tofsee | a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee

Analysis

max time kernel
144s
max time network
144s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
25-12-2024 17:18

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General

Target

JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe
Size

234KB
MD5

ed700237ae98c75e0552077ff9a4e162
SHA1

828692ee6880cd1f18da0f4c58566d6e5e8d6f92
SHA256

a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee
SHA512

e9ba4cf57563aafd1531b9a75f1d83b8e2f307ecef83e60e2467bd45482718581b96f7c792680e643e2d1587f2ce06b4476ed54502ba0cefded9237d0743bcc6
SSDEEP

6144:Ho9cm6juiXkrg3mtJ9fE53Z2fnpEfdmS:Hicm6juiUg3m5A34ald

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

defeatwax.ru

refabyd.info

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Tofsee family
tofsee

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\ywmepsho = "0"	svchost.exe

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
2932	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\ywmepsho\ImagePath = "C:\\Windows\\SysWOW64\\ywmepsho\\oahbgmzh.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2804	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2772	oahbgmzh.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2772 set thread context of 2804	2772	oahbgmzh.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
2780	sc.exe
2892	sc.exe
2748	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	cmd.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	oahbgmzh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1200 wrote to memory of 1216	1200	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	29
PID 1200 wrote to memory of 1216	1200	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	29
PID 1200 wrote to memory of 1216	1200	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	29
PID 1200 wrote to memory of 1216	1200	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	29
PID 1200 wrote to memory of 2332	1200	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	31
PID 1200 wrote to memory of 2332	1200	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	31
PID 1200 wrote to memory of 2332	1200	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	31
PID 1200 wrote to memory of 2332	1200	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	31
PID 1200 wrote to memory of 2780	1200	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	33
PID 1200 wrote to memory of 2780	1200	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	33
PID 1200 wrote to memory of 2780	1200	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	33
PID 1200 wrote to memory of 2780	1200	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	33
PID 1200 wrote to memory of 2892	1200	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	35
PID 1200 wrote to memory of 2892	1200	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	35
PID 1200 wrote to memory of 2892	1200	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	35
PID 1200 wrote to memory of 2892	1200	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	35
PID 1200 wrote to memory of 2748	1200	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	37
PID 1200 wrote to memory of 2748	1200	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	37
PID 1200 wrote to memory of 2748	1200	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	37
PID 1200 wrote to memory of 2748	1200	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	37
PID 1200 wrote to memory of 2932	1200	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	40
PID 1200 wrote to memory of 2932	1200	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	40
PID 1200 wrote to memory of 2932	1200	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	40
PID 1200 wrote to memory of 2932	1200	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	40
PID 2772 wrote to memory of 2804	2772	oahbgmzh.exe	42
PID 2772 wrote to memory of 2804	2772	oahbgmzh.exe	42
PID 2772 wrote to memory of 2804	2772	oahbgmzh.exe	42
PID 2772 wrote to memory of 2804	2772	oahbgmzh.exe	42
PID 2772 wrote to memory of 2804	2772	oahbgmzh.exe	42
PID 2772 wrote to memory of 2804	2772	oahbgmzh.exe	42

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1200
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ywmepsho\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1216
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\oahbgmzh.exe" C:\Windows\SysWOW64\ywmepsho\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2332
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ywmepsho binPath= "C:\Windows\SysWOW64\ywmepsho\oahbgmzh.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2780
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ywmepsho "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2892
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ywmepsho
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2748
- 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:2932

C:\Windows\SysWOW64\ywmepsho\oahbgmzh.exe
C:\Windows\SysWOW64\ywmepsho\oahbgmzh.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2772
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2804

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

Disable or Modify Tools

T1562.001

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\oahbgmzh.exe

Filesize
12.8MB

MD5
072ff0d011a0adb8eee1547518f1203a

SHA1
5ee65c7277f06e53594a0be9ae18517167b3f692

SHA256
6afd9bdc20058fa76c3f3624ebda7a32667f4c90b3929709caa89c5f3475f8fe

SHA512
54996003bb8b6b69976cc5717f68b258246cf906d7fc3892fe8e9ed5a6b9694e1d1a3cb659c131660688cd857e82de198587d1cffb66261c8872d86d7f4c7bad

Download Submit
memory/1200-8-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/1200-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1200-1-0x0000000000CD0000-0x0000000000DD0000-memory.dmp

Filesize
1024KB

Download
memory/1200-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1200-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1200-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2772-17-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/2804-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2804-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2804-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2804-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2804-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads