tofsee | 31deb36fb3dedd632e9472f2b85c101889dba1133ad199a61cab3f8d89204bf1

General

Target

a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe
Size

13.5MB
MD5

a986ebd7bd52f4596e4b317b65e9bb53
SHA1

7e99414758f009fe8bb2c7683914f3591f3deff5
SHA256

31deb36fb3dedd632e9472f2b85c101889dba1133ad199a61cab3f8d89204bf1
SHA512

aa4c1181640300e377950a69898f9ded652d61295063cb75ec6b0ec10c5f65402d9a6510bd5862d94bd015752faccbf1534f6c11cbf7f49498b108cdb4e8eb5f
SSDEEP

12288:YaCPuKabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb7:guK

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

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
4204	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\dcleqtgx\ImagePath = "C:\\Windows\\SysWOW64\\dcleqtgx\\gajtgjoa.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	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2656	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
692	gajtgjoa.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 692 set thread context of 2656	692	gajtgjoa.exe	115

Launches sc.exe 3 IoCs

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

pid	Process
4784	sc.exe
4256	sc.exe
4080	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	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.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	gajtgjoa.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4556 wrote to memory of 780	4556	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	99
PID 4556 wrote to memory of 780	4556	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	99
PID 4556 wrote to memory of 780	4556	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	99
PID 4556 wrote to memory of 4052	4556	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	101
PID 4556 wrote to memory of 4052	4556	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	101
PID 4556 wrote to memory of 4052	4556	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	101
PID 4556 wrote to memory of 4080	4556	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	104
PID 4556 wrote to memory of 4080	4556	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	104
PID 4556 wrote to memory of 4080	4556	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	104
PID 4556 wrote to memory of 4784	4556	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	106
PID 4556 wrote to memory of 4784	4556	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	106
PID 4556 wrote to memory of 4784	4556	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	106
PID 4556 wrote to memory of 4256	4556	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	108
PID 4556 wrote to memory of 4256	4556	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	108
PID 4556 wrote to memory of 4256	4556	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	108
PID 4556 wrote to memory of 4204	4556	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	111
PID 4556 wrote to memory of 4204	4556	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	111
PID 4556 wrote to memory of 4204	4556	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	111
PID 692 wrote to memory of 2656	692	gajtgjoa.exe	115
PID 692 wrote to memory of 2656	692	gajtgjoa.exe	115
PID 692 wrote to memory of 2656	692	gajtgjoa.exe	115
PID 692 wrote to memory of 2656	692	gajtgjoa.exe	115
PID 692 wrote to memory of 2656	692	gajtgjoa.exe	115

C:\Users\Admin\AppData\Local\Temp\a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4556
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dcleqtgx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:780
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gajtgjoa.exe" C:\Windows\SysWOW64\dcleqtgx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4052
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create dcleqtgx binPath= "C:\Windows\SysWOW64\dcleqtgx\gajtgjoa.exe /d\"C:\Users\Admin\AppData\Local\Temp\a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4080
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description dcleqtgx "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4784
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start dcleqtgx
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4256
- 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:4204

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=1296,i,1602949858158667699,12464335823361976127,262144 --variations-seed-version --mojo-platform-channel-handle=4116 /prefetch:8
1⤵
PID:4412

C:\Windows\SysWOW64\dcleqtgx\gajtgjoa.exe
C:\Windows\SysWOW64\dcleqtgx\gajtgjoa.exe /d"C:\Users\Admin\AppData\Local\Temp\a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:692
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2656

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\gajtgjoa.exe

Filesize
12.0MB

MD5
eb806cd1a977120e3794bdf3c305789c

SHA1
415ddff7b55be85512cec6e7c243755da525471d

SHA256
0251b988e5523a03c8fb59fc494b3c624ffa3ced366000ffbef57c247ca0dc73

SHA512
36c083b8408c8e9012cc2fb5c2d048d4fa302a7a817010d7f2ba43e8e4815644fa76613991bef2625e2ad199ac9c3ad92f965f5811945e0252580203cf87a6a6

Download Submit
memory/692-11-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/692-13-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/692-12-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/692-16-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/2656-14-0x0000000000B20000-0x0000000000B35000-memory.dmp

Filesize
84KB

Download
memory/2656-18-0x0000000000B20000-0x0000000000B35000-memory.dmp

Filesize
84KB

Download
memory/2656-19-0x0000000000B20000-0x0000000000B35000-memory.dmp

Filesize
84KB

Download
memory/4556-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4556-2-0x0000000000610000-0x0000000000623000-memory.dmp

Filesize
76KB

Download
memory/4556-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4556-9-0x0000000000610000-0x0000000000623000-memory.dmp

Filesize
76KB

Download
memory/4556-8-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/4556-1-0x0000000000680000-0x0000000000780000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads