tofsee | df8d530ece00c2099eca123d50c6854ae0fc11fc69756e3fc6b7940e6c9583c4

General

Target

e5a1f80633af2e489a335603dcdce8a1_JaffaCakes118.exe
Size

12.9MB
MD5

e5a1f80633af2e489a335603dcdce8a1
SHA1

17ee8592e4a2a79b135af7b285a0d12261e0dcb8
SHA256

df8d530ece00c2099eca123d50c6854ae0fc11fc69756e3fc6b7940e6c9583c4
SHA512

3444afa24abba60b3b0d1e7efca97a0008c90ca7b65a5f97d70dacb1c7d912b5c7086637332b8bfb7a485e3c25048c5b618cb650a5d0724a8186fb3775aa7ef0
SSDEEP

49152:c2mNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN:p

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
3520	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\hkuwzhjf\ImagePath = "C:\\Windows\\SysWOW64\\hkuwzhjf\\xatbzbjt.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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	e5a1f80633af2e489a335603dcdce8a1_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
3708	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2008	xatbzbjt.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2008 set thread context of 3708	2008	xatbzbjt.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
2392	sc.exe
4876	sc.exe
2272	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
4700	4756	WerFault.exe	81
1464	2008	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	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	e5a1f80633af2e489a335603dcdce8a1_JaffaCakes118.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	xatbzbjt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4756 wrote to memory of 4504	4756	e5a1f80633af2e489a335603dcdce8a1_JaffaCakes118.exe	82
PID 4756 wrote to memory of 4504	4756	e5a1f80633af2e489a335603dcdce8a1_JaffaCakes118.exe	82
PID 4756 wrote to memory of 4504	4756	e5a1f80633af2e489a335603dcdce8a1_JaffaCakes118.exe	82
PID 4756 wrote to memory of 3664	4756	e5a1f80633af2e489a335603dcdce8a1_JaffaCakes118.exe	84
PID 4756 wrote to memory of 3664	4756	e5a1f80633af2e489a335603dcdce8a1_JaffaCakes118.exe	84
PID 4756 wrote to memory of 3664	4756	e5a1f80633af2e489a335603dcdce8a1_JaffaCakes118.exe	84
PID 4756 wrote to memory of 2392	4756	e5a1f80633af2e489a335603dcdce8a1_JaffaCakes118.exe	86
PID 4756 wrote to memory of 2392	4756	e5a1f80633af2e489a335603dcdce8a1_JaffaCakes118.exe	86
PID 4756 wrote to memory of 2392	4756	e5a1f80633af2e489a335603dcdce8a1_JaffaCakes118.exe	86
PID 4756 wrote to memory of 4876	4756	e5a1f80633af2e489a335603dcdce8a1_JaffaCakes118.exe	88
PID 4756 wrote to memory of 4876	4756	e5a1f80633af2e489a335603dcdce8a1_JaffaCakes118.exe	88
PID 4756 wrote to memory of 4876	4756	e5a1f80633af2e489a335603dcdce8a1_JaffaCakes118.exe	88
PID 4756 wrote to memory of 2272	4756	e5a1f80633af2e489a335603dcdce8a1_JaffaCakes118.exe	90
PID 4756 wrote to memory of 2272	4756	e5a1f80633af2e489a335603dcdce8a1_JaffaCakes118.exe	90
PID 4756 wrote to memory of 2272	4756	e5a1f80633af2e489a335603dcdce8a1_JaffaCakes118.exe	90
PID 4756 wrote to memory of 3520	4756	e5a1f80633af2e489a335603dcdce8a1_JaffaCakes118.exe	93
PID 4756 wrote to memory of 3520	4756	e5a1f80633af2e489a335603dcdce8a1_JaffaCakes118.exe	93
PID 4756 wrote to memory of 3520	4756	e5a1f80633af2e489a335603dcdce8a1_JaffaCakes118.exe	93
PID 2008 wrote to memory of 3708	2008	xatbzbjt.exe	98
PID 2008 wrote to memory of 3708	2008	xatbzbjt.exe	98
PID 2008 wrote to memory of 3708	2008	xatbzbjt.exe	98
PID 2008 wrote to memory of 3708	2008	xatbzbjt.exe	98
PID 2008 wrote to memory of 3708	2008	xatbzbjt.exe	98

C:\Users\Admin\AppData\Local\Temp\e5a1f80633af2e489a335603dcdce8a1_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e5a1f80633af2e489a335603dcdce8a1_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4756
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hkuwzhjf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4504
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xatbzbjt.exe" C:\Windows\SysWOW64\hkuwzhjf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3664
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create hkuwzhjf binPath= "C:\Windows\SysWOW64\hkuwzhjf\xatbzbjt.exe /d\"C:\Users\Admin\AppData\Local\Temp\e5a1f80633af2e489a335603dcdce8a1_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2392
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description hkuwzhjf "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4876
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start hkuwzhjf
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2272
- 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:3520
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4756 -s 1172
  2⤵
  - Program crash
  PID:4700

C:\Windows\SysWOW64\hkuwzhjf\xatbzbjt.exe
C:\Windows\SysWOW64\hkuwzhjf\xatbzbjt.exe /d"C:\Users\Admin\AppData\Local\Temp\e5a1f80633af2e489a335603dcdce8a1_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2008
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3708
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2008 -s 512
  2⤵
  - Program crash
  PID:1464

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4756 -ip 4756
1⤵
PID:664

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2008 -ip 2008
1⤵
PID:2176

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\xatbzbjt.exe

Filesize
13.6MB

MD5
b0934159019bf303aa6b0de4db9a2727

SHA1
6d54f17021668dc5dce826c7ef77eb3782d140d1

SHA256
347b760f5ce478358512ef79cf7be46a7e9c2f6157e9693f4a2e4cba3cbc0165

SHA512
ea344cbf8d6b482ee8307d2b69daeb4573e4e244038bf62c32dd18074e1e16eabbb02780cca1d9ba3af26ab32a4be32e18ea320b4b4bc3b7d52898512dbcbef0

Download Submit
memory/2008-16-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/2008-19-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/2008-14-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/2008-8-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/3708-15-0x0000000000F80000-0x0000000000F95000-memory.dmp

Filesize
84KB

Download
memory/3708-12-0x0000000000F80000-0x0000000000F95000-memory.dmp

Filesize
84KB

Download
memory/3708-17-0x0000000000F80000-0x0000000000F95000-memory.dmp

Filesize
84KB

Download
memory/4756-1-0x00000000008B0000-0x00000000009B0000-memory.dmp

Filesize
1024KB

Download
memory/4756-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4756-11-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4756-10-0x0000000000A20000-0x0000000000A33000-memory.dmp

Filesize
76KB

Download
memory/4756-9-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/4756-2-0x0000000000A20000-0x0000000000A33000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads