tofsee | 94c44c1feea87dc133e282cc400aa42253437a7507e322bdd4bb9b0f1583c43c

General

Target

94c44c1feea87dc133e282cc400aa42253437a7507e322bdd4bb9b0f1583c43c.exe
Size

13.0MB
MD5

69c888117b9871c18a2e6bcdd3daf0ed
SHA1

73d9450909f4e5720dc710634bd5a600f55b2d65
SHA256

94c44c1feea87dc133e282cc400aa42253437a7507e322bdd4bb9b0f1583c43c
SHA512

6f4fe3799aea3821aa6b4e9562ab2f7ef36b664baad502f2dd24489f9b31c84f85bb8d3a2f97361247a664ab23d7557983bd2c8176810f25454985eeb2a2110b
SSDEEP

196608:lYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYU:e

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
1412	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\lynoholh\ImagePath = "C:\\Windows\\SysWOW64\\lynoholh\\pzerytsh.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:

94c44c1feea87dc133e282cc400aa42253437a7507e322bdd4bb9b0f1583c43c.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	94c44c1feea87dc133e282cc400aa42253437a7507e322bdd4bb9b0f1583c43c.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid	Process
4176	svchost.exe

Executes dropped EXE 1 IoCs

Processes:

pzerytsh.exe

pid	Process
2892	pzerytsh.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

pzerytsh.exe

description	pid	Process	procid_target
PID 2892 set thread context of 4176	2892	pzerytsh.exe	110

Launches sc.exe 3 IoCs

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

Processes:

sc.exesc.exesc.exe

pid	Process
2216	sc.exe
2532	sc.exe
4180	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 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	procid_target
3448	2256	WerFault.exe	82
2876	2892	WerFault.exe	101

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.exe94c44c1feea87dc133e282cc400aa42253437a7507e322bdd4bb9b0f1583c43c.exesc.exepzerytsh.exesc.exenetsh.execmd.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	94c44c1feea87dc133e282cc400aa42253437a7507e322bdd4bb9b0f1583c43c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	pzerytsh.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	cmd.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:

94c44c1feea87dc133e282cc400aa42253437a7507e322bdd4bb9b0f1583c43c.exepzerytsh.exe

description	pid	Process	procid_target
PID 2256 wrote to memory of 3516	2256	94c44c1feea87dc133e282cc400aa42253437a7507e322bdd4bb9b0f1583c43c.exe	83
PID 2256 wrote to memory of 3516	2256	94c44c1feea87dc133e282cc400aa42253437a7507e322bdd4bb9b0f1583c43c.exe	83
PID 2256 wrote to memory of 3516	2256	94c44c1feea87dc133e282cc400aa42253437a7507e322bdd4bb9b0f1583c43c.exe	83
PID 2256 wrote to memory of 2008	2256	94c44c1feea87dc133e282cc400aa42253437a7507e322bdd4bb9b0f1583c43c.exe	88
PID 2256 wrote to memory of 2008	2256	94c44c1feea87dc133e282cc400aa42253437a7507e322bdd4bb9b0f1583c43c.exe	88
PID 2256 wrote to memory of 2008	2256	94c44c1feea87dc133e282cc400aa42253437a7507e322bdd4bb9b0f1583c43c.exe	88
PID 2256 wrote to memory of 4180	2256	94c44c1feea87dc133e282cc400aa42253437a7507e322bdd4bb9b0f1583c43c.exe	90
PID 2256 wrote to memory of 4180	2256	94c44c1feea87dc133e282cc400aa42253437a7507e322bdd4bb9b0f1583c43c.exe	90
PID 2256 wrote to memory of 4180	2256	94c44c1feea87dc133e282cc400aa42253437a7507e322bdd4bb9b0f1583c43c.exe	90
PID 2256 wrote to memory of 2216	2256	94c44c1feea87dc133e282cc400aa42253437a7507e322bdd4bb9b0f1583c43c.exe	97
PID 2256 wrote to memory of 2216	2256	94c44c1feea87dc133e282cc400aa42253437a7507e322bdd4bb9b0f1583c43c.exe	97
PID 2256 wrote to memory of 2216	2256	94c44c1feea87dc133e282cc400aa42253437a7507e322bdd4bb9b0f1583c43c.exe	97
PID 2256 wrote to memory of 2532	2256	94c44c1feea87dc133e282cc400aa42253437a7507e322bdd4bb9b0f1583c43c.exe	99
PID 2256 wrote to memory of 2532	2256	94c44c1feea87dc133e282cc400aa42253437a7507e322bdd4bb9b0f1583c43c.exe	99
PID 2256 wrote to memory of 2532	2256	94c44c1feea87dc133e282cc400aa42253437a7507e322bdd4bb9b0f1583c43c.exe	99
PID 2256 wrote to memory of 1412	2256	94c44c1feea87dc133e282cc400aa42253437a7507e322bdd4bb9b0f1583c43c.exe	102
PID 2256 wrote to memory of 1412	2256	94c44c1feea87dc133e282cc400aa42253437a7507e322bdd4bb9b0f1583c43c.exe	102
PID 2256 wrote to memory of 1412	2256	94c44c1feea87dc133e282cc400aa42253437a7507e322bdd4bb9b0f1583c43c.exe	102
PID 2892 wrote to memory of 4176	2892	pzerytsh.exe	110
PID 2892 wrote to memory of 4176	2892	pzerytsh.exe	110
PID 2892 wrote to memory of 4176	2892	pzerytsh.exe	110
PID 2892 wrote to memory of 4176	2892	pzerytsh.exe	110
PID 2892 wrote to memory of 4176	2892	pzerytsh.exe	110

C:\Users\Admin\AppData\Local\Temp\94c44c1feea87dc133e282cc400aa42253437a7507e322bdd4bb9b0f1583c43c.exe
"C:\Users\Admin\AppData\Local\Temp\94c44c1feea87dc133e282cc400aa42253437a7507e322bdd4bb9b0f1583c43c.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2256
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lynoholh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3516
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pzerytsh.exe" C:\Windows\SysWOW64\lynoholh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2008
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create lynoholh binPath= "C:\Windows\SysWOW64\lynoholh\pzerytsh.exe /d\"C:\Users\Admin\AppData\Local\Temp\94c44c1feea87dc133e282cc400aa42253437a7507e322bdd4bb9b0f1583c43c.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4180
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description lynoholh "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2216
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start lynoholh
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2532
- 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:1412
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2256 -s 1236
  2⤵
  - Program crash
  PID:3448

C:\Windows\SysWOW64\lynoholh\pzerytsh.exe
C:\Windows\SysWOW64\lynoholh\pzerytsh.exe /d"C:\Users\Admin\AppData\Local\Temp\94c44c1feea87dc133e282cc400aa42253437a7507e322bdd4bb9b0f1583c43c.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2892
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4176
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2892 -s 564
  2⤵
  - Program crash
  PID:2876

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2256 -ip 2256
1⤵
PID:3756

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 2892 -ip 2892
1⤵
PID:1956

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\pzerytsh.exe

Filesize
12.5MB

MD5
ada5031e9d83527f89d9d086b16378ee

SHA1
074a1dc484140e7c5f0bebb7ced20d859bb40884

SHA256
797d91f1ead8e43e121beebea5afea0429a2c95a02a9bcaf19362ec62443506c

SHA512
548da38e0f4e68a5ececdfa909bc24d10fd0da33765977329635b686fbb410a2de19c7f8371f86ddcb1e702020be208f751027e92d8919eebcf2c24a6598e1f0

Download Submit
memory/2256-1-0x00000000030D0000-0x00000000031D0000-memory.dmp

Filesize
1024KB

Download
memory/2256-2-0x00000000030B0000-0x00000000030C3000-memory.dmp

Filesize
76KB

Download
memory/2256-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2256-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2256-9-0x00000000030B0000-0x00000000030C3000-memory.dmp

Filesize
76KB

Download
memory/2256-8-0x0000000000400000-0x0000000002F0D000-memory.dmp

Filesize
43.1MB

Download
memory/2892-15-0x0000000000400000-0x0000000002F0D000-memory.dmp

Filesize
43.1MB

Download
memory/4176-11-0x00000000007D0000-0x00000000007E5000-memory.dmp

Filesize
84KB

Download
memory/4176-13-0x00000000007D0000-0x00000000007E5000-memory.dmp

Filesize
84KB

Download
memory/4176-14-0x00000000007D0000-0x00000000007E5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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