tofsee | 39177e8c1255444d714f716028f324d346c3f9ce13e99554ef9a56a9094bdf58

General

Target

5d1470caf0cf10f682be43586f909f62_JaffaCakes118.exe
Size

14.7MB
MD5

5d1470caf0cf10f682be43586f909f62
SHA1

8b8e686d21ff3277ce86d9b5f9475eff108875ff
SHA256

39177e8c1255444d714f716028f324d346c3f9ce13e99554ef9a56a9094bdf58
SHA512

c265fee6d74bfaaacd05f790e2f6863362be0f112b2d6deb58803502500a536b5b6ef24b90b8d30732acb4f3f635c69d1ea38282d900d7422cf7b6f1c6e4d174
SSDEEP

24576:Pgdy5yNM4444444444444444444444444444444444444444444444444444444g:

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

Processes:

netsh.exe

pid process

5020 netsh.exe

pid	process
5020	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\rzmqyiie\ImagePath = "C:\\Windows\\SysWOW64\\rzmqyiie\\yppiyxym.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

Processes:

5d1470caf0cf10f682be43586f909f62_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	5d1470caf0cf10f682be43586f909f62_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

444 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

yppiyxym.exe

pid process

4840 yppiyxym.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

yppiyxym.exe

description pid process target process

PID 4840 set thread context of 444 4840 yppiyxym.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

2380 sc.exe
1800 sc.exe
1012 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
444	svchost.exe

pid	process
4840	yppiyxym.exe

description	pid	process	target process
PID 4840 set thread context of 444	4840	yppiyxym.exe	svchost.exe

pid	process
2380	sc.exe
1800	sc.exe
1012	sc.exe

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

Processes:

netsh.exe

description	ioc	process
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

4720 3156 WerFault.exe 5d1470caf0cf10f682be43586f909f62_JaffaCakes118.exe
2440 4840 WerFault.exe yppiyxym.exe

pid	pid_target	process	target process
4720	3156	WerFault.exe	5d1470caf0cf10f682be43586f909f62_JaffaCakes118.exe
2440	4840	WerFault.exe	yppiyxym.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

Processes:

5d1470caf0cf10f682be43586f909f62_JaffaCakes118.execmd.exenetsh.exesc.exeyppiyxym.exesvchost.execmd.exesc.exesc.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5d1470caf0cf10f682be43586f909f62_JaffaCakes118.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	yppiyxym.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

5d1470caf0cf10f682be43586f909f62_JaffaCakes118.exeyppiyxym.exe

description	pid	process	target process
PID 3156 wrote to memory of 2004	3156	5d1470caf0cf10f682be43586f909f62_JaffaCakes118.exe	cmd.exe
PID 3156 wrote to memory of 2004	3156	5d1470caf0cf10f682be43586f909f62_JaffaCakes118.exe	cmd.exe
PID 3156 wrote to memory of 2004	3156	5d1470caf0cf10f682be43586f909f62_JaffaCakes118.exe	cmd.exe
PID 3156 wrote to memory of 3724	3156	5d1470caf0cf10f682be43586f909f62_JaffaCakes118.exe	cmd.exe
PID 3156 wrote to memory of 3724	3156	5d1470caf0cf10f682be43586f909f62_JaffaCakes118.exe	cmd.exe
PID 3156 wrote to memory of 3724	3156	5d1470caf0cf10f682be43586f909f62_JaffaCakes118.exe	cmd.exe
PID 3156 wrote to memory of 2380	3156	5d1470caf0cf10f682be43586f909f62_JaffaCakes118.exe	sc.exe
PID 3156 wrote to memory of 2380	3156	5d1470caf0cf10f682be43586f909f62_JaffaCakes118.exe	sc.exe
PID 3156 wrote to memory of 2380	3156	5d1470caf0cf10f682be43586f909f62_JaffaCakes118.exe	sc.exe
PID 3156 wrote to memory of 1800	3156	5d1470caf0cf10f682be43586f909f62_JaffaCakes118.exe	sc.exe
PID 3156 wrote to memory of 1800	3156	5d1470caf0cf10f682be43586f909f62_JaffaCakes118.exe	sc.exe
PID 3156 wrote to memory of 1800	3156	5d1470caf0cf10f682be43586f909f62_JaffaCakes118.exe	sc.exe
PID 3156 wrote to memory of 1012	3156	5d1470caf0cf10f682be43586f909f62_JaffaCakes118.exe	sc.exe
PID 3156 wrote to memory of 1012	3156	5d1470caf0cf10f682be43586f909f62_JaffaCakes118.exe	sc.exe
PID 3156 wrote to memory of 1012	3156	5d1470caf0cf10f682be43586f909f62_JaffaCakes118.exe	sc.exe
PID 3156 wrote to memory of 5020	3156	5d1470caf0cf10f682be43586f909f62_JaffaCakes118.exe	netsh.exe
PID 3156 wrote to memory of 5020	3156	5d1470caf0cf10f682be43586f909f62_JaffaCakes118.exe	netsh.exe
PID 3156 wrote to memory of 5020	3156	5d1470caf0cf10f682be43586f909f62_JaffaCakes118.exe	netsh.exe
PID 4840 wrote to memory of 444	4840	yppiyxym.exe	svchost.exe
PID 4840 wrote to memory of 444	4840	yppiyxym.exe	svchost.exe
PID 4840 wrote to memory of 444	4840	yppiyxym.exe	svchost.exe
PID 4840 wrote to memory of 444	4840	yppiyxym.exe	svchost.exe
PID 4840 wrote to memory of 444	4840	yppiyxym.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\5d1470caf0cf10f682be43586f909f62_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\5d1470caf0cf10f682be43586f909f62_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3156
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rzmqyiie\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2004
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\yppiyxym.exe" C:\Windows\SysWOW64\rzmqyiie\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3724
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create rzmqyiie binPath= "C:\Windows\SysWOW64\rzmqyiie\yppiyxym.exe /d\"C:\Users\Admin\AppData\Local\Temp\5d1470caf0cf10f682be43586f909f62_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2380
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description rzmqyiie "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1800
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start rzmqyiie
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1012
- 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:5020
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3156 -s 1200
  2⤵
  - Program crash
  PID:4720

C:\Windows\SysWOW64\rzmqyiie\yppiyxym.exe
C:\Windows\SysWOW64\rzmqyiie\yppiyxym.exe /d"C:\Users\Admin\AppData\Local\Temp\5d1470caf0cf10f682be43586f909f62_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4840
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:444
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4840 -s 512
  2⤵
  - Program crash
  PID:2440

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3156 -ip 3156
1⤵
PID:1064

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4840 -ip 4840
1⤵
PID:1296

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\yppiyxym.exe

Filesize
11.2MB

MD5
1c3dcaddf5f19d84fab2388f0425941e

SHA1
9a33d50ed4612323cca201e17a1daaf3889535aa

SHA256
ed52d8c39b734378fd900a738b08a2bac7fa9ac2598779f8d83430e7fcaa7f09

SHA512
425502169a75d7cfb583a74e42e3aaa96c457ecfb0bcf1bd6157fb1f3ba26e75316c293a28650708c44ea9ec4eaa3e45baaf759e35ae8e5e3c2294c98ff91a1c

Download Submit
memory/444-14-0x0000000000E50000-0x0000000000E65000-memory.dmp

Filesize
84KB

Download
memory/444-17-0x0000000000E50000-0x0000000000E65000-memory.dmp

Filesize
84KB

Download
memory/444-16-0x0000000000E50000-0x0000000000E65000-memory.dmp

Filesize
84KB

Download
memory/3156-8-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/3156-9-0x00000000021B0000-0x00000000021C3000-memory.dmp

Filesize
76KB

Download
memory/3156-1-0x0000000000610000-0x0000000000710000-memory.dmp

Filesize
1024KB

Download
memory/3156-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3156-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3156-2-0x00000000021B0000-0x00000000021C3000-memory.dmp

Filesize
76KB

Download
memory/4840-12-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/4840-11-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/4840-13-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/4840-19-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads