xtremerat | 4aad75ed803d96e03beca18b288f064f23faae17ae3e812122b41b4eff5686bc

General

Target

915934cf49d064582bfded5e2759bccc_JaffaCakes118.exe
Size

96KB
MD5

915934cf49d064582bfded5e2759bccc
SHA1

8cc0c1565dabe23e68d0a077d7d4c7b85a266e72
SHA256

4aad75ed803d96e03beca18b288f064f23faae17ae3e812122b41b4eff5686bc
SHA512

9d7aa1641f0e91a5f0c811d53ae9646d44268c88c3751bda48b6084782a145e47169cbbc71823c8c685ecad3bd9235759c044444d9903a8fe1a3a8ff80c1cc2a
SSDEEP

1536:q07StElwoTf/1p4hWNdISBpStXN4I/2niUv5NgbKXyUMUGMIyef2:byEaoTf/1OMLISBgtqiURNAKi0eO

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

C2

localer.zapto.org

Signatures

Detect XtremeRAT payload 3 IoCs

resource	yara_rule
behavioral2/memory/2616-13-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/2364-15-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/2364-16-0x0000000010000000-0x000000001004D000-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

Loads dropped DLL 1 IoCs

pid	Process
2996	915934cf49d064582bfded5e2759bccc_JaffaCakes118.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2996 set thread context of 2788	2996	915934cf49d064582bfded5e2759bccc_JaffaCakes118.exe	84
PID 2788 set thread context of 2616	2788	915934cf49d064582bfded5e2759bccc_JaffaCakes118.exe	85

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2616-8-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/2616-12-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/2616-13-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/2364-15-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/2364-16-0x0000000010000000-0x000000001004D000-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
4196	2364	WerFault.exe	86
3996	2364	WerFault.exe	86

System Location Discovery: System Language Discovery 1 TTPs 4 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	915934cf49d064582bfded5e2759bccc_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	915934cf49d064582bfded5e2759bccc_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	915934cf49d064582bfded5e2759bccc_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 2996 wrote to memory of 2788	2996	915934cf49d064582bfded5e2759bccc_JaffaCakes118.exe	84
PID 2996 wrote to memory of 2788	2996	915934cf49d064582bfded5e2759bccc_JaffaCakes118.exe	84
PID 2996 wrote to memory of 2788	2996	915934cf49d064582bfded5e2759bccc_JaffaCakes118.exe	84
PID 2996 wrote to memory of 2788	2996	915934cf49d064582bfded5e2759bccc_JaffaCakes118.exe	84
PID 2996 wrote to memory of 2788	2996	915934cf49d064582bfded5e2759bccc_JaffaCakes118.exe	84
PID 2996 wrote to memory of 2788	2996	915934cf49d064582bfded5e2759bccc_JaffaCakes118.exe	84
PID 2996 wrote to memory of 2788	2996	915934cf49d064582bfded5e2759bccc_JaffaCakes118.exe	84
PID 2788 wrote to memory of 2616	2788	915934cf49d064582bfded5e2759bccc_JaffaCakes118.exe	85
PID 2788 wrote to memory of 2616	2788	915934cf49d064582bfded5e2759bccc_JaffaCakes118.exe	85
PID 2788 wrote to memory of 2616	2788	915934cf49d064582bfded5e2759bccc_JaffaCakes118.exe	85
PID 2788 wrote to memory of 2616	2788	915934cf49d064582bfded5e2759bccc_JaffaCakes118.exe	85
PID 2788 wrote to memory of 2616	2788	915934cf49d064582bfded5e2759bccc_JaffaCakes118.exe	85
PID 2788 wrote to memory of 2616	2788	915934cf49d064582bfded5e2759bccc_JaffaCakes118.exe	85
PID 2788 wrote to memory of 2616	2788	915934cf49d064582bfded5e2759bccc_JaffaCakes118.exe	85
PID 2788 wrote to memory of 2616	2788	915934cf49d064582bfded5e2759bccc_JaffaCakes118.exe	85
PID 2616 wrote to memory of 2364	2616	915934cf49d064582bfded5e2759bccc_JaffaCakes118.exe	86
PID 2616 wrote to memory of 2364	2616	915934cf49d064582bfded5e2759bccc_JaffaCakes118.exe	86
PID 2616 wrote to memory of 2364	2616	915934cf49d064582bfded5e2759bccc_JaffaCakes118.exe	86
PID 2616 wrote to memory of 2364	2616	915934cf49d064582bfded5e2759bccc_JaffaCakes118.exe	86
PID 2616 wrote to memory of 1560	2616	915934cf49d064582bfded5e2759bccc_JaffaCakes118.exe	87
PID 2616 wrote to memory of 1560	2616	915934cf49d064582bfded5e2759bccc_JaffaCakes118.exe	87
PID 2616 wrote to memory of 1560	2616	915934cf49d064582bfded5e2759bccc_JaffaCakes118.exe	87

C:\Users\Admin\AppData\Local\Temp\915934cf49d064582bfded5e2759bccc_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\915934cf49d064582bfded5e2759bccc_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2996
- C:\Users\Admin\AppData\Local\Temp\915934cf49d064582bfded5e2759bccc_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\915934cf49d064582bfded5e2759bccc_JaffaCakes118.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2788
- - C:\Users\Admin\AppData\Local\Temp\915934cf49d064582bfded5e2759bccc_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\915934cf49d064582bfded5e2759bccc_JaffaCakes118.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2616
  - - C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      4⤵
      System Location Discovery: System Language Discovery
      PID:2364
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2364 -s 480
        5⤵
        Program crash
        
        PID:4196
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2364 -s 488
        5⤵
        Program crash
        
        PID:3996
  - - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
      4⤵
      PID:1560

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2364 -ip 2364
1⤵
PID:4928

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2364 -ip 2364
1⤵
PID:3768

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

C:\Users\Admin\AppData\Local\Temp\msdump150auro.tmp

Filesize
2KB

MD5
53ac8d8ba7ab68fff3c9bd46716dfbfb

SHA1
142a5fd9fe5e930f0b5b40a684caaae181dc83a2

SHA256
c614300d8ace1b196a2a2701b27562df0d9371a6ca4d3d147feec699eca6d17f

SHA512
1e4a66a19d6c76ea3a8d3548b0cab043213c49082ea6c12383a6754a03ffe13b9767ab63184f5d211a3ee276af484ede5f3bd5340ce441aac9b6173f1bfe3a7f

Download Submit
memory/2364-15-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2364-16-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2616-8-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2616-12-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2616-14-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2616-13-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2788-4-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2788-6-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2788-7-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2788-10-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download

Analysis

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