tofsee | ba4e6a37a573d52c8662858559fc0ce0b99156bbbb56b44762912243c4abe39c

General

Target

ba4e6a37a573d52c8662858559fc0ce0b99156bbbb56b44762912243c4abe39c.exe
Size

13.5MB
MD5

d10e66a249b3d6e9523b2ef377a732e0
SHA1

bbebd8b6af0275d16f7613451665f9e749bcec45
SHA256

ba4e6a37a573d52c8662858559fc0ce0b99156bbbb56b44762912243c4abe39c
SHA512

df255294220063308eb1155cd5f8a299f8e3f64084aa0d66178f69bf1ebe6245a861c6070a9fdeda4ab75a9870bfde4b8745c56ddd638197925b892556ff3ea2
SSDEEP

6144:NpQ6t5O5aSeJhB5Cnyt+dg/KRJC8jbPzxRL2RjZyjSIQf4GFx:Nm6+8Rhqnycdg/SljbbxRL+Z6Sr7Fx

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.ru

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
1588	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\kwucilpj\ImagePath = "C:\\Windows\\SysWOW64\\kwucilpj\\phzgfwho.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:

ba4e6a37a573d52c8662858559fc0ce0b99156bbbb56b44762912243c4abe39c.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	ba4e6a37a573d52c8662858559fc0ce0b99156bbbb56b44762912243c4abe39c.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid	Process
816	svchost.exe

Executes dropped EXE 1 IoCs

Processes:

phzgfwho.exe

pid	Process
216	phzgfwho.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

phzgfwho.exe

description	pid	Process	procid_target
PID 216 set thread context of 816	216	phzgfwho.exe	102

Launches sc.exe 3 IoCs

Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid	Process
4508	sc.exe
1644	sc.exe
5036	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid	pid_target	Process	procid_target
1680	5084	WerFault.exe	81
748	216	WerFault.exe	96

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.execmd.exesc.exenetsh.exesvchost.exeba4e6a37a573d52c8662858559fc0ce0b99156bbbb56b44762912243c4abe39c.exesc.exesc.exephzgfwho.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ba4e6a37a573d52c8662858559fc0ce0b99156bbbb56b44762912243c4abe39c.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	phzgfwho.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

ba4e6a37a573d52c8662858559fc0ce0b99156bbbb56b44762912243c4abe39c.exephzgfwho.exe

description	pid	Process	procid_target
PID 5084 wrote to memory of 4744	5084	ba4e6a37a573d52c8662858559fc0ce0b99156bbbb56b44762912243c4abe39c.exe	82
PID 5084 wrote to memory of 4744	5084	ba4e6a37a573d52c8662858559fc0ce0b99156bbbb56b44762912243c4abe39c.exe	82
PID 5084 wrote to memory of 4744	5084	ba4e6a37a573d52c8662858559fc0ce0b99156bbbb56b44762912243c4abe39c.exe	82
PID 5084 wrote to memory of 4596	5084	ba4e6a37a573d52c8662858559fc0ce0b99156bbbb56b44762912243c4abe39c.exe	86
PID 5084 wrote to memory of 4596	5084	ba4e6a37a573d52c8662858559fc0ce0b99156bbbb56b44762912243c4abe39c.exe	86
PID 5084 wrote to memory of 4596	5084	ba4e6a37a573d52c8662858559fc0ce0b99156bbbb56b44762912243c4abe39c.exe	86
PID 5084 wrote to memory of 4508	5084	ba4e6a37a573d52c8662858559fc0ce0b99156bbbb56b44762912243c4abe39c.exe	88
PID 5084 wrote to memory of 4508	5084	ba4e6a37a573d52c8662858559fc0ce0b99156bbbb56b44762912243c4abe39c.exe	88
PID 5084 wrote to memory of 4508	5084	ba4e6a37a573d52c8662858559fc0ce0b99156bbbb56b44762912243c4abe39c.exe	88
PID 5084 wrote to memory of 1644	5084	ba4e6a37a573d52c8662858559fc0ce0b99156bbbb56b44762912243c4abe39c.exe	92
PID 5084 wrote to memory of 1644	5084	ba4e6a37a573d52c8662858559fc0ce0b99156bbbb56b44762912243c4abe39c.exe	92
PID 5084 wrote to memory of 1644	5084	ba4e6a37a573d52c8662858559fc0ce0b99156bbbb56b44762912243c4abe39c.exe	92
PID 5084 wrote to memory of 5036	5084	ba4e6a37a573d52c8662858559fc0ce0b99156bbbb56b44762912243c4abe39c.exe	94
PID 5084 wrote to memory of 5036	5084	ba4e6a37a573d52c8662858559fc0ce0b99156bbbb56b44762912243c4abe39c.exe	94
PID 5084 wrote to memory of 5036	5084	ba4e6a37a573d52c8662858559fc0ce0b99156bbbb56b44762912243c4abe39c.exe	94
PID 5084 wrote to memory of 1588	5084	ba4e6a37a573d52c8662858559fc0ce0b99156bbbb56b44762912243c4abe39c.exe	97
PID 5084 wrote to memory of 1588	5084	ba4e6a37a573d52c8662858559fc0ce0b99156bbbb56b44762912243c4abe39c.exe	97
PID 5084 wrote to memory of 1588	5084	ba4e6a37a573d52c8662858559fc0ce0b99156bbbb56b44762912243c4abe39c.exe	97
PID 216 wrote to memory of 816	216	phzgfwho.exe	102
PID 216 wrote to memory of 816	216	phzgfwho.exe	102
PID 216 wrote to memory of 816	216	phzgfwho.exe	102
PID 216 wrote to memory of 816	216	phzgfwho.exe	102
PID 216 wrote to memory of 816	216	phzgfwho.exe	102

C:\Users\Admin\AppData\Local\Temp\ba4e6a37a573d52c8662858559fc0ce0b99156bbbb56b44762912243c4abe39c.exe
"C:\Users\Admin\AppData\Local\Temp\ba4e6a37a573d52c8662858559fc0ce0b99156bbbb56b44762912243c4abe39c.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5084
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kwucilpj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4744
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\phzgfwho.exe" C:\Windows\SysWOW64\kwucilpj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4596
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create kwucilpj binPath= "C:\Windows\SysWOW64\kwucilpj\phzgfwho.exe /d\"C:\Users\Admin\AppData\Local\Temp\ba4e6a37a573d52c8662858559fc0ce0b99156bbbb56b44762912243c4abe39c.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4508
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description kwucilpj "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1644
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start kwucilpj
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5036
- 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:1588
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5084 -s 1204
  2⤵
  - Program crash
  PID:1680

C:\Windows\SysWOW64\kwucilpj\phzgfwho.exe
C:\Windows\SysWOW64\kwucilpj\phzgfwho.exe /d"C:\Users\Admin\AppData\Local\Temp\ba4e6a37a573d52c8662858559fc0ce0b99156bbbb56b44762912243c4abe39c.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:216
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:816
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 216 -s 516
  2⤵
  - Program crash
  PID:748

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 5084 -ip 5084
1⤵
PID:5032

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 216 -ip 216
1⤵
PID:2820

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\phzgfwho.exe

Filesize
13.9MB

MD5
6630bc8a1a81a0680e65485a077c3b60

SHA1
53b8f4d63370b570ea7166268ce7480c121bfdda

SHA256
f451988a7ebd8fad384cee12cea39100f37ea5785609a2574dc757c12dd5dc22

SHA512
e3b07ab7a19725adc79f0fbfeeb2e0fdec4be810b05991e0c097a671437a3815c4a13125ac4768674c220a002b2a2adc410476a6370da75e25bbd151b0bacdcc

Download Submit
memory/216-11-0x0000000000400000-0x0000000000788000-memory.dmp

Filesize
3.5MB

Download
memory/216-16-0x0000000000400000-0x0000000000788000-memory.dmp

Filesize
3.5MB

Download
memory/816-12-0x0000000001050000-0x0000000001065000-memory.dmp

Filesize
84KB

Download
memory/816-14-0x0000000001050000-0x0000000001065000-memory.dmp

Filesize
84KB

Download
memory/816-15-0x0000000001050000-0x0000000001065000-memory.dmp

Filesize
84KB

Download
memory/5084-1-0x00000000009B0000-0x0000000000AB0000-memory.dmp

Filesize
1024KB

Download
memory/5084-2-0x0000000000940000-0x0000000000953000-memory.dmp

Filesize
76KB

Download
memory/5084-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5084-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5084-8-0x0000000000400000-0x0000000000788000-memory.dmp

Filesize
3.5MB

Download
memory/5084-9-0x0000000000940000-0x0000000000953000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads