xtremerat | f823db99dc639007585ee0c55ee58628955b99224bfe637e594e83a96989b790

General

Target

f823db99dc639007585ee0c55ee58628955b99224bfe637e594e83a96989b790.exe
Size

125KB
MD5

3800d6dd51ad7c600449b946f3a480ea
SHA1

415160495701503f6741232d58a0796c688e151f
SHA256

f823db99dc639007585ee0c55ee58628955b99224bfe637e594e83a96989b790
SHA512

edf76d380a98f8c1df535ef41e37bc4ca00129d8492d59837c5ecf9161121c8e406ee1e32f5c247233e68daab378f8c91d68a649d1dbf51564e9774fabe5d9a3
SSDEEP

3072:d0PpDmmBFH6d23ggFLnfDtcwZp6tZ1krgQte0pXNI:EFaFghpcwZp6Bk0Q13I

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

C2

alnmroood.zapto.org

Signatures

Detect XtremeRAT payload 4 IoCs

resource	yara_rule
behavioral2/memory/3996-7-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/3996-8-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4900-10-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4900-11-0x0000000010000000-0x000000001004D000-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 2472 set thread context of 3996	2472	f823db99dc639007585ee0c55ee58628955b99224bfe637e594e83a96989b790.exe	84

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3996-3-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/3996-7-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/3996-8-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/3996-6-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4900-10-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4900-11-0x0000000010000000-0x000000001004D000-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
2072	4900	WerFault.exe	85
3600	4900	WerFault.exe	85

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	f823db99dc639007585ee0c55ee58628955b99224bfe637e594e83a96989b790.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f823db99dc639007585ee0c55ee58628955b99224bfe637e594e83a96989b790.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2472	f823db99dc639007585ee0c55ee58628955b99224bfe637e594e83a96989b790.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2472 wrote to memory of 4296	2472	f823db99dc639007585ee0c55ee58628955b99224bfe637e594e83a96989b790.exe	83
PID 2472 wrote to memory of 4296	2472	f823db99dc639007585ee0c55ee58628955b99224bfe637e594e83a96989b790.exe	83
PID 2472 wrote to memory of 4296	2472	f823db99dc639007585ee0c55ee58628955b99224bfe637e594e83a96989b790.exe	83
PID 2472 wrote to memory of 3996	2472	f823db99dc639007585ee0c55ee58628955b99224bfe637e594e83a96989b790.exe	84
PID 2472 wrote to memory of 3996	2472	f823db99dc639007585ee0c55ee58628955b99224bfe637e594e83a96989b790.exe	84
PID 2472 wrote to memory of 3996	2472	f823db99dc639007585ee0c55ee58628955b99224bfe637e594e83a96989b790.exe	84
PID 2472 wrote to memory of 3996	2472	f823db99dc639007585ee0c55ee58628955b99224bfe637e594e83a96989b790.exe	84
PID 2472 wrote to memory of 3996	2472	f823db99dc639007585ee0c55ee58628955b99224bfe637e594e83a96989b790.exe	84
PID 2472 wrote to memory of 3996	2472	f823db99dc639007585ee0c55ee58628955b99224bfe637e594e83a96989b790.exe	84
PID 2472 wrote to memory of 3996	2472	f823db99dc639007585ee0c55ee58628955b99224bfe637e594e83a96989b790.exe	84
PID 2472 wrote to memory of 3996	2472	f823db99dc639007585ee0c55ee58628955b99224bfe637e594e83a96989b790.exe	84
PID 3996 wrote to memory of 4900	3996	f823db99dc639007585ee0c55ee58628955b99224bfe637e594e83a96989b790.exe	85
PID 3996 wrote to memory of 4900	3996	f823db99dc639007585ee0c55ee58628955b99224bfe637e594e83a96989b790.exe	85
PID 3996 wrote to memory of 4900	3996	f823db99dc639007585ee0c55ee58628955b99224bfe637e594e83a96989b790.exe	85
PID 3996 wrote to memory of 4900	3996	f823db99dc639007585ee0c55ee58628955b99224bfe637e594e83a96989b790.exe	85
PID 3996 wrote to memory of 3840	3996	f823db99dc639007585ee0c55ee58628955b99224bfe637e594e83a96989b790.exe	86
PID 3996 wrote to memory of 3840	3996	f823db99dc639007585ee0c55ee58628955b99224bfe637e594e83a96989b790.exe	86
PID 3996 wrote to memory of 3840	3996	f823db99dc639007585ee0c55ee58628955b99224bfe637e594e83a96989b790.exe	86

C:\Users\Admin\AppData\Local\Temp\f823db99dc639007585ee0c55ee58628955b99224bfe637e594e83a96989b790.exe
"C:\Users\Admin\AppData\Local\Temp\f823db99dc639007585ee0c55ee58628955b99224bfe637e594e83a96989b790.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2472
- C:\Users\Admin\AppData\Local\Temp\f823db99dc639007585ee0c55ee58628955b99224bfe637e594e83a96989b790.exe
  f823db99dc639007585ee0c55ee58628955b99224bfe637e594e83a96989b790.exe
  2⤵
  PID:4296
- C:\Users\Admin\AppData\Local\Temp\f823db99dc639007585ee0c55ee58628955b99224bfe637e594e83a96989b790.exe
  f823db99dc639007585ee0c55ee58628955b99224bfe637e594e83a96989b790.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3996
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4900
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4900 -s 480
      4⤵
      Program crash
      PID:2072
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4900 -s 476
      4⤵
      Program crash
      PID:3600
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
    3⤵
    PID:3840

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4900 -ip 4900
1⤵
PID:2360

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 4900 -ip 4900
1⤵
PID:3160

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/2472-0-0x0000000074BC2000-0x0000000074BC3000-memory.dmp

Filesize
4KB

Download
memory/2472-1-0x0000000074BC0000-0x0000000075171000-memory.dmp

Filesize
5.7MB

Download
memory/2472-2-0x0000000074BC0000-0x0000000075171000-memory.dmp

Filesize
5.7MB

Download
memory/2472-9-0x0000000074BC0000-0x0000000075171000-memory.dmp

Filesize
5.7MB

Download
memory/3996-3-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/3996-7-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/3996-8-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/3996-6-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4900-10-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4900-11-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download

Analysis

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