0fedb45572b2f1ed86f4f8a0bbe5002d01903b16e0b6d1ded33ef76bbb025d7c

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
01-06-2024 21:00

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General

Target

2024-06-01_dd89fe3a1d7fb8e8e3f48b6dd61cd78a_cryptolocker.exe
Size

24KB
MD5

dd89fe3a1d7fb8e8e3f48b6dd61cd78a
SHA1

de2800e7e22cc0f69c64cb06a458199140130681
SHA256

0fedb45572b2f1ed86f4f8a0bbe5002d01903b16e0b6d1ded33ef76bbb025d7c
SHA512

a7e370a3a0cda12bd33335ddc077705d2f2dc4d1e110ff17317f58f2e15c467ff4966e16e828688eda2d68bcdb90b05cefe34b02925e1e7c9f647c9df9123e6b
SSDEEP

384:bVCPwFRuFn65arz1ZhdaXFXSCVQTLfjDp6HMJU:bVCPwFRo6CpwXFXSqQXfjAsJU

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/3612-0-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002353d-13.dat	CryptoLocker_rule2
behavioral2/memory/2856-16-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3612-17-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2856-27-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/3612-0-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
behavioral2/files/0x000800000002353d-13.dat	UPX
behavioral2/memory/2856-16-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
behavioral2/memory/3612-17-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
behavioral2/memory/2856-27-0x0000000008000000-0x000000000800E000-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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	2024-06-01_dd89fe3a1d7fb8e8e3f48b6dd61cd78a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2856	hasfj.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3612-0-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral2/files/0x000800000002353d-13.dat	upx
behavioral2/memory/2856-16-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral2/memory/3612-17-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral2/memory/2856-27-0x0000000008000000-0x000000000800E000-memory.dmp	upx

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3612 wrote to memory of 2856	3612	2024-06-01_dd89fe3a1d7fb8e8e3f48b6dd61cd78a_cryptolocker.exe	90
PID 3612 wrote to memory of 2856	3612	2024-06-01_dd89fe3a1d7fb8e8e3f48b6dd61cd78a_cryptolocker.exe	90
PID 3612 wrote to memory of 2856	3612	2024-06-01_dd89fe3a1d7fb8e8e3f48b6dd61cd78a_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-06-01_dd89fe3a1d7fb8e8e3f48b6dd61cd78a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-01_dd89fe3a1d7fb8e8e3f48b6dd61cd78a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3612
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2856

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 --field-trial-handle=3804,i,6166776566165096562,4582328833313060853,262144 --variations-seed-version --mojo-platform-channel-handle=3960 /prefetch:8
1⤵
PID:4844

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\hasfj.exe

Filesize
24KB

MD5
695eab53ff938ea16687afc422a1cec4

SHA1
f704b21e073d335fecd1adc1b4411fd05b0a9653

SHA256
fe07bae0f90c88992cb7296fff18d8bae54970486f7716e384120131ddf483bd

SHA512
f2d7bfdffe2a80229c2881b236db4b2296cdda7d92f37a479e9cd7c78d399493665d2c0da93da6ca1e80ac6eb685e85d8c928d75dede8b7fd90c885465a5db5b

Download Submit
memory/2856-16-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/2856-20-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/2856-26-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/2856-27-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/3612-0-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/3612-1-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/3612-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/3612-9-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/3612-17-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download