tofsee | bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee

Analysis

max time kernel
146s
max time network
146s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
26-12-2024 17:24

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General

Target

JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe
Size

166KB
MD5

91700c48e05518ccbc4794aae5cecda0
SHA1

1ca861daee99f49db51ec616c0e9189d5b9a6a19
SHA256

bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee
SHA512

270b780534727744ee92e1bf1cad19eeddb0c36dd57e72c0b1b3cbe690ea69acd7fbe2a9d5e2fe82b8aa10609d700ee06daca6a126d6dba7c0aab02498d3107a
SSDEEP

3072:mclL4ayATSh/zfcPnZ6MMr80mTG/5euKG/FaX:3YA+NfOZ6nr80Yzu

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\dchosaau = "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
276	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\dchosaau\ImagePath = "C:\\Windows\\SysWOW64\\dchosaau\\qtmusucm.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
528	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2680	qtmusucm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2680 set thread context of 528	2680	qtmusucm.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2800	sc.exe
2972	sc.exe
2604	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	cmd.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	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.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	qtmusucm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2716 wrote to memory of 2764	2716	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	30
PID 2716 wrote to memory of 2764	2716	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	30
PID 2716 wrote to memory of 2764	2716	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	30
PID 2716 wrote to memory of 2764	2716	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	30
PID 2716 wrote to memory of 2616	2716	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	32
PID 2716 wrote to memory of 2616	2716	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	32
PID 2716 wrote to memory of 2616	2716	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	32
PID 2716 wrote to memory of 2616	2716	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	32
PID 2716 wrote to memory of 2800	2716	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	34
PID 2716 wrote to memory of 2800	2716	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	34
PID 2716 wrote to memory of 2800	2716	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	34
PID 2716 wrote to memory of 2800	2716	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	34
PID 2716 wrote to memory of 2972	2716	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	36
PID 2716 wrote to memory of 2972	2716	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	36
PID 2716 wrote to memory of 2972	2716	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	36
PID 2716 wrote to memory of 2972	2716	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	36
PID 2716 wrote to memory of 2604	2716	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	38
PID 2716 wrote to memory of 2604	2716	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	38
PID 2716 wrote to memory of 2604	2716	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	38
PID 2716 wrote to memory of 2604	2716	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	38
PID 2716 wrote to memory of 276	2716	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	41
PID 2716 wrote to memory of 276	2716	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	41
PID 2716 wrote to memory of 276	2716	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	41
PID 2716 wrote to memory of 276	2716	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	41
PID 2680 wrote to memory of 528	2680	qtmusucm.exe	43
PID 2680 wrote to memory of 528	2680	qtmusucm.exe	43
PID 2680 wrote to memory of 528	2680	qtmusucm.exe	43
PID 2680 wrote to memory of 528	2680	qtmusucm.exe	43
PID 2680 wrote to memory of 528	2680	qtmusucm.exe	43
PID 2680 wrote to memory of 528	2680	qtmusucm.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2716
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dchosaau\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2764
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\qtmusucm.exe" C:\Windows\SysWOW64\dchosaau\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2616
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create dchosaau binPath= "C:\Windows\SysWOW64\dchosaau\qtmusucm.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2800
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description dchosaau "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2972
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start dchosaau
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2604
- 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:276

C:\Windows\SysWOW64\dchosaau\qtmusucm.exe
C:\Windows\SysWOW64\dchosaau\qtmusucm.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2680
- 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:528

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\qtmusucm.exe

Filesize
15.0MB

MD5
109fec7fda0ae33c1369242ddc7e5dce

SHA1
6424221222618cd2cb51db0f43870818e265f375

SHA256
3fc5f4bffbc1e5886b18c320654b8d3302c53d4efdb4c5ba5dea947aee718567

SHA512
ef624dab1d3eadc5798a102486b84c539ebf55599fd9be1bfb4e75ffa7f980f392b35ef4daeab18bd6c31a55cece2c3013c3707d1fe3c1245bd552e5ee1d0e7a

Download Submit
memory/528-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/528-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/528-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/528-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/528-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2680-17-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2716-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2716-2-0x0000000000250000-0x0000000000263000-memory.dmp

Filesize
76KB

Download
memory/2716-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2716-9-0x0000000000250000-0x0000000000263000-memory.dmp

Filesize
76KB

Download
memory/2716-8-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2716-1-0x0000000000270000-0x0000000000370000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads