xtremerat | 6876d2098a793e617e70fde9b63f7fb90b0b48c578d374c0b3d3112ace92e412

General

Target

JaffaCakes118_a83a5279d3f9d3af7cf9d2e19eed017d.exe
Size

593KB
MD5

a83a5279d3f9d3af7cf9d2e19eed017d
SHA1

00a7f91a74e9fbdf83e3351ab989e15ce452f093
SHA256

6876d2098a793e617e70fde9b63f7fb90b0b48c578d374c0b3d3112ace92e412
SHA512

1f38cdc07b56c8d9e11a664f0d6900a2cc0293ecd50c8df4d8f73f6af328943f51d7391415caf9b305071618a96d404101101a093747452565c1048c2e13d57b
SSDEEP

12288:9euTIgKKM4YrcDCI9j0KGSFon+BN+OGtQiFnXh:ErR1BI9j0TSRXunx

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

C2

momo44.no-ip.biz

Signatures

Detect XtremeRAT payload 3 IoCs

resource	yara_rule
behavioral2/memory/2324-19-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/2892-21-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/2892-24-0x0000000010000000-0x000000001004D000-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 2272 set thread context of 2324	2272	JaffaCakes118_a83a5279d3f9d3af7cf9d2e19eed017d.exe	84

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2324-13-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/2324-15-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/2324-19-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/2892-21-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/2892-24-0x0000000010000000-0x000000001004D000-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
392	2892	WerFault.exe	86
388	2892	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_a83a5279d3f9d3af7cf9d2e19eed017d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_a83a5279d3f9d3af7cf9d2e19eed017d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2272	JaffaCakes118_a83a5279d3f9d3af7cf9d2e19eed017d.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2272 wrote to memory of 2324	2272	JaffaCakes118_a83a5279d3f9d3af7cf9d2e19eed017d.exe	84
PID 2272 wrote to memory of 2324	2272	JaffaCakes118_a83a5279d3f9d3af7cf9d2e19eed017d.exe	84
PID 2272 wrote to memory of 2324	2272	JaffaCakes118_a83a5279d3f9d3af7cf9d2e19eed017d.exe	84
PID 2272 wrote to memory of 2324	2272	JaffaCakes118_a83a5279d3f9d3af7cf9d2e19eed017d.exe	84
PID 2272 wrote to memory of 2324	2272	JaffaCakes118_a83a5279d3f9d3af7cf9d2e19eed017d.exe	84
PID 2272 wrote to memory of 2324	2272	JaffaCakes118_a83a5279d3f9d3af7cf9d2e19eed017d.exe	84
PID 2272 wrote to memory of 2324	2272	JaffaCakes118_a83a5279d3f9d3af7cf9d2e19eed017d.exe	84
PID 2272 wrote to memory of 2324	2272	JaffaCakes118_a83a5279d3f9d3af7cf9d2e19eed017d.exe	84
PID 2272 wrote to memory of 2324	2272	JaffaCakes118_a83a5279d3f9d3af7cf9d2e19eed017d.exe	84
PID 2272 wrote to memory of 2324	2272	JaffaCakes118_a83a5279d3f9d3af7cf9d2e19eed017d.exe	84
PID 2272 wrote to memory of 2324	2272	JaffaCakes118_a83a5279d3f9d3af7cf9d2e19eed017d.exe	84
PID 2324 wrote to memory of 2892	2324	JaffaCakes118_a83a5279d3f9d3af7cf9d2e19eed017d.exe	86
PID 2324 wrote to memory of 2892	2324	JaffaCakes118_a83a5279d3f9d3af7cf9d2e19eed017d.exe	86
PID 2324 wrote to memory of 2892	2324	JaffaCakes118_a83a5279d3f9d3af7cf9d2e19eed017d.exe	86
PID 2324 wrote to memory of 2892	2324	JaffaCakes118_a83a5279d3f9d3af7cf9d2e19eed017d.exe	86
PID 2324 wrote to memory of 4600	2324	JaffaCakes118_a83a5279d3f9d3af7cf9d2e19eed017d.exe	88
PID 2324 wrote to memory of 4600	2324	JaffaCakes118_a83a5279d3f9d3af7cf9d2e19eed017d.exe	88
PID 2324 wrote to memory of 4600	2324	JaffaCakes118_a83a5279d3f9d3af7cf9d2e19eed017d.exe	88

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a83a5279d3f9d3af7cf9d2e19eed017d.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a83a5279d3f9d3af7cf9d2e19eed017d.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2272
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a83a5279d3f9d3af7cf9d2e19eed017d.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a83a5279d3f9d3af7cf9d2e19eed017d.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2324
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2892
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2892 -s 480
      4⤵
      Program crash
      PID:392
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2892 -s 500
      4⤵
      Program crash
      PID:388
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
    3⤵
    PID:4600

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 2892 -ip 2892
1⤵
PID:2528

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 2892 -ip 2892
1⤵
PID:2876

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/2272-10-0x0000000076490000-0x0000000076580000-memory.dmp

Filesize
960KB

Download
memory/2272-3-0x00000000023E0000-0x00000000023F0000-memory.dmp

Filesize
64KB

Download
memory/2272-0-0x0000000000670000-0x0000000000671000-memory.dmp

Filesize
4KB

Download
memory/2272-7-0x00000000764B0000-0x00000000764B1000-memory.dmp

Filesize
4KB

Download
memory/2272-6-0x0000000000680000-0x0000000000690000-memory.dmp

Filesize
64KB

Download
memory/2272-5-0x0000000002310000-0x0000000002320000-memory.dmp

Filesize
64KB

Download
memory/2272-4-0x0000000077062000-0x0000000077063000-memory.dmp

Filesize
4KB

Download
memory/2272-17-0x0000000002250000-0x000000000229E000-memory.dmp

Filesize
312KB

Download
memory/2272-8-0x0000000076490000-0x0000000076580000-memory.dmp

Filesize
960KB

Download
memory/2272-18-0x0000000076490000-0x0000000076580000-memory.dmp

Filesize
960KB

Download
memory/2272-2-0x0000000002310000-0x0000000002320000-memory.dmp

Filesize
64KB

Download
memory/2272-1-0x0000000002250000-0x000000000229E000-memory.dmp

Filesize
312KB

Download
memory/2272-9-0x0000000076490000-0x0000000076580000-memory.dmp

Filesize
960KB

Download
memory/2272-16-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/2324-20-0x0000000076490000-0x0000000076580000-memory.dmp

Filesize
960KB

Download
memory/2324-19-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2324-15-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2324-23-0x0000000076490000-0x0000000076580000-memory.dmp

Filesize
960KB

Download
memory/2324-13-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2892-25-0x0000000076490000-0x0000000076580000-memory.dmp

Filesize
960KB

Download
memory/2892-21-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2892-22-0x0000000076490000-0x0000000076580000-memory.dmp

Filesize
960KB

Download
memory/2892-24-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download

Analysis

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