xtremerat | a45cf05b298c43910ba4ac459393d53c4f802e032787c875910a79957fd5c630

Analysis

max time kernel
158s
max time network
166s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
29/11/2022, 13:25

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General

Target

a45cf05b298c43910ba4ac459393d53c4f802e032787c875910a79957fd5c630.exe
Size

33KB
MD5

ded7566bad5523693d25502bea729cdb
SHA1

2b96936a0359e0326d2e47f3feda935df9de0343
SHA256

a45cf05b298c43910ba4ac459393d53c4f802e032787c875910a79957fd5c630
SHA512

4e0ece214e1ea1d117d79e6a26a54c84d17002bf9e96777d7773cc720fafd551c579c485b43a0615b429caa5144cb2c1a2c6ff1c5b2d2e0ad72d758fe0f61740
SSDEEP

768:IMuijtHf5g7/IIG3bGcYDBSvFIWuePQtv66lntCgPJV:hNW71rcYDAWeotvXltnR

Score

10^/10

xtremerat persistence rat spyware upx

Malware Config

Signatures

Detect XtremeRAT payload 4 IoCs

resource	yara_rule
behavioral2/memory/2108-132-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/736-133-0x0000000000000000-mapping.dmp	family_xtremerat
behavioral2/memory/2108-134-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/736-135-0x0000000010000000-0x000000001004D000-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

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2108-132-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/2108-134-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/736-135-0x0000000010000000-0x000000001004D000-memory.dmp	upx

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

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4844	736	WerFault.exe	80
4896	736	WerFault.exe	80

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2108 wrote to memory of 736	2108	a45cf05b298c43910ba4ac459393d53c4f802e032787c875910a79957fd5c630.exe	80
PID 2108 wrote to memory of 736	2108	a45cf05b298c43910ba4ac459393d53c4f802e032787c875910a79957fd5c630.exe	80
PID 2108 wrote to memory of 736	2108	a45cf05b298c43910ba4ac459393d53c4f802e032787c875910a79957fd5c630.exe	80
PID 2108 wrote to memory of 736	2108	a45cf05b298c43910ba4ac459393d53c4f802e032787c875910a79957fd5c630.exe	80
PID 2108 wrote to memory of 540	2108	a45cf05b298c43910ba4ac459393d53c4f802e032787c875910a79957fd5c630.exe	81
PID 2108 wrote to memory of 540	2108	a45cf05b298c43910ba4ac459393d53c4f802e032787c875910a79957fd5c630.exe	81
PID 2108 wrote to memory of 540	2108	a45cf05b298c43910ba4ac459393d53c4f802e032787c875910a79957fd5c630.exe	81

C:\Users\Admin\AppData\Local\Temp\a45cf05b298c43910ba4ac459393d53c4f802e032787c875910a79957fd5c630.exe
"C:\Users\Admin\AppData\Local\Temp\a45cf05b298c43910ba4ac459393d53c4f802e032787c875910a79957fd5c630.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2108
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  PID:736
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 736 -s 480
    3⤵
    - Program crash
    PID:4844
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 736 -s 488
    3⤵
    - Program crash
    PID:4896
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
  2⤵
  PID:540

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 736 -ip 736
1⤵
PID:4932

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 736 -ip 736
1⤵
PID:4812

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/736-135-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2108-132-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2108-134-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download