tofsee | 4e370c11ec3d5490a4f08c8f25219cd96b3098e619380317bf92d04e8374ebf2

General

Target

JaffaCakes118_4e370c11ec3d5490a4f08c8f25219cd96b3098e619380317bf92d04e8374ebf2.exe
Size

146KB
MD5

f5339fab992d8d5dc0e4106fb8b5b899
SHA1

cf0665860499961a9f5e1ef8d878b79684f8dca2
SHA256

4e370c11ec3d5490a4f08c8f25219cd96b3098e619380317bf92d04e8374ebf2
SHA512

22f068ada213227ac68c9d285331a0bbb82284c9dd73314a0df8bd5d9e5cf467c655efb3bf62d67ef5eef218b2b517c2b83e6e861476524dcd431cf4f164e370
SSDEEP

3072:yMh6zd/diHv43x+rCV5EJLMhxZG/qfPJA5FHJATz:yg6R/dkv43GCP8tqf+5FGP

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
3428	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\kmgcxwr\ImagePath = "C:\\Windows\\SysWOW64\\kmgcxwr\\ybucacku.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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	JaffaCakes118_4e370c11ec3d5490a4f08c8f25219cd96b3098e619380317bf92d04e8374ebf2.exe

Deletes itself 1 IoCs

pid	Process
100	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
5076	ybucacku.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5076 set thread context of 100	5076	ybucacku.exe	96

Launches sc.exe 3 IoCs

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

pid	Process
2520	sc.exe
4224	sc.exe
3200	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

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	ybucacku.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4e370c11ec3d5490a4f08c8f25219cd96b3098e619380317bf92d04e8374ebf2.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3420 wrote to memory of 1436	3420	JaffaCakes118_4e370c11ec3d5490a4f08c8f25219cd96b3098e619380317bf92d04e8374ebf2.exe	83
PID 3420 wrote to memory of 1436	3420	JaffaCakes118_4e370c11ec3d5490a4f08c8f25219cd96b3098e619380317bf92d04e8374ebf2.exe	83
PID 3420 wrote to memory of 1436	3420	JaffaCakes118_4e370c11ec3d5490a4f08c8f25219cd96b3098e619380317bf92d04e8374ebf2.exe	83
PID 3420 wrote to memory of 1400	3420	JaffaCakes118_4e370c11ec3d5490a4f08c8f25219cd96b3098e619380317bf92d04e8374ebf2.exe	85
PID 3420 wrote to memory of 1400	3420	JaffaCakes118_4e370c11ec3d5490a4f08c8f25219cd96b3098e619380317bf92d04e8374ebf2.exe	85
PID 3420 wrote to memory of 1400	3420	JaffaCakes118_4e370c11ec3d5490a4f08c8f25219cd96b3098e619380317bf92d04e8374ebf2.exe	85
PID 3420 wrote to memory of 2520	3420	JaffaCakes118_4e370c11ec3d5490a4f08c8f25219cd96b3098e619380317bf92d04e8374ebf2.exe	87
PID 3420 wrote to memory of 2520	3420	JaffaCakes118_4e370c11ec3d5490a4f08c8f25219cd96b3098e619380317bf92d04e8374ebf2.exe	87
PID 3420 wrote to memory of 2520	3420	JaffaCakes118_4e370c11ec3d5490a4f08c8f25219cd96b3098e619380317bf92d04e8374ebf2.exe	87
PID 3420 wrote to memory of 4224	3420	JaffaCakes118_4e370c11ec3d5490a4f08c8f25219cd96b3098e619380317bf92d04e8374ebf2.exe	89
PID 3420 wrote to memory of 4224	3420	JaffaCakes118_4e370c11ec3d5490a4f08c8f25219cd96b3098e619380317bf92d04e8374ebf2.exe	89
PID 3420 wrote to memory of 4224	3420	JaffaCakes118_4e370c11ec3d5490a4f08c8f25219cd96b3098e619380317bf92d04e8374ebf2.exe	89
PID 3420 wrote to memory of 3200	3420	JaffaCakes118_4e370c11ec3d5490a4f08c8f25219cd96b3098e619380317bf92d04e8374ebf2.exe	91
PID 3420 wrote to memory of 3200	3420	JaffaCakes118_4e370c11ec3d5490a4f08c8f25219cd96b3098e619380317bf92d04e8374ebf2.exe	91
PID 3420 wrote to memory of 3200	3420	JaffaCakes118_4e370c11ec3d5490a4f08c8f25219cd96b3098e619380317bf92d04e8374ebf2.exe	91
PID 3420 wrote to memory of 3428	3420	JaffaCakes118_4e370c11ec3d5490a4f08c8f25219cd96b3098e619380317bf92d04e8374ebf2.exe	94
PID 3420 wrote to memory of 3428	3420	JaffaCakes118_4e370c11ec3d5490a4f08c8f25219cd96b3098e619380317bf92d04e8374ebf2.exe	94
PID 3420 wrote to memory of 3428	3420	JaffaCakes118_4e370c11ec3d5490a4f08c8f25219cd96b3098e619380317bf92d04e8374ebf2.exe	94
PID 5076 wrote to memory of 100	5076	ybucacku.exe	96
PID 5076 wrote to memory of 100	5076	ybucacku.exe	96
PID 5076 wrote to memory of 100	5076	ybucacku.exe	96
PID 5076 wrote to memory of 100	5076	ybucacku.exe	96
PID 5076 wrote to memory of 100	5076	ybucacku.exe	96

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4e370c11ec3d5490a4f08c8f25219cd96b3098e619380317bf92d04e8374ebf2.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4e370c11ec3d5490a4f08c8f25219cd96b3098e619380317bf92d04e8374ebf2.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3420
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kmgcxwr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1436
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ybucacku.exe" C:\Windows\SysWOW64\kmgcxwr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1400
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create kmgcxwr binPath= "C:\Windows\SysWOW64\kmgcxwr\ybucacku.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4e370c11ec3d5490a4f08c8f25219cd96b3098e619380317bf92d04e8374ebf2.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2520
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description kmgcxwr "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4224
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start kmgcxwr
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3200
- 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:3428

C:\Windows\SysWOW64\kmgcxwr\ybucacku.exe
C:\Windows\SysWOW64\kmgcxwr\ybucacku.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4e370c11ec3d5490a4f08c8f25219cd96b3098e619380317bf92d04e8374ebf2.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5076
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:100

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\ybucacku.exe

Filesize
12.5MB

MD5
fb5bd53fdef8a83dbc6bb206f1cfc2b0

SHA1
84744cf6ffef18400cefc800ee593f56d4a925c3

SHA256
b8db637f4220d71957b7ddd15e05304b8212dfdfeb5f91d1590a1ccaf95de2d8

SHA512
da9abcfe4191d4b4cbaad5b7d511078a833313627cbafe09d2ff20085ed26df7e2d50855b24f0b929a57a189532569001a694d1a96c8882b3c2cdbbb28324572

Download Submit
memory/100-14-0x0000000000800000-0x0000000000815000-memory.dmp

Filesize
84KB

Download
memory/100-19-0x0000000000800000-0x0000000000815000-memory.dmp

Filesize
84KB

Download
memory/100-16-0x0000000000800000-0x0000000000815000-memory.dmp

Filesize
84KB

Download
memory/3420-8-0x0000000000400000-0x00000000004AB000-memory.dmp

Filesize
684KB

Download
memory/3420-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3420-1-0x0000000000750000-0x0000000000850000-memory.dmp

Filesize
1024KB

Download
memory/3420-9-0x0000000002210000-0x0000000002223000-memory.dmp

Filesize
76KB

Download
memory/3420-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3420-2-0x0000000002210000-0x0000000002223000-memory.dmp

Filesize
76KB

Download
memory/5076-11-0x0000000000400000-0x00000000004AB000-memory.dmp

Filesize
684KB

Download
memory/5076-12-0x0000000000400000-0x00000000004AB000-memory.dmp

Filesize
684KB

Download
memory/5076-13-0x0000000000400000-0x00000000004AB000-memory.dmp

Filesize
684KB

Download
memory/5076-18-0x0000000000400000-0x00000000004AB000-memory.dmp

Filesize
684KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads