b517d5762559f241ede30f66292381ef5809d9ecb75eba575e2d6e4504d944c7

Analysis

max time kernel
145s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
28/05/2024, 02:12

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General

Target

b517d5762559f241ede30f66292381ef5809d9ecb75eba575e2d6e4504d944c7.exe
Size

134KB
MD5

82737040421b7a437182261bec6e5fda
SHA1

57b95b4f5b666426978e5655917850b23d44686e
SHA256

b517d5762559f241ede30f66292381ef5809d9ecb75eba575e2d6e4504d944c7
SHA512

30b5378db38f35488d767ee56b220b311872cafa7a7aeca50ae8e811069ce86ad95ce72d9bbfd9ce40913b66db6349401a571f156e830f879e7cc5cc96989dad
SSDEEP

1536:cGYU/W2/HG6QMauSV3ixJHABLrmhH7i99ROOg00GqMIK7aGZh3EIL:cfU/WF6QMauSuiWNi97Ol0007NZ6IL

Score

9^/10

persistence upx

Malware Config

Signatures

UPX dump on OEP (original entry point) 6 IoCs

resource	yara_rule
behavioral2/memory/4300-0-0x0000000000270000-0x0000000000298000-memory.dmp	UPX
behavioral2/files/0x0008000000023430-3.dat	UPX
behavioral2/memory/3836-5-0x00000000008C0000-0x00000000008E8000-memory.dmp	UPX
behavioral2/memory/4300-6-0x0000000000270000-0x0000000000298000-memory.dmp	UPX
behavioral2/memory/3836-7-0x00000000008C0000-0x00000000008E8000-memory.dmp	UPX
behavioral2/memory/4300-8-0x0000000000270000-0x0000000000298000-memory.dmp	UPX

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	b517d5762559f241ede30f66292381ef5809d9ecb75eba575e2d6e4504d944c7.exe

Executes dropped EXE 1 IoCs

pid	Process
3836	wuauclt.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4300-0-0x0000000000270000-0x0000000000298000-memory.dmp	upx
behavioral2/files/0x0008000000023430-3.dat	upx
behavioral2/memory/3836-5-0x00000000008C0000-0x00000000008E8000-memory.dmp	upx
behavioral2/memory/4300-6-0x0000000000270000-0x0000000000298000-memory.dmp	upx
behavioral2/memory/3836-7-0x00000000008C0000-0x00000000008E8000-memory.dmp	upx
behavioral2/memory/4300-8-0x0000000000270000-0x0000000000298000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Window Update = "\"C:\\ProgramData\\Update\\wuauclt.exe\" /run"	b517d5762559f241ede30f66292381ef5809d9ecb75eba575e2d6e4504d944c7.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4300 wrote to memory of 3836	4300	b517d5762559f241ede30f66292381ef5809d9ecb75eba575e2d6e4504d944c7.exe	82
PID 4300 wrote to memory of 3836	4300	b517d5762559f241ede30f66292381ef5809d9ecb75eba575e2d6e4504d944c7.exe	82
PID 4300 wrote to memory of 3836	4300	b517d5762559f241ede30f66292381ef5809d9ecb75eba575e2d6e4504d944c7.exe	82
PID 4300 wrote to memory of 3128	4300	b517d5762559f241ede30f66292381ef5809d9ecb75eba575e2d6e4504d944c7.exe	94
PID 4300 wrote to memory of 3128	4300	b517d5762559f241ede30f66292381ef5809d9ecb75eba575e2d6e4504d944c7.exe	94
PID 4300 wrote to memory of 3128	4300	b517d5762559f241ede30f66292381ef5809d9ecb75eba575e2d6e4504d944c7.exe	94

C:\Users\Admin\AppData\Local\Temp\b517d5762559f241ede30f66292381ef5809d9ecb75eba575e2d6e4504d944c7.exe
"C:\Users\Admin\AppData\Local\Temp\b517d5762559f241ede30f66292381ef5809d9ecb75eba575e2d6e4504d944c7.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4300
- C:\ProgramData\Update\wuauclt.exe
  "C:\ProgramData\Update\wuauclt.exe" /run
  2⤵
  - Executes dropped EXE
  PID:3836
- C:\windows\SysWOW64\cmd.exe
  "C:\windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\b517d5762559f241ede30f66292381ef5809d9ecb75eba575e2d6e4504d944c7.exe" >> NUL
  2⤵
  PID:3128

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\Update\wuauclt.exe

Filesize
134KB

MD5
3ec70d76be2c8bc820763407b1f054b0

SHA1
96b1a536f4a1c2e94a097f30980be0c9fb1a34ee

SHA256
e9ff0e32082327769e507ac5b031d6d831ca9f00bfd2572f3b8c4897f2ad638b

SHA512
5c699313a91053146301343a8e26650f830e9c4c87696898cc33901c9516c7b88cfc2c3d52a9ab567f7ab7632eaaa43b83746fbc2f123ba8b88dd9911fc4370a

Download Submit
memory/3836-5-0x00000000008C0000-0x00000000008E8000-memory.dmp

Filesize
160KB

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memory/3836-7-0x00000000008C0000-0x00000000008E8000-memory.dmp

Filesize
160KB

Download
memory/4300-0-0x0000000000270000-0x0000000000298000-memory.dmp

Filesize
160KB

Download
memory/4300-6-0x0000000000270000-0x0000000000298000-memory.dmp

Filesize
160KB

Download
memory/4300-8-0x0000000000270000-0x0000000000298000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads