tofsee | ca5bb759e9f0677df3b9770fa4dc049aa3bba670a8a4a687da7c8f98ea006eaf

General

Target

f9e1d7d2519ce613a8c5ac3ce9c848d4_JaffaCakes118.exe
Size

13.3MB
MD5

f9e1d7d2519ce613a8c5ac3ce9c848d4
SHA1

c6e51f42fe2e18053ee1a292199fc371c75b69fa
SHA256

ca5bb759e9f0677df3b9770fa4dc049aa3bba670a8a4a687da7c8f98ea006eaf
SHA512

955166b5c8c76bed92a4d234fe0e0d84068f4f07e601095ea9ca480879c6be67d3bd59c6f59b0963cc90e1f9e24b8226c9f10c2e36b1468e1073cbae69faa8fb
SSDEEP

393216:8xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxL:

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
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

Processes:

netsh.exe

pid process

3960 netsh.exe

pid	process
3960	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\ojjhtani\ImagePath = "C:\\Windows\\SysWOW64\\ojjhtani\\vcalqlzn.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

Processes:

f9e1d7d2519ce613a8c5ac3ce9c848d4_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	f9e1d7d2519ce613a8c5ac3ce9c848d4_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

3044 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

vcalqlzn.exe

pid process

2764 vcalqlzn.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

vcalqlzn.exe

description pid process target process

PID 2764 set thread context of 3044 2764 vcalqlzn.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

2672 sc.exe
2676 sc.exe
2244 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3044	svchost.exe

pid	process
2764	vcalqlzn.exe

description	pid	process	target process
PID 2764 set thread context of 3044	2764	vcalqlzn.exe	svchost.exe

pid	process
2672	sc.exe
2676	sc.exe
2244	sc.exe

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

Processes:

netsh.exe

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

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

4436 412 WerFault.exe f9e1d7d2519ce613a8c5ac3ce9c848d4_JaffaCakes118.exe
548 2764 WerFault.exe vcalqlzn.exe

pid	pid_target	process	target process
4436	412	WerFault.exe	f9e1d7d2519ce613a8c5ac3ce9c848d4_JaffaCakes118.exe
548	2764	WerFault.exe	vcalqlzn.exe

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

Processes:

sc.exef9e1d7d2519ce613a8c5ac3ce9c848d4_JaffaCakes118.execmd.execmd.exesc.exesc.exenetsh.exevcalqlzn.exesvchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f9e1d7d2519ce613a8c5ac3ce9c848d4_JaffaCakes118.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vcalqlzn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

f9e1d7d2519ce613a8c5ac3ce9c848d4_JaffaCakes118.exevcalqlzn.exe

description	pid	process	target process
PID 412 wrote to memory of 3924	412	f9e1d7d2519ce613a8c5ac3ce9c848d4_JaffaCakes118.exe	cmd.exe
PID 412 wrote to memory of 3924	412	f9e1d7d2519ce613a8c5ac3ce9c848d4_JaffaCakes118.exe	cmd.exe
PID 412 wrote to memory of 3924	412	f9e1d7d2519ce613a8c5ac3ce9c848d4_JaffaCakes118.exe	cmd.exe
PID 412 wrote to memory of 1536	412	f9e1d7d2519ce613a8c5ac3ce9c848d4_JaffaCakes118.exe	cmd.exe
PID 412 wrote to memory of 1536	412	f9e1d7d2519ce613a8c5ac3ce9c848d4_JaffaCakes118.exe	cmd.exe
PID 412 wrote to memory of 1536	412	f9e1d7d2519ce613a8c5ac3ce9c848d4_JaffaCakes118.exe	cmd.exe
PID 412 wrote to memory of 2672	412	f9e1d7d2519ce613a8c5ac3ce9c848d4_JaffaCakes118.exe	sc.exe
PID 412 wrote to memory of 2672	412	f9e1d7d2519ce613a8c5ac3ce9c848d4_JaffaCakes118.exe	sc.exe
PID 412 wrote to memory of 2672	412	f9e1d7d2519ce613a8c5ac3ce9c848d4_JaffaCakes118.exe	sc.exe
PID 412 wrote to memory of 2676	412	f9e1d7d2519ce613a8c5ac3ce9c848d4_JaffaCakes118.exe	sc.exe
PID 412 wrote to memory of 2676	412	f9e1d7d2519ce613a8c5ac3ce9c848d4_JaffaCakes118.exe	sc.exe
PID 412 wrote to memory of 2676	412	f9e1d7d2519ce613a8c5ac3ce9c848d4_JaffaCakes118.exe	sc.exe
PID 412 wrote to memory of 2244	412	f9e1d7d2519ce613a8c5ac3ce9c848d4_JaffaCakes118.exe	sc.exe
PID 412 wrote to memory of 2244	412	f9e1d7d2519ce613a8c5ac3ce9c848d4_JaffaCakes118.exe	sc.exe
PID 412 wrote to memory of 2244	412	f9e1d7d2519ce613a8c5ac3ce9c848d4_JaffaCakes118.exe	sc.exe
PID 412 wrote to memory of 3960	412	f9e1d7d2519ce613a8c5ac3ce9c848d4_JaffaCakes118.exe	netsh.exe
PID 412 wrote to memory of 3960	412	f9e1d7d2519ce613a8c5ac3ce9c848d4_JaffaCakes118.exe	netsh.exe
PID 412 wrote to memory of 3960	412	f9e1d7d2519ce613a8c5ac3ce9c848d4_JaffaCakes118.exe	netsh.exe
PID 2764 wrote to memory of 3044	2764	vcalqlzn.exe	svchost.exe
PID 2764 wrote to memory of 3044	2764	vcalqlzn.exe	svchost.exe
PID 2764 wrote to memory of 3044	2764	vcalqlzn.exe	svchost.exe
PID 2764 wrote to memory of 3044	2764	vcalqlzn.exe	svchost.exe
PID 2764 wrote to memory of 3044	2764	vcalqlzn.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f9e1d7d2519ce613a8c5ac3ce9c848d4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f9e1d7d2519ce613a8c5ac3ce9c848d4_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:412
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ojjhtani\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3924
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vcalqlzn.exe" C:\Windows\SysWOW64\ojjhtani\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1536
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ojjhtani binPath= "C:\Windows\SysWOW64\ojjhtani\vcalqlzn.exe /d\"C:\Users\Admin\AppData\Local\Temp\f9e1d7d2519ce613a8c5ac3ce9c848d4_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2672
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ojjhtani "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2676
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ojjhtani
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2244
- 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:3960
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 412 -s 676
  2⤵
  - Program crash
  PID:4436

C:\Windows\SysWOW64\ojjhtani\vcalqlzn.exe
C:\Windows\SysWOW64\ojjhtani\vcalqlzn.exe /d"C:\Users\Admin\AppData\Local\Temp\f9e1d7d2519ce613a8c5ac3ce9c848d4_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2764
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3044
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2764 -s 512
  2⤵
  - Program crash
  PID:548

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 412 -ip 412
1⤵
PID:2184

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2764 -ip 2764
1⤵
PID:5076

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\vcalqlzn.exe

Filesize
11.2MB

MD5
71437eff469dec41d890ae8ddf46d282

SHA1
13a649c36abfcc07790f9e67079fe35f3643d3bd

SHA256
8de5bb0a29cf32ef6c18df20f2f21510d72b3699563a88998a76fab240589b4a

SHA512
98cb7a33e92e2a2f58195365e30b4e77c935297f6d2e3ad0dd36d8dc6193621de5b3e014bb8161cd3aca68c7f613ab84769ec015de370f1548e5859f49cd5db7

Download Submit
memory/412-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/412-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/412-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/412-8-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/412-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/412-1-0x0000000000740000-0x0000000000840000-memory.dmp

Filesize
1024KB

Download
memory/2764-11-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2764-12-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2764-13-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2764-18-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/3044-14-0x0000000000140000-0x0000000000155000-memory.dmp

Filesize
84KB

Download
memory/3044-16-0x0000000000140000-0x0000000000155000-memory.dmp

Filesize
84KB

Download
memory/3044-17-0x0000000000140000-0x0000000000155000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads