tofsee | 9da6780e13ccbab324378c80190ba80228742babb5d81f78fb50628a7ab401db

Analysis

max time kernel
147s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
29/12/2023, 21:38

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General

Target
04a14b2d2b44d5672632e52781f7b3e7.exe
Size 14.9MB
Sample231229-1hesvafbbm
SHA256 9da6780e13ccbab324378c80190ba80228742babb5d81f78fb50628a7ab401db
MD5 04a14b2d2b44d5672632e52781f7b3e7
SHA1 46d32f2623deef16440b814dbe0f65199b7ec482
SHA512 02f32edb1907821613f3facfaf5e4a4c8283c08a984004d5b97ded9fa08ac50ab1fe96d76b852208ae8996d8457eab6d644d39c376722a6b4cf8da62b21ce332
SSDEEP 49152:wj5555555555555555555555555555555555555555555555555555555555555Z:
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

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
4092	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\woyocoqv\ImagePath = "C:\\Windows\\SysWOW64\\woyocoqv\\ziaziuyp.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-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation	04a14b2d2b44d5672632e52781f7b3e7.exe

Deletes itself 1 IoCs

pid	Process
4616	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4784	ziaziuyp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4784 set thread context of 4616	4784	ziaziuyp.exe	87

Launches sc.exe 3 IoCs

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

pid	Process
4208	sc.exe
4920	sc.exe
4032	sc.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2424 wrote to memory of 1000	2424	04a14b2d2b44d5672632e52781f7b3e7.exe	29
PID 2424 wrote to memory of 1000	2424	04a14b2d2b44d5672632e52781f7b3e7.exe	29
PID 2424 wrote to memory of 1000	2424	04a14b2d2b44d5672632e52781f7b3e7.exe	29
PID 2424 wrote to memory of 3608	2424	04a14b2d2b44d5672632e52781f7b3e7.exe	41
PID 2424 wrote to memory of 3608	2424	04a14b2d2b44d5672632e52781f7b3e7.exe	41
PID 2424 wrote to memory of 3608	2424	04a14b2d2b44d5672632e52781f7b3e7.exe	41
PID 2424 wrote to memory of 4208	2424	04a14b2d2b44d5672632e52781f7b3e7.exe	53
PID 2424 wrote to memory of 4208	2424	04a14b2d2b44d5672632e52781f7b3e7.exe	53
PID 2424 wrote to memory of 4208	2424	04a14b2d2b44d5672632e52781f7b3e7.exe	53
PID 2424 wrote to memory of 4920	2424	04a14b2d2b44d5672632e52781f7b3e7.exe	64
PID 2424 wrote to memory of 4920	2424	04a14b2d2b44d5672632e52781f7b3e7.exe	64
PID 2424 wrote to memory of 4920	2424	04a14b2d2b44d5672632e52781f7b3e7.exe	64
PID 2424 wrote to memory of 4032	2424	04a14b2d2b44d5672632e52781f7b3e7.exe	76
PID 2424 wrote to memory of 4032	2424	04a14b2d2b44d5672632e52781f7b3e7.exe	76
PID 2424 wrote to memory of 4032	2424	04a14b2d2b44d5672632e52781f7b3e7.exe	76
PID 4784 wrote to memory of 4616	4784	ziaziuyp.exe	87
PID 4784 wrote to memory of 4616	4784	ziaziuyp.exe	87
PID 4784 wrote to memory of 4616	4784	ziaziuyp.exe	87
PID 4784 wrote to memory of 4616	4784	ziaziuyp.exe	87
PID 4784 wrote to memory of 4616	4784	ziaziuyp.exe	87
PID 2424 wrote to memory of 4092	2424	04a14b2d2b44d5672632e52781f7b3e7.exe	86
PID 2424 wrote to memory of 4092	2424	04a14b2d2b44d5672632e52781f7b3e7.exe	86
PID 2424 wrote to memory of 4092	2424	04a14b2d2b44d5672632e52781f7b3e7.exe	86

C:\Users\Admin\AppData\Local\Temp\04a14b2d2b44d5672632e52781f7b3e7.exe
"C:\Users\Admin\AppData\Local\Temp\04a14b2d2b44d5672632e52781f7b3e7.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2424
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\woyocoqv\
  2⤵
  PID:1000
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ziaziuyp.exe" C:\Windows\SysWOW64\woyocoqv\
  2⤵
  PID:3608
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create woyocoqv binPath= "C:\Windows\SysWOW64\woyocoqv\ziaziuyp.exe /d\"C:\Users\Admin\AppData\Local\Temp\04a14b2d2b44d5672632e52781f7b3e7.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:4208
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description woyocoqv "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:4920
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start woyocoqv
  2⤵
  - Launches sc.exe
  PID:4032
- 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:4092

C:\Windows\SysWOW64\woyocoqv\ziaziuyp.exe
C:\Windows\SysWOW64\woyocoqv\ziaziuyp.exe /d"C:\Users\Admin\AppData\Local\Temp\04a14b2d2b44d5672632e52781f7b3e7.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4784
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:4616

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

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

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

ziaziuyp.exe

Path C:\Windows\SysWOW64\woyocoqv\ziaziuyp.exe
Size 2.0MB
SHA256 8704da85ac5dfd609266c9e34b26ea9062bb0a8186006859b996549b5ac70bce
MD5 0d4b95e1fec3aaec427b56b1d5c2ecd2
SHA1 f1e2696f1e029790711e9e6d4071fa2712bbb322
SHA512 ed1e5b3a5b6a02c6ef8f522e4e1feca244b2d44f24683a87c7d2b2563120d8265ae92ffdb78ebe0a139a2d3eb679b25301197f078973fcde349d618de1a90340
SSDEEP 49152:wj5555555555555555555555555555555555555555555555555555555555555V:
MD5 SHA1 SHA512 SSDEEP

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memory/2424-15-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/2424-3-0x00000000006E0000-0x00000000006E1000-memory.dmp

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memory/2424-2-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/2424-1-0x00000000006D0000-0x00000000006D1000-memory.dmp

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memory/2424-0-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/4616-14-0x00000000008D0000-0x00000000008E5000-memory.dmp

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memory/4616-10-0x00000000008D0000-0x00000000008E5000-memory.dmp

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memory/4616-17-0x00000000008D0000-0x00000000008E5000-memory.dmp

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memory/4616-16-0x00000000008D0000-0x00000000008E5000-memory.dmp

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memory/4616-18-0x00000000008D0000-0x00000000008E5000-memory.dmp

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memory/4784-13-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/4784-7-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/4784-9-0x0000000000CE0000-0x0000000000CE1000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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