tofsee | 6b65341118c8804cdc8160231334720f941f4aa427ae61b8440042827b626f9b

General

Target

JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe
Size

11.7MB
MD5

a8e160b0eab8a79a750eeb89aa963006
SHA1

485a389f77f4c4dda1dbf5e6f92cf878409ec9ed
SHA256

6b65341118c8804cdc8160231334720f941f4aa427ae61b8440042827b626f9b
SHA512

bde2c40e584f2f2cc662b34a5984287ee8e693b5cd4ecadb280e4b2dbf2bba1854eaa8d3504540f7cf6784fd43276f9fe0dd0e5a9b6182abbc770ceaa68297d5
SSDEEP

196608:ThKaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaan:T

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
2500	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\dkfmrcav\ImagePath = "C:\\Windows\\SysWOW64\\dkfmrcav\\bzjhhxgw.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_a8e160b0eab8a79a750eeb89aa963006.exe

Deletes itself 1 IoCs

pid	Process
3156	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
456	bzjhhxgw.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 456 set thread context of 3156	456	bzjhhxgw.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
4964	sc.exe
1848	sc.exe
2988	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
4624	464	WerFault.exe	81
4500	456	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bzjhhxgw.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 464 wrote to memory of 4152	464	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	82
PID 464 wrote to memory of 4152	464	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	82
PID 464 wrote to memory of 4152	464	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	82
PID 464 wrote to memory of 1616	464	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	84
PID 464 wrote to memory of 1616	464	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	84
PID 464 wrote to memory of 1616	464	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	84
PID 464 wrote to memory of 2988	464	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	86
PID 464 wrote to memory of 2988	464	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	86
PID 464 wrote to memory of 2988	464	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	86
PID 464 wrote to memory of 4964	464	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	88
PID 464 wrote to memory of 4964	464	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	88
PID 464 wrote to memory of 4964	464	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	88
PID 464 wrote to memory of 1848	464	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	90
PID 464 wrote to memory of 1848	464	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	90
PID 464 wrote to memory of 1848	464	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	90
PID 464 wrote to memory of 2500	464	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	93
PID 464 wrote to memory of 2500	464	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	93
PID 464 wrote to memory of 2500	464	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	93
PID 456 wrote to memory of 3156	456	bzjhhxgw.exe	98
PID 456 wrote to memory of 3156	456	bzjhhxgw.exe	98
PID 456 wrote to memory of 3156	456	bzjhhxgw.exe	98
PID 456 wrote to memory of 3156	456	bzjhhxgw.exe	98
PID 456 wrote to memory of 3156	456	bzjhhxgw.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:464
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dkfmrcav\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4152
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bzjhhxgw.exe" C:\Windows\SysWOW64\dkfmrcav\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1616
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create dkfmrcav binPath= "C:\Windows\SysWOW64\dkfmrcav\bzjhhxgw.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2988
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description dkfmrcav "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4964
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start dkfmrcav
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1848
- 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:2500
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 464 -s 1344
  2⤵
  - Program crash
  PID:4624

C:\Windows\SysWOW64\dkfmrcav\bzjhhxgw.exe
C:\Windows\SysWOW64\dkfmrcav\bzjhhxgw.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:456
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3156
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 456 -s 520
  2⤵
  - Program crash
  PID:4500

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 464 -ip 464
1⤵
PID:3832

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 456 -ip 456
1⤵
PID:1336

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\bzjhhxgw.exe

Filesize
13.0MB

MD5
2f5f5daba97a2741e0accd032949da99

SHA1
2b7f1096b049cd813a6eadff359240798263c9a8

SHA256
0e4fdb82b23a62ae0cd07ff5f17d4afbb16522ea55271cfda77f3dcf85d4ca75

SHA512
5b76d979fc175c6ba7dc94bcad1d54fe8e3b529dfd572882fad16583c7d15803a289a729573b034078faf45ac0b2dd9ee5f1020d5276728ab9d02da70270e64a

Download Submit
memory/456-13-0x0000000000400000-0x000000000086F000-memory.dmp

Filesize
4.4MB

Download
memory/456-15-0x0000000000400000-0x000000000086F000-memory.dmp

Filesize
4.4MB

Download
memory/464-1-0x0000000000AB0000-0x0000000000BB0000-memory.dmp

Filesize
1024KB

Download
memory/464-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/464-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/464-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/464-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/464-8-0x0000000000400000-0x000000000086F000-memory.dmp

Filesize
4.4MB

Download
memory/3156-11-0x0000000000C40000-0x0000000000C55000-memory.dmp

Filesize
84KB

Download
memory/3156-14-0x0000000000C40000-0x0000000000C55000-memory.dmp

Filesize
84KB

Download
memory/3156-17-0x0000000000C40000-0x0000000000C55000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads