tofsee | 61dbcf0adaa64a67b42678fbdfffac4035ef4eb947f455d6bda7dc807e4a589c

General

Target

02efa58022f21dab1d400e8ddc3620c4_JaffaCakes118.exe
Size

10.6MB
MD5

02efa58022f21dab1d400e8ddc3620c4
SHA1

e805af3f400abe91974ad3a2b544a6e3b5f77b1a
SHA256

61dbcf0adaa64a67b42678fbdfffac4035ef4eb947f455d6bda7dc807e4a589c
SHA512

16ec166259460e33a60482212ce9cff12967add5a4fa0a5cb1ed3c0658e3627f6f9fe1990d509e48653920cd383e3d3e4ecd4d0c55778579beb626c9e8250a9e
SSDEEP

196608:d3qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqP:d

Score

10^/10

tofsee 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

2020 netsh.exe

pid	process
2020	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\rajrzovl\ImagePath = "C:\\Windows\\SysWOW64\\rajrzovl\\gjhcwdnx.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:

02efa58022f21dab1d400e8ddc3620c4_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	02efa58022f21dab1d400e8ddc3620c4_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

4484 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

gjhcwdnx.exe

pid process

2848 gjhcwdnx.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

gjhcwdnx.exe

description pid process target process

PID 2848 set thread context of 4484 2848 gjhcwdnx.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

4924 sc.exe
4496 sc.exe
2304 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4484	svchost.exe

pid	process
2848	gjhcwdnx.exe

description	pid	process	target process
PID 2848 set thread context of 4484	2848	gjhcwdnx.exe	svchost.exe

pid	process
4924	sc.exe
4496	sc.exe
2304	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

224 2848 WerFault.exe gjhcwdnx.exe
3300 2148 WerFault.exe 02efa58022f21dab1d400e8ddc3620c4_JaffaCakes118.exe

pid	pid_target	process	target process
224	2848	WerFault.exe	gjhcwdnx.exe
3300	2148	WerFault.exe	02efa58022f21dab1d400e8ddc3620c4_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

02efa58022f21dab1d400e8ddc3620c4_JaffaCakes118.exegjhcwdnx.exe

description	pid	process	target process
PID 2148 wrote to memory of 4780	2148	02efa58022f21dab1d400e8ddc3620c4_JaffaCakes118.exe	cmd.exe
PID 2148 wrote to memory of 4780	2148	02efa58022f21dab1d400e8ddc3620c4_JaffaCakes118.exe	cmd.exe
PID 2148 wrote to memory of 4780	2148	02efa58022f21dab1d400e8ddc3620c4_JaffaCakes118.exe	cmd.exe
PID 2148 wrote to memory of 1352	2148	02efa58022f21dab1d400e8ddc3620c4_JaffaCakes118.exe	cmd.exe
PID 2148 wrote to memory of 1352	2148	02efa58022f21dab1d400e8ddc3620c4_JaffaCakes118.exe	cmd.exe
PID 2148 wrote to memory of 1352	2148	02efa58022f21dab1d400e8ddc3620c4_JaffaCakes118.exe	cmd.exe
PID 2148 wrote to memory of 4924	2148	02efa58022f21dab1d400e8ddc3620c4_JaffaCakes118.exe	sc.exe
PID 2148 wrote to memory of 4924	2148	02efa58022f21dab1d400e8ddc3620c4_JaffaCakes118.exe	sc.exe
PID 2148 wrote to memory of 4924	2148	02efa58022f21dab1d400e8ddc3620c4_JaffaCakes118.exe	sc.exe
PID 2148 wrote to memory of 4496	2148	02efa58022f21dab1d400e8ddc3620c4_JaffaCakes118.exe	sc.exe
PID 2148 wrote to memory of 4496	2148	02efa58022f21dab1d400e8ddc3620c4_JaffaCakes118.exe	sc.exe
PID 2148 wrote to memory of 4496	2148	02efa58022f21dab1d400e8ddc3620c4_JaffaCakes118.exe	sc.exe
PID 2148 wrote to memory of 2304	2148	02efa58022f21dab1d400e8ddc3620c4_JaffaCakes118.exe	sc.exe
PID 2148 wrote to memory of 2304	2148	02efa58022f21dab1d400e8ddc3620c4_JaffaCakes118.exe	sc.exe
PID 2148 wrote to memory of 2304	2148	02efa58022f21dab1d400e8ddc3620c4_JaffaCakes118.exe	sc.exe
PID 2148 wrote to memory of 2020	2148	02efa58022f21dab1d400e8ddc3620c4_JaffaCakes118.exe	netsh.exe
PID 2148 wrote to memory of 2020	2148	02efa58022f21dab1d400e8ddc3620c4_JaffaCakes118.exe	netsh.exe
PID 2148 wrote to memory of 2020	2148	02efa58022f21dab1d400e8ddc3620c4_JaffaCakes118.exe	netsh.exe
PID 2848 wrote to memory of 4484	2848	gjhcwdnx.exe	svchost.exe
PID 2848 wrote to memory of 4484	2848	gjhcwdnx.exe	svchost.exe
PID 2848 wrote to memory of 4484	2848	gjhcwdnx.exe	svchost.exe
PID 2848 wrote to memory of 4484	2848	gjhcwdnx.exe	svchost.exe
PID 2848 wrote to memory of 4484	2848	gjhcwdnx.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\02efa58022f21dab1d400e8ddc3620c4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\02efa58022f21dab1d400e8ddc3620c4_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2148

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rajrzovl\
2⤵
PID:4780

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gjhcwdnx.exe" C:\Windows\SysWOW64\rajrzovl\
2⤵
PID:1352

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create rajrzovl binPath= "C:\Windows\SysWOW64\rajrzovl\gjhcwdnx.exe /d\"C:\Users\Admin\AppData\Local\Temp\02efa58022f21dab1d400e8ddc3620c4_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:4924

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description rajrzovl "wifi internet conection"
2⤵
- Launches sc.exe
PID:4496

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start rajrzovl
2⤵
- Launches sc.exe
PID:2304

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
PID:2020

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2148 -s 1268
2⤵
- Program crash
PID:3300

C:\Windows\SysWOW64\rajrzovl\gjhcwdnx.exe
C:\Windows\SysWOW64\rajrzovl\gjhcwdnx.exe /d"C:\Users\Admin\AppData\Local\Temp\02efa58022f21dab1d400e8ddc3620c4_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2848

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:4484

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2848 -s 516
2⤵
- Program crash
PID:224

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 2148 -ip 2148
1⤵
PID:860

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 2848 -ip 2848
1⤵
PID:4476

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 --no-appcompat-clear --mojo-platform-channel-handle=2268 --field-trial-handle=2244,i,11878111470816612087,2265290141962607370,262144 --variations-seed-version /prefetch:8
1⤵
PID:4868

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\gjhcwdnx.exe
Filesize
10.5MB

MD5
681bee07423513cbf660d3047b540cc2

SHA1
fc1847fc9bf47bbe47fa4206652d1452937e0936

SHA256
c457b2ab1465a316b6471b2946257964c27ff0619135c2f171ee0894d7567fa4

SHA512
b5ce173f418246078b38a9eb484af632120777b9bdf60bc6b73ea832579a421adf31615f3f59bae359476dea7eadf56fbac10ff96b5e9471330a24752aa3a7f0

Download Submit
memory/2148-20-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2148-9-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/2148-5-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/2148-2-0x00000000001D0000-0x00000000001E3000-memory.dmp

Filesize
76KB

Download
memory/2148-15-0x0000000000A00000-0x0000000000B00000-memory.dmp

Filesize
1024KB

Download
memory/2148-19-0x00000000001D0000-0x00000000001E3000-memory.dmp

Filesize
76KB

Download
memory/2148-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2148-1-0x0000000000A00000-0x0000000000B00000-memory.dmp

Filesize
1024KB

Download
memory/2848-11-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/2848-17-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/2848-10-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/4484-16-0x0000000001030000-0x0000000001045000-memory.dmp

Filesize
84KB

Download
memory/4484-12-0x0000000001030000-0x0000000001045000-memory.dmp

Filesize
84KB

Download
memory/4484-21-0x0000000001030000-0x0000000001045000-memory.dmp

Filesize
84KB

Download
memory/4484-22-0x0000000001030000-0x0000000001045000-memory.dmp

Filesize
84KB

Download
memory/4484-23-0x0000000001030000-0x0000000001045000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads