tofsee | 82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3

Analysis

max time kernel
144s
max time network
145s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
24-12-2024 12:56

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General

Target

JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe
Size

260KB
MD5

e7d738f6e1345dab0f39cc246f252a51
SHA1

047a32c253e10070201ddb8c42559f463279c08a
SHA256

82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3
SHA512

7bcb0e1b8a39d9e36cf136c0fe7b330e0cffed1d9ef9b8746f8edf260e46e7ec658ed24ba1b810f474d661a06e8d579ebffdbc8c3d811efb23d61b2bc6fb829d
SSDEEP

3072:Q4iCVSdVB63QbxnVIFgy2Vt19Itux5sVggjcGkNIVqIOM/h38RaoBIGvj7:PxSdVBAQlnVImHtItuk7ITsqx1awb7

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

patmushta.info

ovicrush.cn

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\efkhmlju = "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
2876	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\efkhmlju\ImagePath = "C:\\Windows\\SysWOW64\\efkhmlju\\bjecapkz.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2976	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2808	bjecapkz.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2808 set thread context of 2976	2808	bjecapkz.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2372	sc.exe
2472	sc.exe
2752	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	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bjecapkz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2528 wrote to memory of 2376	2528	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	30
PID 2528 wrote to memory of 2376	2528	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	30
PID 2528 wrote to memory of 2376	2528	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	30
PID 2528 wrote to memory of 2376	2528	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	30
PID 2528 wrote to memory of 1840	2528	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	32
PID 2528 wrote to memory of 1840	2528	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	32
PID 2528 wrote to memory of 1840	2528	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	32
PID 2528 wrote to memory of 1840	2528	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	32
PID 2528 wrote to memory of 2372	2528	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	34
PID 2528 wrote to memory of 2372	2528	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	34
PID 2528 wrote to memory of 2372	2528	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	34
PID 2528 wrote to memory of 2372	2528	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	34
PID 2528 wrote to memory of 2472	2528	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	36
PID 2528 wrote to memory of 2472	2528	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	36
PID 2528 wrote to memory of 2472	2528	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	36
PID 2528 wrote to memory of 2472	2528	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	36
PID 2528 wrote to memory of 2752	2528	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	38
PID 2528 wrote to memory of 2752	2528	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	38
PID 2528 wrote to memory of 2752	2528	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	38
PID 2528 wrote to memory of 2752	2528	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	38
PID 2528 wrote to memory of 2876	2528	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	41
PID 2528 wrote to memory of 2876	2528	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	41
PID 2528 wrote to memory of 2876	2528	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	41
PID 2528 wrote to memory of 2876	2528	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	41
PID 2808 wrote to memory of 2976	2808	bjecapkz.exe	43
PID 2808 wrote to memory of 2976	2808	bjecapkz.exe	43
PID 2808 wrote to memory of 2976	2808	bjecapkz.exe	43
PID 2808 wrote to memory of 2976	2808	bjecapkz.exe	43
PID 2808 wrote to memory of 2976	2808	bjecapkz.exe	43
PID 2808 wrote to memory of 2976	2808	bjecapkz.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2528
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\efkhmlju\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2376
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bjecapkz.exe" C:\Windows\SysWOW64\efkhmlju\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1840
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create efkhmlju binPath= "C:\Windows\SysWOW64\efkhmlju\bjecapkz.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2372
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description efkhmlju "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2472
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start efkhmlju
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2752
- 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:2876

C:\Windows\SysWOW64\efkhmlju\bjecapkz.exe
C:\Windows\SysWOW64\efkhmlju\bjecapkz.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2808
- 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:2976

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\bjecapkz.exe

Filesize
13.9MB

MD5
4e073c938cdcf15adde14c94e1e693fb

SHA1
4450b618f7ecb18d59e4d51a0f5cc8e8730685df

SHA256
ba79c146405f5d595ec2cc559a321c573499d135026e23bab81399c6493ed765

SHA512
777278c25328e8babc396233d61730f77771a592d782e3fabb4d738536e6fc9b937fea180ef62a2578241318e8085f9adcf03a9c8bc919b7f1d9a921423c5887

Download Submit
memory/2528-8-0x0000000000230000-0x0000000000243000-memory.dmp

Filesize
76KB

Download
memory/2528-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2528-1-0x0000000000230000-0x0000000000243000-memory.dmp

Filesize
76KB

Download
memory/2528-6-0x0000000000400000-0x000000000065A000-memory.dmp

Filesize
2.4MB

Download
memory/2528-7-0x0000000000220000-0x000000000022D000-memory.dmp

Filesize
52KB

Download
memory/2528-0-0x0000000000220000-0x000000000022D000-memory.dmp

Filesize
52KB

Download
memory/2528-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2808-16-0x0000000000400000-0x000000000065A000-memory.dmp

Filesize
2.4MB

Download
memory/2976-15-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2976-13-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2976-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2976-10-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2976-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads