972697dbd6836d5c3d412151b44effac672fefaff4cb2cce412e19ba257e72d0

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
26-05-2024 03:23

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General

Target

2024-05-26_0abfcb46500bd375132077a7cc7ac9d6_cryptolocker.exe
Size

43KB
MD5

0abfcb46500bd375132077a7cc7ac9d6
SHA1

918d04121ce83b406a99c92c623c255cd1e6a01f
SHA256

972697dbd6836d5c3d412151b44effac672fefaff4cb2cce412e19ba257e72d0
SHA512

956ba6dcbeff50fdd59155904e06bfd7b58ee2e7fb511ed3242b66a33ad083a7e7b6fb8c0ffb74a67450c30b7cce699f61a0529b065f6c248ad5c8f2d08c1837
SSDEEP

768:b/yC4GyNM01GuQMNXw2PSjHPbSuYlW8PAx:b/pYayGig5HjS3NPAx

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000002353a-12.dat	CryptoLocker_rule2

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	2024-05-26_0abfcb46500bd375132077a7cc7ac9d6_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3620	retln.exe

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 1380 wrote to memory of 3620	1380	2024-05-26_0abfcb46500bd375132077a7cc7ac9d6_cryptolocker.exe	90
PID 1380 wrote to memory of 3620	1380	2024-05-26_0abfcb46500bd375132077a7cc7ac9d6_cryptolocker.exe	90
PID 1380 wrote to memory of 3620	1380	2024-05-26_0abfcb46500bd375132077a7cc7ac9d6_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-05-26_0abfcb46500bd375132077a7cc7ac9d6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-26_0abfcb46500bd375132077a7cc7ac9d6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1380
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  PID:3620

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=4152,i,6166776566165096562,4582328833313060853,262144 --variations-seed-version --mojo-platform-channel-handle=3628 /prefetch:8
1⤵
PID:4668

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\retln.exe

Filesize
44KB

MD5
7c435fbe6d625e5b26649a7ca5116246

SHA1
2380b3c1132104899a479205bf508cb9bf19ad8e

SHA256
450ff84c9b2dd265eee4413b2f2b2bd9dbd244e0a6ea4390798bdd626d50cd69

SHA512
60a4688f30c921f95856f4538db34df456447043373ebd1a925abe631a14e8b9582bba6247cc60ff182c5eb70cd330052cbc1f2b9a732391ab69567bbbb89fc6

Download Submit
memory/1380-0-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download
memory/1380-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1380-8-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download
memory/3620-25-0x0000000001FD0000-0x0000000001FD6000-memory.dmp

Filesize
24KB

Download