tofsee | 508c827bc2401fa6a6b3ab11c6c151709b719df4f148edebee8aa1483d367f42

General

Target

22fb4c623834ad8a3f602da708000647.exe
Size

10.0MB
MD5

22fb4c623834ad8a3f602da708000647
SHA1

7386485a6086bf06ee7df34f6aa9c19a564749cf
SHA256

508c827bc2401fa6a6b3ab11c6c151709b719df4f148edebee8aa1483d367f42
SHA512

454f20708a71da5c851016c27600f55eb26192199cb312957dc33848fb13a5ec02ce67f9bfc2064785a800e2e0715e7cfa9cab262fd0142c6a0661bd2893b444
SSDEEP

98304:I2UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU0:I

Score

10^/10

tofsee evasion persistence 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
Creates new service(s) 1 TTPs
persistence

Windows Service
T1543.003

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Windows Service

T1543.003

pid	Process
4136	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\cysxlxuq\ImagePath = "C:\\Windows\\SysWOW64\\cysxlxuq\\qlspolhi.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-1-5-21-1815711207-1844170477-3539718864-1000\Control Panel\International\Geo\Nation	22fb4c623834ad8a3f602da708000647.exe

Deletes itself 1 IoCs

pid	Process
3136	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1444	qlspolhi.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1444 set thread context of 3136	1444	qlspolhi.exe	108

Launches sc.exe 3 IoCs

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

pid	Process
1672	sc.exe
4432	sc.exe
4540	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4312	1444	WerFault.exe	104
5072	4780	WerFault.exe	91

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4780 wrote to memory of 2008	4780	22fb4c623834ad8a3f602da708000647.exe	94
PID 4780 wrote to memory of 2008	4780	22fb4c623834ad8a3f602da708000647.exe	94
PID 4780 wrote to memory of 2008	4780	22fb4c623834ad8a3f602da708000647.exe	94
PID 4780 wrote to memory of 1904	4780	22fb4c623834ad8a3f602da708000647.exe	96
PID 4780 wrote to memory of 1904	4780	22fb4c623834ad8a3f602da708000647.exe	96
PID 4780 wrote to memory of 1904	4780	22fb4c623834ad8a3f602da708000647.exe	96
PID 4780 wrote to memory of 4432	4780	22fb4c623834ad8a3f602da708000647.exe	98
PID 4780 wrote to memory of 4432	4780	22fb4c623834ad8a3f602da708000647.exe	98
PID 4780 wrote to memory of 4432	4780	22fb4c623834ad8a3f602da708000647.exe	98
PID 4780 wrote to memory of 4540	4780	22fb4c623834ad8a3f602da708000647.exe	100
PID 4780 wrote to memory of 4540	4780	22fb4c623834ad8a3f602da708000647.exe	100
PID 4780 wrote to memory of 4540	4780	22fb4c623834ad8a3f602da708000647.exe	100
PID 4780 wrote to memory of 1672	4780	22fb4c623834ad8a3f602da708000647.exe	102
PID 4780 wrote to memory of 1672	4780	22fb4c623834ad8a3f602da708000647.exe	102
PID 4780 wrote to memory of 1672	4780	22fb4c623834ad8a3f602da708000647.exe	102
PID 4780 wrote to memory of 4136	4780	22fb4c623834ad8a3f602da708000647.exe	105
PID 4780 wrote to memory of 4136	4780	22fb4c623834ad8a3f602da708000647.exe	105
PID 4780 wrote to memory of 4136	4780	22fb4c623834ad8a3f602da708000647.exe	105
PID 1444 wrote to memory of 3136	1444	qlspolhi.exe	108
PID 1444 wrote to memory of 3136	1444	qlspolhi.exe	108
PID 1444 wrote to memory of 3136	1444	qlspolhi.exe	108
PID 1444 wrote to memory of 3136	1444	qlspolhi.exe	108
PID 1444 wrote to memory of 3136	1444	qlspolhi.exe	108

C:\Users\Admin\AppData\Local\Temp\22fb4c623834ad8a3f602da708000647.exe
"C:\Users\Admin\AppData\Local\Temp\22fb4c623834ad8a3f602da708000647.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4780
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cysxlxuq\
  2⤵
  PID:2008
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\qlspolhi.exe" C:\Windows\SysWOW64\cysxlxuq\
  2⤵
  PID:1904
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create cysxlxuq binPath= "C:\Windows\SysWOW64\cysxlxuq\qlspolhi.exe /d\"C:\Users\Admin\AppData\Local\Temp\22fb4c623834ad8a3f602da708000647.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:4432
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description cysxlxuq "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:4540
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start cysxlxuq
  2⤵
  - Launches sc.exe
  PID:1672
- 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
  PID:4136
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4780 -s 1272
  2⤵
  - Program crash
  PID:5072

C:\Windows\SysWOW64\cysxlxuq\qlspolhi.exe
C:\Windows\SysWOW64\cysxlxuq\qlspolhi.exe /d"C:\Users\Admin\AppData\Local\Temp\22fb4c623834ad8a3f602da708000647.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1444
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:3136
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1444 -s 516
  2⤵
  - Program crash
  PID:4312

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 4780 -ip 4780
1⤵
PID:3232

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1444 -ip 1444
1⤵
PID:2960

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

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

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\qlspolhi.exe

Filesize
2.1MB

MD5
64a72b093983b9375e471b44e23a49c4

SHA1
9cdd9b64f57cfcdd832b58f31a57f307dfe5e168

SHA256
575a6298f091f2175d7ea4449555e78d4720ad9a792a854db4b92d3fd38463ae

SHA512
44d8cf011e3d5875261123677d0d7f89c9d445cd7b239b9f95069a666230a7259c6991b2bc9412ab2a5bb91c62ead3e89941598965dc9a3e1082de4028e86955

Download Submit
C:\Windows\SysWOW64\cysxlxuq\qlspolhi.exe

Filesize
1024KB

MD5
96d7026c93102ba5c9963ea561654ee2

SHA1
9d687da8d3953e1ed00f012c45e89002baaaea1c

SHA256
03bfa847e82617ace7eb3cde60ea985519b06327ea43124ee613fb6a55bde888

SHA512
9012fc1fe10054328fbeae73ce4360775392089bc9ce1f05c5037daaa0cee16ef45ed6c8c5d11a614c50b37c343dfa5fd8dc82d85f3db37745021260ef472bad

Download Submit
memory/1444-9-0x0000000000400000-0x0000000000474000-memory.dmp

Filesize
464KB

Download
memory/1444-8-0x0000000000650000-0x0000000000750000-memory.dmp

Filesize
1024KB

Download
memory/1444-14-0x0000000000400000-0x0000000000474000-memory.dmp

Filesize
464KB

Download
memory/3136-10-0x0000000001000000-0x0000000001015000-memory.dmp

Filesize
84KB

Download
memory/3136-13-0x0000000001000000-0x0000000001015000-memory.dmp

Filesize
84KB

Download
memory/3136-16-0x0000000001000000-0x0000000001015000-memory.dmp

Filesize
84KB

Download
memory/3136-17-0x0000000001000000-0x0000000001015000-memory.dmp

Filesize
84KB

Download
memory/3136-18-0x0000000001000000-0x0000000001015000-memory.dmp

Filesize
84KB

Download
memory/4780-4-0x0000000000400000-0x0000000000474000-memory.dmp

Filesize
464KB

Download
memory/4780-2-0x00000000021C0000-0x00000000021D3000-memory.dmp

Filesize
76KB

Download
memory/4780-1-0x0000000000610000-0x0000000000710000-memory.dmp

Filesize
1024KB

Download
memory/4780-15-0x0000000000400000-0x0000000000474000-memory.dmp

Filesize
464KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads