xtremerat | 80c5c55f66818e550e74a81032ad7707efea157d2b5280834b5fb4376698fde8

General

Target

18a35c6ab16320bbacc6b6a8bbc7e4c0_JaffaCakes118.exe
Size

1.1MB
MD5

18a35c6ab16320bbacc6b6a8bbc7e4c0
SHA1

c67d402f5b2005feffe97268dc0a52c76a804272
SHA256

80c5c55f66818e550e74a81032ad7707efea157d2b5280834b5fb4376698fde8
SHA512

56409aa5b34da88a345596b98070039cd03b7ba86b54d062aa6b971f2ba39b781fd51095e69be262f70aa9badeaa4ef54a825a29d4bca86eeccdfa6aef13bd5f
SSDEEP

24576:xc9vANcCnapiZMxRnSoG5sZyeXsLDtHTbPCx/1Yn2ENFdg:xOj3S5CZsFH3PG/1OFe

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Signatures

Detect XtremeRAT payload 3 IoCs

resource	yara_rule
behavioral2/memory/4300-59-0x0000000000C80000-0x0000000000C95000-memory.dmp	family_xtremerat
behavioral2/memory/3364-60-0x0000000000C80000-0x0000000000C95000-memory.dmp	family_xtremerat
behavioral2/memory/4300-62-0x0000000000C80000-0x0000000000C95000-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

Boot or Logon Autostart Execution: Active Setup 2 TTPs 2 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
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{I3Y2YDF6-WG3D-87OQ-3JVX-3I61EMHL820N}	iexplo.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{I3Y2YDF6-WG3D-87OQ-3JVX-3I61EMHL820N}\StubPath = "C:\\Windows\\InstallDir\\iexplo.exe restart"	iexplo.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-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	18a35c6ab16320bbacc6b6a8bbc7e4c0_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
3116	hkcmd.exe
3364	iexplo.exe

Adds Run key to start application 2 TTPs 3 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\\InstallDir\\iexplo.exe"	iexplo.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\InstallDir\\iexplo.exe"	iexplo.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\hkcmd = "\"C:\\Users\\Admin\\AppData\\Local\\hkcmd.exe\" /background"	hkcmd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1520 set thread context of 3116	1520	18a35c6ab16320bbacc6b6a8bbc7e4c0_JaffaCakes118.exe	82

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000700000002349c-53.dat	upx
behavioral2/memory/3364-54-0x0000000000C80000-0x0000000000C95000-memory.dmp	upx
behavioral2/memory/4300-59-0x0000000000C80000-0x0000000000C95000-memory.dmp	upx
behavioral2/memory/3364-60-0x0000000000C80000-0x0000000000C95000-memory.dmp	upx
behavioral2/memory/4300-62-0x0000000000C80000-0x0000000000C95000-memory.dmp	upx

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\InstallDir\iexplo.exe	iexplo.exe
File created	C:\Windows\InstallDir\iexplo.exe	iexplo.exe

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	18a35c6ab16320bbacc6b6a8bbc7e4c0_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	hkcmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iexplo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4300	explorer.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1520 wrote to memory of 3116	1520	18a35c6ab16320bbacc6b6a8bbc7e4c0_JaffaCakes118.exe	82
PID 1520 wrote to memory of 3116	1520	18a35c6ab16320bbacc6b6a8bbc7e4c0_JaffaCakes118.exe	82
PID 1520 wrote to memory of 3116	1520	18a35c6ab16320bbacc6b6a8bbc7e4c0_JaffaCakes118.exe	82
PID 1520 wrote to memory of 3116	1520	18a35c6ab16320bbacc6b6a8bbc7e4c0_JaffaCakes118.exe	82
PID 1520 wrote to memory of 3116	1520	18a35c6ab16320bbacc6b6a8bbc7e4c0_JaffaCakes118.exe	82
PID 1520 wrote to memory of 3364	1520	18a35c6ab16320bbacc6b6a8bbc7e4c0_JaffaCakes118.exe	83
PID 1520 wrote to memory of 3364	1520	18a35c6ab16320bbacc6b6a8bbc7e4c0_JaffaCakes118.exe	83
PID 1520 wrote to memory of 3364	1520	18a35c6ab16320bbacc6b6a8bbc7e4c0_JaffaCakes118.exe	83
PID 3364 wrote to memory of 4300	3364	iexplo.exe	84
PID 3364 wrote to memory of 4300	3364	iexplo.exe	84
PID 3364 wrote to memory of 4300	3364	iexplo.exe	84
PID 3364 wrote to memory of 4300	3364	iexplo.exe	84

C:\Users\Admin\AppData\Local\Temp\18a35c6ab16320bbacc6b6a8bbc7e4c0_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\18a35c6ab16320bbacc6b6a8bbc7e4c0_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1520
- C:\Users\Admin\AppData\Local\hkcmd.exe
  "C:\Users\Admin\AppData\Local\hkcmd.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  PID:3116
- C:\Users\Admin\AppData\Local\iexplo.exe
  "C:\Users\Admin\AppData\Local\iexplo.exe"
  2⤵
  - Boot or Logon Autostart Execution: Active Setup
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3364
- - C:\Windows\SysWOW64\explorer.exe
    explorer.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:4300

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

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

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Downloads

C:\Users\Admin\AppData\Local\hkcmd.exe

Filesize
1.1MB

MD5
18a35c6ab16320bbacc6b6a8bbc7e4c0

SHA1
c67d402f5b2005feffe97268dc0a52c76a804272

SHA256
80c5c55f66818e550e74a81032ad7707efea157d2b5280834b5fb4376698fde8

SHA512
56409aa5b34da88a345596b98070039cd03b7ba86b54d062aa6b971f2ba39b781fd51095e69be262f70aa9badeaa4ef54a825a29d4bca86eeccdfa6aef13bd5f

Download Submit
C:\Users\Admin\AppData\Local\iexplo.exe

Filesize
19KB

MD5
d348fc6dd02e260f509ea5deee9ab910

SHA1
1ab5e596292d1d8815421fd260641cad19cc0c37

SHA256
808049691225fa8e93c300e4fdc1881e961fa854f3b82d70556c4b3eeffba10d

SHA512
ace722c93cedb43b38d7d4f9edbf5ba992c6cfc7fde86c121214b49531dfff7df3b78b91ef95dc5480dcb1ae289411c710be374afe7e5cc9980bb29b7f4088f5

Download Submit
memory/1520-55-0x0000000000400000-0x000000000052B000-memory.dmp

Filesize
1.2MB

Download
memory/3116-29-0x0000000000400000-0x00000000004A2000-memory.dmp

Filesize
648KB

Download
memory/3116-46-0x0000000002440000-0x0000000002441000-memory.dmp

Filesize
4KB

Download
memory/3116-25-0x0000000000400000-0x00000000004A2000-memory.dmp

Filesize
648KB

Download
memory/3116-41-0x0000000000400000-0x00000000004A2000-memory.dmp

Filesize
648KB

Download
memory/3116-23-0x0000000000400000-0x00000000004A2000-memory.dmp

Filesize
648KB

Download
memory/3116-7-0x0000000000400000-0x00000000004A2000-memory.dmp

Filesize
648KB

Download
memory/3116-6-0x0000000000400000-0x00000000004A2000-memory.dmp

Filesize
648KB

Download
memory/3116-64-0x0000000000400000-0x00000000004A2000-memory.dmp

Filesize
648KB

Download
memory/3116-39-0x0000000000400000-0x00000000004A2000-memory.dmp

Filesize
648KB

Download
memory/3116-37-0x0000000000400000-0x00000000004A2000-memory.dmp

Filesize
648KB

Download
memory/3116-35-0x0000000000400000-0x00000000004A2000-memory.dmp

Filesize
648KB

Download
memory/3116-21-0x0000000000400000-0x00000000004A2000-memory.dmp

Filesize
648KB

Download
memory/3116-31-0x0000000000400000-0x00000000004A2000-memory.dmp

Filesize
648KB

Download
memory/3116-2-0x0000000000400000-0x00000000004A2000-memory.dmp

Filesize
648KB

Download
memory/3116-43-0x0000000000400000-0x00000000004A2000-memory.dmp

Filesize
648KB

Download
memory/3116-45-0x0000000000400000-0x00000000004A2000-memory.dmp

Filesize
648KB

Download
memory/3116-33-0x0000000000400000-0x00000000004A2000-memory.dmp

Filesize
648KB

Download
memory/3116-19-0x0000000000400000-0x00000000004A2000-memory.dmp

Filesize
648KB

Download
memory/3116-15-0x0000000000400000-0x00000000004A2000-memory.dmp

Filesize
648KB

Download
memory/3116-13-0x0000000000400000-0x00000000004A2000-memory.dmp

Filesize
648KB

Download
memory/3116-11-0x0000000000400000-0x00000000004A2000-memory.dmp

Filesize
648KB

Download
memory/3116-9-0x0000000000400000-0x00000000004A2000-memory.dmp

Filesize
648KB

Download
memory/3116-27-0x0000000000400000-0x00000000004A2000-memory.dmp

Filesize
648KB

Download
memory/3116-17-0x0000000000400000-0x00000000004A2000-memory.dmp

Filesize
648KB

Download
memory/3116-63-0x0000000002440000-0x0000000002441000-memory.dmp

Filesize
4KB

Download
memory/3364-60-0x0000000000C80000-0x0000000000C95000-memory.dmp

Filesize
84KB

Download
memory/3364-54-0x0000000000C80000-0x0000000000C95000-memory.dmp

Filesize
84KB

Download
memory/4300-62-0x0000000000C80000-0x0000000000C95000-memory.dmp

Filesize
84KB

Download
memory/4300-59-0x0000000000C80000-0x0000000000C95000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads