tofsee | 4119098cb2c53b1fc2619b83c3eecee5e07dfda7c9e6734fd145721fad15cf65

Analysis

max time kernel
147s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
07/10/2024, 04:30

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General

Target
1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe
Size 10.5MB
Sample241007-e49z8awbpq
SHA256 4119098cb2c53b1fc2619b83c3eecee5e07dfda7c9e6734fd145721fad15cf65
MD5 1b7dbf198800af119607b4fd81e60e59
SHA1 f68c015bad7ec31ee18d4e097931511f329d59fc
SHA512 a432c931059746150d0072a212d102352640de6f8e81624b9549e7dd1f3883b14f71c549312af5bf24f0038ba23f43163d43057922cdf0ebb3b28e567ba9c9c9
SSDEEP 6144:frxbJOIoKZyaaUo9t+m7c74mOGjZP6NEpTvBzRxkac1B:jF/ZyaaUk+m7c7ZRiNEpTGa
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
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
2664	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\wxsjjnh\ImagePath = "C:\\Windows\\SysWOW64\\wxsjjnh\\lomhbisc.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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
3500	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2220	lomhbisc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2220 set thread context of 3500	2220	lomhbisc.exe	105

Launches sc.exe 3 IoCs

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

pid	Process
1504	sc.exe
4284	sc.exe
2616	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
1508	4768	WerFault.exe	88
2448	2220	WerFault.exe	99

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	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	lomhbisc.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
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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4768 wrote to memory of 2548	4768	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	89
PID 4768 wrote to memory of 2548	4768	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	89
PID 4768 wrote to memory of 2548	4768	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	89
PID 4768 wrote to memory of 396	4768	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	91
PID 4768 wrote to memory of 396	4768	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	91
PID 4768 wrote to memory of 396	4768	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	91
PID 4768 wrote to memory of 1504	4768	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	93
PID 4768 wrote to memory of 1504	4768	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	93
PID 4768 wrote to memory of 1504	4768	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	93
PID 4768 wrote to memory of 4284	4768	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	95
PID 4768 wrote to memory of 4284	4768	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	95
PID 4768 wrote to memory of 4284	4768	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	95
PID 4768 wrote to memory of 2616	4768	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	97
PID 4768 wrote to memory of 2616	4768	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	97
PID 4768 wrote to memory of 2616	4768	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	97
PID 4768 wrote to memory of 2664	4768	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	100
PID 4768 wrote to memory of 2664	4768	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	100
PID 4768 wrote to memory of 2664	4768	1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe	100
PID 2220 wrote to memory of 3500	2220	lomhbisc.exe	105
PID 2220 wrote to memory of 3500	2220	lomhbisc.exe	105
PID 2220 wrote to memory of 3500	2220	lomhbisc.exe	105
PID 2220 wrote to memory of 3500	2220	lomhbisc.exe	105
PID 2220 wrote to memory of 3500	2220	lomhbisc.exe	105

C:\Users\Admin\AppData\Local\Temp\1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4768
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wxsjjnh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2548
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\lomhbisc.exe" C:\Windows\SysWOW64\wxsjjnh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:396
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create wxsjjnh binPath= "C:\Windows\SysWOW64\wxsjjnh\lomhbisc.exe /d\"C:\Users\Admin\AppData\Local\Temp\1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1504
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description wxsjjnh "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4284
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start wxsjjnh
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2616
- 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:2664
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4768 -s 584
  2⤵
  - Program crash
  PID:1508

C:\Windows\SysWOW64\wxsjjnh\lomhbisc.exe
C:\Windows\SysWOW64\wxsjjnh\lomhbisc.exe /d"C:\Users\Admin\AppData\Local\Temp\1b7dbf198800af119607b4fd81e60e59_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2220
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3500
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2220 -s 564
  2⤵
  - Program crash
  PID:2448

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4768 -ip 4768
1⤵
PID:928

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 2220 -ip 2220
1⤵
PID:1332

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 --field-trial-handle=4360,i,7447299413640964517,4240724842020506306,262144 --variations-seed-version --mojo-platform-channel-handle=4408 /prefetch:8
1⤵
PID:3796

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

lomhbisc.exe

Path C:\Users\Admin\AppData\Local\Temp\lomhbisc.exe
Size 12.2MB
SHA256 7c5eaa7e05793c9e5fee769cd5aae6064905f6ba1f831a6742b04b062b3fb8b1
MD5 1d7338a5375d033d921ea6dacbea01dd
SHA1 d88b65ea280a42d8eec1ab9d5efaddc7d616c6d8
SHA512 6e2991aa7243dbcf88eecd5167349dba34236500694bc6d1bf62a46e1c3b8b5dc79ccc00991b8281e5cbe551a803da5170c6e78e231629cc720773d423dd9be7
SSDEEP 6144:YrxbJOIoKZyaaUo9t+m7c74mOGjZP6NEpTvBzRxkac1B:kF/ZyaaUk+m7c7ZRiNEpTGa
MD5 SHA1 SHA512 SSDEEP

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memory/2220-13-0x0000000000400000-0x000000000045D000-memory.dmp

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memory/2220-12-0x0000000000400000-0x000000000045D000-memory.dmp

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memory/2220-11-0x0000000000400000-0x000000000045D000-memory.dmp

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memory/2220-18-0x0000000000400000-0x000000000045D000-memory.dmp

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memory/3500-14-0x00000000009F0000-0x0000000000A05000-memory.dmp

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memory/3500-16-0x00000000009F0000-0x0000000000A05000-memory.dmp

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memory/3500-17-0x00000000009F0000-0x0000000000A05000-memory.dmp

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memory/4768-3-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/4768-2-0x0000000000490000-0x00000000004A3000-memory.dmp

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memory/4768-10-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/4768-9-0x0000000000490000-0x00000000004A3000-memory.dmp

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memory/4768-8-0x0000000000400000-0x000000000045D000-memory.dmp

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memory/4768-1-0x0000000000590000-0x0000000000690000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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