xtremerat | 55d3b824d559c9f64ae192c8e8e349d4cb049879d1b44b48007f17187c9f7018

Analysis

max time kernel
95s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
22-01-2025 21:38

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General

Target

55d3b824d559c9f64ae192c8e8e349d4cb049879d1b44b48007f17187c9f7018.exe
Size

33KB
MD5

3c6efa21e31dc37088748af3f90bd40f
SHA1

9081524844743c5a679dbf32592e4f10de7035bc
SHA256

55d3b824d559c9f64ae192c8e8e349d4cb049879d1b44b48007f17187c9f7018
SHA512

0c3281af8b004016abc1821305b4073b842e950d9028001da76be347e19b7ed067362f58d36042b7685d81864566fd4b8cdf3c59ae4378c83e1395d81cf8cc8f
SSDEEP

768:hMuijtHf5g7/IIG3bGcYDBSvFIWuePQDGEsgCBmXRXegg6:KNW71rcYDAWeoDrsDMV

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

almoalem.myvnc.com

Signatures

Detect XtremeRAT payload 3 IoCs

resource	yara_rule
behavioral2/memory/4216-1-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/748-3-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4216-4-0x0000000010000000-0x000000001004D000-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
Xtremerat family
xtremerat

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/748-0-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4216-1-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/748-3-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4216-4-0x0000000010000000-0x000000001004D000-memory.dmp	upx

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

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1960	4216	WerFault.exe	82
2264	4216	WerFault.exe	82

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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	55d3b824d559c9f64ae192c8e8e349d4cb049879d1b44b48007f17187c9f7018.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 748 wrote to memory of 4216	748	55d3b824d559c9f64ae192c8e8e349d4cb049879d1b44b48007f17187c9f7018.exe	82
PID 748 wrote to memory of 4216	748	55d3b824d559c9f64ae192c8e8e349d4cb049879d1b44b48007f17187c9f7018.exe	82
PID 748 wrote to memory of 4216	748	55d3b824d559c9f64ae192c8e8e349d4cb049879d1b44b48007f17187c9f7018.exe	82
PID 748 wrote to memory of 4216	748	55d3b824d559c9f64ae192c8e8e349d4cb049879d1b44b48007f17187c9f7018.exe	82
PID 748 wrote to memory of 4424	748	55d3b824d559c9f64ae192c8e8e349d4cb049879d1b44b48007f17187c9f7018.exe	83
PID 748 wrote to memory of 4424	748	55d3b824d559c9f64ae192c8e8e349d4cb049879d1b44b48007f17187c9f7018.exe	83
PID 748 wrote to memory of 4424	748	55d3b824d559c9f64ae192c8e8e349d4cb049879d1b44b48007f17187c9f7018.exe	83

C:\Users\Admin\AppData\Local\Temp\55d3b824d559c9f64ae192c8e8e349d4cb049879d1b44b48007f17187c9f7018.exe
"C:\Users\Admin\AppData\Local\Temp\55d3b824d559c9f64ae192c8e8e349d4cb049879d1b44b48007f17187c9f7018.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:748
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4216
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4216 -s 480
    3⤵
    - Program crash
    PID:1960
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4216 -s 488
    3⤵
    - Program crash
    PID:2264
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
  2⤵
  PID:4424

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4216 -ip 4216
1⤵
PID:536

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4216 -ip 4216
1⤵
PID:4084

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

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Downloads

memory/748-0-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/748-3-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4216-1-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4216-4-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download