xtremerat | a42e3cab17999bcf569f14a234d2507587b035c53759cb3a2ccb313571a3f855

Analysis

max time kernel
152s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
30/10/2022, 18:58

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

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
behavioral2/memory/636-132-0x0000000000000000-mapping.dmp	family_xtremerat
behavioral2/memory/636-133-0x0000000010000000-0x0000000010048000-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
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\Run	a42e3cab17999bcf569f14a234d2507587b035c53759cb3a2ccb313571a3f855.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\jusched.exe = "C:\\Windows\\system32\\avgnt.exe"	a42e3cab17999bcf569f14a234d2507587b035c53759cb3a2ccb313571a3f855.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\jusched.exe = "%jusched%"	a42e3cab17999bcf569f14a234d2507587b035c53759cb3a2ccb313571a3f855.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	a42e3cab17999bcf569f14a234d2507587b035c53759cb3a2ccb313571a3f855.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\jusched.exe = "C:\\Windows\\system32\\avgnt.exe"	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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
632	636	WerFault.exe	79

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3780 wrote to memory of 636	3780	a42e3cab17999bcf569f14a234d2507587b035c53759cb3a2ccb313571a3f855.exe	79
PID 3780 wrote to memory of 636	3780	a42e3cab17999bcf569f14a234d2507587b035c53759cb3a2ccb313571a3f855.exe	79
PID 3780 wrote to memory of 636	3780	a42e3cab17999bcf569f14a234d2507587b035c53759cb3a2ccb313571a3f855.exe	79
PID 3780 wrote to memory of 636	3780	a42e3cab17999bcf569f14a234d2507587b035c53759cb3a2ccb313571a3f855.exe	79

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:3780
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  PID:636
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 636 -s 480
    3⤵
    - Program crash
    PID:632

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 636 -ip 636
1⤵
PID:3208

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

Replay Monitor

Loading Replay Monitor...

Downloads

memory/636-133-0x0000000010000000-0x0000000010048000-memory.dmp

Filesize
288KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads