tofsee | 72f0323499a3831dcbc7d9d558143b12a44beadcd7d61ecc37512e31fd357d2c

General

Target

JaffaCakes118_72f0323499a3831dcbc7d9d558143b12a44beadcd7d61ecc37512e31fd357d2c.exe
Size

283KB
MD5

64561281dec56eb90a6d09c136fe247c
SHA1

90abc8a42cc24d16c9b3d5f7b768b5be8df9cb3e
SHA256

72f0323499a3831dcbc7d9d558143b12a44beadcd7d61ecc37512e31fd357d2c
SHA512

4a9dec99567ea12dbf089844343911920a7a1a55337f9b2e4c5ce8d134523dfc3d232f1030a0121724414e2aafb49f4df13377c9a6cf29fbfca8f6eb0694ed4c
SSDEEP

3072:k0Pk78X7od3gwQTyrZ6bA5VKtxjm/z0o3/ycngVYseLzSOgxw5aGCTZGa9yXgGgy:D878A3QBbA3Exw5o6yOH9k79kgGpeU

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
3104	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\nrrfsrmg\ImagePath = "C:\\Windows\\SysWOW64\\nrrfsrmg\\zeasqtf.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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	JaffaCakes118_72f0323499a3831dcbc7d9d558143b12a44beadcd7d61ecc37512e31fd357d2c.exe

Deletes itself 1 IoCs

pid	Process
4772	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2748	zeasqtf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2748 set thread context of 4772	2748	zeasqtf.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
5004	sc.exe
2144	sc.exe
4052	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
3716	392	WerFault.exe	81
1872	2748	WerFault.exe	92

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_72f0323499a3831dcbc7d9d558143b12a44beadcd7d61ecc37512e31fd357d2c.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	zeasqtf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 392 wrote to memory of 4192	392	JaffaCakes118_72f0323499a3831dcbc7d9d558143b12a44beadcd7d61ecc37512e31fd357d2c.exe	82
PID 392 wrote to memory of 4192	392	JaffaCakes118_72f0323499a3831dcbc7d9d558143b12a44beadcd7d61ecc37512e31fd357d2c.exe	82
PID 392 wrote to memory of 4192	392	JaffaCakes118_72f0323499a3831dcbc7d9d558143b12a44beadcd7d61ecc37512e31fd357d2c.exe	82
PID 392 wrote to memory of 4384	392	JaffaCakes118_72f0323499a3831dcbc7d9d558143b12a44beadcd7d61ecc37512e31fd357d2c.exe	84
PID 392 wrote to memory of 4384	392	JaffaCakes118_72f0323499a3831dcbc7d9d558143b12a44beadcd7d61ecc37512e31fd357d2c.exe	84
PID 392 wrote to memory of 4384	392	JaffaCakes118_72f0323499a3831dcbc7d9d558143b12a44beadcd7d61ecc37512e31fd357d2c.exe	84
PID 392 wrote to memory of 4052	392	JaffaCakes118_72f0323499a3831dcbc7d9d558143b12a44beadcd7d61ecc37512e31fd357d2c.exe	86
PID 392 wrote to memory of 4052	392	JaffaCakes118_72f0323499a3831dcbc7d9d558143b12a44beadcd7d61ecc37512e31fd357d2c.exe	86
PID 392 wrote to memory of 4052	392	JaffaCakes118_72f0323499a3831dcbc7d9d558143b12a44beadcd7d61ecc37512e31fd357d2c.exe	86
PID 392 wrote to memory of 5004	392	JaffaCakes118_72f0323499a3831dcbc7d9d558143b12a44beadcd7d61ecc37512e31fd357d2c.exe	88
PID 392 wrote to memory of 5004	392	JaffaCakes118_72f0323499a3831dcbc7d9d558143b12a44beadcd7d61ecc37512e31fd357d2c.exe	88
PID 392 wrote to memory of 5004	392	JaffaCakes118_72f0323499a3831dcbc7d9d558143b12a44beadcd7d61ecc37512e31fd357d2c.exe	88
PID 392 wrote to memory of 2144	392	JaffaCakes118_72f0323499a3831dcbc7d9d558143b12a44beadcd7d61ecc37512e31fd357d2c.exe	90
PID 392 wrote to memory of 2144	392	JaffaCakes118_72f0323499a3831dcbc7d9d558143b12a44beadcd7d61ecc37512e31fd357d2c.exe	90
PID 392 wrote to memory of 2144	392	JaffaCakes118_72f0323499a3831dcbc7d9d558143b12a44beadcd7d61ecc37512e31fd357d2c.exe	90
PID 392 wrote to memory of 3104	392	JaffaCakes118_72f0323499a3831dcbc7d9d558143b12a44beadcd7d61ecc37512e31fd357d2c.exe	93
PID 392 wrote to memory of 3104	392	JaffaCakes118_72f0323499a3831dcbc7d9d558143b12a44beadcd7d61ecc37512e31fd357d2c.exe	93
PID 392 wrote to memory of 3104	392	JaffaCakes118_72f0323499a3831dcbc7d9d558143b12a44beadcd7d61ecc37512e31fd357d2c.exe	93
PID 2748 wrote to memory of 4772	2748	zeasqtf.exe	98
PID 2748 wrote to memory of 4772	2748	zeasqtf.exe	98
PID 2748 wrote to memory of 4772	2748	zeasqtf.exe	98
PID 2748 wrote to memory of 4772	2748	zeasqtf.exe	98
PID 2748 wrote to memory of 4772	2748	zeasqtf.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_72f0323499a3831dcbc7d9d558143b12a44beadcd7d61ecc37512e31fd357d2c.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_72f0323499a3831dcbc7d9d558143b12a44beadcd7d61ecc37512e31fd357d2c.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:392
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nrrfsrmg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4192
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zeasqtf.exe" C:\Windows\SysWOW64\nrrfsrmg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4384
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nrrfsrmg binPath= "C:\Windows\SysWOW64\nrrfsrmg\zeasqtf.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_72f0323499a3831dcbc7d9d558143b12a44beadcd7d61ecc37512e31fd357d2c.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4052
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nrrfsrmg "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5004
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nrrfsrmg
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2144
- 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:3104
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 392 -s 1044
  2⤵
  - Program crash
  PID:3716

C:\Windows\SysWOW64\nrrfsrmg\zeasqtf.exe
C:\Windows\SysWOW64\nrrfsrmg\zeasqtf.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_72f0323499a3831dcbc7d9d558143b12a44beadcd7d61ecc37512e31fd357d2c.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2748
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4772
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2748 -s 512
  2⤵
  - Program crash
  PID:1872

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 392 -ip 392
1⤵
PID:4892

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2748 -ip 2748
1⤵
PID:3516

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\zeasqtf.exe

Filesize
13.8MB

MD5
6ae39eaf1b0659733f0df87172b45ac7

SHA1
7ad10ad8b141be9eb023e5e14ee819324aea47bf

SHA256
6c1e4fcb58973409fd8216db809f491d41d4749982f96740bfb4d58cb90faa19

SHA512
98280d30f83ef944118e40c7e0847da113f654a48bafbd3194ec1cd94b3b4ece917931b9b866aa9b3a20d7a7a3fd40a5a75407de427faccdbc8d551ee4671dc1

Download Submit
memory/392-1-0x0000000002EF0000-0x0000000002FF0000-memory.dmp

Filesize
1024KB

Download
memory/392-2-0x0000000002CA0000-0x0000000002CB3000-memory.dmp

Filesize
76KB

Download
memory/392-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/392-9-0x0000000002CA0000-0x0000000002CB3000-memory.dmp

Filesize
76KB

Download
memory/392-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/392-8-0x0000000000400000-0x0000000002B8F000-memory.dmp

Filesize
39.6MB

Download
memory/2748-15-0x0000000000400000-0x0000000002B8F000-memory.dmp

Filesize
39.6MB

Download
memory/4772-11-0x0000000000F10000-0x0000000000F25000-memory.dmp

Filesize
84KB

Download
memory/4772-13-0x0000000000F10000-0x0000000000F25000-memory.dmp

Filesize
84KB

Download
memory/4772-14-0x0000000000F10000-0x0000000000F25000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads