xtremerat | b67c521f38fd8e91f15569dcae4ad17b182b96ef0f6a0ed734a291a95d1ce2ff

General

Target

b67c521f38fd8e91f15569dcae4ad17b182b96ef0f6a0ed734a291a95d1ce2ff.exe
Size

64KB
MD5

453440587f5a785862795cf62799a21f
SHA1

203ee54e6a9fff11e86c77667d3fe53ce59e957f
SHA256

b67c521f38fd8e91f15569dcae4ad17b182b96ef0f6a0ed734a291a95d1ce2ff
SHA512

69b77526571abb9a28eea3180cece31128c2edc382f03e734b5155e388dd0e468d700dd733556e32b9ff81f57996dc55bf2e1519b2d8c191aceb5b549fd415b8
SSDEEP

1536:U8+D7t0E0RGnl9T039GLI1niVGRwghzpa9:UfD770wnl9Yr1nthhzy

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Signatures

Detect XtremeRAT payload 4 IoCs

resource	yara_rule
behavioral2/memory/2908-3-0x0000000000C80000-0x0000000000C9C000-memory.dmp	family_xtremerat
behavioral2/memory/620-8-0x0000000000C80000-0x0000000000C9C000-memory.dmp	family_xtremerat
behavioral2/memory/2908-9-0x0000000000C80000-0x0000000000C9C000-memory.dmp	family_xtremerat
behavioral2/memory/620-11-0x0000000000C80000-0x0000000000C9C000-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 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\{5460C4DF-B266-909E-CB58-E32B79832EB2}	b67c521f38fd8e91f15569dcae4ad17b182b96ef0f6a0ed734a291a95d1ce2ff.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5460C4DF-B266-909E-CB58-E32B79832EB2}\StubPath = "C:\\Windows\\InstallDir\\Server.exe restart"	b67c521f38fd8e91f15569dcae4ad17b182b96ef0f6a0ed734a291a95d1ce2ff.exe

Adds Run key to start application 2 TTPs 2 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\\Server.exe"	b67c521f38fd8e91f15569dcae4ad17b182b96ef0f6a0ed734a291a95d1ce2ff.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\InstallDir\\Server.exe"	b67c521f38fd8e91f15569dcae4ad17b182b96ef0f6a0ed734a291a95d1ce2ff.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1484 set thread context of 2908	1484	b67c521f38fd8e91f15569dcae4ad17b182b96ef0f6a0ed734a291a95d1ce2ff.exe	83

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2908-0-0x0000000000C80000-0x0000000000C9C000-memory.dmp	upx
behavioral2/memory/2908-2-0x0000000000C80000-0x0000000000C9C000-memory.dmp	upx
behavioral2/memory/2908-3-0x0000000000C80000-0x0000000000C9C000-memory.dmp	upx
behavioral2/memory/2908-4-0x0000000000C80000-0x0000000000C9C000-memory.dmp	upx
behavioral2/memory/620-8-0x0000000000C80000-0x0000000000C9C000-memory.dmp	upx
behavioral2/memory/2908-9-0x0000000000C80000-0x0000000000C9C000-memory.dmp	upx
behavioral2/memory/620-11-0x0000000000C80000-0x0000000000C9C000-memory.dmp	upx

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\InstallDir\Server.exe	b67c521f38fd8e91f15569dcae4ad17b182b96ef0f6a0ed734a291a95d1ce2ff.exe
File created	C:\Windows\InstallDir\Server.exe	b67c521f38fd8e91f15569dcae4ad17b182b96ef0f6a0ed734a291a95d1ce2ff.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 3 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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b67c521f38fd8e91f15569dcae4ad17b182b96ef0f6a0ed734a291a95d1ce2ff.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b67c521f38fd8e91f15569dcae4ad17b182b96ef0f6a0ed734a291a95d1ce2ff.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
620	svchost.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1484 wrote to memory of 2908	1484	b67c521f38fd8e91f15569dcae4ad17b182b96ef0f6a0ed734a291a95d1ce2ff.exe	83
PID 1484 wrote to memory of 2908	1484	b67c521f38fd8e91f15569dcae4ad17b182b96ef0f6a0ed734a291a95d1ce2ff.exe	83
PID 1484 wrote to memory of 2908	1484	b67c521f38fd8e91f15569dcae4ad17b182b96ef0f6a0ed734a291a95d1ce2ff.exe	83
PID 1484 wrote to memory of 2908	1484	b67c521f38fd8e91f15569dcae4ad17b182b96ef0f6a0ed734a291a95d1ce2ff.exe	83
PID 1484 wrote to memory of 2908	1484	b67c521f38fd8e91f15569dcae4ad17b182b96ef0f6a0ed734a291a95d1ce2ff.exe	83
PID 1484 wrote to memory of 2908	1484	b67c521f38fd8e91f15569dcae4ad17b182b96ef0f6a0ed734a291a95d1ce2ff.exe	83
PID 1484 wrote to memory of 2908	1484	b67c521f38fd8e91f15569dcae4ad17b182b96ef0f6a0ed734a291a95d1ce2ff.exe	83
PID 1484 wrote to memory of 2908	1484	b67c521f38fd8e91f15569dcae4ad17b182b96ef0f6a0ed734a291a95d1ce2ff.exe	83
PID 2908 wrote to memory of 620	2908	b67c521f38fd8e91f15569dcae4ad17b182b96ef0f6a0ed734a291a95d1ce2ff.exe	85
PID 2908 wrote to memory of 620	2908	b67c521f38fd8e91f15569dcae4ad17b182b96ef0f6a0ed734a291a95d1ce2ff.exe	85
PID 2908 wrote to memory of 620	2908	b67c521f38fd8e91f15569dcae4ad17b182b96ef0f6a0ed734a291a95d1ce2ff.exe	85
PID 2908 wrote to memory of 620	2908	b67c521f38fd8e91f15569dcae4ad17b182b96ef0f6a0ed734a291a95d1ce2ff.exe	85

C:\Users\Admin\AppData\Local\Temp\b67c521f38fd8e91f15569dcae4ad17b182b96ef0f6a0ed734a291a95d1ce2ff.exe
"C:\Users\Admin\AppData\Local\Temp\b67c521f38fd8e91f15569dcae4ad17b182b96ef0f6a0ed734a291a95d1ce2ff.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1484
- C:\Users\Admin\AppData\Local\Temp\b67c521f38fd8e91f15569dcae4ad17b182b96ef0f6a0ed734a291a95d1ce2ff.exe
  "C:\Users\Admin\AppData\Local\Temp\b67c521f38fd8e91f15569dcae4ad17b182b96ef0f6a0ed734a291a95d1ce2ff.exe"
  2⤵
  - Boot or Logon Autostart Execution: Active Setup
  - Adds Run key to start application
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2908
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:620

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

memory/620-8-0x0000000000C80000-0x0000000000C9C000-memory.dmp

Filesize
112KB

Download
memory/620-11-0x0000000000C80000-0x0000000000C9C000-memory.dmp

Filesize
112KB

Download
memory/2908-0-0x0000000000C80000-0x0000000000C9C000-memory.dmp

Filesize
112KB

Download
memory/2908-2-0x0000000000C80000-0x0000000000C9C000-memory.dmp

Filesize
112KB

Download
memory/2908-3-0x0000000000C80000-0x0000000000C9C000-memory.dmp

Filesize
112KB

Download
memory/2908-4-0x0000000000C80000-0x0000000000C9C000-memory.dmp

Filesize
112KB

Download
memory/2908-9-0x0000000000C80000-0x0000000000C9C000-memory.dmp

Filesize
112KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads