tofsee | e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f

General

Target

e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe
Size

13.9MB
MD5

74d022d0ed2f393fe0b210879b3456bb
SHA1

ae369acf20264ab7cb35b3301b12b14ad6e71d73
SHA256

e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f
SHA512

1ab7e4dd174754e0187e31149ec93c56f1a495bc4c4c815737df4d01d19eb50c9533bd947ccef75c3344bc17de62103ffa157e8c8a1cad9b8b60badd784b95a0
SSDEEP

393216:BMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMl:BMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMl

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

2268 netsh.exe

pid	process
2268	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\zprphnl\ImagePath = "C:\\Windows\\SysWOW64\\zprphnl\\clucqiqz.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:

e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2856 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

clucqiqz.exe

pid process

2868 clucqiqz.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

clucqiqz.exe

description pid process target process

PID 2868 set thread context of 2856 2868 clucqiqz.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

4596 sc.exe
3860 sc.exe
552 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2856	svchost.exe

pid	process
2868	clucqiqz.exe

description	pid	process	target process
PID 2868 set thread context of 2856	2868	clucqiqz.exe	svchost.exe

pid	process
4596	sc.exe
3860	sc.exe
552	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
3968	2388	WerFault.exe	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe
4420	2868	WerFault.exe	clucqiqz.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:

e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exesc.exenetsh.exesvchost.execmd.execmd.exesc.exesc.execlucqiqz.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.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	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	clucqiqz.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.execlucqiqz.exe

description	pid	process	target process
PID 2388 wrote to memory of 3320	2388	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	cmd.exe
PID 2388 wrote to memory of 3320	2388	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	cmd.exe
PID 2388 wrote to memory of 3320	2388	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	cmd.exe
PID 2388 wrote to memory of 4216	2388	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	cmd.exe
PID 2388 wrote to memory of 4216	2388	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	cmd.exe
PID 2388 wrote to memory of 4216	2388	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	cmd.exe
PID 2388 wrote to memory of 552	2388	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	sc.exe
PID 2388 wrote to memory of 552	2388	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	sc.exe
PID 2388 wrote to memory of 552	2388	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	sc.exe
PID 2388 wrote to memory of 4596	2388	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	sc.exe
PID 2388 wrote to memory of 4596	2388	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	sc.exe
PID 2388 wrote to memory of 4596	2388	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	sc.exe
PID 2388 wrote to memory of 3860	2388	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	sc.exe
PID 2388 wrote to memory of 3860	2388	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	sc.exe
PID 2388 wrote to memory of 3860	2388	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	sc.exe
PID 2388 wrote to memory of 2268	2388	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	netsh.exe
PID 2388 wrote to memory of 2268	2388	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	netsh.exe
PID 2388 wrote to memory of 2268	2388	e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe	netsh.exe
PID 2868 wrote to memory of 2856	2868	clucqiqz.exe	svchost.exe
PID 2868 wrote to memory of 2856	2868	clucqiqz.exe	svchost.exe
PID 2868 wrote to memory of 2856	2868	clucqiqz.exe	svchost.exe
PID 2868 wrote to memory of 2856	2868	clucqiqz.exe	svchost.exe
PID 2868 wrote to memory of 2856	2868	clucqiqz.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe
"C:\Users\Admin\AppData\Local\Temp\e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2388
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zprphnl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3320
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\clucqiqz.exe" C:\Windows\SysWOW64\zprphnl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4216
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create zprphnl binPath= "C:\Windows\SysWOW64\zprphnl\clucqiqz.exe /d\"C:\Users\Admin\AppData\Local\Temp\e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:552
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description zprphnl "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4596
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start zprphnl
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3860
- 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:2268
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2388 -s 644
  2⤵
  - Program crash
  PID:3968

C:\Windows\SysWOW64\zprphnl\clucqiqz.exe
C:\Windows\SysWOW64\zprphnl\clucqiqz.exe /d"C:\Users\Admin\AppData\Local\Temp\e4e8ef55981e665421399aadfd906c81d0dae7bf88b8f31f2979f4faa88fc46f.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2868
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2856
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2868 -s 556
  2⤵
  - Program crash
  PID:4420

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2388 -ip 2388
1⤵
PID:1832

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 2868 -ip 2868
1⤵
PID:404

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\clucqiqz.exe

Filesize
10.3MB

MD5
7997cf70c6d8fe1a7fbe7bcdcaba55cc

SHA1
3c8c990f02c843e59da80a8c000639b8298dc900

SHA256
1c17bf5070f93d934cd0628524309a4d6674505ea920c2ed582f2eba42384124

SHA512
64eaa47f5985611855ae37ca80a78bf5ea7039da50e642989fcf00ecfa1b27486d693d5ca566464050c97528d3b98b532199d560bb8d6cfaf40fd60e362f2f9d

Download Submit
memory/2388-0-0x0000000002FE0000-0x0000000002FED000-memory.dmp

Filesize
52KB

Download
memory/2388-1-0x0000000002FF0000-0x0000000003003000-memory.dmp

Filesize
76KB

Download
memory/2388-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2388-7-0x0000000002FE0000-0x0000000002FED000-memory.dmp

Filesize
52KB

Download
memory/2388-6-0x0000000000400000-0x0000000002F05000-memory.dmp

Filesize
43.0MB

Download
memory/2388-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2388-8-0x0000000002FF0000-0x0000000003003000-memory.dmp

Filesize
76KB

Download
memory/2856-10-0x0000000000F10000-0x0000000000F25000-memory.dmp

Filesize
84KB

Download
memory/2856-12-0x0000000000F10000-0x0000000000F25000-memory.dmp

Filesize
84KB

Download
memory/2856-13-0x0000000000F10000-0x0000000000F25000-memory.dmp

Filesize
84KB

Download
memory/2868-14-0x0000000000400000-0x0000000002F05000-memory.dmp

Filesize
43.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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