tofsee | 55eb0162f40757a5f2183e8bea7f3914f28830bcc01e41ccb87709fc5c82e599

General

Target

2024-06-26_63d4972da8508414258d10652266b321_mafia.exe
Size

14.3MB
MD5

63d4972da8508414258d10652266b321
SHA1

f21948cf071c65e274ccda5d7f5f24692f094f22
SHA256

55eb0162f40757a5f2183e8bea7f3914f28830bcc01e41ccb87709fc5c82e599
SHA512

7167f8e04a409a8f913cd9a4f896154a31d152fd53f998af56b3fd9bb7771a2afef0189a4c702f99b1ecf47f8d34ea2de99a1b5dc14b84df946d0b8f73c0784d
SSDEEP

6144:P+rWO2zeSPDjMXMH7Ll4aFpWVqIwUAP97GEwHrG2+e1x2:P+r1IeSXMXc7LlxWV4Ug97GZ+ej

Score

10^/10

tofsee evasion execution persistence privilege_escalation 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) 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

Processes:

netsh.exe

pid process

4844 netsh.exe

pid	process
4844	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\vtjoeqwr\ImagePath = "C:\\Windows\\SysWOW64\\vtjoeqwr\\zyokrns.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

Processes:

2024-06-26_63d4972da8508414258d10652266b321_mafia.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	2024-06-26_63d4972da8508414258d10652266b321_mafia.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

3556 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

zyokrns.exe

pid process

2756 zyokrns.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

zyokrns.exe

description pid process target process

PID 2756 set thread context of 3556 2756 zyokrns.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

2876 sc.exe
4916 sc.exe
3628 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3556	svchost.exe

pid	process
2756	zyokrns.exe

description	pid	process	target process
PID 2756 set thread context of 3556	2756	zyokrns.exe	svchost.exe

pid	process
2876	sc.exe
4916	sc.exe
3628	sc.exe

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

Processes:

netsh.exe

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

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

2024-06-26_63d4972da8508414258d10652266b321_mafia.exezyokrns.exe

description	pid	process	target process
PID 2024 wrote to memory of 2284	2024	2024-06-26_63d4972da8508414258d10652266b321_mafia.exe	cmd.exe
PID 2024 wrote to memory of 2284	2024	2024-06-26_63d4972da8508414258d10652266b321_mafia.exe	cmd.exe
PID 2024 wrote to memory of 2284	2024	2024-06-26_63d4972da8508414258d10652266b321_mafia.exe	cmd.exe
PID 2024 wrote to memory of 464	2024	2024-06-26_63d4972da8508414258d10652266b321_mafia.exe	cmd.exe
PID 2024 wrote to memory of 464	2024	2024-06-26_63d4972da8508414258d10652266b321_mafia.exe	cmd.exe
PID 2024 wrote to memory of 464	2024	2024-06-26_63d4972da8508414258d10652266b321_mafia.exe	cmd.exe
PID 2024 wrote to memory of 2876	2024	2024-06-26_63d4972da8508414258d10652266b321_mafia.exe	sc.exe
PID 2024 wrote to memory of 2876	2024	2024-06-26_63d4972da8508414258d10652266b321_mafia.exe	sc.exe
PID 2024 wrote to memory of 2876	2024	2024-06-26_63d4972da8508414258d10652266b321_mafia.exe	sc.exe
PID 2024 wrote to memory of 4916	2024	2024-06-26_63d4972da8508414258d10652266b321_mafia.exe	sc.exe
PID 2024 wrote to memory of 4916	2024	2024-06-26_63d4972da8508414258d10652266b321_mafia.exe	sc.exe
PID 2024 wrote to memory of 4916	2024	2024-06-26_63d4972da8508414258d10652266b321_mafia.exe	sc.exe
PID 2024 wrote to memory of 3628	2024	2024-06-26_63d4972da8508414258d10652266b321_mafia.exe	sc.exe
PID 2024 wrote to memory of 3628	2024	2024-06-26_63d4972da8508414258d10652266b321_mafia.exe	sc.exe
PID 2024 wrote to memory of 3628	2024	2024-06-26_63d4972da8508414258d10652266b321_mafia.exe	sc.exe
PID 2024 wrote to memory of 4844	2024	2024-06-26_63d4972da8508414258d10652266b321_mafia.exe	netsh.exe
PID 2024 wrote to memory of 4844	2024	2024-06-26_63d4972da8508414258d10652266b321_mafia.exe	netsh.exe
PID 2024 wrote to memory of 4844	2024	2024-06-26_63d4972da8508414258d10652266b321_mafia.exe	netsh.exe
PID 2756 wrote to memory of 3556	2756	zyokrns.exe	svchost.exe
PID 2756 wrote to memory of 3556	2756	zyokrns.exe	svchost.exe
PID 2756 wrote to memory of 3556	2756	zyokrns.exe	svchost.exe
PID 2756 wrote to memory of 3556	2756	zyokrns.exe	svchost.exe
PID 2756 wrote to memory of 3556	2756	zyokrns.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\2024-06-26_63d4972da8508414258d10652266b321_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-26_63d4972da8508414258d10652266b321_mafia.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2024

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vtjoeqwr\
2⤵
PID:2284

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zyokrns.exe" C:\Windows\SysWOW64\vtjoeqwr\
2⤵
PID:464

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create vtjoeqwr binPath= "C:\Windows\SysWOW64\vtjoeqwr\zyokrns.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-06-26_63d4972da8508414258d10652266b321_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:2876

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description vtjoeqwr "wifi internet conection"
2⤵
- Launches sc.exe
PID:4916

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start vtjoeqwr
2⤵
- Launches sc.exe
PID:3628

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
PID:4844

C:\Windows\SysWOW64\vtjoeqwr\zyokrns.exe
C:\Windows\SysWOW64\vtjoeqwr\zyokrns.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-06-26_63d4972da8508414258d10652266b321_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2756

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:3556

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4380,i,14648456027158448592,4956305794400220180,262144 --variations-seed-version --mojo-platform-channel-handle=3644 /prefetch:8
1⤵
PID:2832

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

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

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

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

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

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\zyokrns.exe
Filesize
13.0MB

MD5
ea0293afd60896c7dfd40c41cc28d54c

SHA1
e03d80c03be6935c4114867bf1e73421a3028617

SHA256
ffc96f11096b3878f8cfaa942f22e72082bcef9a80a98f1bef68a75edbd980a2

SHA512
64b6f14e6b737999186f627a645378718ec4480b346817072648613432723cca23e8fb2e691b1c33231be656e8345cdb60af9d5a5651bcd69ebe58b2c356aa79

Download Submit
memory/2024-1-0x0000000000690000-0x0000000000790000-memory.dmp

Filesize
1024KB

Download
memory/2024-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2024-7-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2024-6-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/2756-10-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/2756-15-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/2756-9-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/3556-13-0x0000000000510000-0x0000000000525000-memory.dmp

Filesize
84KB

Download
memory/3556-11-0x0000000000510000-0x0000000000525000-memory.dmp

Filesize
84KB

Download
memory/3556-16-0x0000000000510000-0x0000000000525000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads