xtremerat | bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b

Analysis

max time kernel
133s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
06/12/2022, 10:25

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General

Target

bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b.exe
Size

867KB
MD5

30f5113831c2542dc3324b5c572512d6
SHA1

2052e361bd3462a41b5ba59b4f5a968b2bff1510
SHA256

bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b
SHA512

91ca7129e3d999765827d588e3f5417333985ff122d3b541e88a2e7850ec33d89bc414e5b0803e5361f8332e3170646b49931b701c156feb719ee3a5b9938684
SSDEEP

24576:kIabetnNvsBN7c49W1MNY5+XkAiAD4xd44MIgRhxYeoHvh7:Ab4nNvcNgD1MNY5+XkAiAD4xd44MIgRE

Score

10^/10

xtremerat persistence rat spyware

Malware Config

Extracted

Family

xtremerat

nerozhack.ddns.com.br

alonedevil.no-ip.org

gameszero.dyndns.org

Signatures

Detect XtremeRAT payload 9 IoCs

resource	yara_rule
behavioral2/memory/392-139-0x0000000000000000-mapping.dmp	family_xtremerat
behavioral2/memory/392-140-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/392-141-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/392-143-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/2056-144-0x0000000000000000-mapping.dmp	family_xtremerat
behavioral2/memory/3304-145-0x0000000000000000-mapping.dmp	family_xtremerat
behavioral2/memory/392-146-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/2056-147-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/3304-148-0x0000000010000000-0x000000001004A000-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

Drops file in Drivers directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\System.exe	taskmgr.exe
File created	C:\Windows\system32\drivers\etc\System.exe	taskmgr.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\Run	taskmgr.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\PlusServices = "C:\\Windows\\system32\\drivers\\etc\\System.exe"	taskmgr.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	taskmgr.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\UpdaterStartupUtility = "C:\\Windows\\system32\\drivers\\etc\\System.exe"	taskmgr.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/4420-132-0x0000000000400000-0x00000000004BF000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4420 set thread context of 1448	4420	bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b.exe	79
PID 1448 set thread context of 392	1448	bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b.exe	80

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

System Information Discovery
T1082

Program crash 4 IoCs

pid	pid_target	Process	procid_target
2712	2056	WerFault.exe	81
4988	2056	WerFault.exe	81
4960	3304	WerFault.exe	82
4972	3304	WerFault.exe	82

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1448	bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b.exe
3304	taskmgr.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 4420 wrote to memory of 1448	4420	bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b.exe	79
PID 4420 wrote to memory of 1448	4420	bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b.exe	79
PID 4420 wrote to memory of 1448	4420	bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b.exe	79
PID 4420 wrote to memory of 1448	4420	bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b.exe	79
PID 4420 wrote to memory of 1448	4420	bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b.exe	79
PID 4420 wrote to memory of 1448	4420	bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b.exe	79
PID 4420 wrote to memory of 1448	4420	bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b.exe	79
PID 1448 wrote to memory of 392	1448	bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b.exe	80
PID 1448 wrote to memory of 392	1448	bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b.exe	80
PID 1448 wrote to memory of 392	1448	bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b.exe	80
PID 1448 wrote to memory of 392	1448	bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b.exe	80
PID 1448 wrote to memory of 392	1448	bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b.exe	80
PID 1448 wrote to memory of 392	1448	bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b.exe	80
PID 1448 wrote to memory of 392	1448	bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b.exe	80
PID 1448 wrote to memory of 392	1448	bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b.exe	80
PID 1448 wrote to memory of 392	1448	bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b.exe	80
PID 1448 wrote to memory of 392	1448	bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b.exe	80
PID 1448 wrote to memory of 392	1448	bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b.exe	80
PID 1448 wrote to memory of 392	1448	bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b.exe	80
PID 1448 wrote to memory of 392	1448	bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b.exe	80
PID 392 wrote to memory of 2056	392	bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b.exe	81
PID 392 wrote to memory of 2056	392	bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b.exe	81
PID 392 wrote to memory of 2056	392	bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b.exe	81
PID 392 wrote to memory of 2056	392	bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b.exe	81
PID 392 wrote to memory of 3304	392	bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b.exe	82
PID 392 wrote to memory of 3304	392	bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b.exe	82
PID 392 wrote to memory of 3304	392	bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b.exe	82
PID 392 wrote to memory of 3304	392	bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b.exe	82

C:\Users\Admin\AppData\Local\Temp\bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b.exe
"C:\Users\Admin\AppData\Local\Temp\bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4420
- C:\Users\Admin\AppData\Local\Temp\bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b.exe
  "C:\Users\Admin\AppData\Local\Temp\bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1448
- - C:\Users\Admin\AppData\Local\Temp\bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b.exe
    C:\Users\Admin\AppData\Local\Temp\bc52fef0663fd4e3ce1b7e67284bc941d98e4d2e376f92231039398442651a8b.exe
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:392
  - - C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      4⤵
      PID:2056
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2056 -s 492
        5⤵
        Program crash
        
        PID:2712
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2056 -s 508
        5⤵
        Program crash
        
        PID:4988
  - - C:\WINDOWS\SysWOW64\taskmgr.exe
      C:\WINDOWS\system32\taskmgr.exe
      4⤵
      Drops file in Drivers directory
      Adds Run key to start application
      Suspicious use of SetWindowsHookEx
      PID:3304
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 3304 -s 1076
        5⤵
        Program crash
        
        PID:4960
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 3304 -s 1100
        5⤵
        Program crash
        
        PID:4972

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2056 -ip 2056
1⤵
PID:3100

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 2056 -ip 2056
1⤵
PID:5072

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 3304 -ip 3304
1⤵
PID:5004

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 3304 -ip 3304
1⤵
PID:5044

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/392-140-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download
memory/392-146-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download
memory/392-143-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download
memory/392-141-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download
memory/1448-138-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1448-142-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1448-134-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2056-147-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download
memory/3304-148-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download
memory/4420-132-0x0000000000400000-0x00000000004BF000-memory.dmp

Filesize
764KB

Download