xtremerat | 6072536e1c68913f2effcacbb4b4b0f32ca7c3bbc1a65fc700c3db86975f631f

Analysis

max time kernel
149s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03-01-2025 19:39

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General

Target

sample.exe
Size

39KB
MD5

f49720377b99b63148ea58af59500e1c
SHA1

8c6c28eebfb561ee42b86b87c38c63db08306670
SHA256

1b5d7a30ee1b398082624912e0f27c6a5c7eb52f5cd5f7f2f6b1308b58313be4
SHA512

7ff9d1dc33ae0d58db7a7b0ec790af6aac5aeca4b950cf11070c88bb190da229b5f073af7de38a2be425b23e9146f3a7323d4b5daf39d1f12bcc12c8620bf12b
SSDEEP

768:BMuijtHf5g7/IIG3bGcYDBSvFIWuePQtv66lYQtzug2GnpFgG:qNW71rcYDAWeotvXlY2KInpB

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

kasmsss.no-ip.biz

Signatures

Detect XtremeRAT payload 3 IoCs

resource	yara_rule
behavioral1/memory/2756-3-0x0000000010000000-0x0000000010050000-memory.dmp	family_xtremerat
behavioral1/memory/2708-4-0x0000000010000000-0x0000000010050000-memory.dmp	family_xtremerat
behavioral1/memory/2756-5-0x0000000010000000-0x0000000010050000-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

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2708-0-0x0000000010000000-0x0000000010050000-memory.dmp	upx
behavioral1/memory/2756-3-0x0000000010000000-0x0000000010050000-memory.dmp	upx
behavioral1/memory/2708-4-0x0000000010000000-0x0000000010050000-memory.dmp	upx
behavioral1/memory/2756-5-0x0000000010000000-0x0000000010050000-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 2 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	sample.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2708 wrote to memory of 2756	2708	sample.exe	30
PID 2708 wrote to memory of 2756	2708	sample.exe	30
PID 2708 wrote to memory of 2756	2708	sample.exe	30
PID 2708 wrote to memory of 2756	2708	sample.exe	30
PID 2708 wrote to memory of 2756	2708	sample.exe	30
PID 2708 wrote to memory of 2712	2708	sample.exe	31
PID 2708 wrote to memory of 2712	2708	sample.exe	31
PID 2708 wrote to memory of 2712	2708	sample.exe	31
PID 2708 wrote to memory of 2712	2708	sample.exe	31
PID 2708 wrote to memory of 2712	2708	sample.exe	31

C:\Users\Admin\AppData\Local\Temp\sample.exe
"C:\Users\Admin\AppData\Local\Temp\sample.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2708
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2756
- C:\Program Files\Internet Explorer\iexplore.exe
  "C:\Program Files\Internet Explorer\iexplore.exe"
  2⤵
  PID:2712

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2708-0-0x0000000010000000-0x0000000010050000-memory.dmp

Filesize
320KB

Download
memory/2708-4-0x0000000010000000-0x0000000010050000-memory.dmp

Filesize
320KB

Download
memory/2756-1-0x0000000010000000-0x0000000010050000-memory.dmp

Filesize
320KB

Download
memory/2756-3-0x0000000010000000-0x0000000010050000-memory.dmp

Filesize
320KB

Download
memory/2756-5-0x0000000010000000-0x0000000010050000-memory.dmp

Filesize
320KB

Download