tofsee | 2f2d7e013231cda4388c4615e51bad3f9afe6c2f023543ad66501bee6ff7dc38

General

Target

JaffaCakes118_a0990e14693094968d8c4d477e4af16c.exe
Size

13.5MB
MD5

a0990e14693094968d8c4d477e4af16c
SHA1

be2d58786c4208d854a72c8a136b7a9e9a3d3d84
SHA256

2f2d7e013231cda4388c4615e51bad3f9afe6c2f023543ad66501bee6ff7dc38
SHA512

9fcf21dcafdeddeab72b43b56519e5940f27e8a6fe33d01dc71a9e0326bf6a5fbae5286778bb2e7ab0d1a03f9766a5852f43cabf967b8704527d6aabd3db6d7f
SSDEEP

49152:gzPOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO:g

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
3984	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\fsdjdbke\ImagePath = "C:\\Windows\\SysWOW64\\fsdjdbke\\otsqgmvk.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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	JaffaCakes118_a0990e14693094968d8c4d477e4af16c.exe

Deletes itself 1 IoCs

pid	Process
3484	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4776	otsqgmvk.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4776 set thread context of 3484	4776	otsqgmvk.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
388	sc.exe
2320	sc.exe
1436	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
400	4064	WerFault.exe	84
1496	4776	WerFault.exe	96

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	JaffaCakes118_a0990e14693094968d8c4d477e4af16c.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	otsqgmvk.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4064 wrote to memory of 1936	4064	JaffaCakes118_a0990e14693094968d8c4d477e4af16c.exe	85
PID 4064 wrote to memory of 1936	4064	JaffaCakes118_a0990e14693094968d8c4d477e4af16c.exe	85
PID 4064 wrote to memory of 1936	4064	JaffaCakes118_a0990e14693094968d8c4d477e4af16c.exe	85
PID 4064 wrote to memory of 4172	4064	JaffaCakes118_a0990e14693094968d8c4d477e4af16c.exe	87
PID 4064 wrote to memory of 4172	4064	JaffaCakes118_a0990e14693094968d8c4d477e4af16c.exe	87
PID 4064 wrote to memory of 4172	4064	JaffaCakes118_a0990e14693094968d8c4d477e4af16c.exe	87
PID 4064 wrote to memory of 1436	4064	JaffaCakes118_a0990e14693094968d8c4d477e4af16c.exe	90
PID 4064 wrote to memory of 1436	4064	JaffaCakes118_a0990e14693094968d8c4d477e4af16c.exe	90
PID 4064 wrote to memory of 1436	4064	JaffaCakes118_a0990e14693094968d8c4d477e4af16c.exe	90
PID 4064 wrote to memory of 388	4064	JaffaCakes118_a0990e14693094968d8c4d477e4af16c.exe	92
PID 4064 wrote to memory of 388	4064	JaffaCakes118_a0990e14693094968d8c4d477e4af16c.exe	92
PID 4064 wrote to memory of 388	4064	JaffaCakes118_a0990e14693094968d8c4d477e4af16c.exe	92
PID 4064 wrote to memory of 2320	4064	JaffaCakes118_a0990e14693094968d8c4d477e4af16c.exe	94
PID 4064 wrote to memory of 2320	4064	JaffaCakes118_a0990e14693094968d8c4d477e4af16c.exe	94
PID 4064 wrote to memory of 2320	4064	JaffaCakes118_a0990e14693094968d8c4d477e4af16c.exe	94
PID 4064 wrote to memory of 3984	4064	JaffaCakes118_a0990e14693094968d8c4d477e4af16c.exe	97
PID 4064 wrote to memory of 3984	4064	JaffaCakes118_a0990e14693094968d8c4d477e4af16c.exe	97
PID 4064 wrote to memory of 3984	4064	JaffaCakes118_a0990e14693094968d8c4d477e4af16c.exe	97
PID 4776 wrote to memory of 3484	4776	otsqgmvk.exe	103
PID 4776 wrote to memory of 3484	4776	otsqgmvk.exe	103
PID 4776 wrote to memory of 3484	4776	otsqgmvk.exe	103
PID 4776 wrote to memory of 3484	4776	otsqgmvk.exe	103
PID 4776 wrote to memory of 3484	4776	otsqgmvk.exe	103

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a0990e14693094968d8c4d477e4af16c.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a0990e14693094968d8c4d477e4af16c.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4064
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fsdjdbke\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1936
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\otsqgmvk.exe" C:\Windows\SysWOW64\fsdjdbke\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4172
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fsdjdbke binPath= "C:\Windows\SysWOW64\fsdjdbke\otsqgmvk.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a0990e14693094968d8c4d477e4af16c.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1436
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fsdjdbke "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:388
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fsdjdbke
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2320
- 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:3984
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4064 -s 1040
  2⤵
  - Program crash
  PID:400

C:\Windows\SysWOW64\fsdjdbke\otsqgmvk.exe
C:\Windows\SysWOW64\fsdjdbke\otsqgmvk.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a0990e14693094968d8c4d477e4af16c.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4776
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3484
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4776 -s 524
  2⤵
  - Program crash
  PID:1496

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4064 -ip 4064
1⤵
PID:3172

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 4776 -ip 4776
1⤵
PID:4392

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\otsqgmvk.exe

Filesize
11.0MB

MD5
5f569197f197557b1e8156f7f573e780

SHA1
342733a501f13bd4464649adebc38c79bb4d2155

SHA256
ea38df870b67a905465db8d5596919cbde2944bdb1c48155d87fac86f7744a6b

SHA512
63b6bd9f1ac2ca397d74bdac5fd722e546b4646acbc37a878097f6a8ec7a2223cf4e9c1ce371320e3643357644d3cf4cec611bd34969c86de704dce26704fc2b

Download Submit
memory/3484-11-0x0000000000750000-0x0000000000765000-memory.dmp

Filesize
84KB

Download
memory/3484-13-0x0000000000750000-0x0000000000765000-memory.dmp

Filesize
84KB

Download
memory/3484-15-0x0000000000750000-0x0000000000765000-memory.dmp

Filesize
84KB

Download
memory/4064-1-0x00000000017A0000-0x00000000018A0000-memory.dmp

Filesize
1024KB

Download
memory/4064-2-0x0000000003400000-0x0000000003413000-memory.dmp

Filesize
76KB

Download
memory/4064-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4064-9-0x0000000003400000-0x0000000003413000-memory.dmp

Filesize
76KB

Download
memory/4064-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4064-8-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/4776-14-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/4776-17-0x0000000000400000-0x00000000016BC000-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