tofsee | 0479dd4c50da096ebc1143c05d2f1880ffa2138686430736f078c59c46252e0d

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
01/09/2024, 03:44

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General

Target
3ef291e4dc9f5a6e42ae653acae1e014e90bf658c4160f6e8de7f2e4b0538460.exe
Size 10.5MB
Sample240901-eawwha1apk
SHA256 3ef291e4dc9f5a6e42ae653acae1e014e90bf658c4160f6e8de7f2e4b0538460
MD5 026f086162e7d6d864ca4dc744149bc0
SHA1 cc81af6e0d8bd8c89126f509ccb5714cce8a3ef0
SHA512 ff7ba4526233eb5a7e6dfa4673bfe0dc9b354a9960c23822267cab62c1571139e93c3919d8bf38bd1afd58b147ea15a2fdc1ad6b92f2e0fd2e65b14847cdebf4
SSDEEP 49152:DkHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHn:
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

quadoil.ru
lakeflex.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan 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
4872	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\irndddmg\ImagePath = "C:\\Windows\\SysWOW64\\irndddmg\\msnqziid.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-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	3ef291e4dc9f5a6e42ae653acae1e014e90bf658c4160f6e8de7f2e4b0538460.exe

Deletes itself 1 IoCs

pid	Process
2848	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2312	msnqziid.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2312 set thread context of 2848	2312	msnqziid.exe	107

Launches sc.exe 3 IoCs

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

pid	Process
2540	sc.exe
4648	sc.exe
1544	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
4656	3008	WerFault.exe	83
2904	2312	WerFault.exe	101

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	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	msnqziid.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3ef291e4dc9f5a6e42ae653acae1e014e90bf658c4160f6e8de7f2e4b0538460.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3008 wrote to memory of 64	3008	3ef291e4dc9f5a6e42ae653acae1e014e90bf658c4160f6e8de7f2e4b0538460.exe	89
PID 3008 wrote to memory of 64	3008	3ef291e4dc9f5a6e42ae653acae1e014e90bf658c4160f6e8de7f2e4b0538460.exe	89
PID 3008 wrote to memory of 64	3008	3ef291e4dc9f5a6e42ae653acae1e014e90bf658c4160f6e8de7f2e4b0538460.exe	89
PID 3008 wrote to memory of 1588	3008	3ef291e4dc9f5a6e42ae653acae1e014e90bf658c4160f6e8de7f2e4b0538460.exe	91
PID 3008 wrote to memory of 1588	3008	3ef291e4dc9f5a6e42ae653acae1e014e90bf658c4160f6e8de7f2e4b0538460.exe	91
PID 3008 wrote to memory of 1588	3008	3ef291e4dc9f5a6e42ae653acae1e014e90bf658c4160f6e8de7f2e4b0538460.exe	91
PID 3008 wrote to memory of 4648	3008	3ef291e4dc9f5a6e42ae653acae1e014e90bf658c4160f6e8de7f2e4b0538460.exe	95
PID 3008 wrote to memory of 4648	3008	3ef291e4dc9f5a6e42ae653acae1e014e90bf658c4160f6e8de7f2e4b0538460.exe	95
PID 3008 wrote to memory of 4648	3008	3ef291e4dc9f5a6e42ae653acae1e014e90bf658c4160f6e8de7f2e4b0538460.exe	95
PID 3008 wrote to memory of 1544	3008	3ef291e4dc9f5a6e42ae653acae1e014e90bf658c4160f6e8de7f2e4b0538460.exe	97
PID 3008 wrote to memory of 1544	3008	3ef291e4dc9f5a6e42ae653acae1e014e90bf658c4160f6e8de7f2e4b0538460.exe	97
PID 3008 wrote to memory of 1544	3008	3ef291e4dc9f5a6e42ae653acae1e014e90bf658c4160f6e8de7f2e4b0538460.exe	97
PID 3008 wrote to memory of 2540	3008	3ef291e4dc9f5a6e42ae653acae1e014e90bf658c4160f6e8de7f2e4b0538460.exe	99
PID 3008 wrote to memory of 2540	3008	3ef291e4dc9f5a6e42ae653acae1e014e90bf658c4160f6e8de7f2e4b0538460.exe	99
PID 3008 wrote to memory of 2540	3008	3ef291e4dc9f5a6e42ae653acae1e014e90bf658c4160f6e8de7f2e4b0538460.exe	99
PID 3008 wrote to memory of 4872	3008	3ef291e4dc9f5a6e42ae653acae1e014e90bf658c4160f6e8de7f2e4b0538460.exe	102
PID 3008 wrote to memory of 4872	3008	3ef291e4dc9f5a6e42ae653acae1e014e90bf658c4160f6e8de7f2e4b0538460.exe	102
PID 3008 wrote to memory of 4872	3008	3ef291e4dc9f5a6e42ae653acae1e014e90bf658c4160f6e8de7f2e4b0538460.exe	102
PID 2312 wrote to memory of 2848	2312	msnqziid.exe	107
PID 2312 wrote to memory of 2848	2312	msnqziid.exe	107
PID 2312 wrote to memory of 2848	2312	msnqziid.exe	107
PID 2312 wrote to memory of 2848	2312	msnqziid.exe	107
PID 2312 wrote to memory of 2848	2312	msnqziid.exe	107

C:\Users\Admin\AppData\Local\Temp\3ef291e4dc9f5a6e42ae653acae1e014e90bf658c4160f6e8de7f2e4b0538460.exe
"C:\Users\Admin\AppData\Local\Temp\3ef291e4dc9f5a6e42ae653acae1e014e90bf658c4160f6e8de7f2e4b0538460.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3008
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\irndddmg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:64
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\msnqziid.exe" C:\Windows\SysWOW64\irndddmg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1588
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create irndddmg binPath= "C:\Windows\SysWOW64\irndddmg\msnqziid.exe /d\"C:\Users\Admin\AppData\Local\Temp\3ef291e4dc9f5a6e42ae653acae1e014e90bf658c4160f6e8de7f2e4b0538460.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4648
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description irndddmg "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1544
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start irndddmg
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2540
- 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:4872
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3008 -s 1040
  2⤵
  - Program crash
  PID:4656

C:\Windows\SysWOW64\irndddmg\msnqziid.exe
C:\Windows\SysWOW64\irndddmg\msnqziid.exe /d"C:\Users\Admin\AppData\Local\Temp\3ef291e4dc9f5a6e42ae653acae1e014e90bf658c4160f6e8de7f2e4b0538460.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2312
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2848
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2312 -s 524
  2⤵
  - Program crash
  PID:2904

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3008 -ip 3008
1⤵
PID:3296

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2312 -ip 2312
1⤵
PID:3680

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

Query Registry

T1012

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

msnqziid.exe

Path C:\Users\Admin\AppData\Local\Temp\msnqziid.exe
Size 14.9MB
SHA256 ab36fce7f0edb63b7d13f0521da1ef199e5279653c402ccbcaea5c91145e7db8
MD5 cecdcd91d05b749a282783624a928846
SHA1 a29aa38c67d167ddda8565b00832d3a5154bebad
SHA512 3156ab813d4e406b47d7fa91357ed1920f9ce0b7126505bcb4532817e56fcece8110d45079fc9f067621e472d3774c220a1e1cb9b91fc9b004cf2ef467ee02af
SSDEEP 49152:5kHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHn:
MD5 SHA1 SHA512 SSDEEP

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memory/2312-16-0x0000000000400000-0x0000000000785000-memory.dmp

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memory/2312-12-0x0000000000400000-0x0000000000785000-memory.dmp

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memory/2848-14-0x0000000000640000-0x0000000000655000-memory.dmp

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memory/2848-15-0x0000000000640000-0x0000000000655000-memory.dmp

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memory/2848-11-0x0000000000640000-0x0000000000655000-memory.dmp

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memory/3008-2-0x00000000024E0000-0x00000000024F3000-memory.dmp

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memory/3008-1-0x0000000000900000-0x0000000000A00000-memory.dmp

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memory/3008-4-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/3008-10-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/3008-9-0x00000000024E0000-0x00000000024F3000-memory.dmp

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memory/3008-8-0x0000000000400000-0x0000000000785000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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