tofsee | 753ec892deb630e1b540058617837fdfaeabdae4078bc0917c055a805d4752e7

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
27/12/2024, 00:03

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General

Target
JaffaCakes118_753ec892deb630e1b540058617837fdfaeabdae4078bc0917c055a805d4752e7.exe
Size 279KB
Sample241227-achdnswkfj
SHA256 753ec892deb630e1b540058617837fdfaeabdae4078bc0917c055a805d4752e7
MD5 295cc2519a6559471017d7cfa7963906
SHA1 48d5984d57e5efa254fe2557488274f3845874bf
SHA512 eeffc54acd8c1a38b8401b111829259de886fcf42da365612453a1b2a14943712a73298663e9d864df2260e805c22bdbcaf05082c1deaec917ea22b1f3d7970d
SSDEEP 6144:2ExHiDcpQKTyzmBosTPI3K3XROhxxpeTr/ekIw:ZHiIpQFmi2Yzxp6L
MD5 SHA1 SHA512 SSDEEP

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
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
2560	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\ydwarkes\ImagePath = "C:\\Windows\\SysWOW64\\ydwarkes\\elomnndr.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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	JaffaCakes118_753ec892deb630e1b540058617837fdfaeabdae4078bc0917c055a805d4752e7.exe

Deletes itself 1 IoCs

pid	Process
1708	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3908	elomnndr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3908 set thread context of 1708	3908	elomnndr.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
2436	sc.exe
3720	sc.exe
3508	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
5068	3760	WerFault.exe	83
3184	3908	WerFault.exe	94

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_753ec892deb630e1b540058617837fdfaeabdae4078bc0917c055a805d4752e7.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	netsh.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	elomnndr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3760 wrote to memory of 1088	3760	JaffaCakes118_753ec892deb630e1b540058617837fdfaeabdae4078bc0917c055a805d4752e7.exe	84
PID 3760 wrote to memory of 1088	3760	JaffaCakes118_753ec892deb630e1b540058617837fdfaeabdae4078bc0917c055a805d4752e7.exe	84
PID 3760 wrote to memory of 1088	3760	JaffaCakes118_753ec892deb630e1b540058617837fdfaeabdae4078bc0917c055a805d4752e7.exe	84
PID 3760 wrote to memory of 820	3760	JaffaCakes118_753ec892deb630e1b540058617837fdfaeabdae4078bc0917c055a805d4752e7.exe	86
PID 3760 wrote to memory of 820	3760	JaffaCakes118_753ec892deb630e1b540058617837fdfaeabdae4078bc0917c055a805d4752e7.exe	86
PID 3760 wrote to memory of 820	3760	JaffaCakes118_753ec892deb630e1b540058617837fdfaeabdae4078bc0917c055a805d4752e7.exe	86
PID 3760 wrote to memory of 2436	3760	JaffaCakes118_753ec892deb630e1b540058617837fdfaeabdae4078bc0917c055a805d4752e7.exe	88
PID 3760 wrote to memory of 2436	3760	JaffaCakes118_753ec892deb630e1b540058617837fdfaeabdae4078bc0917c055a805d4752e7.exe	88
PID 3760 wrote to memory of 2436	3760	JaffaCakes118_753ec892deb630e1b540058617837fdfaeabdae4078bc0917c055a805d4752e7.exe	88
PID 3760 wrote to memory of 3720	3760	JaffaCakes118_753ec892deb630e1b540058617837fdfaeabdae4078bc0917c055a805d4752e7.exe	90
PID 3760 wrote to memory of 3720	3760	JaffaCakes118_753ec892deb630e1b540058617837fdfaeabdae4078bc0917c055a805d4752e7.exe	90
PID 3760 wrote to memory of 3720	3760	JaffaCakes118_753ec892deb630e1b540058617837fdfaeabdae4078bc0917c055a805d4752e7.exe	90
PID 3760 wrote to memory of 3508	3760	JaffaCakes118_753ec892deb630e1b540058617837fdfaeabdae4078bc0917c055a805d4752e7.exe	92
PID 3760 wrote to memory of 3508	3760	JaffaCakes118_753ec892deb630e1b540058617837fdfaeabdae4078bc0917c055a805d4752e7.exe	92
PID 3760 wrote to memory of 3508	3760	JaffaCakes118_753ec892deb630e1b540058617837fdfaeabdae4078bc0917c055a805d4752e7.exe	92
PID 3760 wrote to memory of 2560	3760	JaffaCakes118_753ec892deb630e1b540058617837fdfaeabdae4078bc0917c055a805d4752e7.exe	95
PID 3760 wrote to memory of 2560	3760	JaffaCakes118_753ec892deb630e1b540058617837fdfaeabdae4078bc0917c055a805d4752e7.exe	95
PID 3760 wrote to memory of 2560	3760	JaffaCakes118_753ec892deb630e1b540058617837fdfaeabdae4078bc0917c055a805d4752e7.exe	95
PID 3908 wrote to memory of 1708	3908	elomnndr.exe	100
PID 3908 wrote to memory of 1708	3908	elomnndr.exe	100
PID 3908 wrote to memory of 1708	3908	elomnndr.exe	100
PID 3908 wrote to memory of 1708	3908	elomnndr.exe	100
PID 3908 wrote to memory of 1708	3908	elomnndr.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_753ec892deb630e1b540058617837fdfaeabdae4078bc0917c055a805d4752e7.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_753ec892deb630e1b540058617837fdfaeabdae4078bc0917c055a805d4752e7.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3760
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ydwarkes\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1088
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\elomnndr.exe" C:\Windows\SysWOW64\ydwarkes\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:820
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ydwarkes binPath= "C:\Windows\SysWOW64\ydwarkes\elomnndr.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_753ec892deb630e1b540058617837fdfaeabdae4078bc0917c055a805d4752e7.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2436
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ydwarkes "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3720
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ydwarkes
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3508
- 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:2560
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3760 -s 1172
  2⤵
  - Program crash
  PID:5068

C:\Windows\SysWOW64\ydwarkes\elomnndr.exe
C:\Windows\SysWOW64\ydwarkes\elomnndr.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_753ec892deb630e1b540058617837fdfaeabdae4078bc0917c055a805d4752e7.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3908
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1708
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3908 -s 532
  2⤵
  - Program crash
  PID:3184

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3760 -ip 3760
1⤵
PID:4600

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 3908 -ip 3908
1⤵
PID:4808

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

elomnndr.exe

Path C:\Users\Admin\AppData\Local\Temp\elomnndr.exe
Size 13.2MB
SHA256 e9a296e2c2b63ca77096efdd0b332e9de4491723eee808f20a4c507c21ce3f22
MD5 4d75266853f51c47b60971fddd3cd856
SHA1 3f413324b969b858021f61c7e2a289df243b39a3
SHA512 a7006c1a8863ea28f96f3de10171ec47444efc3adf7b7ce62a0268591737a16121320856eb94ffaaa85a51d7ce4a68b247d93b668618dc16d73de6c09f54bda2
SSDEEP 393216:dITTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTj:
MD5 SHA1 SHA512 SSDEEP

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memory/1708-14-0x0000000000C80000-0x0000000000C95000-memory.dmp

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memory/1708-17-0x0000000000C80000-0x0000000000C95000-memory.dmp

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memory/1708-16-0x0000000000C80000-0x0000000000C95000-memory.dmp

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memory/3760-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

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memory/3760-10-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/3760-1-0x00000000006F0000-0x00000000007F0000-memory.dmp

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memory/3760-8-0x0000000000400000-0x0000000000452000-memory.dmp

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memory/3760-3-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/3760-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

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memory/3908-12-0x0000000000400000-0x0000000000452000-memory.dmp

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memory/3908-11-0x0000000000400000-0x0000000000452000-memory.dmp

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memory/3908-13-0x0000000000400000-0x0000000000452000-memory.dmp

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memory/3908-18-0x0000000000400000-0x0000000000452000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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