tofsee | a8f1e1a6df372687c42edc522fc4c6b2f068bd05e8e5f56f92ffc037dd64e2d8

General

Target

dd2de935e742c9e508444e1cf0164886_JaffaCakes118.exe
Size

12.3MB
MD5

dd2de935e742c9e508444e1cf0164886
SHA1

f5c318ac0a60c5c468f31855c5fc34b9a888b790
SHA256

a8f1e1a6df372687c42edc522fc4c6b2f068bd05e8e5f56f92ffc037dd64e2d8
SHA512

c3aae71923e52e48e6e07d8a1eac1a7449cf20661f4836281e04c025c8db6a1046df6f4c2ea58f31b16cd860f6b02cd4367088f01280a38865eb7ac336879440
SSDEEP

393216:odQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ/:

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

4728 netsh.exe

pid	process
4728	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\eemsloht\ImagePath = "C:\\Windows\\SysWOW64\\eemsloht\\zcavpwgq.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:

dd2de935e742c9e508444e1cf0164886_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	dd2de935e742c9e508444e1cf0164886_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

4524 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

zcavpwgq.exe

pid process

4936 zcavpwgq.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

zcavpwgq.exe

description pid process target process

PID 4936 set thread context of 4524 4936 zcavpwgq.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

1624 sc.exe
4956 sc.exe
432 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4524	svchost.exe

pid	process
4936	zcavpwgq.exe

description	pid	process	target process
PID 4936 set thread context of 4524	4936	zcavpwgq.exe	svchost.exe

pid	process
1624	sc.exe
4956	sc.exe
432	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

1736 2240 WerFault.exe dd2de935e742c9e508444e1cf0164886_JaffaCakes118.exe
2724 4936 WerFault.exe zcavpwgq.exe

pid	pid_target	process	target process
1736	2240	WerFault.exe	dd2de935e742c9e508444e1cf0164886_JaffaCakes118.exe
2724	4936	WerFault.exe	zcavpwgq.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:

dd2de935e742c9e508444e1cf0164886_JaffaCakes118.execmd.exenetsh.exezcavpwgq.exesvchost.execmd.exesc.exesc.exesc.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dd2de935e742c9e508444e1cf0164886_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	zcavpwgq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

dd2de935e742c9e508444e1cf0164886_JaffaCakes118.exezcavpwgq.exe

description	pid	process	target process
PID 2240 wrote to memory of 2060	2240	dd2de935e742c9e508444e1cf0164886_JaffaCakes118.exe	cmd.exe
PID 2240 wrote to memory of 2060	2240	dd2de935e742c9e508444e1cf0164886_JaffaCakes118.exe	cmd.exe
PID 2240 wrote to memory of 2060	2240	dd2de935e742c9e508444e1cf0164886_JaffaCakes118.exe	cmd.exe
PID 2240 wrote to memory of 1140	2240	dd2de935e742c9e508444e1cf0164886_JaffaCakes118.exe	cmd.exe
PID 2240 wrote to memory of 1140	2240	dd2de935e742c9e508444e1cf0164886_JaffaCakes118.exe	cmd.exe
PID 2240 wrote to memory of 1140	2240	dd2de935e742c9e508444e1cf0164886_JaffaCakes118.exe	cmd.exe
PID 2240 wrote to memory of 1624	2240	dd2de935e742c9e508444e1cf0164886_JaffaCakes118.exe	sc.exe
PID 2240 wrote to memory of 1624	2240	dd2de935e742c9e508444e1cf0164886_JaffaCakes118.exe	sc.exe
PID 2240 wrote to memory of 1624	2240	dd2de935e742c9e508444e1cf0164886_JaffaCakes118.exe	sc.exe
PID 2240 wrote to memory of 4956	2240	dd2de935e742c9e508444e1cf0164886_JaffaCakes118.exe	sc.exe
PID 2240 wrote to memory of 4956	2240	dd2de935e742c9e508444e1cf0164886_JaffaCakes118.exe	sc.exe
PID 2240 wrote to memory of 4956	2240	dd2de935e742c9e508444e1cf0164886_JaffaCakes118.exe	sc.exe
PID 2240 wrote to memory of 432	2240	dd2de935e742c9e508444e1cf0164886_JaffaCakes118.exe	sc.exe
PID 2240 wrote to memory of 432	2240	dd2de935e742c9e508444e1cf0164886_JaffaCakes118.exe	sc.exe
PID 2240 wrote to memory of 432	2240	dd2de935e742c9e508444e1cf0164886_JaffaCakes118.exe	sc.exe
PID 2240 wrote to memory of 4728	2240	dd2de935e742c9e508444e1cf0164886_JaffaCakes118.exe	netsh.exe
PID 2240 wrote to memory of 4728	2240	dd2de935e742c9e508444e1cf0164886_JaffaCakes118.exe	netsh.exe
PID 2240 wrote to memory of 4728	2240	dd2de935e742c9e508444e1cf0164886_JaffaCakes118.exe	netsh.exe
PID 4936 wrote to memory of 4524	4936	zcavpwgq.exe	svchost.exe
PID 4936 wrote to memory of 4524	4936	zcavpwgq.exe	svchost.exe
PID 4936 wrote to memory of 4524	4936	zcavpwgq.exe	svchost.exe
PID 4936 wrote to memory of 4524	4936	zcavpwgq.exe	svchost.exe
PID 4936 wrote to memory of 4524	4936	zcavpwgq.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\dd2de935e742c9e508444e1cf0164886_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\dd2de935e742c9e508444e1cf0164886_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2240
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\eemsloht\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2060
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zcavpwgq.exe" C:\Windows\SysWOW64\eemsloht\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1140
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create eemsloht binPath= "C:\Windows\SysWOW64\eemsloht\zcavpwgq.exe /d\"C:\Users\Admin\AppData\Local\Temp\dd2de935e742c9e508444e1cf0164886_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1624
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description eemsloht "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4956
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start eemsloht
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:432
- 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:4728
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2240 -s 1188
  2⤵
  - Program crash
  PID:1736

C:\Windows\SysWOW64\eemsloht\zcavpwgq.exe
C:\Windows\SysWOW64\eemsloht\zcavpwgq.exe /d"C:\Users\Admin\AppData\Local\Temp\dd2de935e742c9e508444e1cf0164886_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4936
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4524
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4936 -s 516
  2⤵
  - Program crash
  PID:2724

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 2240 -ip 2240
1⤵
PID:4580

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4148,i,3387628439405076340,17957358341235678872,262144 --variations-seed-version --mojo-platform-channel-handle=4180 /prefetch:8
1⤵
PID:1280

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 4936 -ip 4936
1⤵
PID:3928

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\zcavpwgq.exe

Filesize
12.4MB

MD5
6dd2dd8838e195b3ea6f6e191b2452c5

SHA1
475dfd7b0132dc37c2ff91d695513d439702948d

SHA256
d90621a20ebe3ac548705f704407ca7c41d17900320b69517c775348234d6f48

SHA512
5f7b29b4568a6bfc9164add70500f2e568ba3922f09178fd3490845c83b6f2675da13d27a024e97c60fdff6ed864859f63817dd3048e80c400b083475e48387a

Download Submit
memory/2240-8-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2240-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2240-1-0x00000000005B0000-0x00000000006B0000-memory.dmp

Filesize
1024KB

Download
memory/2240-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2240-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2240-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4524-14-0x00000000010F0000-0x0000000001105000-memory.dmp

Filesize
84KB

Download
memory/4524-16-0x00000000010F0000-0x0000000001105000-memory.dmp

Filesize
84KB

Download
memory/4524-17-0x00000000010F0000-0x0000000001105000-memory.dmp

Filesize
84KB

Download
memory/4936-12-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4936-11-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4936-13-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4936-19-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads