tofsee | c56c665284628c1928a4951dd94214549570d48f5ae553fb90a67d2a132ac643

General

Target

JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe
Size

11.7MB
MD5

6347b209373638144cf0ad83f9f6d2e3
SHA1

93ec12b673de5d7a7245d226750c105aae3cac6e
SHA256

c56c665284628c1928a4951dd94214549570d48f5ae553fb90a67d2a132ac643
SHA512

16cf949c45ad07c94b66e22e7bcb9e3c3c947fb150fd411bdf6c98d034145c47910c36be52aa895f012c378a33bc134ac50c766adfadd284333d52d37c7951f4
SSDEEP

6144:I72USLqCfuAKEfkqsGUemWik5nkFp7xkvCd6skSwG8QUsc:kMqCfFfbsGZhikA7xkaYSwG81

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
3292	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\jrxbntva\ImagePath = "C:\\Windows\\SysWOW64\\jrxbntva\\ushtnjuk.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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe

Deletes itself 1 IoCs

pid	Process
3752	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2384	ushtnjuk.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2384 set thread context of 3752	2384	ushtnjuk.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
2380	sc.exe
4140	sc.exe
4972	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
2408	2108	WerFault.exe	83
336	2384	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	ushtnjuk.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	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	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.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 2108 wrote to memory of 2864	2108	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	84
PID 2108 wrote to memory of 2864	2108	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	84
PID 2108 wrote to memory of 2864	2108	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	84
PID 2108 wrote to memory of 2256	2108	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	86
PID 2108 wrote to memory of 2256	2108	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	86
PID 2108 wrote to memory of 2256	2108	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	86
PID 2108 wrote to memory of 4140	2108	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	88
PID 2108 wrote to memory of 4140	2108	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	88
PID 2108 wrote to memory of 4140	2108	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	88
PID 2108 wrote to memory of 4972	2108	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	90
PID 2108 wrote to memory of 4972	2108	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	90
PID 2108 wrote to memory of 4972	2108	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	90
PID 2108 wrote to memory of 2380	2108	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	92
PID 2108 wrote to memory of 2380	2108	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	92
PID 2108 wrote to memory of 2380	2108	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	92
PID 2108 wrote to memory of 3292	2108	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	95
PID 2108 wrote to memory of 3292	2108	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	95
PID 2108 wrote to memory of 3292	2108	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	95
PID 2384 wrote to memory of 3752	2384	ushtnjuk.exe	100
PID 2384 wrote to memory of 3752	2384	ushtnjuk.exe	100
PID 2384 wrote to memory of 3752	2384	ushtnjuk.exe	100
PID 2384 wrote to memory of 3752	2384	ushtnjuk.exe	100
PID 2384 wrote to memory of 3752	2384	ushtnjuk.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2108
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jrxbntva\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2864
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ushtnjuk.exe" C:\Windows\SysWOW64\jrxbntva\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2256
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create jrxbntva binPath= "C:\Windows\SysWOW64\jrxbntva\ushtnjuk.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4140
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description jrxbntva "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4972
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start jrxbntva
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2380
- 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:3292
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2108 -s 1164
  2⤵
  - Program crash
  PID:2408

C:\Windows\SysWOW64\jrxbntva\ushtnjuk.exe
C:\Windows\SysWOW64\jrxbntva\ushtnjuk.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2384
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3752
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2384 -s 516
  2⤵
  - Program crash
  PID:336

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2108 -ip 2108
1⤵
PID:3200

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 2384 -ip 2384
1⤵
PID:4032

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\ushtnjuk.exe

Filesize
14.5MB

MD5
9e3c623d98d2945a6425b7b415098b1d

SHA1
cc044fbb927817fbd8647a52533ff0cf0905cb60

SHA256
3d6aa2028c146cc33a38a9b4a76f69b7d8440c5436df5b15827260dba3232c0e

SHA512
793ed55c4eff0cb0548d4296b481e293f08d98387c18f6f86beeec224b9f8f04e401bd6dd5efcfe67f9187e7bf3cbfc0928bbb731c70f67f096f2931baaa48a0

Download Submit
memory/2108-8-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2108-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2108-2-0x0000000000590000-0x00000000005A3000-memory.dmp

Filesize
76KB

Download
memory/2108-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2108-9-0x0000000000590000-0x00000000005A3000-memory.dmp

Filesize
76KB

Download
memory/2108-1-0x0000000000740000-0x0000000000840000-memory.dmp

Filesize
1024KB

Download
memory/2384-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2384-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2384-17-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3752-13-0x0000000000CA0000-0x0000000000CB5000-memory.dmp

Filesize
84KB

Download
memory/3752-15-0x0000000000CA0000-0x0000000000CB5000-memory.dmp

Filesize
84KB

Download
memory/3752-16-0x0000000000CA0000-0x0000000000CB5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads