993d5c521f70f44225b456699336c3513de46c94c17d4beb907045642f2e10dd

Analysis

max time kernel
153s
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
14/05/2024, 03:45

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General

Target

2024-05-14_4bc03cbb478abd5e0be9aca7149450bb_cryptolocker.exe
Size

37KB
MD5

4bc03cbb478abd5e0be9aca7149450bb
SHA1

dad662f83905695a9d9c6059ef97f211354f289e
SHA256

993d5c521f70f44225b456699336c3513de46c94c17d4beb907045642f2e10dd
SHA512

dc3cd41fd998ab2e3cbc38133b6114e253347c89b3ffbf884989e221521809d51252e1309f713c549c205aa3b1508feb260082d3e27d99edf3d28e6c28a3ac5b
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznHzl6A0X/EIjxua6s2:b/yC4GyNM01GuQMNXw2PSjH+PPxAs2

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000002325f-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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-05-14_4bc03cbb478abd5e0be9aca7149450bb_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3572	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 4764 wrote to memory of 3572	4764	2024-05-14_4bc03cbb478abd5e0be9aca7149450bb_cryptolocker.exe	93
PID 4764 wrote to memory of 3572	4764	2024-05-14_4bc03cbb478abd5e0be9aca7149450bb_cryptolocker.exe	93
PID 4764 wrote to memory of 3572	4764	2024-05-14_4bc03cbb478abd5e0be9aca7149450bb_cryptolocker.exe	93

C:\Users\Admin\AppData\Local\Temp\2024-05-14_4bc03cbb478abd5e0be9aca7149450bb_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-14_4bc03cbb478abd5e0be9aca7149450bb_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4764
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  PID:3572

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=4420 --field-trial-handle=3084,i,4016110471176367543,14287608422419064331,262144 --variations-seed-version /prefetch:8
1⤵
PID:828

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
37KB

MD5
26143f6c6c7032de9ae23df1811b760d

SHA1
9ecc7f4904b6ecfdc044ab262b7e1a26dbeaed6d

SHA256
76189b5613d760a0ba758b2239d7d94503a467ad4280eef8ae30d030330a69a8

SHA512
dc8cc2716e2fb23a7c89b21a49808f4607348101dfcfc8fc3f7d2bc4097e383e2f48c68a8cbfb99f4de0db9afa30d944f9e60fb34c9d5e17df39c8713f1a294a

Download Submit
memory/3572-25-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/4764-0-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/4764-1-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/4764-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download