xtremerat | f2fd3688ebb5844cdf9b104f30b9f3051c830416749543d4ad8a47ab60e51b90

General

Target

40f2eb5bb4ec670ab25e0a610646d347_JaffaCakes118.exe
Size

647KB
MD5

40f2eb5bb4ec670ab25e0a610646d347
SHA1

c72239eb4d39117eb5ef17f73d06803ccc912ebe
SHA256

f2fd3688ebb5844cdf9b104f30b9f3051c830416749543d4ad8a47ab60e51b90
SHA512

2f2aad8169a41ddb8b948fcd279b766abf2750caed32a9110f4352ec03dd11363efb44fbd588465cd781381fa96a576c0e004a3a6a1de4495efccb38eb7c8612
SSDEEP

12288:jQZuO/uo7YNQN2YcKify3iC8ut0i1oQjUZbvFFF/Dr5uiuJ4db:jnuHwQgsiK3AcIXFFf5uiuEb

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

C2

xstrema.no-ip.org

Signatures

Detect XtremeRAT payload 5 IoCs

resource	yara_rule
behavioral2/memory/4636-10-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4636-9-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/440-13-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4636-14-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/440-15-0x0000000010000000-0x000000001004D000-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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5028 set thread context of 4636	5028	40f2eb5bb4ec670ab25e0a610646d347_JaffaCakes118.exe	85

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4636-6-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4636-8-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4636-10-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4636-9-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/440-13-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4636-14-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/440-15-0x0000000010000000-0x000000001004D000-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
1872	440	WerFault.exe	87
4424	440	WerFault.exe	87

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	40f2eb5bb4ec670ab25e0a610646d347_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	40f2eb5bb4ec670ab25e0a610646d347_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5028	40f2eb5bb4ec670ab25e0a610646d347_JaffaCakes118.exe
5028	40f2eb5bb4ec670ab25e0a610646d347_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 5028 wrote to memory of 4636	5028	40f2eb5bb4ec670ab25e0a610646d347_JaffaCakes118.exe	85
PID 5028 wrote to memory of 4636	5028	40f2eb5bb4ec670ab25e0a610646d347_JaffaCakes118.exe	85
PID 5028 wrote to memory of 4636	5028	40f2eb5bb4ec670ab25e0a610646d347_JaffaCakes118.exe	85
PID 5028 wrote to memory of 4636	5028	40f2eb5bb4ec670ab25e0a610646d347_JaffaCakes118.exe	85
PID 5028 wrote to memory of 4636	5028	40f2eb5bb4ec670ab25e0a610646d347_JaffaCakes118.exe	85
PID 5028 wrote to memory of 4636	5028	40f2eb5bb4ec670ab25e0a610646d347_JaffaCakes118.exe	85
PID 5028 wrote to memory of 4636	5028	40f2eb5bb4ec670ab25e0a610646d347_JaffaCakes118.exe	85
PID 5028 wrote to memory of 4636	5028	40f2eb5bb4ec670ab25e0a610646d347_JaffaCakes118.exe	85
PID 4636 wrote to memory of 440	4636	40f2eb5bb4ec670ab25e0a610646d347_JaffaCakes118.exe	87
PID 4636 wrote to memory of 440	4636	40f2eb5bb4ec670ab25e0a610646d347_JaffaCakes118.exe	87
PID 4636 wrote to memory of 440	4636	40f2eb5bb4ec670ab25e0a610646d347_JaffaCakes118.exe	87
PID 4636 wrote to memory of 440	4636	40f2eb5bb4ec670ab25e0a610646d347_JaffaCakes118.exe	87
PID 4636 wrote to memory of 936	4636	40f2eb5bb4ec670ab25e0a610646d347_JaffaCakes118.exe	88
PID 4636 wrote to memory of 936	4636	40f2eb5bb4ec670ab25e0a610646d347_JaffaCakes118.exe	88
PID 4636 wrote to memory of 936	4636	40f2eb5bb4ec670ab25e0a610646d347_JaffaCakes118.exe	88

C:\Users\Admin\AppData\Local\Temp\40f2eb5bb4ec670ab25e0a610646d347_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\40f2eb5bb4ec670ab25e0a610646d347_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5028
- C:\Users\Admin\AppData\Local\Temp\40f2eb5bb4ec670ab25e0a610646d347_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\40f2eb5bb4ec670ab25e0a610646d347_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4636
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:440
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 440 -s 480
      4⤵
      Program crash
      PID:1872
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 440 -s 500
      4⤵
      Program crash
      PID:4424
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
    3⤵
    PID:936

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 440 -ip 440
1⤵
PID:3872

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 440 -ip 440
1⤵
PID:4776

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/440-13-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/440-15-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4636-6-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4636-8-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4636-10-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4636-9-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4636-14-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/5028-0-0x0000000000400000-0x00000000007B0000-memory.dmp

Filesize
3.7MB

Download
memory/5028-12-0x0000000000400000-0x00000000007B0000-memory.dmp

Filesize
3.7MB

Download

Analysis

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