tofsee | 7297e37f154cbba0033e436607249b89d8cf3ed1782232754723f91bcf390b75

General

Target

JaffaCakes118_7297e37f154cbba0033e436607249b89d8cf3ed1782232754723f91bcf390b75.exe
Size

284KB
MD5

8ad22c2fc953146a7ebfbd4e7b92e8dc
SHA1

19f1b548b0c073387cce1e2aa4b27e1b20f41b12
SHA256

7297e37f154cbba0033e436607249b89d8cf3ed1782232754723f91bcf390b75
SHA512

1ee75b4fa9c89f94783fb65eeb8a88ba6a62d5543933e1b996bab8d050961fc3d135e9044d17680b9bd381ea2ad0b4ec0f3834d1014c16e46b0d1920dc377d75
SSDEEP

6144:mo7WDeIh7kIMrEpz5kgQYwwr6dYHhSXuZet0yS8/YBtrG2i15ioo9vPDiT:MbiISEnZQYw46dYHhSXuZet0yS8/iGFv

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.ru

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
4980	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\corhgupv\ImagePath = "C:\\Windows\\SysWOW64\\corhgupv\\bqvwqybu.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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	JaffaCakes118_7297e37f154cbba0033e436607249b89d8cf3ed1782232754723f91bcf390b75.exe

Deletes itself 1 IoCs

pid	Process
3340	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3188	bqvwqybu.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3188 set thread context of 3340	3188	bqvwqybu.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
220	sc.exe
4832	sc.exe
3048	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
3440	4616	WerFault.exe	81
5092	3188	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_7297e37f154cbba0033e436607249b89d8cf3ed1782232754723f91bcf390b75.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	bqvwqybu.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4616 wrote to memory of 4584	4616	JaffaCakes118_7297e37f154cbba0033e436607249b89d8cf3ed1782232754723f91bcf390b75.exe	82
PID 4616 wrote to memory of 4584	4616	JaffaCakes118_7297e37f154cbba0033e436607249b89d8cf3ed1782232754723f91bcf390b75.exe	82
PID 4616 wrote to memory of 4584	4616	JaffaCakes118_7297e37f154cbba0033e436607249b89d8cf3ed1782232754723f91bcf390b75.exe	82
PID 4616 wrote to memory of 3664	4616	JaffaCakes118_7297e37f154cbba0033e436607249b89d8cf3ed1782232754723f91bcf390b75.exe	84
PID 4616 wrote to memory of 3664	4616	JaffaCakes118_7297e37f154cbba0033e436607249b89d8cf3ed1782232754723f91bcf390b75.exe	84
PID 4616 wrote to memory of 3664	4616	JaffaCakes118_7297e37f154cbba0033e436607249b89d8cf3ed1782232754723f91bcf390b75.exe	84
PID 4616 wrote to memory of 4832	4616	JaffaCakes118_7297e37f154cbba0033e436607249b89d8cf3ed1782232754723f91bcf390b75.exe	86
PID 4616 wrote to memory of 4832	4616	JaffaCakes118_7297e37f154cbba0033e436607249b89d8cf3ed1782232754723f91bcf390b75.exe	86
PID 4616 wrote to memory of 4832	4616	JaffaCakes118_7297e37f154cbba0033e436607249b89d8cf3ed1782232754723f91bcf390b75.exe	86
PID 4616 wrote to memory of 3048	4616	JaffaCakes118_7297e37f154cbba0033e436607249b89d8cf3ed1782232754723f91bcf390b75.exe	88
PID 4616 wrote to memory of 3048	4616	JaffaCakes118_7297e37f154cbba0033e436607249b89d8cf3ed1782232754723f91bcf390b75.exe	88
PID 4616 wrote to memory of 3048	4616	JaffaCakes118_7297e37f154cbba0033e436607249b89d8cf3ed1782232754723f91bcf390b75.exe	88
PID 4616 wrote to memory of 220	4616	JaffaCakes118_7297e37f154cbba0033e436607249b89d8cf3ed1782232754723f91bcf390b75.exe	90
PID 4616 wrote to memory of 220	4616	JaffaCakes118_7297e37f154cbba0033e436607249b89d8cf3ed1782232754723f91bcf390b75.exe	90
PID 4616 wrote to memory of 220	4616	JaffaCakes118_7297e37f154cbba0033e436607249b89d8cf3ed1782232754723f91bcf390b75.exe	90
PID 4616 wrote to memory of 4980	4616	JaffaCakes118_7297e37f154cbba0033e436607249b89d8cf3ed1782232754723f91bcf390b75.exe	93
PID 4616 wrote to memory of 4980	4616	JaffaCakes118_7297e37f154cbba0033e436607249b89d8cf3ed1782232754723f91bcf390b75.exe	93
PID 4616 wrote to memory of 4980	4616	JaffaCakes118_7297e37f154cbba0033e436607249b89d8cf3ed1782232754723f91bcf390b75.exe	93
PID 3188 wrote to memory of 3340	3188	bqvwqybu.exe	98
PID 3188 wrote to memory of 3340	3188	bqvwqybu.exe	98
PID 3188 wrote to memory of 3340	3188	bqvwqybu.exe	98
PID 3188 wrote to memory of 3340	3188	bqvwqybu.exe	98
PID 3188 wrote to memory of 3340	3188	bqvwqybu.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7297e37f154cbba0033e436607249b89d8cf3ed1782232754723f91bcf390b75.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7297e37f154cbba0033e436607249b89d8cf3ed1782232754723f91bcf390b75.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4616
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\corhgupv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4584
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bqvwqybu.exe" C:\Windows\SysWOW64\corhgupv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3664
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create corhgupv binPath= "C:\Windows\SysWOW64\corhgupv\bqvwqybu.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7297e37f154cbba0033e436607249b89d8cf3ed1782232754723f91bcf390b75.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4832
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description corhgupv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3048
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start corhgupv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:220
- 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:4980
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4616 -s 1276
  2⤵
  - Program crash
  PID:3440

C:\Windows\SysWOW64\corhgupv\bqvwqybu.exe
C:\Windows\SysWOW64\corhgupv\bqvwqybu.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7297e37f154cbba0033e436607249b89d8cf3ed1782232754723f91bcf390b75.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3188
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3340
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3188 -s 520
  2⤵
  - Program crash
  PID:5092

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4616 -ip 4616
1⤵
PID:4212

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 3188 -ip 3188
1⤵
PID:4052

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\bqvwqybu.exe

Filesize
13.3MB

MD5
dc2531983ac1deff5a179f9fdfe936af

SHA1
2ae23c9d27a48f1be7906d3a558be7c0f549e001

SHA256
c906a69e4808bd5d56cf052f33e38a1bcc27eb206cd07504cb30e4e532ac08d0

SHA512
60524c1f4c347608b524ec2abc2c4c927864b62766f436495c0220d4cb22b953d2a89c85a6e0906ade1b6d0def29a065a25f9b633fe74e81b7413f36528f492a

Download Submit
memory/3188-15-0x0000000000400000-0x0000000001BFD000-memory.dmp

Filesize
24.0MB

Download
memory/3340-11-0x0000000000730000-0x0000000000745000-memory.dmp

Filesize
84KB

Download
memory/3340-13-0x0000000000730000-0x0000000000745000-memory.dmp

Filesize
84KB

Download
memory/3340-14-0x0000000000730000-0x0000000000745000-memory.dmp

Filesize
84KB

Download
memory/4616-1-0x0000000001F00000-0x0000000002000000-memory.dmp

Filesize
1024KB

Download
memory/4616-2-0x0000000001EA0000-0x0000000001EB3000-memory.dmp

Filesize
76KB

Download
memory/4616-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4616-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4616-8-0x0000000001EA0000-0x0000000001EB3000-memory.dmp

Filesize
76KB

Download
memory/4616-7-0x0000000000400000-0x0000000001BFD000-memory.dmp

Filesize
24.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads