xtremerat | a1e31d9df888ffb07dc84669cef4773e4f00e86c644e24c0c83da7bc08433405

Analysis

max time kernel
134s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03-11-2024 23:20

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General

Target

8dff34bbd074ac6e82b88e8277ee9ce5_JaffaCakes118.exe
Size

33KB
MD5

8dff34bbd074ac6e82b88e8277ee9ce5
SHA1

a90d9f2a6057bc28e8b18364c53d8052556f3950
SHA256

a1e31d9df888ffb07dc84669cef4773e4f00e86c644e24c0c83da7bc08433405
SHA512

a2e5df1a356de19230c2655ccf3ca5c8e4b3a4cb7606f8ae65532de8139e68ae281f509d48b12f36cc8706d02103ad45507de1dff26f0af44c5507e04d5f4a10
SSDEEP

768:NMuijtHf5g7/IIG3bGcYDBSvFIWuePQDGEsgRMdd5rdL420eLllC:mNW71rcYDAWeoDrsEud5rds

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

avic.zapto.org

Signatures

Detect XtremeRAT payload 3 IoCs

resource	yara_rule
behavioral2/memory/4488-1-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4136-3-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4488-5-0x0000000010000000-0x000000001004D000-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/4136-0-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4488-1-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4136-3-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4488-5-0x0000000010000000-0x000000001004D000-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
4712	4488	WerFault.exe	84
3800	4488	WerFault.exe	84

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	8dff34bbd074ac6e82b88e8277ee9ce5_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 4136 wrote to memory of 4488	4136	8dff34bbd074ac6e82b88e8277ee9ce5_JaffaCakes118.exe	84
PID 4136 wrote to memory of 4488	4136	8dff34bbd074ac6e82b88e8277ee9ce5_JaffaCakes118.exe	84
PID 4136 wrote to memory of 4488	4136	8dff34bbd074ac6e82b88e8277ee9ce5_JaffaCakes118.exe	84
PID 4136 wrote to memory of 4488	4136	8dff34bbd074ac6e82b88e8277ee9ce5_JaffaCakes118.exe	84
PID 4136 wrote to memory of 3712	4136	8dff34bbd074ac6e82b88e8277ee9ce5_JaffaCakes118.exe	85
PID 4136 wrote to memory of 3712	4136	8dff34bbd074ac6e82b88e8277ee9ce5_JaffaCakes118.exe	85
PID 4136 wrote to memory of 3712	4136	8dff34bbd074ac6e82b88e8277ee9ce5_JaffaCakes118.exe	85

C:\Users\Admin\AppData\Local\Temp\8dff34bbd074ac6e82b88e8277ee9ce5_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\8dff34bbd074ac6e82b88e8277ee9ce5_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4136
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4488
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4488 -s 480
    3⤵
    - Program crash
    PID:4712
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4488 -s 488
    3⤵
    - Program crash
    PID:3800
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
  2⤵
  PID:3712

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4488 -ip 4488
1⤵
PID:1104

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4488 -ip 4488
1⤵
PID:4860

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/4136-0-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4136-3-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4488-1-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4488-5-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download