tofsee | 77321567006d0c5b5151682598cea932311e475cd6d015bdec055fcc59cf99db

Analysis

max time kernel
44s
max time network
54s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
30-12-2024 19:50

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General

Target

77321567006d0c5b5151682598cea932311e475cd6d015bdec055fcc59cf99db.exe
Size

12.6MB
MD5

dd179af0f87ef059908150114b34696c
SHA1

b5f2f36cda105ff9f2869142ed016f8cfda43fdf
SHA256

77321567006d0c5b5151682598cea932311e475cd6d015bdec055fcc59cf99db
SHA512

4b4561eb56307074705de068d2034ea68ae2d145efbcab7bcd3f0da77a29c50905bf52a5378529a2299b0da1ae90961f2a475cdcbe6d2219d9ab6c5ea1ce3642
SSDEEP

3072:EEtETlIcJpeAXch6LLTjjdQ4TdcUaOE9HBMwu6Z6O3Q7mKte711111111111111n:FEPX86zdndcfrHBgXfmKte

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

vanaheim.cn

jotunheim.name

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
2912	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\aofzaoqq\ImagePath = "C:\\Windows\\SysWOW64\\aofzaoqq\\odvchfkc.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
524	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2824	odvchfkc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2824 set thread context of 524	2824	odvchfkc.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2556	sc.exe
988	sc.exe
2744	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

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	77321567006d0c5b5151682598cea932311e475cd6d015bdec055fcc59cf99db.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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	odvchfkc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1244 wrote to memory of 2528	1244	77321567006d0c5b5151682598cea932311e475cd6d015bdec055fcc59cf99db.exe	30
PID 1244 wrote to memory of 2528	1244	77321567006d0c5b5151682598cea932311e475cd6d015bdec055fcc59cf99db.exe	30
PID 1244 wrote to memory of 2528	1244	77321567006d0c5b5151682598cea932311e475cd6d015bdec055fcc59cf99db.exe	30
PID 1244 wrote to memory of 2528	1244	77321567006d0c5b5151682598cea932311e475cd6d015bdec055fcc59cf99db.exe	30
PID 1244 wrote to memory of 2836	1244	77321567006d0c5b5151682598cea932311e475cd6d015bdec055fcc59cf99db.exe	32
PID 1244 wrote to memory of 2836	1244	77321567006d0c5b5151682598cea932311e475cd6d015bdec055fcc59cf99db.exe	32
PID 1244 wrote to memory of 2836	1244	77321567006d0c5b5151682598cea932311e475cd6d015bdec055fcc59cf99db.exe	32
PID 1244 wrote to memory of 2836	1244	77321567006d0c5b5151682598cea932311e475cd6d015bdec055fcc59cf99db.exe	32
PID 1244 wrote to memory of 2556	1244	77321567006d0c5b5151682598cea932311e475cd6d015bdec055fcc59cf99db.exe	34
PID 1244 wrote to memory of 2556	1244	77321567006d0c5b5151682598cea932311e475cd6d015bdec055fcc59cf99db.exe	34
PID 1244 wrote to memory of 2556	1244	77321567006d0c5b5151682598cea932311e475cd6d015bdec055fcc59cf99db.exe	34
PID 1244 wrote to memory of 2556	1244	77321567006d0c5b5151682598cea932311e475cd6d015bdec055fcc59cf99db.exe	34
PID 1244 wrote to memory of 988	1244	77321567006d0c5b5151682598cea932311e475cd6d015bdec055fcc59cf99db.exe	36
PID 1244 wrote to memory of 988	1244	77321567006d0c5b5151682598cea932311e475cd6d015bdec055fcc59cf99db.exe	36
PID 1244 wrote to memory of 988	1244	77321567006d0c5b5151682598cea932311e475cd6d015bdec055fcc59cf99db.exe	36
PID 1244 wrote to memory of 988	1244	77321567006d0c5b5151682598cea932311e475cd6d015bdec055fcc59cf99db.exe	36
PID 1244 wrote to memory of 2744	1244	77321567006d0c5b5151682598cea932311e475cd6d015bdec055fcc59cf99db.exe	38
PID 1244 wrote to memory of 2744	1244	77321567006d0c5b5151682598cea932311e475cd6d015bdec055fcc59cf99db.exe	38
PID 1244 wrote to memory of 2744	1244	77321567006d0c5b5151682598cea932311e475cd6d015bdec055fcc59cf99db.exe	38
PID 1244 wrote to memory of 2744	1244	77321567006d0c5b5151682598cea932311e475cd6d015bdec055fcc59cf99db.exe	38
PID 1244 wrote to memory of 2912	1244	77321567006d0c5b5151682598cea932311e475cd6d015bdec055fcc59cf99db.exe	41
PID 1244 wrote to memory of 2912	1244	77321567006d0c5b5151682598cea932311e475cd6d015bdec055fcc59cf99db.exe	41
PID 1244 wrote to memory of 2912	1244	77321567006d0c5b5151682598cea932311e475cd6d015bdec055fcc59cf99db.exe	41
PID 1244 wrote to memory of 2912	1244	77321567006d0c5b5151682598cea932311e475cd6d015bdec055fcc59cf99db.exe	41
PID 2824 wrote to memory of 524	2824	odvchfkc.exe	43
PID 2824 wrote to memory of 524	2824	odvchfkc.exe	43
PID 2824 wrote to memory of 524	2824	odvchfkc.exe	43
PID 2824 wrote to memory of 524	2824	odvchfkc.exe	43
PID 2824 wrote to memory of 524	2824	odvchfkc.exe	43
PID 2824 wrote to memory of 524	2824	odvchfkc.exe	43

C:\Users\Admin\AppData\Local\Temp\77321567006d0c5b5151682598cea932311e475cd6d015bdec055fcc59cf99db.exe
"C:\Users\Admin\AppData\Local\Temp\77321567006d0c5b5151682598cea932311e475cd6d015bdec055fcc59cf99db.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1244
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\aofzaoqq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2528
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\odvchfkc.exe" C:\Windows\SysWOW64\aofzaoqq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2836
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create aofzaoqq binPath= "C:\Windows\SysWOW64\aofzaoqq\odvchfkc.exe /d\"C:\Users\Admin\AppData\Local\Temp\77321567006d0c5b5151682598cea932311e475cd6d015bdec055fcc59cf99db.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2556
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description aofzaoqq "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:988
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start aofzaoqq
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2744
- 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:2912

C:\Windows\SysWOW64\aofzaoqq\odvchfkc.exe
C:\Windows\SysWOW64\aofzaoqq\odvchfkc.exe /d"C:\Users\Admin\AppData\Local\Temp\77321567006d0c5b5151682598cea932311e475cd6d015bdec055fcc59cf99db.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2824
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:524

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

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

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
10.0MB

MD5
3f7821249726d73469f3227b1c48289d

SHA1
f6e792900f15acdbd7f05ead167d220ea7467077

SHA256
102384168fa0a7dba9e8e96a1a11aefb19c72ddb46fa7b2be9578e9d0b8ed451

SHA512
c16cd9ba0707ef0e11359456a74f8a38b410ce515d8ec2840d1328942421a22865a71e49aee20133f9b18a6ebbe8a9e5bdf72bb76d8cad03e3cfbf35238fd398

Download Submit
memory/524-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/524-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/524-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/524-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/524-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1244-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1244-2-0x00000000002A0000-0x00000000002B3000-memory.dmp

Filesize
76KB

Download
memory/1244-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1244-8-0x00000000002A0000-0x00000000002B3000-memory.dmp

Filesize
76KB

Download
memory/1244-7-0x0000000000400000-0x0000000002B4A000-memory.dmp

Filesize
39.3MB

Download
memory/1244-1-0x0000000002BC0000-0x0000000002CC0000-memory.dmp

Filesize
1024KB

Download
memory/2824-16-0x0000000000400000-0x0000000002B4A000-memory.dmp

Filesize
39.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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