tofsee | 1fed49beb1c305310c18e449393936b58f59bd9855df4d7c7ca20eb9e7f31a71

General

Target

JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe
Size

10.6MB
MD5

a8d65709b6c6aafab9e360448ce84fd5
SHA1

983680d1f9a85ab0497513062db3a0220bff7c67
SHA256

1fed49beb1c305310c18e449393936b58f59bd9855df4d7c7ca20eb9e7f31a71
SHA512

54af1429968c82b240c9f70e4d4e08fb61fe41c7064f36c86303e776d71efd6f09f5d6ec418bff84d94a2a8132e25bf2adfa2ec0f2e1a645765ebc1a2ecad5b2
SSDEEP

6144:jeaRFeYiZtnsLs/Xyihb124uKPoifbY/3sGIU5N5:jF7/iZtRXpu3ijwf5T

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
3492	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\uuivnnbr\ImagePath = "C:\\Windows\\SysWOW64\\uuivnnbr\\qfsoazse.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_a8d65709b6c6aafab9e360448ce84fd5.exe

Deletes itself 1 IoCs

pid	Process
3064	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4100	qfsoazse.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4100 set thread context of 3064	4100	qfsoazse.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
3708	sc.exe
3168	sc.exe
1228	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
4500	64	WerFault.exe	82
4468	4100	WerFault.exe	94

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	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.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	qfsoazse.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 64 wrote to memory of 880	64	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	83
PID 64 wrote to memory of 880	64	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	83
PID 64 wrote to memory of 880	64	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	83
PID 64 wrote to memory of 3264	64	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	85
PID 64 wrote to memory of 3264	64	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	85
PID 64 wrote to memory of 3264	64	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	85
PID 64 wrote to memory of 3708	64	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	87
PID 64 wrote to memory of 3708	64	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	87
PID 64 wrote to memory of 3708	64	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	87
PID 64 wrote to memory of 3168	64	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	90
PID 64 wrote to memory of 3168	64	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	90
PID 64 wrote to memory of 3168	64	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	90
PID 64 wrote to memory of 1228	64	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	92
PID 64 wrote to memory of 1228	64	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	92
PID 64 wrote to memory of 1228	64	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	92
PID 64 wrote to memory of 3492	64	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	95
PID 64 wrote to memory of 3492	64	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	95
PID 64 wrote to memory of 3492	64	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	95
PID 4100 wrote to memory of 3064	4100	qfsoazse.exe	101
PID 4100 wrote to memory of 3064	4100	qfsoazse.exe	101
PID 4100 wrote to memory of 3064	4100	qfsoazse.exe	101
PID 4100 wrote to memory of 3064	4100	qfsoazse.exe	101
PID 4100 wrote to memory of 3064	4100	qfsoazse.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:64
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\uuivnnbr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:880
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\qfsoazse.exe" C:\Windows\SysWOW64\uuivnnbr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3264
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create uuivnnbr binPath= "C:\Windows\SysWOW64\uuivnnbr\qfsoazse.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3708
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description uuivnnbr "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3168
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start uuivnnbr
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1228
- 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:3492
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 64 -s 1180
  2⤵
  - Program crash
  PID:4500

C:\Windows\SysWOW64\uuivnnbr\qfsoazse.exe
C:\Windows\SysWOW64\uuivnnbr\qfsoazse.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4100
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3064
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4100 -s 508
  2⤵
  - Program crash
  PID:4468

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 64 -ip 64
1⤵
PID:4868

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 4100 -ip 4100
1⤵
PID:2796

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\qfsoazse.exe

Filesize
11.1MB

MD5
b2bd9c42e86daf00b6e4c3c6c40ca686

SHA1
7d02bf9eeb1bc5f11c2ab060458ebec7e73f866a

SHA256
e7563e5e3406878d1f60385ab97a4d22dbe57237eca6ee2150dad6aff67b5ca5

SHA512
9b1e5faa5a1c4cee2bdb809cca4211936cc058f5c1f17c1d9ae36d3e737a1e02cb8f8b24ffe3e53322ae0795e970169455106a7350b688f388d6ef7bc7937e26

Download Submit
memory/64-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/64-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/64-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/64-8-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/64-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/64-1-0x0000000000AB0000-0x0000000000BB0000-memory.dmp

Filesize
1024KB

Download
memory/3064-16-0x0000000000F30000-0x0000000000F45000-memory.dmp

Filesize
84KB

Download
memory/3064-13-0x0000000000F30000-0x0000000000F45000-memory.dmp

Filesize
84KB

Download
memory/3064-17-0x0000000000F30000-0x0000000000F45000-memory.dmp

Filesize
84KB

Download
memory/4100-11-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/4100-12-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/4100-14-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/4100-19-0x0000000000400000-0x000000000086B000-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