tofsee | 4c681413678d6527aaf91c2076ad2751ed04844363d496688de68c14529d184a

General

Target

JaffaCakes118_4c681413678d6527aaf91c2076ad2751ed04844363d496688de68c14529d184a.exe
Size

285KB
MD5

eb0b11f7105206a3e7b2ad98b7a9fbf4
SHA1

bb314c002e1485eae7a44af5f6f0508161be8f8b
SHA256

4c681413678d6527aaf91c2076ad2751ed04844363d496688de68c14529d184a
SHA512

dd7af74ca4383110df6c67598fa3294579f42cc8fe4e9ff85d357d632bc23bdff86a40c18ef6e3706fe1a090e08d763f325afbf92dff16ce3888b68c48bdd951
SSDEEP

6144:C2FMBDEA1/ABFbOM56KUCf/w8lv/IZu5F:C2FMBDB1/YbOcUm/5IZur

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
1616	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\zywmpeew\ImagePath = "C:\\Windows\\SysWOW64\\zywmpeew\\kwrovuui.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_4c681413678d6527aaf91c2076ad2751ed04844363d496688de68c14529d184a.exe

Deletes itself 1 IoCs

pid	Process
2044	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2968	kwrovuui.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2968 set thread context of 2044	2968	kwrovuui.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
3396	sc.exe
3600	sc.exe
676	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
2148	3316	WerFault.exe	81
1364	2968	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	svchost.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	kwrovuui.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4c681413678d6527aaf91c2076ad2751ed04844363d496688de68c14529d184a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3316 wrote to memory of 3104	3316	JaffaCakes118_4c681413678d6527aaf91c2076ad2751ed04844363d496688de68c14529d184a.exe	82
PID 3316 wrote to memory of 3104	3316	JaffaCakes118_4c681413678d6527aaf91c2076ad2751ed04844363d496688de68c14529d184a.exe	82
PID 3316 wrote to memory of 3104	3316	JaffaCakes118_4c681413678d6527aaf91c2076ad2751ed04844363d496688de68c14529d184a.exe	82
PID 3316 wrote to memory of 1356	3316	JaffaCakes118_4c681413678d6527aaf91c2076ad2751ed04844363d496688de68c14529d184a.exe	84
PID 3316 wrote to memory of 1356	3316	JaffaCakes118_4c681413678d6527aaf91c2076ad2751ed04844363d496688de68c14529d184a.exe	84
PID 3316 wrote to memory of 1356	3316	JaffaCakes118_4c681413678d6527aaf91c2076ad2751ed04844363d496688de68c14529d184a.exe	84
PID 3316 wrote to memory of 3396	3316	JaffaCakes118_4c681413678d6527aaf91c2076ad2751ed04844363d496688de68c14529d184a.exe	86
PID 3316 wrote to memory of 3396	3316	JaffaCakes118_4c681413678d6527aaf91c2076ad2751ed04844363d496688de68c14529d184a.exe	86
PID 3316 wrote to memory of 3396	3316	JaffaCakes118_4c681413678d6527aaf91c2076ad2751ed04844363d496688de68c14529d184a.exe	86
PID 3316 wrote to memory of 3600	3316	JaffaCakes118_4c681413678d6527aaf91c2076ad2751ed04844363d496688de68c14529d184a.exe	88
PID 3316 wrote to memory of 3600	3316	JaffaCakes118_4c681413678d6527aaf91c2076ad2751ed04844363d496688de68c14529d184a.exe	88
PID 3316 wrote to memory of 3600	3316	JaffaCakes118_4c681413678d6527aaf91c2076ad2751ed04844363d496688de68c14529d184a.exe	88
PID 3316 wrote to memory of 676	3316	JaffaCakes118_4c681413678d6527aaf91c2076ad2751ed04844363d496688de68c14529d184a.exe	90
PID 3316 wrote to memory of 676	3316	JaffaCakes118_4c681413678d6527aaf91c2076ad2751ed04844363d496688de68c14529d184a.exe	90
PID 3316 wrote to memory of 676	3316	JaffaCakes118_4c681413678d6527aaf91c2076ad2751ed04844363d496688de68c14529d184a.exe	90
PID 3316 wrote to memory of 1616	3316	JaffaCakes118_4c681413678d6527aaf91c2076ad2751ed04844363d496688de68c14529d184a.exe	93
PID 3316 wrote to memory of 1616	3316	JaffaCakes118_4c681413678d6527aaf91c2076ad2751ed04844363d496688de68c14529d184a.exe	93
PID 3316 wrote to memory of 1616	3316	JaffaCakes118_4c681413678d6527aaf91c2076ad2751ed04844363d496688de68c14529d184a.exe	93
PID 2968 wrote to memory of 2044	2968	kwrovuui.exe	98
PID 2968 wrote to memory of 2044	2968	kwrovuui.exe	98
PID 2968 wrote to memory of 2044	2968	kwrovuui.exe	98
PID 2968 wrote to memory of 2044	2968	kwrovuui.exe	98
PID 2968 wrote to memory of 2044	2968	kwrovuui.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4c681413678d6527aaf91c2076ad2751ed04844363d496688de68c14529d184a.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4c681413678d6527aaf91c2076ad2751ed04844363d496688de68c14529d184a.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3316
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zywmpeew\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3104
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kwrovuui.exe" C:\Windows\SysWOW64\zywmpeew\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1356
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create zywmpeew binPath= "C:\Windows\SysWOW64\zywmpeew\kwrovuui.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4c681413678d6527aaf91c2076ad2751ed04844363d496688de68c14529d184a.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3396
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description zywmpeew "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3600
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start zywmpeew
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:676
- 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:1616
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3316 -s 652
  2⤵
  - Program crash
  PID:2148

C:\Windows\SysWOW64\zywmpeew\kwrovuui.exe
C:\Windows\SysWOW64\zywmpeew\kwrovuui.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4c681413678d6527aaf91c2076ad2751ed04844363d496688de68c14529d184a.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2968
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2044
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2968 -s 512
  2⤵
  - Program crash
  PID:1364

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3316 -ip 3316
1⤵
PID:4088

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 2968 -ip 2968
1⤵
PID:812

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\kwrovuui.exe

Filesize
14.7MB

MD5
439725bec7955fdc705d879ce0f6d9b9

SHA1
b1b454f32c0a51f7c8ce9e5989d00886f075d4f9

SHA256
8b367f84b5857ded0da10aef62a556f881c5ce0dc75d85d9923c69d421a9a81a

SHA512
9ec5c6edc1c777c900aebc155d7eaf18aed3f2db9820503208131199936b400d7de0aad4682d271b146b84c22c9bcce2dd795243404ee7976e92f48188364244

Download Submit
memory/2044-11-0x0000000000850000-0x0000000000865000-memory.dmp

Filesize
84KB

Download
memory/2044-13-0x0000000000850000-0x0000000000865000-memory.dmp

Filesize
84KB

Download
memory/2044-14-0x0000000000850000-0x0000000000865000-memory.dmp

Filesize
84KB

Download
memory/2968-15-0x0000000000400000-0x0000000002B8F000-memory.dmp

Filesize
39.6MB

Download
memory/3316-1-0x0000000002BF0000-0x0000000002CF0000-memory.dmp

Filesize
1024KB

Download
memory/3316-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3316-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3316-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3316-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3316-8-0x0000000000400000-0x0000000002B8F000-memory.dmp

Filesize
39.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads