tofsee | 6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6

General

Target

6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe
Size

13.4MB
MD5

a43bf1a91d2d7d2c0350593078a95fe5
SHA1

685f6b436510395fee228855f2b3842266e0710c
SHA256

6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6
SHA512

43ae85a0230abc37a7909d512e93cfcf09c19602c9bc1064bec988cf08ee8f8b159a47daff55af3804cd335356a1c43a04e951875029a936215cfb95adb0cf9b
SSDEEP

1536:h0wSS5v4kCdJwumQA1tdc+2ogPM90svCW3jpNUB5X2CEjrpf9IwqdNdBgotfYn58:hSSePdJwhhy690sKqpyB8xpGwUptf6e

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.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
1984	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\gldpayyd\ImagePath = "C:\\Windows\\SysWOW64\\gldpayyd\\vdswjhqq.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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe

Deletes itself 1 IoCs

pid	Process
1188	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
964	vdswjhqq.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 964 set thread context of 1188	964	vdswjhqq.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
4768	sc.exe
2128	sc.exe
4816	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
2316	4056	WerFault.exe	82
720	964	WerFault.exe	93

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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vdswjhqq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4056 wrote to memory of 2688	4056	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	83
PID 4056 wrote to memory of 2688	4056	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	83
PID 4056 wrote to memory of 2688	4056	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	83
PID 4056 wrote to memory of 816	4056	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	85
PID 4056 wrote to memory of 816	4056	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	85
PID 4056 wrote to memory of 816	4056	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	85
PID 4056 wrote to memory of 2128	4056	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	87
PID 4056 wrote to memory of 2128	4056	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	87
PID 4056 wrote to memory of 2128	4056	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	87
PID 4056 wrote to memory of 4816	4056	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	89
PID 4056 wrote to memory of 4816	4056	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	89
PID 4056 wrote to memory of 4816	4056	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	89
PID 4056 wrote to memory of 4768	4056	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	91
PID 4056 wrote to memory of 4768	4056	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	91
PID 4056 wrote to memory of 4768	4056	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	91
PID 4056 wrote to memory of 1984	4056	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	94
PID 4056 wrote to memory of 1984	4056	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	94
PID 4056 wrote to memory of 1984	4056	6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe	94
PID 964 wrote to memory of 1188	964	vdswjhqq.exe	100
PID 964 wrote to memory of 1188	964	vdswjhqq.exe	100
PID 964 wrote to memory of 1188	964	vdswjhqq.exe	100
PID 964 wrote to memory of 1188	964	vdswjhqq.exe	100
PID 964 wrote to memory of 1188	964	vdswjhqq.exe	100

C:\Users\Admin\AppData\Local\Temp\6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe
"C:\Users\Admin\AppData\Local\Temp\6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4056
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gldpayyd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2688
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vdswjhqq.exe" C:\Windows\SysWOW64\gldpayyd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:816
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create gldpayyd binPath= "C:\Windows\SysWOW64\gldpayyd\vdswjhqq.exe /d\"C:\Users\Admin\AppData\Local\Temp\6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2128
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description gldpayyd "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4816
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start gldpayyd
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4768
- 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:1984
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4056 -s 1272
  2⤵
  - Program crash
  PID:2316

C:\Windows\SysWOW64\gldpayyd\vdswjhqq.exe
C:\Windows\SysWOW64\gldpayyd\vdswjhqq.exe /d"C:\Users\Admin\AppData\Local\Temp\6c7f3c761c1b5ad6e8dcc0bc1253cfb87aef214260b5244b4f86e7ed682951a6.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:964
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1188
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 964 -s 536
  2⤵
  - Program crash
  PID:720

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4056 -ip 4056
1⤵
PID:1352

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 964 -ip 964
1⤵
PID:2348

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\vdswjhqq.exe

Filesize
10.6MB

MD5
b6cd7216f5f99ccbf50d37374708f123

SHA1
a6b78c3465e4f16731cac521b16dd52fd66fb191

SHA256
6fd50c4bea7ebb60645314c8a493e78b9b0c8438a6c9e93901c77cb922ef686a

SHA512
60fcd4382a639ff9550472a4c8c3642782e32212988095d6006981c5e10cd243e85017aa651a889ab9db098e8c4b3b649375ea367696cbdab2875c2d5cfd8183

Download Submit
memory/964-11-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/964-18-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/964-12-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1188-13-0x00000000006C0000-0x00000000006D5000-memory.dmp

Filesize
84KB

Download
memory/1188-15-0x00000000006C0000-0x00000000006D5000-memory.dmp

Filesize
84KB

Download
memory/1188-16-0x00000000006C0000-0x00000000006D5000-memory.dmp

Filesize
84KB

Download
memory/4056-8-0x0000000000680000-0x0000000000693000-memory.dmp

Filesize
76KB

Download
memory/4056-7-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/4056-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4056-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4056-1-0x0000000000740000-0x0000000000840000-memory.dmp

Filesize
1024KB

Download
memory/4056-2-0x0000000000680000-0x0000000000693000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads