tofsee | b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59

General

Target

JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe
Size

286KB
MD5

fb73d870e424a23443e73e0593b0ec46
SHA1

17f76ce7d91f19c6030a1d457c72c7aba219d89b
SHA256

b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59
SHA512

1e28f84c5b9d3a577416194f0d7c7cdcd8915a686e882df1e5261cd11d041865a05b44fe6d3a3c4ea4fa285f548ab88bdf82039cd1c41d799b871414d768f755
SSDEEP

3072:5At7kEc9xTQyjv0TblKBF05HOu0ay/M3V9h2HxetxaA1j/dVcuBUA4VFrm5yUH:5s7wvQyjvelKbyH8UEHxEx53cuVQG

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
2956	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\jqfutyug\ImagePath = "C:\\Windows\\SysWOW64\\jqfutyug\\ecmkkajz.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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe

Deletes itself 1 IoCs

pid	Process
2344	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2580	ecmkkajz.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2580 set thread context of 2344	2580	ecmkkajz.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
2020	sc.exe
4432	sc.exe
4384	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2620	2044	WerFault.exe	82
2752	2580	WerFault.exe	93

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	netsh.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ecmkkajz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2044 wrote to memory of 3568	2044	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	83
PID 2044 wrote to memory of 3568	2044	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	83
PID 2044 wrote to memory of 3568	2044	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	83
PID 2044 wrote to memory of 4600	2044	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	85
PID 2044 wrote to memory of 4600	2044	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	85
PID 2044 wrote to memory of 4600	2044	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	85
PID 2044 wrote to memory of 4384	2044	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	87
PID 2044 wrote to memory of 4384	2044	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	87
PID 2044 wrote to memory of 4384	2044	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	87
PID 2044 wrote to memory of 2020	2044	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	89
PID 2044 wrote to memory of 2020	2044	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	89
PID 2044 wrote to memory of 2020	2044	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	89
PID 2044 wrote to memory of 4432	2044	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	91
PID 2044 wrote to memory of 4432	2044	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	91
PID 2044 wrote to memory of 4432	2044	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	91
PID 2044 wrote to memory of 2956	2044	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	94
PID 2044 wrote to memory of 2956	2044	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	94
PID 2044 wrote to memory of 2956	2044	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	94
PID 2580 wrote to memory of 2344	2580	ecmkkajz.exe	100
PID 2580 wrote to memory of 2344	2580	ecmkkajz.exe	100
PID 2580 wrote to memory of 2344	2580	ecmkkajz.exe	100
PID 2580 wrote to memory of 2344	2580	ecmkkajz.exe	100
PID 2580 wrote to memory of 2344	2580	ecmkkajz.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2044
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jqfutyug\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3568
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ecmkkajz.exe" C:\Windows\SysWOW64\jqfutyug\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4600
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create jqfutyug binPath= "C:\Windows\SysWOW64\jqfutyug\ecmkkajz.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4384
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description jqfutyug "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2020
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start jqfutyug
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4432
- 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:2956
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2044 -s 1040
  2⤵
  - Program crash
  PID:2620

C:\Windows\SysWOW64\jqfutyug\ecmkkajz.exe
C:\Windows\SysWOW64\jqfutyug\ecmkkajz.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2580
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2344
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2580 -s 508
  2⤵
  - Program crash
  PID:2752

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2044 -ip 2044
1⤵
PID:3440

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 2580 -ip 2580
1⤵
PID:3384

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\ecmkkajz.exe

Filesize
13.9MB

MD5
741284791ec4a79126372f6a50161c36

SHA1
dbf14c2876acdfffa5d06d825e4b14ab00d65502

SHA256
05e475cc963a6a7a2b0a8857a8b45ddad9c604f2adfb07619a1e44efc1050cd4

SHA512
e15adbddf5ca12db69f59e9482c19d55545a2e4a8e234097858a17d5abc743497e2f7756d0b31b470c0dcaf4fa0fbd9258d50c9751fa7a1858a5e1559d0a1ecc

Download Submit
memory/2044-1-0x0000000002EB0000-0x0000000002FB0000-memory.dmp

Filesize
1024KB

Download
memory/2044-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2044-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2044-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2044-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2044-8-0x0000000000400000-0x0000000002B90000-memory.dmp

Filesize
39.6MB

Download
memory/2344-11-0x0000000000950000-0x0000000000965000-memory.dmp

Filesize
84KB

Download
memory/2344-13-0x0000000000950000-0x0000000000965000-memory.dmp

Filesize
84KB

Download
memory/2344-14-0x0000000000950000-0x0000000000965000-memory.dmp

Filesize
84KB

Download
memory/2580-15-0x0000000000400000-0x0000000002B90000-memory.dmp

Filesize
39.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads