tofsee | 54ae63cbfc8ffd4f1774f3bfa72767838e69ea8fb7462235e8ea2090ecbac6b1

General

Target

e91f87757b258636c980a9f915163bda_JaffaCakes118.exe
Size

11.0MB
MD5

e91f87757b258636c980a9f915163bda
SHA1

efe9d2e60af6a2a48630f9569700fcbfa2614432
SHA256

54ae63cbfc8ffd4f1774f3bfa72767838e69ea8fb7462235e8ea2090ecbac6b1
SHA512

f0dc167766ff7769884c71ac26a552cf2cc5babcc56608884f11776a41f635a316094bc8f0a2ed50175f45a533bfec27e2b1b593fac0e90848e5f52ca0fb87b8
SSDEEP

24576:doGUbmtvDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDL:N9t

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\zrdccckq\ImagePath = "C:\\Windows\\SysWOW64\\zrdccckq\\bgcusvh.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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	e91f87757b258636c980a9f915163bda_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2372	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
996	bgcusvh.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 996 set thread context of 2372	996	bgcusvh.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
4816	sc.exe
4872	sc.exe
3244	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
3988	3644	WerFault.exe	81
3220	996	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	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	bgcusvh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e91f87757b258636c980a9f915163bda_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3644 wrote to memory of 2624	3644	e91f87757b258636c980a9f915163bda_JaffaCakes118.exe	82
PID 3644 wrote to memory of 2624	3644	e91f87757b258636c980a9f915163bda_JaffaCakes118.exe	82
PID 3644 wrote to memory of 2624	3644	e91f87757b258636c980a9f915163bda_JaffaCakes118.exe	82
PID 3644 wrote to memory of 3424	3644	e91f87757b258636c980a9f915163bda_JaffaCakes118.exe	84
PID 3644 wrote to memory of 3424	3644	e91f87757b258636c980a9f915163bda_JaffaCakes118.exe	84
PID 3644 wrote to memory of 3424	3644	e91f87757b258636c980a9f915163bda_JaffaCakes118.exe	84
PID 3644 wrote to memory of 4872	3644	e91f87757b258636c980a9f915163bda_JaffaCakes118.exe	86
PID 3644 wrote to memory of 4872	3644	e91f87757b258636c980a9f915163bda_JaffaCakes118.exe	86
PID 3644 wrote to memory of 4872	3644	e91f87757b258636c980a9f915163bda_JaffaCakes118.exe	86
PID 3644 wrote to memory of 3244	3644	e91f87757b258636c980a9f915163bda_JaffaCakes118.exe	88
PID 3644 wrote to memory of 3244	3644	e91f87757b258636c980a9f915163bda_JaffaCakes118.exe	88
PID 3644 wrote to memory of 3244	3644	e91f87757b258636c980a9f915163bda_JaffaCakes118.exe	88
PID 3644 wrote to memory of 4816	3644	e91f87757b258636c980a9f915163bda_JaffaCakes118.exe	90
PID 3644 wrote to memory of 4816	3644	e91f87757b258636c980a9f915163bda_JaffaCakes118.exe	90
PID 3644 wrote to memory of 4816	3644	e91f87757b258636c980a9f915163bda_JaffaCakes118.exe	90
PID 3644 wrote to memory of 1424	3644	e91f87757b258636c980a9f915163bda_JaffaCakes118.exe	93
PID 3644 wrote to memory of 1424	3644	e91f87757b258636c980a9f915163bda_JaffaCakes118.exe	93
PID 3644 wrote to memory of 1424	3644	e91f87757b258636c980a9f915163bda_JaffaCakes118.exe	93
PID 996 wrote to memory of 2372	996	bgcusvh.exe	98
PID 996 wrote to memory of 2372	996	bgcusvh.exe	98
PID 996 wrote to memory of 2372	996	bgcusvh.exe	98
PID 996 wrote to memory of 2372	996	bgcusvh.exe	98
PID 996 wrote to memory of 2372	996	bgcusvh.exe	98

C:\Users\Admin\AppData\Local\Temp\e91f87757b258636c980a9f915163bda_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e91f87757b258636c980a9f915163bda_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3644
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zrdccckq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2624
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bgcusvh.exe" C:\Windows\SysWOW64\zrdccckq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3424
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create zrdccckq binPath= "C:\Windows\SysWOW64\zrdccckq\bgcusvh.exe /d\"C:\Users\Admin\AppData\Local\Temp\e91f87757b258636c980a9f915163bda_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4872
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description zrdccckq "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3244
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start zrdccckq
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4816
- 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 3644 -s 1236
  2⤵
  - Program crash
  PID:3988

C:\Windows\SysWOW64\zrdccckq\bgcusvh.exe
C:\Windows\SysWOW64\zrdccckq\bgcusvh.exe /d"C:\Users\Admin\AppData\Local\Temp\e91f87757b258636c980a9f915163bda_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:996
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2372
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 996 -s 516
  2⤵
  - Program crash
  PID:3220

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3644 -ip 3644
1⤵
PID:3020

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 996 -ip 996
1⤵
PID:5000

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\bgcusvh.exe

Filesize
12.8MB

MD5
2219529dbd2477a87f47331e8576fc7f

SHA1
137713955a830842fb068c096ae256b4921873a3

SHA256
32d2f8da4b11bff8e77cf7fe7dcff44e318354468636af94154cbdd595c777a1

SHA512
f189d3469f4e16c5dffbdee3ee7830547ca8d8d0cad263de0b3ce54809a967d36b7c90055713246391952acd6ebb33caa40e8b6a071beb77576e038b625776e1

Download Submit
memory/996-15-0x0000000000400000-0x0000000002B8F000-memory.dmp

Filesize
39.6MB

Download
memory/2372-11-0x0000000000370000-0x0000000000385000-memory.dmp

Filesize
84KB

Download
memory/2372-13-0x0000000000370000-0x0000000000385000-memory.dmp

Filesize
84KB

Download
memory/2372-14-0x0000000000370000-0x0000000000385000-memory.dmp

Filesize
84KB

Download
memory/3644-1-0x0000000002E20000-0x0000000002F20000-memory.dmp

Filesize
1024KB

Download
memory/3644-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3644-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3644-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3644-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3644-8-0x0000000000400000-0x0000000002B8F000-memory.dmp

Filesize
39.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads