tofsee | 39d036a551bda39f12cb19872829595cc49592b2b67f045cc8af0e152dd5bfa1

General

Target

3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe
Size

13.9MB
MD5

3fdb3d1b28ad105c77c7b1506ae9c1fe
SHA1

e98ff352d4fd79d4b9e3f5909f3c82c01e22ec1c
SHA256

39d036a551bda39f12cb19872829595cc49592b2b67f045cc8af0e152dd5bfa1
SHA512

5630fb09f2d34bf3cd1051e52a56290434fc38c01182e822bc957849c0d56cdf41f4d6f2757b4467053adc1470c6e39116b687abbdc2bc069718a93d6540caea
SSDEEP

196608:BLad4qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq3:BL

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

224 netsh.exe

pid	process
224	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\pqiczfnl\ImagePath = "C:\\Windows\\SysWOW64\\pqiczfnl\\mkussirh.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:

3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-464762018-485119342-1613148473-1000\Control Panel\International\Geo\Nation	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

4924 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

mkussirh.exe

pid process

544 mkussirh.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

mkussirh.exe

description pid process target process

PID 544 set thread context of 4924 544 mkussirh.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

4640 sc.exe
556 sc.exe
1876 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4924	svchost.exe

pid	process
544	mkussirh.exe

description	pid	process	target process
PID 544 set thread context of 4924	544	mkussirh.exe	svchost.exe

pid	process
4640	sc.exe
556	sc.exe
1876	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

184 1772 WerFault.exe 3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe
4312 544 WerFault.exe mkussirh.exe

pid	pid_target	process	target process
184	1772	WerFault.exe	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe
4312	544	WerFault.exe	mkussirh.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exemkussirh.exe

description	pid	process	target process
PID 1772 wrote to memory of 3696	1772	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	cmd.exe
PID 1772 wrote to memory of 3696	1772	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	cmd.exe
PID 1772 wrote to memory of 3696	1772	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	cmd.exe
PID 1772 wrote to memory of 424	1772	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	cmd.exe
PID 1772 wrote to memory of 424	1772	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	cmd.exe
PID 1772 wrote to memory of 424	1772	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	cmd.exe
PID 1772 wrote to memory of 4640	1772	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	sc.exe
PID 1772 wrote to memory of 4640	1772	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	sc.exe
PID 1772 wrote to memory of 4640	1772	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	sc.exe
PID 1772 wrote to memory of 556	1772	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	sc.exe
PID 1772 wrote to memory of 556	1772	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	sc.exe
PID 1772 wrote to memory of 556	1772	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	sc.exe
PID 1772 wrote to memory of 1876	1772	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	sc.exe
PID 1772 wrote to memory of 1876	1772	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	sc.exe
PID 1772 wrote to memory of 1876	1772	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	sc.exe
PID 1772 wrote to memory of 224	1772	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	netsh.exe
PID 1772 wrote to memory of 224	1772	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	netsh.exe
PID 1772 wrote to memory of 224	1772	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	netsh.exe
PID 544 wrote to memory of 4924	544	mkussirh.exe	svchost.exe
PID 544 wrote to memory of 4924	544	mkussirh.exe	svchost.exe
PID 544 wrote to memory of 4924	544	mkussirh.exe	svchost.exe
PID 544 wrote to memory of 4924	544	mkussirh.exe	svchost.exe
PID 544 wrote to memory of 4924	544	mkussirh.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1772

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pqiczfnl\
2⤵
PID:3696

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mkussirh.exe" C:\Windows\SysWOW64\pqiczfnl\
2⤵
PID:424

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create pqiczfnl binPath= "C:\Windows\SysWOW64\pqiczfnl\mkussirh.exe /d\"C:\Users\Admin\AppData\Local\Temp\3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:4640

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description pqiczfnl "wifi internet conection"
2⤵
- Launches sc.exe
PID:556

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start pqiczfnl
2⤵
- Launches sc.exe
PID:1876

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:224

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1772 -s 1180
2⤵
- Program crash
PID:184

C:\Windows\SysWOW64\pqiczfnl\mkussirh.exe
C:\Windows\SysWOW64\pqiczfnl\mkussirh.exe /d"C:\Users\Admin\AppData\Local\Temp\3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:544

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:4924

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 544 -s 532
2⤵
- Program crash
PID:4312

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1772 -ip 1772
1⤵
PID:3928

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 544 -ip 544
1⤵
PID:4696

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\mkussirh.exe
Filesize
12.2MB

MD5
ac5145f91cd6341430bfd2f91a60681a

SHA1
2825de8f61ca11b7225315683c5ff7086bc1e633

SHA256
094f452c2de7db247c51df9b4b3e75cbe2c77d0130cbd5d80f566423b1a83d0d

SHA512
d880cc06c5b8577804d7ea61c31400cd4a25f44f657bd6dfdfb49a95a57a5c4d3ff6dd065e31c6dd8b400dbf4ca3f49c395bec4a6842e1f43e44bd7a7e35b1fc

Download Submit
memory/544-13-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/544-15-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/1772-1-0x0000000000B50000-0x0000000000C50000-memory.dmp

Filesize
1024KB

Download
memory/1772-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/1772-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1772-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1772-8-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/1772-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4924-11-0x0000000000720000-0x0000000000735000-memory.dmp

Filesize
84KB

Download
memory/4924-14-0x0000000000720000-0x0000000000735000-memory.dmp

Filesize
84KB

Download
memory/4924-17-0x0000000000720000-0x0000000000735000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads