tofsee | 48ecbdbb956f7aa8b648d3dc806f1b0555ae6d03aac761d39c0c431116cde001

General

Target

6e8f216b8825a770e65be7dd6bbc4205_JaffaCakes118.exe
Size

14.2MB
MD5

6e8f216b8825a770e65be7dd6bbc4205
SHA1

678a3d5627cb9f024bb113135402bf40f1314a4b
SHA256

48ecbdbb956f7aa8b648d3dc806f1b0555ae6d03aac761d39c0c431116cde001
SHA512

475c2651c38a12c58f604515416e00fb94ae496db0d96e1fd691b15822d368ab4f6ea675a76a25ff6ac0a2a1bf86855764f14a2428807a2221d3aa036f21db2e
SSDEEP

12288:U6oEnffffffffffffffffffffffffffffffffffffffffffffffffffffffffff/:U6

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
4528	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\azekfjop\ImagePath = "C:\\Windows\\SysWOW64\\azekfjop\\dxtzkums.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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	6e8f216b8825a770e65be7dd6bbc4205_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
1656	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2368	dxtzkums.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2368 set thread context of 1656	2368	dxtzkums.exe	110

Launches sc.exe 3 IoCs

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

pid	Process
1456	sc.exe
3088	sc.exe
1844	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
516	3676	WerFault.exe	83
3784	2368	WerFault.exe	103

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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	dxtzkums.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6e8f216b8825a770e65be7dd6bbc4205_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3676 wrote to memory of 2888	3676	6e8f216b8825a770e65be7dd6bbc4205_JaffaCakes118.exe	87
PID 3676 wrote to memory of 2888	3676	6e8f216b8825a770e65be7dd6bbc4205_JaffaCakes118.exe	87
PID 3676 wrote to memory of 2888	3676	6e8f216b8825a770e65be7dd6bbc4205_JaffaCakes118.exe	87
PID 3676 wrote to memory of 5044	3676	6e8f216b8825a770e65be7dd6bbc4205_JaffaCakes118.exe	89
PID 3676 wrote to memory of 5044	3676	6e8f216b8825a770e65be7dd6bbc4205_JaffaCakes118.exe	89
PID 3676 wrote to memory of 5044	3676	6e8f216b8825a770e65be7dd6bbc4205_JaffaCakes118.exe	89
PID 3676 wrote to memory of 3088	3676	6e8f216b8825a770e65be7dd6bbc4205_JaffaCakes118.exe	93
PID 3676 wrote to memory of 3088	3676	6e8f216b8825a770e65be7dd6bbc4205_JaffaCakes118.exe	93
PID 3676 wrote to memory of 3088	3676	6e8f216b8825a770e65be7dd6bbc4205_JaffaCakes118.exe	93
PID 3676 wrote to memory of 1844	3676	6e8f216b8825a770e65be7dd6bbc4205_JaffaCakes118.exe	95
PID 3676 wrote to memory of 1844	3676	6e8f216b8825a770e65be7dd6bbc4205_JaffaCakes118.exe	95
PID 3676 wrote to memory of 1844	3676	6e8f216b8825a770e65be7dd6bbc4205_JaffaCakes118.exe	95
PID 3676 wrote to memory of 1456	3676	6e8f216b8825a770e65be7dd6bbc4205_JaffaCakes118.exe	100
PID 3676 wrote to memory of 1456	3676	6e8f216b8825a770e65be7dd6bbc4205_JaffaCakes118.exe	100
PID 3676 wrote to memory of 1456	3676	6e8f216b8825a770e65be7dd6bbc4205_JaffaCakes118.exe	100
PID 3676 wrote to memory of 4528	3676	6e8f216b8825a770e65be7dd6bbc4205_JaffaCakes118.exe	104
PID 3676 wrote to memory of 4528	3676	6e8f216b8825a770e65be7dd6bbc4205_JaffaCakes118.exe	104
PID 3676 wrote to memory of 4528	3676	6e8f216b8825a770e65be7dd6bbc4205_JaffaCakes118.exe	104
PID 2368 wrote to memory of 1656	2368	dxtzkums.exe	110
PID 2368 wrote to memory of 1656	2368	dxtzkums.exe	110
PID 2368 wrote to memory of 1656	2368	dxtzkums.exe	110
PID 2368 wrote to memory of 1656	2368	dxtzkums.exe	110
PID 2368 wrote to memory of 1656	2368	dxtzkums.exe	110

C:\Users\Admin\AppData\Local\Temp\6e8f216b8825a770e65be7dd6bbc4205_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\6e8f216b8825a770e65be7dd6bbc4205_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3676
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\azekfjop\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2888
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\dxtzkums.exe" C:\Windows\SysWOW64\azekfjop\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5044
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create azekfjop binPath= "C:\Windows\SysWOW64\azekfjop\dxtzkums.exe /d\"C:\Users\Admin\AppData\Local\Temp\6e8f216b8825a770e65be7dd6bbc4205_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3088
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description azekfjop "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1844
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start azekfjop
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1456
- 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:4528
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3676 -s 1188
  2⤵
  - Program crash
  PID:516

C:\Windows\SysWOW64\azekfjop\dxtzkums.exe
C:\Windows\SysWOW64\azekfjop\dxtzkums.exe /d"C:\Users\Admin\AppData\Local\Temp\6e8f216b8825a770e65be7dd6bbc4205_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2368
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1656
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2368 -s 512
  2⤵
  - Program crash
  PID:3784

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3676 -ip 3676
1⤵
PID:4224

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2368 -ip 2368
1⤵
PID:2364

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\dxtzkums.exe

Filesize
13.5MB

MD5
f394f92d250d3d97f09ef823d60ffb40

SHA1
d9a0f220fa029b68b46758388bc59b5c8629596e

SHA256
4ccf52cee3bca4c223eb05175b7d9ee3e05224ce26e48ea3f0e6bd6d3375658c

SHA512
71ff248ee1c970733af549919d99e13463bb8817bfdfe87592919229bde7e209d43b76a8dce7fbc2ffd4afd9589bc0ae0bfceae629e577358a0dedbcc632c0c4

Download Submit
memory/1656-14-0x0000000000560000-0x0000000000575000-memory.dmp

Filesize
84KB

Download
memory/1656-17-0x0000000000560000-0x0000000000575000-memory.dmp

Filesize
84KB

Download
memory/1656-16-0x0000000000560000-0x0000000000575000-memory.dmp

Filesize
84KB

Download
memory/2368-13-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/2368-11-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/2368-12-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/2368-18-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/3676-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3676-9-0x00000000021F0000-0x0000000002203000-memory.dmp

Filesize
76KB

Download
memory/3676-1-0x0000000000850000-0x0000000000950000-memory.dmp

Filesize
1024KB

Download
memory/3676-8-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/3676-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3676-2-0x00000000021F0000-0x0000000002203000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads