsee | 93c57d1b6044486f8962a08e6ce7c774d54c0dc8fad2da404eb99e451b75b2e9

General

Target

JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe
Size

14.7MB
MD5

85fc255b144ad1bae941cb10f76c562d
SHA1

6961b75a7e5e1720c6fd01b4979c77f3269e7aec
SHA256

93c57d1b6044486f8962a08e6ce7c774d54c0dc8fad2da404eb99e451b75b2e9
SHA512

e7e6ce112594f2d6a597ecd063e2797f1695be72dbd59316410d186be6e8876116662aa95d9ad25107a079b04eaffa7a7c039a99f2ef2fa15ae4681bace3f819
SSDEEP

98304:/UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUc:

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
3116	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\efqunceb\ImagePath = "C:\\Windows\\SysWOW64\\efqunceb\\knlgahrb.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_85fc255b144ad1bae941cb10f76c562d.exe

Deletes itself 1 IoCs

pid	Process
60	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1468	knlgahrb.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1468 set thread context of 60	1468	knlgahrb.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
4856	sc.exe
1540	sc.exe
1676	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
1696	1100	WerFault.exe	82
3532	1468	WerFault.exe	94

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	knlgahrb.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	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1100 wrote to memory of 3636	1100	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	83
PID 1100 wrote to memory of 3636	1100	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	83
PID 1100 wrote to memory of 3636	1100	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	83
PID 1100 wrote to memory of 1932	1100	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	85
PID 1100 wrote to memory of 1932	1100	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	85
PID 1100 wrote to memory of 1932	1100	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	85
PID 1100 wrote to memory of 4856	1100	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	88
PID 1100 wrote to memory of 4856	1100	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	88
PID 1100 wrote to memory of 4856	1100	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	88
PID 1100 wrote to memory of 1540	1100	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	90
PID 1100 wrote to memory of 1540	1100	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	90
PID 1100 wrote to memory of 1540	1100	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	90
PID 1100 wrote to memory of 1676	1100	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	92
PID 1100 wrote to memory of 1676	1100	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	92
PID 1100 wrote to memory of 1676	1100	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	92
PID 1100 wrote to memory of 3116	1100	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	95
PID 1100 wrote to memory of 3116	1100	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	95
PID 1100 wrote to memory of 3116	1100	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	95
PID 1468 wrote to memory of 60	1468	knlgahrb.exe	101
PID 1468 wrote to memory of 60	1468	knlgahrb.exe	101
PID 1468 wrote to memory of 60	1468	knlgahrb.exe	101
PID 1468 wrote to memory of 60	1468	knlgahrb.exe	101
PID 1468 wrote to memory of 60	1468	knlgahrb.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1100
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\efqunceb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3636
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\knlgahrb.exe" C:\Windows\SysWOW64\efqunceb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1932
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create efqunceb binPath= "C:\Windows\SysWOW64\efqunceb\knlgahrb.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4856
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description efqunceb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1540
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start efqunceb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1676
- 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:3116
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1100 -s 640
  2⤵
  - Program crash
  PID:1696

C:\Windows\SysWOW64\efqunceb\knlgahrb.exe
C:\Windows\SysWOW64\efqunceb\knlgahrb.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1468
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:60
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1468 -s 512
  2⤵
  - Program crash
  PID:3532

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1100 -ip 1100
1⤵
PID:2952

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1468 -ip 1468
1⤵
PID:2260

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\knlgahrb.exe

Filesize
12.9MB

MD5
49b72e615a4f41a0f36abf7c1b58aef3

SHA1
e88cfc82d413046157118adfd6dcddb9d99f7b3b

SHA256
3f80e2d292f49b7d56a33b094c45903e2784362586b842398bec9a19e43a67b0

SHA512
5928faa406d95e732229299de7d5c658ce06aba277d962f199eee11e19a05de54f06427be5ede09db101c0dc6092d3352e1fcf0ec8190571407a944f5afdfa4c

Download Submit
memory/60-14-0x00000000006F0000-0x0000000000705000-memory.dmp

Filesize
84KB

Download
memory/60-17-0x00000000006F0000-0x0000000000705000-memory.dmp

Filesize
84KB

Download
memory/60-16-0x00000000006F0000-0x0000000000705000-memory.dmp

Filesize
84KB

Download
memory/1100-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/1100-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1100-1-0x0000000000460000-0x0000000000560000-memory.dmp

Filesize
1024KB

Download
memory/1100-8-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/1100-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1100-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/1468-11-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/1468-12-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/1468-13-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/1468-18-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads