tofsee | 8c63222a0b3b7fc5f95f5e2210af53321011e5907a1b2400cf7a8eb35a935d59

General

Target

797d18fdc2257084b4ef1d72567da313_JaffaCakes118.exe
Size

15.0MB
MD5

797d18fdc2257084b4ef1d72567da313
SHA1

d54a0fb342bb5ab844b86b922a8c7a5a8724168a
SHA256

8c63222a0b3b7fc5f95f5e2210af53321011e5907a1b2400cf7a8eb35a935d59
SHA512

c91cb7cf345e15897669aa0903974beaad66ee3e3b70ee50c523ea026fd6687720530ca5834b896e9fe1694171faec6c58b2709e2ac31a947d170e187eca90e7
SSDEEP

393216:lLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLP:

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
Tofsee family
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

1896 netsh.exe

pid	process
1896	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\uctaxlwl\ImagePath = "C:\\Windows\\SysWOW64\\uctaxlwl\\pfamgswo.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:

797d18fdc2257084b4ef1d72567da313_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	797d18fdc2257084b4ef1d72567da313_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

4588 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

pfamgswo.exe

pid process

1696 pfamgswo.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

pfamgswo.exe

description pid process target process

PID 1696 set thread context of 4588 1696 pfamgswo.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

4984 sc.exe
2672 sc.exe
4668 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4588	svchost.exe

pid	process
1696	pfamgswo.exe

description	pid	process	target process
PID 1696 set thread context of 4588	1696	pfamgswo.exe	svchost.exe

pid	process
4984	sc.exe
2672	sc.exe
4668	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

1308 3292 WerFault.exe 797d18fdc2257084b4ef1d72567da313_JaffaCakes118.exe
2828 1696 WerFault.exe pfamgswo.exe

pid	pid_target	process	target process
1308	3292	WerFault.exe	797d18fdc2257084b4ef1d72567da313_JaffaCakes118.exe
2828	1696	WerFault.exe	pfamgswo.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:

svchost.exe797d18fdc2257084b4ef1d72567da313_JaffaCakes118.execmd.exesc.exesc.exenetsh.exepfamgswo.execmd.exesc.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	797d18fdc2257084b4ef1d72567da313_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	pfamgswo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

797d18fdc2257084b4ef1d72567da313_JaffaCakes118.exepfamgswo.exe

description	pid	process	target process
PID 3292 wrote to memory of 3892	3292	797d18fdc2257084b4ef1d72567da313_JaffaCakes118.exe	cmd.exe
PID 3292 wrote to memory of 3892	3292	797d18fdc2257084b4ef1d72567da313_JaffaCakes118.exe	cmd.exe
PID 3292 wrote to memory of 3892	3292	797d18fdc2257084b4ef1d72567da313_JaffaCakes118.exe	cmd.exe
PID 3292 wrote to memory of 4908	3292	797d18fdc2257084b4ef1d72567da313_JaffaCakes118.exe	cmd.exe
PID 3292 wrote to memory of 4908	3292	797d18fdc2257084b4ef1d72567da313_JaffaCakes118.exe	cmd.exe
PID 3292 wrote to memory of 4908	3292	797d18fdc2257084b4ef1d72567da313_JaffaCakes118.exe	cmd.exe
PID 3292 wrote to memory of 4984	3292	797d18fdc2257084b4ef1d72567da313_JaffaCakes118.exe	sc.exe
PID 3292 wrote to memory of 4984	3292	797d18fdc2257084b4ef1d72567da313_JaffaCakes118.exe	sc.exe
PID 3292 wrote to memory of 4984	3292	797d18fdc2257084b4ef1d72567da313_JaffaCakes118.exe	sc.exe
PID 3292 wrote to memory of 2672	3292	797d18fdc2257084b4ef1d72567da313_JaffaCakes118.exe	sc.exe
PID 3292 wrote to memory of 2672	3292	797d18fdc2257084b4ef1d72567da313_JaffaCakes118.exe	sc.exe
PID 3292 wrote to memory of 2672	3292	797d18fdc2257084b4ef1d72567da313_JaffaCakes118.exe	sc.exe
PID 3292 wrote to memory of 4668	3292	797d18fdc2257084b4ef1d72567da313_JaffaCakes118.exe	sc.exe
PID 3292 wrote to memory of 4668	3292	797d18fdc2257084b4ef1d72567da313_JaffaCakes118.exe	sc.exe
PID 3292 wrote to memory of 4668	3292	797d18fdc2257084b4ef1d72567da313_JaffaCakes118.exe	sc.exe
PID 3292 wrote to memory of 1896	3292	797d18fdc2257084b4ef1d72567da313_JaffaCakes118.exe	netsh.exe
PID 3292 wrote to memory of 1896	3292	797d18fdc2257084b4ef1d72567da313_JaffaCakes118.exe	netsh.exe
PID 3292 wrote to memory of 1896	3292	797d18fdc2257084b4ef1d72567da313_JaffaCakes118.exe	netsh.exe
PID 1696 wrote to memory of 4588	1696	pfamgswo.exe	svchost.exe
PID 1696 wrote to memory of 4588	1696	pfamgswo.exe	svchost.exe
PID 1696 wrote to memory of 4588	1696	pfamgswo.exe	svchost.exe
PID 1696 wrote to memory of 4588	1696	pfamgswo.exe	svchost.exe
PID 1696 wrote to memory of 4588	1696	pfamgswo.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\797d18fdc2257084b4ef1d72567da313_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\797d18fdc2257084b4ef1d72567da313_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3292
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\uctaxlwl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3892
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pfamgswo.exe" C:\Windows\SysWOW64\uctaxlwl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4908
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create uctaxlwl binPath= "C:\Windows\SysWOW64\uctaxlwl\pfamgswo.exe /d\"C:\Users\Admin\AppData\Local\Temp\797d18fdc2257084b4ef1d72567da313_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4984
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description uctaxlwl "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2672
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start uctaxlwl
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4668
- 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:1896
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3292 -s 1040
  2⤵
  - Program crash
  PID:1308

C:\Windows\SysWOW64\uctaxlwl\pfamgswo.exe
C:\Windows\SysWOW64\uctaxlwl\pfamgswo.exe /d"C:\Users\Admin\AppData\Local\Temp\797d18fdc2257084b4ef1d72567da313_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1696
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4588
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1696 -s 508
  2⤵
  - Program crash
  PID:2828

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3292 -ip 3292
1⤵
PID:2024

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 1696 -ip 1696
1⤵
PID:1612

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\pfamgswo.exe

Filesize
10.2MB

MD5
b7ad12dcd80eca501d555190379f1bea

SHA1
f577d458222fd5928a28ef17314238867776fd50

SHA256
6a18320af93273412b20c8c590a9733073654f479446cc606e30c1fb1a7853c9

SHA512
43e024b15fff83c91f29694a8c15bf0103521aed7570e998d044c17140d33fa2a16cc952f00b1e83b460ecafa460e9c21abfbf918a0b67f59bd39a4c3ac89269

Download Submit
memory/1696-13-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/1696-11-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/1696-12-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/1696-18-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/3292-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3292-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3292-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3292-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3292-8-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/3292-1-0x00000000005C0000-0x00000000006C0000-memory.dmp

Filesize
1024KB

Download
memory/4588-14-0x0000000000450000-0x0000000000465000-memory.dmp

Filesize
84KB

Download
memory/4588-16-0x0000000000450000-0x0000000000465000-memory.dmp

Filesize
84KB

Download
memory/4588-17-0x0000000000450000-0x0000000000465000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads