ed7522324ce0960601ee5ac27064617369b869a298796747b4ede2925fd5d1d9

Analysis

max time kernel
146s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
26/03/2024, 21:27

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General

Target

2024-03-26_2b5e7e66cd70a4c14f3b87d9d0d4ba41_cryptolocker.exe
Size

53KB
MD5

2b5e7e66cd70a4c14f3b87d9d0d4ba41
SHA1

fbc1aaa7b72a59549f99825cb0b0d502f0b43740
SHA256

ed7522324ce0960601ee5ac27064617369b869a298796747b4ede2925fd5d1d9
SHA512

a46d5d8a6e1335fa35f04ef2f12023443f92abdcfdccfda7a860f855b478d29aacb3d9759755b56ac05d61b7f06965aa9823448eebfd20bfa312c446a1dff816
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vaTiSfQaV2Lv:X6QFElP6n+gJBMOtEvwDpjBtE1yILv

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002326c-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002326c-12.dat	CryptoLocker_set1

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	2024-03-26_2b5e7e66cd70a4c14f3b87d9d0d4ba41_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1704	asih.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 4900 wrote to memory of 1704	4900	2024-03-26_2b5e7e66cd70a4c14f3b87d9d0d4ba41_cryptolocker.exe	97
PID 4900 wrote to memory of 1704	4900	2024-03-26_2b5e7e66cd70a4c14f3b87d9d0d4ba41_cryptolocker.exe	97
PID 4900 wrote to memory of 1704	4900	2024-03-26_2b5e7e66cd70a4c14f3b87d9d0d4ba41_cryptolocker.exe	97

C:\Users\Admin\AppData\Local\Temp\2024-03-26_2b5e7e66cd70a4c14f3b87d9d0d4ba41_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-26_2b5e7e66cd70a4c14f3b87d9d0d4ba41_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4900
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1704

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=3820 --field-trial-handle=2264,i,15001568551143786084,90255922961447677,262144 --variations-seed-version /prefetch:8
1⤵
PID:1624

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\asih.exe

Filesize
53KB

MD5
8e085028110eba18d433d438963cc507

SHA1
665fb7628504bce2d101efd199a919763d79ffca

SHA256
38cc4f3d329c51f871a6ebe2904ac332b6a5a6238c4e3844f455814d6d2e0799

SHA512
8f5edf0a47d5bd3396d7bd82d083d972c1e5c8ee4c2da91327a7c26aa31a425c6771788e658ca808f621c9064a12b3708f5ca05b9961ebdaa711eadfb90694b1

Download Submit
memory/1704-17-0x0000000001FE0000-0x0000000001FE6000-memory.dmp

Filesize
24KB

Download
memory/1704-18-0x0000000002000000-0x0000000002006000-memory.dmp

Filesize
24KB

Download
memory/4900-0-0x0000000002280000-0x0000000002286000-memory.dmp

Filesize
24KB

Download
memory/4900-1-0x0000000002280000-0x0000000002286000-memory.dmp

Filesize
24KB

Download
memory/4900-2-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download