xtremerat | 10554d88a00779feeb408ddf9d3fb889d9929074be46120a9d9e3d6256bc2d34

General

Target

JaffaCakes118_41ca75c550098246251b4309e918d6fe.exe
Size

542KB
MD5

41ca75c550098246251b4309e918d6fe
SHA1

95f3da4a2375a7377d5232a5361284c02039f39e
SHA256

10554d88a00779feeb408ddf9d3fb889d9929074be46120a9d9e3d6256bc2d34
SHA512

a283de7c8c01518e07d233a2a3751c82db9754ee78fe83e0d061b37350997e3684a6181e5fa2f00b8d4804dc04398fd6353facb855e1c25c3c962662cf2d193a
SSDEEP

12288:KyXYk2KShNsrkzyo47oQN6CDK1NpjocYZYamBoyXKU:KS2Jyo7QNzG7q3IB/aU

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

C2

xstrema.no-ip.org

Signatures

Detect XtremeRAT payload 3 IoCs

resource	yara_rule
behavioral2/memory/4144-12-0x0000000010000000-0x000000001004E000-memory.dmp	family_xtremerat
behavioral2/memory/3724-15-0x0000000010000000-0x000000001004E000-memory.dmp	family_xtremerat
behavioral2/memory/3724-16-0x0000000010000000-0x000000001004E000-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 NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
4588	JaffaCakes118_41ca75c550098246251b4309e918d6fe.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4588 set thread context of 4144	4588	JaffaCakes118_41ca75c550098246251b4309e918d6fe.exe	89

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4144-6-0x0000000010000000-0x000000001004E000-memory.dmp	upx
behavioral2/memory/4144-8-0x0000000010000000-0x000000001004E000-memory.dmp	upx
behavioral2/memory/4144-12-0x0000000010000000-0x000000001004E000-memory.dmp	upx
behavioral2/memory/3724-15-0x0000000010000000-0x000000001004E000-memory.dmp	upx
behavioral2/memory/3724-16-0x0000000010000000-0x000000001004E000-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
4892	3724	WerFault.exe	90
1556	3724	WerFault.exe	90

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_41ca75c550098246251b4309e918d6fe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_41ca75c550098246251b4309e918d6fe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4588	JaffaCakes118_41ca75c550098246251b4309e918d6fe.exe
4588	JaffaCakes118_41ca75c550098246251b4309e918d6fe.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 4588 wrote to memory of 4144	4588	JaffaCakes118_41ca75c550098246251b4309e918d6fe.exe	89
PID 4588 wrote to memory of 4144	4588	JaffaCakes118_41ca75c550098246251b4309e918d6fe.exe	89
PID 4588 wrote to memory of 4144	4588	JaffaCakes118_41ca75c550098246251b4309e918d6fe.exe	89
PID 4588 wrote to memory of 4144	4588	JaffaCakes118_41ca75c550098246251b4309e918d6fe.exe	89
PID 4588 wrote to memory of 4144	4588	JaffaCakes118_41ca75c550098246251b4309e918d6fe.exe	89
PID 4588 wrote to memory of 4144	4588	JaffaCakes118_41ca75c550098246251b4309e918d6fe.exe	89
PID 4588 wrote to memory of 4144	4588	JaffaCakes118_41ca75c550098246251b4309e918d6fe.exe	89
PID 4588 wrote to memory of 4144	4588	JaffaCakes118_41ca75c550098246251b4309e918d6fe.exe	89
PID 4588 wrote to memory of 4144	4588	JaffaCakes118_41ca75c550098246251b4309e918d6fe.exe	89
PID 4144 wrote to memory of 3724	4144	JaffaCakes118_41ca75c550098246251b4309e918d6fe.exe	90
PID 4144 wrote to memory of 3724	4144	JaffaCakes118_41ca75c550098246251b4309e918d6fe.exe	90
PID 4144 wrote to memory of 3724	4144	JaffaCakes118_41ca75c550098246251b4309e918d6fe.exe	90
PID 4144 wrote to memory of 3724	4144	JaffaCakes118_41ca75c550098246251b4309e918d6fe.exe	90
PID 4144 wrote to memory of 5048	4144	JaffaCakes118_41ca75c550098246251b4309e918d6fe.exe	91
PID 4144 wrote to memory of 5048	4144	JaffaCakes118_41ca75c550098246251b4309e918d6fe.exe	91
PID 4144 wrote to memory of 5048	4144	JaffaCakes118_41ca75c550098246251b4309e918d6fe.exe	91

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_41ca75c550098246251b4309e918d6fe.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_41ca75c550098246251b4309e918d6fe.exe"
1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4588
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_41ca75c550098246251b4309e918d6fe.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_41ca75c550098246251b4309e918d6fe.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4144
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3724
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3724 -s 472
      4⤵
      Program crash
      PID:4892
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3724 -s 504
      4⤵
      Program crash
      PID:1556
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
    3⤵
    PID:5048

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3724 -ip 3724
1⤵
PID:5104

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 3724 -ip 3724
1⤵
PID:2848

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/3724-15-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/3724-16-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/4144-6-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/4144-8-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/4144-12-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/4588-0-0x0000000000400000-0x00000000005BA000-memory.dmp

Filesize
1.7MB

Download
memory/4588-1-0x0000000000400000-0x00000000005BA000-memory.dmp

Filesize
1.7MB

Download
memory/4588-4-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/4588-14-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/4588-13-0x0000000000400000-0x00000000005BA000-memory.dmp

Filesize
1.7MB

Download

Analysis

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