tofsee | 6a56b41ceccdc929ee57b32c75f555ccab69deb4e46dc37abf6650d477a96708

General

Target

JaffaCakes118_6a56b41ceccdc929ee57b32c75f555ccab69deb4e46dc37abf6650d477a96708.exe
Size

138KB
MD5

cdb1e2cb6739f193391b6cb9b1ca1041
SHA1

c125ffa0af699f6b761a787a4dbc653fd8a26c9d
SHA256

6a56b41ceccdc929ee57b32c75f555ccab69deb4e46dc37abf6650d477a96708
SHA512

e285535a2a351ae98d6f75d7277a4521f353a6d8f3450b4ba1c86032db9b1e604cf9e3b24293a3c30b40563a15b494c943c24783b06cdbba4ec5d75eb7dc5912
SSDEEP

1536:gB0hlXF9aPJf1cNZXQdRUIE6xEhGT2awEkLaBZhXRqk5ksw+CEZ+UONiU+g0n:aAUKHAxAhCaEkLALBqk55PdZ7giZ

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
1916	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\eaedrnj\ImagePath = "C:\\Windows\\SysWOW64\\eaedrnj\\uxqywygq.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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	JaffaCakes118_6a56b41ceccdc929ee57b32c75f555ccab69deb4e46dc37abf6650d477a96708.exe

Deletes itself 1 IoCs

pid	Process
3660	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3716	uxqywygq.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3716 set thread context of 3660	3716	uxqywygq.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
876	sc.exe
4132	sc.exe
4312	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
3260	1748	WerFault.exe	82
4040	3716	WerFault.exe	93

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_6a56b41ceccdc929ee57b32c75f555ccab69deb4e46dc37abf6650d477a96708.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	uxqywygq.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1748 wrote to memory of 1224	1748	JaffaCakes118_6a56b41ceccdc929ee57b32c75f555ccab69deb4e46dc37abf6650d477a96708.exe	83
PID 1748 wrote to memory of 1224	1748	JaffaCakes118_6a56b41ceccdc929ee57b32c75f555ccab69deb4e46dc37abf6650d477a96708.exe	83
PID 1748 wrote to memory of 1224	1748	JaffaCakes118_6a56b41ceccdc929ee57b32c75f555ccab69deb4e46dc37abf6650d477a96708.exe	83
PID 1748 wrote to memory of 2040	1748	JaffaCakes118_6a56b41ceccdc929ee57b32c75f555ccab69deb4e46dc37abf6650d477a96708.exe	85
PID 1748 wrote to memory of 2040	1748	JaffaCakes118_6a56b41ceccdc929ee57b32c75f555ccab69deb4e46dc37abf6650d477a96708.exe	85
PID 1748 wrote to memory of 2040	1748	JaffaCakes118_6a56b41ceccdc929ee57b32c75f555ccab69deb4e46dc37abf6650d477a96708.exe	85
PID 1748 wrote to memory of 876	1748	JaffaCakes118_6a56b41ceccdc929ee57b32c75f555ccab69deb4e46dc37abf6650d477a96708.exe	87
PID 1748 wrote to memory of 876	1748	JaffaCakes118_6a56b41ceccdc929ee57b32c75f555ccab69deb4e46dc37abf6650d477a96708.exe	87
PID 1748 wrote to memory of 876	1748	JaffaCakes118_6a56b41ceccdc929ee57b32c75f555ccab69deb4e46dc37abf6650d477a96708.exe	87
PID 1748 wrote to memory of 4132	1748	JaffaCakes118_6a56b41ceccdc929ee57b32c75f555ccab69deb4e46dc37abf6650d477a96708.exe	89
PID 1748 wrote to memory of 4132	1748	JaffaCakes118_6a56b41ceccdc929ee57b32c75f555ccab69deb4e46dc37abf6650d477a96708.exe	89
PID 1748 wrote to memory of 4132	1748	JaffaCakes118_6a56b41ceccdc929ee57b32c75f555ccab69deb4e46dc37abf6650d477a96708.exe	89
PID 1748 wrote to memory of 4312	1748	JaffaCakes118_6a56b41ceccdc929ee57b32c75f555ccab69deb4e46dc37abf6650d477a96708.exe	91
PID 1748 wrote to memory of 4312	1748	JaffaCakes118_6a56b41ceccdc929ee57b32c75f555ccab69deb4e46dc37abf6650d477a96708.exe	91
PID 1748 wrote to memory of 4312	1748	JaffaCakes118_6a56b41ceccdc929ee57b32c75f555ccab69deb4e46dc37abf6650d477a96708.exe	91
PID 1748 wrote to memory of 1916	1748	JaffaCakes118_6a56b41ceccdc929ee57b32c75f555ccab69deb4e46dc37abf6650d477a96708.exe	94
PID 1748 wrote to memory of 1916	1748	JaffaCakes118_6a56b41ceccdc929ee57b32c75f555ccab69deb4e46dc37abf6650d477a96708.exe	94
PID 1748 wrote to memory of 1916	1748	JaffaCakes118_6a56b41ceccdc929ee57b32c75f555ccab69deb4e46dc37abf6650d477a96708.exe	94
PID 3716 wrote to memory of 3660	3716	uxqywygq.exe	100
PID 3716 wrote to memory of 3660	3716	uxqywygq.exe	100
PID 3716 wrote to memory of 3660	3716	uxqywygq.exe	100
PID 3716 wrote to memory of 3660	3716	uxqywygq.exe	100
PID 3716 wrote to memory of 3660	3716	uxqywygq.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6a56b41ceccdc929ee57b32c75f555ccab69deb4e46dc37abf6650d477a96708.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6a56b41ceccdc929ee57b32c75f555ccab69deb4e46dc37abf6650d477a96708.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1748
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\eaedrnj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1224
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\uxqywygq.exe" C:\Windows\SysWOW64\eaedrnj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2040
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create eaedrnj binPath= "C:\Windows\SysWOW64\eaedrnj\uxqywygq.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6a56b41ceccdc929ee57b32c75f555ccab69deb4e46dc37abf6650d477a96708.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:876
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description eaedrnj "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4132
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start eaedrnj
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4312
- 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:1916
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1748 -s 1028
  2⤵
  - Program crash
  PID:3260

C:\Windows\SysWOW64\eaedrnj\uxqywygq.exe
C:\Windows\SysWOW64\eaedrnj\uxqywygq.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6a56b41ceccdc929ee57b32c75f555ccab69deb4e46dc37abf6650d477a96708.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3716
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3660
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3716 -s 552
  2⤵
  - Program crash
  PID:4040

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1748 -ip 1748
1⤵
PID:3212

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 3716 -ip 3716
1⤵
PID:3372

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\uxqywygq.exe

Filesize
14.9MB

MD5
c1aa7bd319909d68e849b1809074daae

SHA1
9062563c5070698125edcd4588bf89d07273f153

SHA256
cfba49cc21cab0146131c9e036174190ea0a0ec49596e37e1734f4c8f3ed7b0a

SHA512
101e044c2a14f9ba440e02696ede4b49d3d2ed9724ab5e55fe40f402706cd7717012692408e3de10e33429d160037db17bd0b1ab11304c3603ffb9571975f78d

Download Submit
memory/1748-9-0x00000000021F0000-0x0000000002203000-memory.dmp

Filesize
76KB

Download
memory/1748-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1748-2-0x00000000021F0000-0x0000000002203000-memory.dmp

Filesize
76KB

Download
memory/1748-8-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/1748-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1748-1-0x00000000004C0000-0x00000000005C0000-memory.dmp

Filesize
1024KB

Download
memory/3660-14-0x0000000000780000-0x0000000000795000-memory.dmp

Filesize
84KB

Download
memory/3660-16-0x0000000000780000-0x0000000000795000-memory.dmp

Filesize
84KB

Download
memory/3660-17-0x0000000000780000-0x0000000000795000-memory.dmp

Filesize
84KB

Download
memory/3716-11-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/3716-12-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/3716-13-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/3716-19-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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