tofsee | 372010d5c8c0252c2665102e9ae4afdde5b549ed877bc8c8c5989fdce0b57a0e

General

Target

JaffaCakes118_e41b36781115c6d30f9a721299d9279d.exe
Size

12.6MB
MD5

e41b36781115c6d30f9a721299d9279d
SHA1

39644feb784bd5f90667c6d181acfbe6e5d2ef1d
SHA256

372010d5c8c0252c2665102e9ae4afdde5b549ed877bc8c8c5989fdce0b57a0e
SHA512

a5bc6a465114d043ef90173ad5d911ea910648ad7a317fa1a105dbf48d00d73228f8c33dbb09800c7294769e3db6030c992d28c19246c32de28efcacc87096b8
SSDEEP

393216:fH2222222222222222222222222222222222222222222222222222222222222u:v222222222222222222222222222222P

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.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
2972	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\bpctpsix\ImagePath = "C:\\Windows\\SysWOW64\\bpctpsix\\cyqqncbp.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_e41b36781115c6d30f9a721299d9279d.exe

Deletes itself 1 IoCs

pid	Process
1580	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1996	cyqqncbp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1996 set thread context of 1580	1996	cyqqncbp.exe	93

Launches sc.exe 3 IoCs

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

pid	Process
4132	sc.exe
1632	sc.exe
3936	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
3092	1996	WerFault.exe	92
948	4576	WerFault.exe	81

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cyqqncbp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_e41b36781115c6d30f9a721299d9279d.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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4576 wrote to memory of 1884	4576	JaffaCakes118_e41b36781115c6d30f9a721299d9279d.exe	82
PID 4576 wrote to memory of 1884	4576	JaffaCakes118_e41b36781115c6d30f9a721299d9279d.exe	82
PID 4576 wrote to memory of 1884	4576	JaffaCakes118_e41b36781115c6d30f9a721299d9279d.exe	82
PID 4576 wrote to memory of 4948	4576	JaffaCakes118_e41b36781115c6d30f9a721299d9279d.exe	84
PID 4576 wrote to memory of 4948	4576	JaffaCakes118_e41b36781115c6d30f9a721299d9279d.exe	84
PID 4576 wrote to memory of 4948	4576	JaffaCakes118_e41b36781115c6d30f9a721299d9279d.exe	84
PID 4576 wrote to memory of 4132	4576	JaffaCakes118_e41b36781115c6d30f9a721299d9279d.exe	86
PID 4576 wrote to memory of 4132	4576	JaffaCakes118_e41b36781115c6d30f9a721299d9279d.exe	86
PID 4576 wrote to memory of 4132	4576	JaffaCakes118_e41b36781115c6d30f9a721299d9279d.exe	86
PID 4576 wrote to memory of 1632	4576	JaffaCakes118_e41b36781115c6d30f9a721299d9279d.exe	88
PID 4576 wrote to memory of 1632	4576	JaffaCakes118_e41b36781115c6d30f9a721299d9279d.exe	88
PID 4576 wrote to memory of 1632	4576	JaffaCakes118_e41b36781115c6d30f9a721299d9279d.exe	88
PID 4576 wrote to memory of 3936	4576	JaffaCakes118_e41b36781115c6d30f9a721299d9279d.exe	90
PID 4576 wrote to memory of 3936	4576	JaffaCakes118_e41b36781115c6d30f9a721299d9279d.exe	90
PID 4576 wrote to memory of 3936	4576	JaffaCakes118_e41b36781115c6d30f9a721299d9279d.exe	90
PID 1996 wrote to memory of 1580	1996	cyqqncbp.exe	93
PID 1996 wrote to memory of 1580	1996	cyqqncbp.exe	93
PID 1996 wrote to memory of 1580	1996	cyqqncbp.exe	93
PID 1996 wrote to memory of 1580	1996	cyqqncbp.exe	93
PID 1996 wrote to memory of 1580	1996	cyqqncbp.exe	93
PID 4576 wrote to memory of 2972	4576	JaffaCakes118_e41b36781115c6d30f9a721299d9279d.exe	97
PID 4576 wrote to memory of 2972	4576	JaffaCakes118_e41b36781115c6d30f9a721299d9279d.exe	97
PID 4576 wrote to memory of 2972	4576	JaffaCakes118_e41b36781115c6d30f9a721299d9279d.exe	97

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e41b36781115c6d30f9a721299d9279d.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e41b36781115c6d30f9a721299d9279d.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4576
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bpctpsix\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1884
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cyqqncbp.exe" C:\Windows\SysWOW64\bpctpsix\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4948
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bpctpsix binPath= "C:\Windows\SysWOW64\bpctpsix\cyqqncbp.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e41b36781115c6d30f9a721299d9279d.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4132
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bpctpsix "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1632
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bpctpsix
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3936
- 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:2972
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4576 -s 672
  2⤵
  - Program crash
  PID:948

C:\Windows\SysWOW64\bpctpsix\cyqqncbp.exe
C:\Windows\SysWOW64\bpctpsix\cyqqncbp.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e41b36781115c6d30f9a721299d9279d.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1996
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1580
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1996 -s 524
  2⤵
  - Program crash
  PID:3092

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 1996 -ip 1996
1⤵
PID:4352

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 4576 -ip 4576
1⤵
PID:4872

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\cyqqncbp.exe

Filesize
12.9MB

MD5
002e8b5440938c24c646013a6c4380dc

SHA1
48233d8c4de62f3d1e54dd56a54bcb88c59708f1

SHA256
8663f1336d15a182dc1f16b4a55e360964b735a22ddaf87baa4d09c7e7f5514b

SHA512
a01599095603567dbb12db80c06d928f629103712d71c9cb713f84dc2c5017cc9febed93aa2d0a8440705f1ef55102ae25b71921d6b34a55d22c5dd0241a3bdc

Download Submit
memory/1580-12-0x0000000000AD0000-0x0000000000AE5000-memory.dmp

Filesize
84KB

Download
memory/1580-9-0x0000000000AD0000-0x0000000000AE5000-memory.dmp

Filesize
84KB

Download
memory/1580-17-0x0000000000AD0000-0x0000000000AE5000-memory.dmp

Filesize
84KB

Download
memory/1580-18-0x0000000000AD0000-0x0000000000AE5000-memory.dmp

Filesize
84KB

Download
memory/1580-19-0x0000000000AD0000-0x0000000000AE5000-memory.dmp

Filesize
84KB

Download
memory/1996-8-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/1996-13-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/4576-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4576-2-0x00000000005E0000-0x00000000005F3000-memory.dmp

Filesize
76KB

Download
memory/4576-1-0x0000000000650000-0x0000000000750000-memory.dmp

Filesize
1024KB

Download
memory/4576-14-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/4576-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4576-15-0x00000000005E0000-0x00000000005F3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads