xtremerat | 80be7acd19b153b6afc35df2842a55f255b77254915acd16def77b5130087de1

General

Target

JaffaCakes118_a0f79b7b8f5bce76f9d6ca94293d7538.exe
Size

535KB
MD5

a0f79b7b8f5bce76f9d6ca94293d7538
SHA1

898f057bfc60817ede94d9664b840486f2385164
SHA256

80be7acd19b153b6afc35df2842a55f255b77254915acd16def77b5130087de1
SHA512

34aee253d49e53d59f55fc99eb913d8c71afada504b311692f8256612805104fb388d2249a45673fd8a53d2a5bea3ad76def2c0ccd4db464aef75d172ca81896
SSDEEP

12288:6GuWm0QRVRdgFkEXIc0pg3xTX2ep3vWQrWKZZo/:Xc7dgadoTXFdeaWM+/

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Signatures

Detect XtremeRAT payload 4 IoCs

resource	yara_rule
behavioral1/memory/2192-29-0x0000000000C80000-0x0000000000C95000-memory.dmp	family_xtremerat
behavioral1/memory/600-33-0x0000000000C80000-0x0000000000C95000-memory.dmp	family_xtremerat
behavioral1/memory/2624-34-0x0000000000C80000-0x0000000000C95000-memory.dmp	family_xtremerat
behavioral1/memory/600-36-0x0000000000C80000-0x0000000000C95000-memory.dmp	family_xtremerat

XtremeRAT
The XtremeRAT was developed by xtremecoder and has been available since at least 2010, and written in Delphi.
persistence spyware rat xtremerat
Xtremerat family
xtremerat

Boot or Logon Autostart Execution: Active Setup 2 TTPs 4 IoCs

Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

persistence

Active Setup

T1547.014

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{WI0S0J7A-BN72-NO77-52AY-3K5H2N2G8E37}\StubPath = "C:\\Windows\\system32\\InstallDir\\blank.exe"	svchost.exe
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{WI0S0J7A-BN72-NO77-52AY-3K5H2N2G8E37}	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{WI0S0J7A-BN72-NO77-52AY-3K5H2N2G8E37}\StubPath = "C:\\Windows\\system32\\InstallDir\\blank.exe restart"	server.exe
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{WI0S0J7A-BN72-NO77-52AY-3K5H2N2G8E37}	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2624	server.exe

Loads dropped DLL 4 IoCs

pid	Process
2896	JaffaCakes118_a0f79b7b8f5bce76f9d6ca94293d7538.exe
2896	JaffaCakes118_a0f79b7b8f5bce76f9d6ca94293d7538.exe
2896	JaffaCakes118_a0f79b7b8f5bce76f9d6ca94293d7538.exe
2896	JaffaCakes118_a0f79b7b8f5bce76f9d6ca94293d7538.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Windows\\system32\\InstallDir\\blank.exe"	server.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\system32\\InstallDir\\blank.exe"	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Windows\\system32\\InstallDir\\blank.exe"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\system32\\InstallDir\\blank.exe"	svchost.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\InstallDir\blank.exe	server.exe
File opened for modification	C:\Windows\SysWOW64\InstallDir\blank.exe	server.exe

UPX packed file 24 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2896-0-0x0000000000400000-0x0000000000596000-memory.dmp	upx
behavioral1/files/0x0008000000015e48-5.dat	upx
behavioral1/memory/2896-9-0x0000000003BE0000-0x0000000003BF5000-memory.dmp	upx
behavioral1/memory/2896-14-0x0000000003BE0000-0x0000000003BF5000-memory.dmp	upx
behavioral1/memory/2192-29-0x0000000000C80000-0x0000000000C95000-memory.dmp	upx
behavioral1/memory/600-33-0x0000000000C80000-0x0000000000C95000-memory.dmp	upx
behavioral1/memory/2624-34-0x0000000000C80000-0x0000000000C95000-memory.dmp	upx
behavioral1/memory/600-36-0x0000000000C80000-0x0000000000C95000-memory.dmp	upx
behavioral1/memory/2896-37-0x0000000000400000-0x0000000000596000-memory.dmp	upx
behavioral1/memory/2896-38-0x0000000003BE0000-0x0000000003BF0000-memory.dmp	upx
behavioral1/memory/2896-39-0x0000000000400000-0x0000000000596000-memory.dmp	upx
behavioral1/memory/2896-40-0x0000000000400000-0x0000000000596000-memory.dmp	upx
behavioral1/memory/2896-41-0x0000000000400000-0x0000000000596000-memory.dmp	upx
behavioral1/memory/2896-42-0x0000000000400000-0x0000000000596000-memory.dmp	upx
behavioral1/memory/2896-43-0x0000000000400000-0x0000000000596000-memory.dmp	upx
behavioral1/memory/2896-44-0x0000000000400000-0x0000000000596000-memory.dmp	upx
behavioral1/memory/2896-45-0x0000000000400000-0x0000000000596000-memory.dmp	upx
behavioral1/memory/2896-46-0x0000000000400000-0x0000000000596000-memory.dmp	upx
behavioral1/memory/2896-47-0x0000000000400000-0x0000000000596000-memory.dmp	upx
behavioral1/memory/2896-48-0x0000000000400000-0x0000000000596000-memory.dmp	upx
behavioral1/memory/2896-49-0x0000000000400000-0x0000000000596000-memory.dmp	upx
behavioral1/memory/2896-50-0x0000000000400000-0x0000000000596000-memory.dmp	upx
behavioral1/memory/2896-51-0x0000000000400000-0x0000000000596000-memory.dmp	upx
behavioral1/memory/2896-52-0x0000000000400000-0x0000000000596000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 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_a0f79b7b8f5bce76f9d6ca94293d7538.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2896	JaffaCakes118_a0f79b7b8f5bce76f9d6ca94293d7538.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2896	JaffaCakes118_a0f79b7b8f5bce76f9d6ca94293d7538.exe
2896	JaffaCakes118_a0f79b7b8f5bce76f9d6ca94293d7538.exe
600	explorer.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2896 wrote to memory of 2624	2896	JaffaCakes118_a0f79b7b8f5bce76f9d6ca94293d7538.exe	30
PID 2896 wrote to memory of 2624	2896	JaffaCakes118_a0f79b7b8f5bce76f9d6ca94293d7538.exe	30
PID 2896 wrote to memory of 2624	2896	JaffaCakes118_a0f79b7b8f5bce76f9d6ca94293d7538.exe	30
PID 2896 wrote to memory of 2624	2896	JaffaCakes118_a0f79b7b8f5bce76f9d6ca94293d7538.exe	30
PID 2624 wrote to memory of 2192	2624	server.exe	31
PID 2624 wrote to memory of 2192	2624	server.exe	31
PID 2624 wrote to memory of 2192	2624	server.exe	31
PID 2624 wrote to memory of 2192	2624	server.exe	31
PID 2624 wrote to memory of 2192	2624	server.exe	31
PID 2624 wrote to memory of 600	2624	server.exe	32
PID 2624 wrote to memory of 600	2624	server.exe	32
PID 2624 wrote to memory of 600	2624	server.exe	32
PID 2624 wrote to memory of 600	2624	server.exe	32
PID 2624 wrote to memory of 600	2624	server.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a0f79b7b8f5bce76f9d6ca94293d7538.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a0f79b7b8f5bce76f9d6ca94293d7538.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2896
- C:\Users\Admin\AppData\Local\Temp\server.exe
  "C:\Users\Admin\AppData\Local\Temp\server.exe" cd$
  2⤵
  - Boot or Logon Autostart Execution: Active Setup
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2624
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - Boot or Logon Autostart Execution: Active Setup
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    PID:2192
- - C:\Windows\SysWOW64\explorer.exe
    explorer.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:600

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Active Setup

1

T1547.014

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Active Setup

1

T1547.014

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

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\server.exe

Filesize
19KB

MD5
4903fed7be13b3083b59f19bb3e1c62b

SHA1
96ddfd8acf0aa41d3cd8224fcd893878e429d4ab

SHA256
87162eca70b101610a3aff424bdaee76bd6474898d35fb5a3f69233a88392688

SHA512
58c692d20e085f94bff3261578a32796aca73868fae89aeb7975e40ff1ae066179957076c20fa0e2b4f46787c244a8aabbdbe99238ad2a18d967dc586340c16d

Download Submit
memory/600-36-0x0000000000C80000-0x0000000000C95000-memory.dmp

Filesize
84KB

Download
memory/600-33-0x0000000000C80000-0x0000000000C95000-memory.dmp

Filesize
84KB

Download
memory/2192-29-0x0000000000C80000-0x0000000000C95000-memory.dmp

Filesize
84KB

Download
memory/2624-34-0x0000000000C80000-0x0000000000C95000-memory.dmp

Filesize
84KB

Download
memory/2896-39-0x0000000000400000-0x0000000000596000-memory.dmp

Filesize
1.6MB

Download
memory/2896-43-0x0000000000400000-0x0000000000596000-memory.dmp

Filesize
1.6MB

Download
memory/2896-14-0x0000000003BE0000-0x0000000003BF5000-memory.dmp

Filesize
84KB

Download
memory/2896-9-0x0000000003BE0000-0x0000000003BF5000-memory.dmp

Filesize
84KB

Download
memory/2896-6-0x0000000003BE0000-0x0000000003BF0000-memory.dmp

Filesize
64KB

Download
memory/2896-37-0x0000000000400000-0x0000000000596000-memory.dmp

Filesize
1.6MB

Download
memory/2896-38-0x0000000003BE0000-0x0000000003BF0000-memory.dmp

Filesize
64KB

Download
memory/2896-0-0x0000000000400000-0x0000000000596000-memory.dmp

Filesize
1.6MB

Download
memory/2896-40-0x0000000000400000-0x0000000000596000-memory.dmp

Filesize
1.6MB

Download
memory/2896-41-0x0000000000400000-0x0000000000596000-memory.dmp

Filesize
1.6MB

Download
memory/2896-42-0x0000000000400000-0x0000000000596000-memory.dmp

Filesize
1.6MB

Download
memory/2896-21-0x0000000003BF0000-0x0000000003C05000-memory.dmp

Filesize
84KB

Download
memory/2896-44-0x0000000000400000-0x0000000000596000-memory.dmp

Filesize
1.6MB

Download
memory/2896-45-0x0000000000400000-0x0000000000596000-memory.dmp

Filesize
1.6MB

Download
memory/2896-46-0x0000000000400000-0x0000000000596000-memory.dmp

Filesize
1.6MB

Download
memory/2896-47-0x0000000000400000-0x0000000000596000-memory.dmp

Filesize
1.6MB

Download
memory/2896-48-0x0000000000400000-0x0000000000596000-memory.dmp

Filesize
1.6MB

Download
memory/2896-49-0x0000000000400000-0x0000000000596000-memory.dmp

Filesize
1.6MB

Download
memory/2896-50-0x0000000000400000-0x0000000000596000-memory.dmp

Filesize
1.6MB

Download
memory/2896-51-0x0000000000400000-0x0000000000596000-memory.dmp

Filesize
1.6MB

Download
memory/2896-52-0x0000000000400000-0x0000000000596000-memory.dmp

Filesize
1.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads