xtremerat | 1d92331566947f3ad5de2dcb39ac517bfe04019f834a3a0550f5cbd63b01e8ae

General

Target

JaffaCakes118_53e7f05105e6f9c22b176127a182d083.exe
Size

86KB
MD5

53e7f05105e6f9c22b176127a182d083
SHA1

408f47cd823c03084cccc33d8abeb566ceef950f
SHA256

1d92331566947f3ad5de2dcb39ac517bfe04019f834a3a0550f5cbd63b01e8ae
SHA512

e00815c12f060a821cf8e935f240b88fc94c5455a8f14ddd2f2d65775d84fb4e34b306db0a75396762a2eb08d312640a2bbf71f5e7889799782c8755efbcd745
SSDEEP

1536:4lvkzvff1nEFAEvBg3Z6WimCcsPMKTlUp1XKt4747H6lNvJiFI:4lvk7fCFA+C3wPDcc/ToxkONvMF

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

C2

kurvageci.sytes.net

Signatures

Detect XtremeRAT payload 5 IoCs

resource	yara_rule
behavioral2/memory/4932-3-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4728-5-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4932-6-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4728-8-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4932-9-0x0000000010000000-0x000000001004D000-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 4520 set thread context of 4932	4520	JaffaCakes118_53e7f05105e6f9c22b176127a182d083.exe	83

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4932-0-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4932-2-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4932-4-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4932-3-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4728-5-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4932-6-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4728-8-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4932-9-0x0000000010000000-0x000000001004D000-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
2164	4728	WerFault.exe	84
3996	4728	WerFault.exe	84

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_53e7f05105e6f9c22b176127a182d083.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_53e7f05105e6f9c22b176127a182d083.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4932	JaffaCakes118_53e7f05105e6f9c22b176127a182d083.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4520 wrote to memory of 4932	4520	JaffaCakes118_53e7f05105e6f9c22b176127a182d083.exe	83
PID 4520 wrote to memory of 4932	4520	JaffaCakes118_53e7f05105e6f9c22b176127a182d083.exe	83
PID 4520 wrote to memory of 4932	4520	JaffaCakes118_53e7f05105e6f9c22b176127a182d083.exe	83
PID 4520 wrote to memory of 4932	4520	JaffaCakes118_53e7f05105e6f9c22b176127a182d083.exe	83
PID 4520 wrote to memory of 4932	4520	JaffaCakes118_53e7f05105e6f9c22b176127a182d083.exe	83
PID 4520 wrote to memory of 4932	4520	JaffaCakes118_53e7f05105e6f9c22b176127a182d083.exe	83
PID 4520 wrote to memory of 4932	4520	JaffaCakes118_53e7f05105e6f9c22b176127a182d083.exe	83
PID 4520 wrote to memory of 4932	4520	JaffaCakes118_53e7f05105e6f9c22b176127a182d083.exe	83
PID 4932 wrote to memory of 4728	4932	JaffaCakes118_53e7f05105e6f9c22b176127a182d083.exe	84
PID 4932 wrote to memory of 4728	4932	JaffaCakes118_53e7f05105e6f9c22b176127a182d083.exe	84
PID 4932 wrote to memory of 4728	4932	JaffaCakes118_53e7f05105e6f9c22b176127a182d083.exe	84
PID 4932 wrote to memory of 4728	4932	JaffaCakes118_53e7f05105e6f9c22b176127a182d083.exe	84

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_53e7f05105e6f9c22b176127a182d083.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_53e7f05105e6f9c22b176127a182d083.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4520
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_53e7f05105e6f9c22b176127a182d083.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_53e7f05105e6f9c22b176127a182d083.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4932
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4728
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4728 -s 480
      4⤵
      Program crash
      PID:2164
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4728 -s 488
      4⤵
      Program crash
      PID:3996

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4728 -ip 4728
1⤵
PID:4776

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 4728 -ip 4728
1⤵
PID:2300

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

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Downloads

memory/4728-5-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4728-8-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4932-0-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4932-2-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4932-4-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4932-3-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4932-6-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4932-9-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download

Analysis

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