xtremerat | fcd4880d10abb4ae5997667348b9e53488d5dbe8c08d76f6e2dd98e6e1f410c8

General

Target
fcd4880d10abb4ae5997667348b9e53488d5dbe8c08d76f6e2dd98e6e1f410c8.exe
Size 95KB
Sample240322-crvcwshc8x
SHA256 fcd4880d10abb4ae5997667348b9e53488d5dbe8c08d76f6e2dd98e6e1f410c8
MD5 f632b3512ca905234c92501dd36982df
SHA1 001b96b43a8b0f06c9d766b070a3aee3ac59d766
SHA512 89ff1b8014d5e3202657346685b4176c5321a0d07b06cb6fa925eee9dafda69d60b4ab1df915ac035d99909da743d1362aa2dafc769445a9dad3e93c0c974b02
SSDEEP 1536:Hsq+QV4rObAdXWpf/y+YaIBxom1kwBxom1kMoEnNf:K44rj/laIDnkwDnkMo
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

Family

C2

Detect XtremeRAT payload 7 IoCs

resource	yara_rule
behavioral2/memory/4944-0-0x0000000010000000-0x0000000010051000-memory.dmp	family_xtremerat
behavioral2/memory/2248-1-0x0000000010000000-0x0000000010051000-memory.dmp	family_xtremerat
behavioral2/memory/2472-2-0x0000000010000000-0x0000000010051000-memory.dmp	family_xtremerat
behavioral2/memory/2248-6-0x0000000010000000-0x0000000010051000-memory.dmp	family_xtremerat
behavioral2/memory/2248-7-0x0000000010000000-0x0000000010051000-memory.dmp	family_xtremerat
behavioral2/memory/2248-9-0x0000000010000000-0x0000000010051000-memory.dmp	family_xtremerat
behavioral2/memory/4944-11-0x0000000010000000-0x0000000010051000-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

Modifies Installed Components in the registry 2 TTPs 2 IoCs

Registry Run Keys / Startup Folder

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{76DDE5X4-WQ7N-4XEY-J3LH-E8O2SB3CN71B}\StubPath = "C:\\Windows\\system32\\Windows\\svchost restart"	svchost.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{76DDE5X4-WQ7N-4XEY-J3LH-E8O2SB3CN71B}	svchost.exe

Adds Run key to start application 2 TTPs 2 IoCs

Registry Run Keys / Startup Folder

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Atualizar = "C:\\Windows\\system32\\Windows\\svchost"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows = "C:\\Windows\\system32\\Windows\\svchost"	svchost.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Windows\svchost	svchost.exe
File created	C:\Windows\SysWOW64\Windows\svchost	svchost.exe
File opened for modification	C:\Windows\SysWOW64\Windows\	svchost.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 3 IoCs

pid	pid_target	Process	procid_target
372	4944	WerFault.exe	98
4092	2248	WerFault.exe	99
3428	4944	WerFault.exe	98

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2248	svchost.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2472 wrote to memory of 4944	2472	fcd4880d10abb4ae5997667348b9e53488d5dbe8c08d76f6e2dd98e6e1f410c8.exe	98
PID 2472 wrote to memory of 4944	2472	fcd4880d10abb4ae5997667348b9e53488d5dbe8c08d76f6e2dd98e6e1f410c8.exe	98
PID 2472 wrote to memory of 4944	2472	fcd4880d10abb4ae5997667348b9e53488d5dbe8c08d76f6e2dd98e6e1f410c8.exe	98
PID 2472 wrote to memory of 4944	2472	fcd4880d10abb4ae5997667348b9e53488d5dbe8c08d76f6e2dd98e6e1f410c8.exe	98
PID 2472 wrote to memory of 2248	2472	fcd4880d10abb4ae5997667348b9e53488d5dbe8c08d76f6e2dd98e6e1f410c8.exe	99
PID 2472 wrote to memory of 2248	2472	fcd4880d10abb4ae5997667348b9e53488d5dbe8c08d76f6e2dd98e6e1f410c8.exe	99
PID 2472 wrote to memory of 2248	2472	fcd4880d10abb4ae5997667348b9e53488d5dbe8c08d76f6e2dd98e6e1f410c8.exe	99
PID 2472 wrote to memory of 2248	2472	fcd4880d10abb4ae5997667348b9e53488d5dbe8c08d76f6e2dd98e6e1f410c8.exe	99

C:\Users\Admin\AppData\Local\Temp\fcd4880d10abb4ae5997667348b9e53488d5dbe8c08d76f6e2dd98e6e1f410c8.exe
"C:\Users\Admin\AppData\Local\Temp\fcd4880d10abb4ae5997667348b9e53488d5dbe8c08d76f6e2dd98e6e1f410c8.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2472
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  PID:4944
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4944 -s 472
    3⤵
    - Program crash
    PID:372
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4944 -s 488
    3⤵
    - Program crash
    PID:3428
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Modifies Installed Components in the registry
  - Adds Run key to start application
  - Drops file in System32 directory
  - Suspicious use of SetWindowsHookEx
  PID:2248
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2248 -s 980
    3⤵
    - Program crash
    PID:4092

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4944 -ip 4944
1⤵
PID:3436

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 2248 -ip 2248
1⤵
PID:4840

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4944 -ip 4944
1⤵
PID:2716

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3624 --field-trial-handle=2252,i,16504368816373493055,9578615028378602855,262144 --variations-seed-version /prefetch:8
1⤵
PID:4976