tofsee | a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee

General

Target

JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe
Size

234KB
MD5

ed700237ae98c75e0552077ff9a4e162
SHA1

828692ee6880cd1f18da0f4c58566d6e5e8d6f92
SHA256

a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee
SHA512

e9ba4cf57563aafd1531b9a75f1d83b8e2f307ecef83e60e2467bd45482718581b96f7c792680e643e2d1587f2ce06b4476ed54502ba0cefded9237d0743bcc6
SSDEEP

6144:Ho9cm6juiXkrg3mtJ9fE53Z2fnpEfdmS:Hicm6juiUg3m5A34ald

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
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
760	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\skqtcjrm\ImagePath = "C:\\Windows\\SysWOW64\\skqtcjrm\\ubnajwxr.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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe

Deletes itself 1 IoCs

pid	Process
216	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4992	ubnajwxr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4992 set thread context of 216	4992	ubnajwxr.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
1604	sc.exe
3736	sc.exe
1280	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
3044	2228	WerFault.exe	81
2664	4992	WerFault.exe	92

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ubnajwxr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2228 wrote to memory of 1256	2228	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	82
PID 2228 wrote to memory of 1256	2228	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	82
PID 2228 wrote to memory of 1256	2228	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	82
PID 2228 wrote to memory of 3744	2228	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	84
PID 2228 wrote to memory of 3744	2228	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	84
PID 2228 wrote to memory of 3744	2228	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	84
PID 2228 wrote to memory of 1280	2228	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	86
PID 2228 wrote to memory of 1280	2228	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	86
PID 2228 wrote to memory of 1280	2228	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	86
PID 2228 wrote to memory of 1604	2228	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	88
PID 2228 wrote to memory of 1604	2228	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	88
PID 2228 wrote to memory of 1604	2228	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	88
PID 2228 wrote to memory of 3736	2228	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	90
PID 2228 wrote to memory of 3736	2228	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	90
PID 2228 wrote to memory of 3736	2228	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	90
PID 2228 wrote to memory of 760	2228	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	93
PID 2228 wrote to memory of 760	2228	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	93
PID 2228 wrote to memory of 760	2228	JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe	93
PID 4992 wrote to memory of 216	4992	ubnajwxr.exe	98
PID 4992 wrote to memory of 216	4992	ubnajwxr.exe	98
PID 4992 wrote to memory of 216	4992	ubnajwxr.exe	98
PID 4992 wrote to memory of 216	4992	ubnajwxr.exe	98
PID 4992 wrote to memory of 216	4992	ubnajwxr.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2228
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\skqtcjrm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1256
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ubnajwxr.exe" C:\Windows\SysWOW64\skqtcjrm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3744
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create skqtcjrm binPath= "C:\Windows\SysWOW64\skqtcjrm\ubnajwxr.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1280
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description skqtcjrm "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1604
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start skqtcjrm
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3736
- 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:760
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2228 -s 1036
  2⤵
  - Program crash
  PID:3044

C:\Windows\SysWOW64\skqtcjrm\ubnajwxr.exe
C:\Windows\SysWOW64\skqtcjrm\ubnajwxr.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a28d43022796b67f3436e736c9b4539640cb57673304c77f93f53d73e2edd3ee.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4992
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:216
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4992 -s 520
  2⤵
  - Program crash
  PID:2664

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2228 -ip 2228
1⤵
PID:888

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4992 -ip 4992
1⤵
PID:244

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\ubnajwxr.exe

Filesize
12.4MB

MD5
542f232fab3400404ce879a321150330

SHA1
f040ab5769b3b46e459a024364bd5d5d3961d164

SHA256
1018be5583412fc23e2acf32fe6a237423c4135197496587533921dd40060b5e

SHA512
b6f7c64363c4cb0e10a05afb652777e288110b012379b153a7af92f68e4bf8f1da5f91578dc5f2b10c88d360529e11e13385b45f50a3d2508238320f03f2dde8

Download Submit
memory/216-13-0x0000000000E00000-0x0000000000E15000-memory.dmp

Filesize
84KB

Download
memory/216-15-0x0000000000E00000-0x0000000000E15000-memory.dmp

Filesize
84KB

Download
memory/216-18-0x0000000000E00000-0x0000000000E15000-memory.dmp

Filesize
84KB

Download
memory/2228-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2228-2-0x0000000000BC0000-0x0000000000BD3000-memory.dmp

Filesize
76KB

Download
memory/2228-11-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2228-1-0x0000000000BF0000-0x0000000000CF0000-memory.dmp

Filesize
1024KB

Download
memory/2228-10-0x0000000000BC0000-0x0000000000BD3000-memory.dmp

Filesize
76KB

Download
memory/2228-8-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/4992-12-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/4992-16-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/4992-9-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads