xtremerat | a9b9158a681ab964207ef6871fa876524fa389fafd7daa7c0f3ee93662a55c73

General

Target

JaffaCakes118_da0af3e686fed546be5b6b72c8fa73c5.exe
Size

657KB
MD5

da0af3e686fed546be5b6b72c8fa73c5
SHA1

797d25724f0bbb12a041f71ed1b5c16760cc8ddf
SHA256

a9b9158a681ab964207ef6871fa876524fa389fafd7daa7c0f3ee93662a55c73
SHA512

339df2d46ee03ce9b66c86f9f569d5fc0197c33382328158fb5a524ee983fb3ae0ee6248297aec597328445b3ee73d0721d969056c02aca0b75cfded409ef3c9
SSDEEP

12288:/7CfKaEtRqYvd4i+JKX4vHbvoQ2BZzZ8jnDawtaCqUHB2UhOXgTrP1:/7htki+JKIv8QmZzZ8jDay1qUhzegTr9

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

C2

korcerrah.no-ip.biz

Signatures

Detect XtremeRAT payload 5 IoCs

resource	yara_rule
behavioral2/memory/4080-9-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4080-6-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/3000-10-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4080-11-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/3000-12-0x0000000010000000-0x000000001004D000-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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4684 set thread context of 4080	4684	JaffaCakes118_da0af3e686fed546be5b6b72c8fa73c5.exe	84

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4080-3-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4080-5-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4080-9-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4080-6-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/3000-10-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4080-11-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/3000-12-0x0000000010000000-0x000000001004D000-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
2536	3000	WerFault.exe	86
4952	3000	WerFault.exe	86

System Location Discovery: System Language Discovery 1 TTPs 3 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	JaffaCakes118_da0af3e686fed546be5b6b72c8fa73c5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_da0af3e686fed546be5b6b72c8fa73c5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4684	JaffaCakes118_da0af3e686fed546be5b6b72c8fa73c5.exe
4684	JaffaCakes118_da0af3e686fed546be5b6b72c8fa73c5.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4684 wrote to memory of 4080	4684	JaffaCakes118_da0af3e686fed546be5b6b72c8fa73c5.exe	84
PID 4684 wrote to memory of 4080	4684	JaffaCakes118_da0af3e686fed546be5b6b72c8fa73c5.exe	84
PID 4684 wrote to memory of 4080	4684	JaffaCakes118_da0af3e686fed546be5b6b72c8fa73c5.exe	84
PID 4684 wrote to memory of 4080	4684	JaffaCakes118_da0af3e686fed546be5b6b72c8fa73c5.exe	84
PID 4684 wrote to memory of 4080	4684	JaffaCakes118_da0af3e686fed546be5b6b72c8fa73c5.exe	84
PID 4684 wrote to memory of 4080	4684	JaffaCakes118_da0af3e686fed546be5b6b72c8fa73c5.exe	84
PID 4684 wrote to memory of 4080	4684	JaffaCakes118_da0af3e686fed546be5b6b72c8fa73c5.exe	84
PID 4684 wrote to memory of 4080	4684	JaffaCakes118_da0af3e686fed546be5b6b72c8fa73c5.exe	84
PID 4080 wrote to memory of 3000	4080	JaffaCakes118_da0af3e686fed546be5b6b72c8fa73c5.exe	86
PID 4080 wrote to memory of 3000	4080	JaffaCakes118_da0af3e686fed546be5b6b72c8fa73c5.exe	86
PID 4080 wrote to memory of 3000	4080	JaffaCakes118_da0af3e686fed546be5b6b72c8fa73c5.exe	86
PID 4080 wrote to memory of 3000	4080	JaffaCakes118_da0af3e686fed546be5b6b72c8fa73c5.exe	86
PID 4080 wrote to memory of 4784	4080	JaffaCakes118_da0af3e686fed546be5b6b72c8fa73c5.exe	88
PID 4080 wrote to memory of 4784	4080	JaffaCakes118_da0af3e686fed546be5b6b72c8fa73c5.exe	88
PID 4080 wrote to memory of 4784	4080	JaffaCakes118_da0af3e686fed546be5b6b72c8fa73c5.exe	88

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_da0af3e686fed546be5b6b72c8fa73c5.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_da0af3e686fed546be5b6b72c8fa73c5.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4684
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_da0af3e686fed546be5b6b72c8fa73c5.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_da0af3e686fed546be5b6b72c8fa73c5.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4080
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3000
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3000 -s 480
      4⤵
      Program crash
      PID:2536
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3000 -s 488
      4⤵
      Program crash
      PID:4952
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
    3⤵
    PID:4784

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3000 -ip 3000
1⤵
PID:1540

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3000 -ip 3000
1⤵
PID:4416

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3000-10-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/3000-12-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4080-3-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4080-5-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4080-9-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4080-6-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4080-11-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4684-0-0x0000000000400000-0x00000000007A0000-memory.dmp

Filesize
3.6MB

Download
memory/4684-8-0x0000000000400000-0x00000000007A0000-memory.dmp

Filesize
3.6MB

Download

Analysis

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