tofsee | 2bbd19cdc916f6515245ccd581791d15090f06204179e934f05a92c1bff87625

General

Target

JaffaCakes118_b460616088a594b836f543781bdc3a8b.exe
Size

13.3MB
MD5

b460616088a594b836f543781bdc3a8b
SHA1

d92a604e9fed031bd726c2fa161ffce3e25bb385
SHA256

2bbd19cdc916f6515245ccd581791d15090f06204179e934f05a92c1bff87625
SHA512

e09aede42b84304d8ba1cd2e33d6adeccdd85cc24d215cc092d000f5abddb434573a63d42abdf928451aaeb9f386d60e993097dd8dab261b96ccdd660d64cc3a
SSDEEP

49152:f1m333333333333333333333333333333333333333333333333333333333333n:

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.ru

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
4840	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\grymccny\ImagePath = "C:\\Windows\\SysWOW64\\grymccny\\bdxmiear.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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	JaffaCakes118_b460616088a594b836f543781bdc3a8b.exe

Deletes itself 1 IoCs

pid	Process
1936	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1660	bdxmiear.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1660 set thread context of 1936	1660	bdxmiear.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
4168	sc.exe
1056	sc.exe
1312	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
4124	3496	WerFault.exe	82
2016	1660	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_b460616088a594b836f543781bdc3a8b.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bdxmiear.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3496 wrote to memory of 964	3496	JaffaCakes118_b460616088a594b836f543781bdc3a8b.exe	83
PID 3496 wrote to memory of 964	3496	JaffaCakes118_b460616088a594b836f543781bdc3a8b.exe	83
PID 3496 wrote to memory of 964	3496	JaffaCakes118_b460616088a594b836f543781bdc3a8b.exe	83
PID 3496 wrote to memory of 3472	3496	JaffaCakes118_b460616088a594b836f543781bdc3a8b.exe	85
PID 3496 wrote to memory of 3472	3496	JaffaCakes118_b460616088a594b836f543781bdc3a8b.exe	85
PID 3496 wrote to memory of 3472	3496	JaffaCakes118_b460616088a594b836f543781bdc3a8b.exe	85
PID 3496 wrote to memory of 4168	3496	JaffaCakes118_b460616088a594b836f543781bdc3a8b.exe	88
PID 3496 wrote to memory of 4168	3496	JaffaCakes118_b460616088a594b836f543781bdc3a8b.exe	88
PID 3496 wrote to memory of 4168	3496	JaffaCakes118_b460616088a594b836f543781bdc3a8b.exe	88
PID 3496 wrote to memory of 1056	3496	JaffaCakes118_b460616088a594b836f543781bdc3a8b.exe	90
PID 3496 wrote to memory of 1056	3496	JaffaCakes118_b460616088a594b836f543781bdc3a8b.exe	90
PID 3496 wrote to memory of 1056	3496	JaffaCakes118_b460616088a594b836f543781bdc3a8b.exe	90
PID 3496 wrote to memory of 1312	3496	JaffaCakes118_b460616088a594b836f543781bdc3a8b.exe	92
PID 3496 wrote to memory of 1312	3496	JaffaCakes118_b460616088a594b836f543781bdc3a8b.exe	92
PID 3496 wrote to memory of 1312	3496	JaffaCakes118_b460616088a594b836f543781bdc3a8b.exe	92
PID 3496 wrote to memory of 4840	3496	JaffaCakes118_b460616088a594b836f543781bdc3a8b.exe	95
PID 3496 wrote to memory of 4840	3496	JaffaCakes118_b460616088a594b836f543781bdc3a8b.exe	95
PID 3496 wrote to memory of 4840	3496	JaffaCakes118_b460616088a594b836f543781bdc3a8b.exe	95
PID 1660 wrote to memory of 1936	1660	bdxmiear.exe	103
PID 1660 wrote to memory of 1936	1660	bdxmiear.exe	103
PID 1660 wrote to memory of 1936	1660	bdxmiear.exe	103
PID 1660 wrote to memory of 1936	1660	bdxmiear.exe	103
PID 1660 wrote to memory of 1936	1660	bdxmiear.exe	103

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b460616088a594b836f543781bdc3a8b.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b460616088a594b836f543781bdc3a8b.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3496
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\grymccny\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:964
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bdxmiear.exe" C:\Windows\SysWOW64\grymccny\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3472
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create grymccny binPath= "C:\Windows\SysWOW64\grymccny\bdxmiear.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b460616088a594b836f543781bdc3a8b.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4168
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description grymccny "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1056
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start grymccny
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1312
- 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:4840
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3496 -s 1224
  2⤵
  - Program crash
  PID:4124

C:\Windows\SysWOW64\grymccny\bdxmiear.exe
C:\Windows\SysWOW64\grymccny\bdxmiear.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b460616088a594b836f543781bdc3a8b.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1660
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1936
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1660 -s 524
  2⤵
  - Program crash
  PID:2016

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 3496 -ip 3496
1⤵
PID:2876

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 1660 -ip 1660
1⤵
PID:624

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\bdxmiear.exe

Filesize
12.8MB

MD5
22eb74262bf2404a65ee1c584348ce65

SHA1
accf1d75b0f3437ce503dd3ded0a18ccf7e66cc4

SHA256
a33859a20a90bd5e9346ee8a2ac8902d29ebd6b4b08780b59347dc4cb49040ea

SHA512
f444205281c1ee9a1dd64606cab9a93694fb2d86d8e85fbce31a1e3e57a09222ee41264e8851919c12f8071ea21d446338f23800f81576cf514df38e3388ee15

Download Submit
memory/1660-14-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/1660-17-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/1936-11-0x00000000006E0000-0x00000000006F5000-memory.dmp

Filesize
84KB

Download
memory/1936-13-0x00000000006E0000-0x00000000006F5000-memory.dmp

Filesize
84KB

Download
memory/1936-15-0x00000000006E0000-0x00000000006F5000-memory.dmp

Filesize
84KB

Download
memory/3496-1-0x0000000001900000-0x0000000001A00000-memory.dmp

Filesize
1024KB

Download
memory/3496-2-0x0000000001860000-0x0000000001873000-memory.dmp

Filesize
76KB

Download
memory/3496-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3496-9-0x0000000001860000-0x0000000001873000-memory.dmp

Filesize
76KB

Download
memory/3496-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3496-8-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads