xtremerat | a42e3cab17999bcf569f14a234d2507587b035c53759cb3a2ccb313571a3f855

Analysis

max time kernel
152s
max time network
158s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
30-10-2022 18:58

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General

Target

a42e3cab17999bcf569f14a234d2507587b035c53759cb3a2ccb313571a3f855.exe
Size

66KB
MD5

82d231762e54f8d742dd8cecdb66babb
SHA1

a31b7f96dd90bb375ae0e32ce3705a52de98e328
SHA256

a42e3cab17999bcf569f14a234d2507587b035c53759cb3a2ccb313571a3f855
SHA512

38d2b3b9ed1de96d0c08aaafda9db8b07adec40e744f66516636fbd77345669c961d4a87ddae7585c0766bebf56a7a17d428929e63d5d78efcd503fa53185301
SSDEEP

768:G9m1Sq4NQrr2sH1U8z05DeeQuMVTyN8ipHo37Vmd6AtXVtWA3bAk7voNwKSiWIkZ:jsq+Q5aZQuIyJp0mgAhF3UtNw1I

Score

10^/10

xtremerat persistence rat spyware

Malware Config

Extracted

Family

xtremerat

microsoft.staticcling.org

Signatures

Detect XtremeRAT payload 2 IoCs

resource	yara_rule
behavioral1/memory/1480-57-0x0000000000000000-mapping.dmp	family_xtremerat
behavioral1/memory/1480-59-0x0000000010000000-0x0000000010048000-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

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{G6BN7M0N-VV33-2O3M-BXBM-L074IAR74W50}	a42e3cab17999bcf569f14a234d2507587b035c53759cb3a2ccb313571a3f855.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{G6BN7M0N-VV33-2O3M-BXBM-L074IAR74W50}\StubPath = "C:\\Windows\\system32\\avgnt.exe restart"	a42e3cab17999bcf569f14a234d2507587b035c53759cb3a2ccb313571a3f855.exe

Adds Run key to start application 2 TTPs 5 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\jusched.exe = "C:\\Windows\\system32\\avgnt.exe"	a42e3cab17999bcf569f14a234d2507587b035c53759cb3a2ccb313571a3f855.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run	a42e3cab17999bcf569f14a234d2507587b035c53759cb3a2ccb313571a3f855.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\jusched.exe = "C:\\Windows\\system32\\avgnt.exe"	a42e3cab17999bcf569f14a234d2507587b035c53759cb3a2ccb313571a3f855.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\jusched.exe = "%jusched%"	a42e3cab17999bcf569f14a234d2507587b035c53759cb3a2ccb313571a3f855.exe
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	a42e3cab17999bcf569f14a234d2507587b035c53759cb3a2ccb313571a3f855.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\avgnt.exe	a42e3cab17999bcf569f14a234d2507587b035c53759cb3a2ccb313571a3f855.exe
File created	C:\Windows\SysWOW64\avgnt.exe	a42e3cab17999bcf569f14a234d2507587b035c53759cb3a2ccb313571a3f855.exe
File opened for modification	C:\Windows\SysWOW64\	a42e3cab17999bcf569f14a234d2507587b035c53759cb3a2ccb313571a3f855.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 968 wrote to memory of 1480	968	a42e3cab17999bcf569f14a234d2507587b035c53759cb3a2ccb313571a3f855.exe	27
PID 968 wrote to memory of 1480	968	a42e3cab17999bcf569f14a234d2507587b035c53759cb3a2ccb313571a3f855.exe	27
PID 968 wrote to memory of 1480	968	a42e3cab17999bcf569f14a234d2507587b035c53759cb3a2ccb313571a3f855.exe	27
PID 968 wrote to memory of 1480	968	a42e3cab17999bcf569f14a234d2507587b035c53759cb3a2ccb313571a3f855.exe	27
PID 968 wrote to memory of 1480	968	a42e3cab17999bcf569f14a234d2507587b035c53759cb3a2ccb313571a3f855.exe	27

C:\Users\Admin\AppData\Local\Temp\a42e3cab17999bcf569f14a234d2507587b035c53759cb3a2ccb313571a3f855.exe
"C:\Users\Admin\AppData\Local\Temp\a42e3cab17999bcf569f14a234d2507587b035c53759cb3a2ccb313571a3f855.exe"
1⤵
- Modifies Installed Components in the registry
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:968
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  PID:1480

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/968-54-0x0000000076831000-0x0000000076833000-memory.dmp

Filesize
8KB

Download
memory/1480-55-0x0000000010000000-0x0000000010048000-memory.dmp

Filesize
288KB

Download
memory/1480-57-0x0000000000000000-mapping.dmp

Download
memory/1480-59-0x0000000010000000-0x0000000010048000-memory.dmp

Filesize
288KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads