tofsee | 721e647c410d5b1a11fa7f0cf738fd5ebae93e22a3603ef717534eb127534b77

General

Target

15d4d4bc8ed67fa74d66fe6916c31b90_JaffaCakes118.exe
Size

239KB
MD5

15d4d4bc8ed67fa74d66fe6916c31b90
SHA1

60822f14ffc83bf592cf8680d7ee76e132288811
SHA256

721e647c410d5b1a11fa7f0cf738fd5ebae93e22a3603ef717534eb127534b77
SHA512

d66c56e07838c4d87f5bcf728cf4780bcc5d9cc509e40816d7518760f97ebe7394935a9fe7eba5b30e2d3ae201b07cdd26491c75ac798ed5fd74fe72ce0470f7
SSDEEP

6144:fesoFeYHECHsLsx6mihb12P5qpWV0m68jM7LjmpeM:fnu/HECz6S5QWlnqOpe

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

4968 netsh.exe

pid	process
4968	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\lsafqrxe\ImagePath = "C:\\Windows\\SysWOW64\\lsafqrxe\\mtfsbopj.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:

15d4d4bc8ed67fa74d66fe6916c31b90_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	15d4d4bc8ed67fa74d66fe6916c31b90_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

5084 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

mtfsbopj.exe

pid process

1500 mtfsbopj.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

mtfsbopj.exe

description pid process target process

PID 1500 set thread context of 5084 1500 mtfsbopj.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

3516 sc.exe
1228 sc.exe
3192 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
5084	svchost.exe

pid	process
1500	mtfsbopj.exe

description	pid	process	target process
PID 1500 set thread context of 5084	1500	mtfsbopj.exe	svchost.exe

pid	process
3516	sc.exe
1228	sc.exe
3192	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

3340 5872 WerFault.exe 15d4d4bc8ed67fa74d66fe6916c31b90_JaffaCakes118.exe
1532 1500 WerFault.exe mtfsbopj.exe

pid	pid_target	process	target process
3340	5872	WerFault.exe	15d4d4bc8ed67fa74d66fe6916c31b90_JaffaCakes118.exe
1532	1500	WerFault.exe	mtfsbopj.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:

cmd.exesc.exemtfsbopj.exe15d4d4bc8ed67fa74d66fe6916c31b90_JaffaCakes118.execmd.exesc.exesc.exenetsh.exesvchost.exe

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	mtfsbopj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	15d4d4bc8ed67fa74d66fe6916c31b90_JaffaCakes118.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

15d4d4bc8ed67fa74d66fe6916c31b90_JaffaCakes118.exemtfsbopj.exe

description	pid	process	target process
PID 5872 wrote to memory of 5636	5872	15d4d4bc8ed67fa74d66fe6916c31b90_JaffaCakes118.exe	cmd.exe
PID 5872 wrote to memory of 5636	5872	15d4d4bc8ed67fa74d66fe6916c31b90_JaffaCakes118.exe	cmd.exe
PID 5872 wrote to memory of 5636	5872	15d4d4bc8ed67fa74d66fe6916c31b90_JaffaCakes118.exe	cmd.exe
PID 5872 wrote to memory of 1520	5872	15d4d4bc8ed67fa74d66fe6916c31b90_JaffaCakes118.exe	cmd.exe
PID 5872 wrote to memory of 1520	5872	15d4d4bc8ed67fa74d66fe6916c31b90_JaffaCakes118.exe	cmd.exe
PID 5872 wrote to memory of 1520	5872	15d4d4bc8ed67fa74d66fe6916c31b90_JaffaCakes118.exe	cmd.exe
PID 5872 wrote to memory of 1228	5872	15d4d4bc8ed67fa74d66fe6916c31b90_JaffaCakes118.exe	sc.exe
PID 5872 wrote to memory of 1228	5872	15d4d4bc8ed67fa74d66fe6916c31b90_JaffaCakes118.exe	sc.exe
PID 5872 wrote to memory of 1228	5872	15d4d4bc8ed67fa74d66fe6916c31b90_JaffaCakes118.exe	sc.exe
PID 5872 wrote to memory of 3192	5872	15d4d4bc8ed67fa74d66fe6916c31b90_JaffaCakes118.exe	sc.exe
PID 5872 wrote to memory of 3192	5872	15d4d4bc8ed67fa74d66fe6916c31b90_JaffaCakes118.exe	sc.exe
PID 5872 wrote to memory of 3192	5872	15d4d4bc8ed67fa74d66fe6916c31b90_JaffaCakes118.exe	sc.exe
PID 5872 wrote to memory of 3516	5872	15d4d4bc8ed67fa74d66fe6916c31b90_JaffaCakes118.exe	sc.exe
PID 5872 wrote to memory of 3516	5872	15d4d4bc8ed67fa74d66fe6916c31b90_JaffaCakes118.exe	sc.exe
PID 5872 wrote to memory of 3516	5872	15d4d4bc8ed67fa74d66fe6916c31b90_JaffaCakes118.exe	sc.exe
PID 5872 wrote to memory of 4968	5872	15d4d4bc8ed67fa74d66fe6916c31b90_JaffaCakes118.exe	netsh.exe
PID 5872 wrote to memory of 4968	5872	15d4d4bc8ed67fa74d66fe6916c31b90_JaffaCakes118.exe	netsh.exe
PID 5872 wrote to memory of 4968	5872	15d4d4bc8ed67fa74d66fe6916c31b90_JaffaCakes118.exe	netsh.exe
PID 1500 wrote to memory of 5084	1500	mtfsbopj.exe	svchost.exe
PID 1500 wrote to memory of 5084	1500	mtfsbopj.exe	svchost.exe
PID 1500 wrote to memory of 5084	1500	mtfsbopj.exe	svchost.exe
PID 1500 wrote to memory of 5084	1500	mtfsbopj.exe	svchost.exe
PID 1500 wrote to memory of 5084	1500	mtfsbopj.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\15d4d4bc8ed67fa74d66fe6916c31b90_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\15d4d4bc8ed67fa74d66fe6916c31b90_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5872

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lsafqrxe\
2⤵
- System Location Discovery: System Language Discovery
PID:5636

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mtfsbopj.exe" C:\Windows\SysWOW64\lsafqrxe\
2⤵
- System Location Discovery: System Language Discovery
PID:1520

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create lsafqrxe binPath= "C:\Windows\SysWOW64\lsafqrxe\mtfsbopj.exe /d\"C:\Users\Admin\AppData\Local\Temp\15d4d4bc8ed67fa74d66fe6916c31b90_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:1228

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description lsafqrxe "wifi internet conection"
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:3192

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start lsafqrxe
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:3516

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:4968

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 5872 -s 1036
2⤵
- Program crash
PID:3340

C:\Windows\SysWOW64\lsafqrxe\mtfsbopj.exe
C:\Windows\SysWOW64\lsafqrxe\mtfsbopj.exe /d"C:\Users\Admin\AppData\Local\Temp\15d4d4bc8ed67fa74d66fe6916c31b90_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1500

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
- System Location Discovery: System Language Discovery
PID:5084

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1500 -s 512
2⤵
- Program crash
PID:1532

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 5872 -ip 5872
1⤵
PID:5788

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1500 -ip 1500
1⤵
PID:5804

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=4768,i,2904906934812054273,11716976550456127484,262144 --variations-seed-version --mojo-platform-channel-handle=4360 /prefetch:8
1⤵
PID:5612

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\mtfsbopj.exe

Filesize
14.1MB

MD5
bae377ae71892af78d6a9325421d5a55

SHA1
68f6192c5fb5a0043e3b223a0ae44aaf502e3112

SHA256
cdf218cdacfed774ef947149fca216072b4ea0a602724daef99513e87ae8433f

SHA512
d94b7be031e034dd7efbd1c0ccf8e7ebcf975b6c67061e6b834731d987553a273bae2251e537ad49d25abd5b28d26ff34bd719cc61b3b43ddf2a4ce00a4926fe

Download Submit
memory/1500-14-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/1500-15-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/5084-11-0x0000000000B70000-0x0000000000B85000-memory.dmp

Filesize
84KB

Download
memory/5084-13-0x0000000000B70000-0x0000000000B85000-memory.dmp

Filesize
84KB

Download
memory/5084-16-0x0000000000B70000-0x0000000000B85000-memory.dmp

Filesize
84KB

Download
memory/5872-1-0x0000000000A30000-0x0000000000B30000-memory.dmp

Filesize
1024KB

Download
memory/5872-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/5872-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5872-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5872-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/5872-8-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads