tofsee | 56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
22/11/2024, 14:59

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General

Target
56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe
Size 13.9MB
Sample241122-sc86hasqex
SHA256 56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83
MD5 ab0e948d4784415f90d8677e5f4c9d91
SHA1 812b1354f35ed90d60aaa8c562db4380919f12ab
SHA512 a42433ffe7cfcef3c5e3db9981f93dbc1a2a7fd2269764128ac30b3750fc020249ca70a11c975c1f7cc373ab8fb032e96a5b2ae07d55edb95c841df4e740929d
SSDEEP 49152:1zPOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOX:1D
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

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

pid	Process
540	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\drcjpjub\ImagePath = "C:\\Windows\\SysWOW64\\drcjpjub\\jwfcdiuh.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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe

Deletes itself 1 IoCs

pid	Process
1696	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4668	jwfcdiuh.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4668 set thread context of 1696	4668	jwfcdiuh.exe	108

Launches sc.exe 3 IoCs

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

pid	Process
652	sc.exe
2628	sc.exe
396	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

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

pid	pid_target	Process	procid_target
5044	2228	WerFault.exe	82
5080	4668	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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jwfcdiuh.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2228 wrote to memory of 1536	2228	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	83
PID 2228 wrote to memory of 1536	2228	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	83
PID 2228 wrote to memory of 1536	2228	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	83
PID 2228 wrote to memory of 4076	2228	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	87
PID 2228 wrote to memory of 4076	2228	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	87
PID 2228 wrote to memory of 4076	2228	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	87
PID 2228 wrote to memory of 396	2228	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	90
PID 2228 wrote to memory of 396	2228	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	90
PID 2228 wrote to memory of 396	2228	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	90
PID 2228 wrote to memory of 652	2228	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	94
PID 2228 wrote to memory of 652	2228	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	94
PID 2228 wrote to memory of 652	2228	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	94
PID 2228 wrote to memory of 2628	2228	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	99
PID 2228 wrote to memory of 2628	2228	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	99
PID 2228 wrote to memory of 2628	2228	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	99
PID 2228 wrote to memory of 540	2228	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	102
PID 2228 wrote to memory of 540	2228	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	102
PID 2228 wrote to memory of 540	2228	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	102
PID 4668 wrote to memory of 1696	4668	jwfcdiuh.exe	108
PID 4668 wrote to memory of 1696	4668	jwfcdiuh.exe	108
PID 4668 wrote to memory of 1696	4668	jwfcdiuh.exe	108
PID 4668 wrote to memory of 1696	4668	jwfcdiuh.exe	108
PID 4668 wrote to memory of 1696	4668	jwfcdiuh.exe	108

C:\Users\Admin\AppData\Local\Temp\56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe
"C:\Users\Admin\AppData\Local\Temp\56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2228
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\drcjpjub\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1536
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jwfcdiuh.exe" C:\Windows\SysWOW64\drcjpjub\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4076
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create drcjpjub binPath= "C:\Windows\SysWOW64\drcjpjub\jwfcdiuh.exe /d\"C:\Users\Admin\AppData\Local\Temp\56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:396
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description drcjpjub "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:652
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start drcjpjub
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2628
- 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:540
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2228 -s 1244
  2⤵
  - Program crash
  PID:5044

C:\Windows\SysWOW64\drcjpjub\jwfcdiuh.exe
C:\Windows\SysWOW64\drcjpjub\jwfcdiuh.exe /d"C:\Users\Admin\AppData\Local\Temp\56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4668
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1696
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4668 -s 512
  2⤵
  - Program crash
  PID:5080

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 2228 -ip 2228
1⤵
PID:3100

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 4668 -ip 4668
1⤵
PID:3128

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

jwfcdiuh.exe

Path C:\Users\Admin\AppData\Local\Temp\jwfcdiuh.exe
Size 10.2MB
SHA256 7390b51ffbd66dc2a707fdda3d1391002961a1bfa98c74335c82ad719919320c
MD5 4f6750477d6ba44c894e645ac71ebf20
SHA1 457d3b43b536671717e4eb6113693b42f4a4eea8
SHA512 dbd8a73d0f4f95ac6255208b905baa4d063e4b8073dd7939b3e770edbab9bb77efad058082157489a07df0a778866d787ff9dbe9aadefadc67b3818d4cc11d98
SSDEEP 49152:rzPOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOn:r
MD5 SHA1 SHA512 SSDEEP

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memory/1696-11-0x0000000001040000-0x0000000001055000-memory.dmp

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memory/1696-13-0x0000000001040000-0x0000000001055000-memory.dmp

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memory/1696-15-0x0000000001040000-0x0000000001055000-memory.dmp

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memory/2228-1-0x00000000018B0000-0x00000000019B0000-memory.dmp

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memory/2228-2-0x0000000001820000-0x0000000001833000-memory.dmp

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memory/2228-3-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/2228-10-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/2228-8-0x0000000000400000-0x00000000016BC000-memory.dmp

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memory/2228-9-0x0000000001820000-0x0000000001833000-memory.dmp

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memory/4668-14-0x0000000000400000-0x00000000016BC000-memory.dmp

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memory/4668-17-0x0000000000400000-0x00000000016BC000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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