a96d3a11353b9b38b396cc4028c0dd247c49d20bf551f1b7806d3f53fb742ddb

Analysis

max time kernel
142s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
24/05/2024, 01:37

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General

Target

a96d3a11353b9b38b396cc4028c0dd247c49d20bf551f1b7806d3f53fb742ddb.exe
Size

39KB
MD5

08701582f647beed95c29f7e391b0501
SHA1

9f6f7b2701d81a5c484e7c383c4b258a6898dbac
SHA256

a96d3a11353b9b38b396cc4028c0dd247c49d20bf551f1b7806d3f53fb742ddb
SHA512

e7e3244556584d064489b77fc2d493c954cb4811b4fe53eb50c46bd1f355fade77a9a2109c3243f1ece71bd34089c847551a1036c42eba0b7dd212e8281a8f0f
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYan8l2+:qDdFJy3QMOtEvwDpjjWMl7Tdn8T

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3012-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023252-13.dat	CryptoLocker_rule2
behavioral2/memory/3012-24-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1712-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3012-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0008000000023252-13.dat	CryptoLocker_set1
behavioral2/memory/3012-24-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1712-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/3012-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x0008000000023252-13.dat	UPX
behavioral2/memory/3012-24-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/1712-27-0x0000000000500000-0x0000000000510000-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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	a96d3a11353b9b38b396cc4028c0dd247c49d20bf551f1b7806d3f53fb742ddb.exe

Executes dropped EXE 1 IoCs

pid	Process
1712	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3012-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0008000000023252-13.dat	upx
behavioral2/memory/3012-24-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1712-27-0x0000000000500000-0x0000000000510000-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 3012 wrote to memory of 1712	3012	a96d3a11353b9b38b396cc4028c0dd247c49d20bf551f1b7806d3f53fb742ddb.exe	90
PID 3012 wrote to memory of 1712	3012	a96d3a11353b9b38b396cc4028c0dd247c49d20bf551f1b7806d3f53fb742ddb.exe	90
PID 3012 wrote to memory of 1712	3012	a96d3a11353b9b38b396cc4028c0dd247c49d20bf551f1b7806d3f53fb742ddb.exe	90

C:\Users\Admin\AppData\Local\Temp\a96d3a11353b9b38b396cc4028c0dd247c49d20bf551f1b7806d3f53fb742ddb.exe
"C:\Users\Admin\AppData\Local\Temp\a96d3a11353b9b38b396cc4028c0dd247c49d20bf551f1b7806d3f53fb742ddb.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3012
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1712

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=3756 --field-trial-handle=2284,i,9807419199535700662,2319175108930815708,262144 --variations-seed-version /prefetch:8
1⤵
PID:4100

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

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Downloads

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

Filesize
39KB

MD5
2df78ae51318358775f44c846c843db8

SHA1
92faa2f47d2bfd0b5f2a813c1154b500f650b769

SHA256
f84342f42fe5db04ee3f862b2ba766a98019d6787d53eb87825a6dd2f1174882

SHA512
c4bda143b6576d3efa797ee779bcc20cb3cd60fff543af4b9af9a1e388bb939469a43263e6be3d6299364fbd9e6db5a3b7fce8d011d9392d0147a83065b69b06

Download Submit
memory/1712-18-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/1712-25-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/1712-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3012-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3012-1-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/3012-2-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/3012-3-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/3012-24-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download