tofsee | 0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90

General

Target

0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe
Size

13.0MB
MD5

38a85adfdcbda17fe01e01c8cf39289d
SHA1

eb8f22a914d9f6a8b7b7cca8394db6a261675c8c
SHA256

0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90
SHA512

ecf37aa2f234b9a795e3e0ef04e4713eacdcc50d3b56a0c6c3a495cf23e848ea84acd5313094c639ff4a310cf5c67b8a2e271dfe7a5e1a1eecf6e0c813ea1acd
SSDEEP

49152:hOFK1llllllllllllllllllllllllllllllllllllllllllllllllllllllllllq:9g

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

2964 netsh.exe

pid	process
2964	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\acvbwhiq\ImagePath = "C:\\Windows\\SysWOW64\\acvbwhiq\\ydcaqwfu.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:

0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

3128 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

ydcaqwfu.exe

pid process

2448 ydcaqwfu.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

ydcaqwfu.exe

description pid process target process

PID 2448 set thread context of 3128 2448 ydcaqwfu.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

3412 sc.exe
4544 sc.exe
1872 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3128	svchost.exe

pid	process
2448	ydcaqwfu.exe

description	pid	process	target process
PID 2448 set thread context of 3128	2448	ydcaqwfu.exe	svchost.exe

pid	process
3412	sc.exe
4544	sc.exe
1872	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
116	1420	WerFault.exe	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe
1068	2448	WerFault.exe	ydcaqwfu.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:

netsh.exeydcaqwfu.exesvchost.execmd.exesc.exesc.exesc.exe0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.execmd.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ydcaqwfu.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	sc.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	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exeydcaqwfu.exe

description	pid	process	target process
PID 1420 wrote to memory of 760	1420	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	cmd.exe
PID 1420 wrote to memory of 760	1420	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	cmd.exe
PID 1420 wrote to memory of 760	1420	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	cmd.exe
PID 1420 wrote to memory of 3740	1420	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	cmd.exe
PID 1420 wrote to memory of 3740	1420	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	cmd.exe
PID 1420 wrote to memory of 3740	1420	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	cmd.exe
PID 1420 wrote to memory of 4544	1420	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	sc.exe
PID 1420 wrote to memory of 4544	1420	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	sc.exe
PID 1420 wrote to memory of 4544	1420	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	sc.exe
PID 1420 wrote to memory of 1872	1420	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	sc.exe
PID 1420 wrote to memory of 1872	1420	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	sc.exe
PID 1420 wrote to memory of 1872	1420	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	sc.exe
PID 1420 wrote to memory of 3412	1420	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	sc.exe
PID 1420 wrote to memory of 3412	1420	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	sc.exe
PID 1420 wrote to memory of 3412	1420	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	sc.exe
PID 1420 wrote to memory of 2964	1420	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	netsh.exe
PID 1420 wrote to memory of 2964	1420	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	netsh.exe
PID 1420 wrote to memory of 2964	1420	0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe	netsh.exe
PID 2448 wrote to memory of 3128	2448	ydcaqwfu.exe	svchost.exe
PID 2448 wrote to memory of 3128	2448	ydcaqwfu.exe	svchost.exe
PID 2448 wrote to memory of 3128	2448	ydcaqwfu.exe	svchost.exe
PID 2448 wrote to memory of 3128	2448	ydcaqwfu.exe	svchost.exe
PID 2448 wrote to memory of 3128	2448	ydcaqwfu.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe
"C:\Users\Admin\AppData\Local\Temp\0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1420
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\acvbwhiq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:760
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ydcaqwfu.exe" C:\Windows\SysWOW64\acvbwhiq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3740
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create acvbwhiq binPath= "C:\Windows\SysWOW64\acvbwhiq\ydcaqwfu.exe /d\"C:\Users\Admin\AppData\Local\Temp\0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4544
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description acvbwhiq "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1872
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start acvbwhiq
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3412
- 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:2964
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1420 -s 1040
  2⤵
  - Program crash
  PID:116

C:\Windows\SysWOW64\acvbwhiq\ydcaqwfu.exe
C:\Windows\SysWOW64\acvbwhiq\ydcaqwfu.exe /d"C:\Users\Admin\AppData\Local\Temp\0a131a082b4fb56695e1a0d6532254286baaacec7a880f6d8ce8c6834072ea90.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2448
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3128
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2448 -s 524
  2⤵
  - Program crash
  PID:1068

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1420 -ip 1420
1⤵
PID:2244

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 2448 -ip 2448
1⤵
PID:2360

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\ydcaqwfu.exe

Filesize
12.3MB

MD5
19acca3cf84c5d182fbb911ab43ab69d

SHA1
4ad4bd7dda328be02b48dfb5ec482602ebe6ff97

SHA256
7b3352035d662a0d5b89e20f658abedfdaf1334914be0e0f3fe0abf1e1738c3b

SHA512
47b4025fa751c0656fdd0d010a83c6ac85ba681f047edfbc4b7a94900f79c7403dc849a4a05b3488dc7e6d9c6f6c4de9efdfdc839168f8f8b66ad088feccff66

Download Submit
memory/1420-2-0x0000000001850000-0x0000000001863000-memory.dmp

Filesize
76KB

Download
memory/1420-1-0x0000000001900000-0x0000000001A00000-memory.dmp

Filesize
1024KB

Download
memory/1420-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1420-9-0x0000000001850000-0x0000000001863000-memory.dmp

Filesize
76KB

Download
memory/1420-8-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/1420-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2448-14-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/2448-17-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/3128-13-0x0000000000AC0000-0x0000000000AD5000-memory.dmp

Filesize
84KB

Download
memory/3128-11-0x0000000000AC0000-0x0000000000AD5000-memory.dmp

Filesize
84KB

Download
memory/3128-15-0x0000000000AC0000-0x0000000000AD5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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