tofsee | 8f5d6d636c5957cfc3c7b0bbf389cf33d18eca56012cec3d1510af375a9c52f2

General

Target

JaffaCakes118_8f5d6d636c5957cfc3c7b0bbf389cf33d18eca56012cec3d1510af375a9c52f2.exe
Size

242KB
MD5

a0bf195fa7579fdfbc39dd8bcba6a5dd
SHA1

d4cf4ec6326a38c0750f9324f18473383c61f383
SHA256

8f5d6d636c5957cfc3c7b0bbf389cf33d18eca56012cec3d1510af375a9c52f2
SHA512

5335564141fd678defbb34f71cddefbc2a50cce648095de7b211590c64e42ac20339113449b1ebe3f97ee7c26d5ca388feb153c55290278735c0c4b38bac3e48
SSDEEP

6144:5GZQ1thzjRY1VPr6ux7UkPf+52qDLgx9gfaY:0ZYzjRYbP2ZkPG4OLgx9

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
1424	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\nspmmuge\ImagePath = "C:\\Windows\\SysWOW64\\nspmmuge\\sxtljmy.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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	JaffaCakes118_8f5d6d636c5957cfc3c7b0bbf389cf33d18eca56012cec3d1510af375a9c52f2.exe

Deletes itself 1 IoCs

pid	Process
3408	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4720	sxtljmy.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4720 set thread context of 3408	4720	sxtljmy.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
2592	sc.exe
2572	sc.exe
3416	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
948	4068	WerFault.exe	82
4504	4720	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	JaffaCakes118_8f5d6d636c5957cfc3c7b0bbf389cf33d18eca56012cec3d1510af375a9c52f2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sxtljmy.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	sc.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 4068 wrote to memory of 2188	4068	JaffaCakes118_8f5d6d636c5957cfc3c7b0bbf389cf33d18eca56012cec3d1510af375a9c52f2.exe	83
PID 4068 wrote to memory of 2188	4068	JaffaCakes118_8f5d6d636c5957cfc3c7b0bbf389cf33d18eca56012cec3d1510af375a9c52f2.exe	83
PID 4068 wrote to memory of 2188	4068	JaffaCakes118_8f5d6d636c5957cfc3c7b0bbf389cf33d18eca56012cec3d1510af375a9c52f2.exe	83
PID 4068 wrote to memory of 3204	4068	JaffaCakes118_8f5d6d636c5957cfc3c7b0bbf389cf33d18eca56012cec3d1510af375a9c52f2.exe	85
PID 4068 wrote to memory of 3204	4068	JaffaCakes118_8f5d6d636c5957cfc3c7b0bbf389cf33d18eca56012cec3d1510af375a9c52f2.exe	85
PID 4068 wrote to memory of 3204	4068	JaffaCakes118_8f5d6d636c5957cfc3c7b0bbf389cf33d18eca56012cec3d1510af375a9c52f2.exe	85
PID 4068 wrote to memory of 2592	4068	JaffaCakes118_8f5d6d636c5957cfc3c7b0bbf389cf33d18eca56012cec3d1510af375a9c52f2.exe	87
PID 4068 wrote to memory of 2592	4068	JaffaCakes118_8f5d6d636c5957cfc3c7b0bbf389cf33d18eca56012cec3d1510af375a9c52f2.exe	87
PID 4068 wrote to memory of 2592	4068	JaffaCakes118_8f5d6d636c5957cfc3c7b0bbf389cf33d18eca56012cec3d1510af375a9c52f2.exe	87
PID 4068 wrote to memory of 2572	4068	JaffaCakes118_8f5d6d636c5957cfc3c7b0bbf389cf33d18eca56012cec3d1510af375a9c52f2.exe	89
PID 4068 wrote to memory of 2572	4068	JaffaCakes118_8f5d6d636c5957cfc3c7b0bbf389cf33d18eca56012cec3d1510af375a9c52f2.exe	89
PID 4068 wrote to memory of 2572	4068	JaffaCakes118_8f5d6d636c5957cfc3c7b0bbf389cf33d18eca56012cec3d1510af375a9c52f2.exe	89
PID 4068 wrote to memory of 3416	4068	JaffaCakes118_8f5d6d636c5957cfc3c7b0bbf389cf33d18eca56012cec3d1510af375a9c52f2.exe	92
PID 4068 wrote to memory of 3416	4068	JaffaCakes118_8f5d6d636c5957cfc3c7b0bbf389cf33d18eca56012cec3d1510af375a9c52f2.exe	92
PID 4068 wrote to memory of 3416	4068	JaffaCakes118_8f5d6d636c5957cfc3c7b0bbf389cf33d18eca56012cec3d1510af375a9c52f2.exe	92
PID 4068 wrote to memory of 1424	4068	JaffaCakes118_8f5d6d636c5957cfc3c7b0bbf389cf33d18eca56012cec3d1510af375a9c52f2.exe	95
PID 4068 wrote to memory of 1424	4068	JaffaCakes118_8f5d6d636c5957cfc3c7b0bbf389cf33d18eca56012cec3d1510af375a9c52f2.exe	95
PID 4068 wrote to memory of 1424	4068	JaffaCakes118_8f5d6d636c5957cfc3c7b0bbf389cf33d18eca56012cec3d1510af375a9c52f2.exe	95
PID 4720 wrote to memory of 3408	4720	sxtljmy.exe	101
PID 4720 wrote to memory of 3408	4720	sxtljmy.exe	101
PID 4720 wrote to memory of 3408	4720	sxtljmy.exe	101
PID 4720 wrote to memory of 3408	4720	sxtljmy.exe	101
PID 4720 wrote to memory of 3408	4720	sxtljmy.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8f5d6d636c5957cfc3c7b0bbf389cf33d18eca56012cec3d1510af375a9c52f2.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8f5d6d636c5957cfc3c7b0bbf389cf33d18eca56012cec3d1510af375a9c52f2.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4068
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nspmmuge\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2188
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\sxtljmy.exe" C:\Windows\SysWOW64\nspmmuge\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3204
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nspmmuge binPath= "C:\Windows\SysWOW64\nspmmuge\sxtljmy.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8f5d6d636c5957cfc3c7b0bbf389cf33d18eca56012cec3d1510af375a9c52f2.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2592
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nspmmuge "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2572
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nspmmuge
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3416
- 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:1424
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4068 -s 1028
  2⤵
  - Program crash
  PID:948

C:\Windows\SysWOW64\nspmmuge\sxtljmy.exe
C:\Windows\SysWOW64\nspmmuge\sxtljmy.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8f5d6d636c5957cfc3c7b0bbf389cf33d18eca56012cec3d1510af375a9c52f2.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4720
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3408
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4720 -s 508
  2⤵
  - Program crash
  PID:4504

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4068 -ip 4068
1⤵
PID:5100

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 4720 -ip 4720
1⤵
PID:1988

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\sxtljmy.exe

Filesize
10.7MB

MD5
57c324bcc8bd22da5a5d5ff40d95d4a6

SHA1
db13952ea9b5aa9c22accf8cef80fd2f83b4273c

SHA256
fe9e703333b6deee3743e8b26b9167309c024ab514e0d20ed4d7bfbee6750203

SHA512
83c352a812562030cf946489942c7d54679dd4f3e55833f81a4d70ab07073fd93a9ac24c9f8935a58c102595ba6572d215fbf5b6ddbdf296eab7486b545ff14c

Download Submit
memory/3408-13-0x0000000000B40000-0x0000000000B55000-memory.dmp

Filesize
84KB

Download
memory/3408-16-0x0000000000B40000-0x0000000000B55000-memory.dmp

Filesize
84KB

Download
memory/3408-15-0x0000000000B40000-0x0000000000B55000-memory.dmp

Filesize
84KB

Download
memory/4068-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4068-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4068-1-0x0000000000640000-0x0000000000740000-memory.dmp

Filesize
1024KB

Download
memory/4068-8-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/4068-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4068-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4720-11-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/4720-12-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/4720-18-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads