tofsee | 93a216f5814c73349d7ca18e94fe1534b8b01e7561b09c64a9134bbe65e74995

Analysis

max time kernel
143s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
15/01/2024, 03:46

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General

Target
5c0d9a2aebe93c5b9d80ebfe1d45be6f.exe
Size 10.6MB
Sample240115-ebyrgshfh2
SHA256 93a216f5814c73349d7ca18e94fe1534b8b01e7561b09c64a9134bbe65e74995
MD5 5c0d9a2aebe93c5b9d80ebfe1d45be6f
SHA1 6ba4ff92ae07a725a5f6150710baab95d6f0b9f3
SHA512 9966fa4c4138daa005342395cc2d8073f4237fb57200dd4e7ccc7298edea1c1548e4140aaba0d843da70975ca455dd68dd2e2566ac370112674bf59600cb0cbc
SSDEEP 98304:sjhd88888888888888888888888888888888888888888888888888888888888U:s
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

176.111.174.19
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
2424	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\lbucciga\ImagePath = "C:\\Windows\\SysWOW64\\lbucciga\\satatzih.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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	5c0d9a2aebe93c5b9d80ebfe1d45be6f.exe

Deletes itself 1 IoCs

pid	Process
5084	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1652	satatzih.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1652 set thread context of 5084	1652	satatzih.exe	108

Launches sc.exe 3 IoCs

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

pid	Process
1436	sc.exe
1204	sc.exe
4040	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
676	4364	WerFault.exe	85
2540	1652	WerFault.exe	99

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4364 wrote to memory of 2560	4364	5c0d9a2aebe93c5b9d80ebfe1d45be6f.exe	88
PID 4364 wrote to memory of 2560	4364	5c0d9a2aebe93c5b9d80ebfe1d45be6f.exe	88
PID 4364 wrote to memory of 2560	4364	5c0d9a2aebe93c5b9d80ebfe1d45be6f.exe	88
PID 4364 wrote to memory of 4192	4364	5c0d9a2aebe93c5b9d80ebfe1d45be6f.exe	90
PID 4364 wrote to memory of 4192	4364	5c0d9a2aebe93c5b9d80ebfe1d45be6f.exe	90
PID 4364 wrote to memory of 4192	4364	5c0d9a2aebe93c5b9d80ebfe1d45be6f.exe	90
PID 4364 wrote to memory of 1436	4364	5c0d9a2aebe93c5b9d80ebfe1d45be6f.exe	92
PID 4364 wrote to memory of 1436	4364	5c0d9a2aebe93c5b9d80ebfe1d45be6f.exe	92
PID 4364 wrote to memory of 1436	4364	5c0d9a2aebe93c5b9d80ebfe1d45be6f.exe	92
PID 4364 wrote to memory of 1204	4364	5c0d9a2aebe93c5b9d80ebfe1d45be6f.exe	94
PID 4364 wrote to memory of 1204	4364	5c0d9a2aebe93c5b9d80ebfe1d45be6f.exe	94
PID 4364 wrote to memory of 1204	4364	5c0d9a2aebe93c5b9d80ebfe1d45be6f.exe	94
PID 4364 wrote to memory of 4040	4364	5c0d9a2aebe93c5b9d80ebfe1d45be6f.exe	96
PID 4364 wrote to memory of 4040	4364	5c0d9a2aebe93c5b9d80ebfe1d45be6f.exe	96
PID 4364 wrote to memory of 4040	4364	5c0d9a2aebe93c5b9d80ebfe1d45be6f.exe	96
PID 4364 wrote to memory of 2424	4364	5c0d9a2aebe93c5b9d80ebfe1d45be6f.exe	98
PID 4364 wrote to memory of 2424	4364	5c0d9a2aebe93c5b9d80ebfe1d45be6f.exe	98
PID 4364 wrote to memory of 2424	4364	5c0d9a2aebe93c5b9d80ebfe1d45be6f.exe	98
PID 1652 wrote to memory of 5084	1652	satatzih.exe	108
PID 1652 wrote to memory of 5084	1652	satatzih.exe	108
PID 1652 wrote to memory of 5084	1652	satatzih.exe	108
PID 1652 wrote to memory of 5084	1652	satatzih.exe	108
PID 1652 wrote to memory of 5084	1652	satatzih.exe	108

C:\Users\Admin\AppData\Local\Temp\5c0d9a2aebe93c5b9d80ebfe1d45be6f.exe
"C:\Users\Admin\AppData\Local\Temp\5c0d9a2aebe93c5b9d80ebfe1d45be6f.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4364
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lbucciga\
  2⤵
  PID:2560
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\satatzih.exe" C:\Windows\SysWOW64\lbucciga\
  2⤵
  PID:4192
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create lbucciga binPath= "C:\Windows\SysWOW64\lbucciga\satatzih.exe /d\"C:\Users\Admin\AppData\Local\Temp\5c0d9a2aebe93c5b9d80ebfe1d45be6f.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:1436
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description lbucciga "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:1204
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start lbucciga
  2⤵
  - Launches sc.exe
  PID:4040
- 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:2424
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4364 -s 1296
  2⤵
  - Program crash
  PID:676

C:\Windows\SysWOW64\lbucciga\satatzih.exe
C:\Windows\SysWOW64\lbucciga\satatzih.exe /d"C:\Users\Admin\AppData\Local\Temp\5c0d9a2aebe93c5b9d80ebfe1d45be6f.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1652
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:5084
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1652 -s 512
  2⤵
  - Program crash
  PID:2540

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4364 -ip 4364
1⤵
PID:680

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 1652 -ip 1652
1⤵
PID:560

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

satatzih.exe

Path C:\Users\Admin\AppData\Local\Temp\satatzih.exe
Size 14.0MB
SHA256 fafa78a8c71fe542855ae987d78b32f4d1fff01a410250cddeac74cc2981198a
MD5 67505cc5f9e04e36ac74e7aed89f1919
SHA1 ab747c453fc0917198f74726f877972d9b46dcea
SHA512 3126cd8a7f8bff68449edbd8944e3fb41bede8e5c48881ef47a3a18222f256b4bb5250d95d0369b2488ac8e0bc272359fcf282ca39736985b26411a63eea188c
SSDEEP 98304:2jhd88888888888888888888888888888888888888888888888888888888888b:2
MD5 SHA1 SHA512 SSDEEP

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satatzih.exe

Path C:\Windows\SysWOW64\lbucciga\satatzih.exe
Size 1.1MB
SHA256 15a8226fcea3c170f0d4702538469390b1f5fe4457f87ee974d62288e55744bd
MD5 b7ecda8fe396472e8a334f43b3274a78
SHA1 8ce22b2aae60d131a883a897a60a80e75dc757d5
SHA512 fefb43ce1186a5cbb7df326cfb1b3771f301fa0148b237106159a6bf6a8f89ad352676679267827d96df7b29623017ea996c31990e6b7f278177a7df6d47ce0a
SSDEEP 24576:2Hhjf0aLgaz4i888888888888888888888888888888888888888888888888888:2jhzR88888888888888888888888888s
MD5 SHA1 SHA512 SSDEEP

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memory/1652-17-0x0000000000400000-0x000000000045D000-memory.dmp

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memory/1652-12-0x0000000000400000-0x000000000045D000-memory.dmp

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memory/1652-11-0x00000000006A0000-0x00000000007A0000-memory.dmp

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memory/4364-5-0x0000000000400000-0x000000000045D000-memory.dmp

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memory/4364-8-0x0000000000400000-0x000000000045D000-memory.dmp

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memory/4364-9-0x00000000005C0000-0x00000000005D3000-memory.dmp

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memory/4364-1-0x00000000005F0000-0x00000000006F0000-memory.dmp

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memory/4364-3-0x0000000000400000-0x000000000045D000-memory.dmp

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memory/4364-2-0x00000000005C0000-0x00000000005D3000-memory.dmp

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memory/5084-13-0x0000000000320000-0x0000000000335000-memory.dmp

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memory/5084-16-0x0000000000320000-0x0000000000335000-memory.dmp

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memory/5084-18-0x0000000000320000-0x0000000000335000-memory.dmp

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memory/5084-19-0x0000000000320000-0x0000000000335000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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