9018fc7838b21fc58045357ace6271a8282a07915180873e4336058979acc3b4

Analysis

max time kernel
150s
max time network
171s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
14/03/2024, 07:41

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General

Target

2024-03-14_36594b8c893420099f521f1f60e791ed_cryptolocker.exe
Size

44KB
MD5

36594b8c893420099f521f1f60e791ed
SHA1

ff85128829d2472668af075bc295f6c0ac4cedd2
SHA256

9018fc7838b21fc58045357ace6271a8282a07915180873e4336058979acc3b4
SHA512

a53c70a4b8add034d76d9825ca7bc2054166cf49471e2381a1c0261cde1b3e8e252651bf2acabffab9b9dc8b8ca038aa3480205c87658f6ff37049721983d03a
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6j4AYsqSh+DETkedm+YUS5C:YGzl5wjRQBBOsP1QMOtEvwDpjl39+D+j

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/3088-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000001db2a-13.dat	CryptoLocker_rule2
behavioral2/memory/3088-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/3088-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000001db2a-13.dat	CryptoLocker_set1
behavioral2/memory/3088-17-0x0000000000500000-0x000000000050B000-memory.dmp	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-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation	2024-03-14_36594b8c893420099f521f1f60e791ed_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3236	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 3088 wrote to memory of 3236	3088	2024-03-14_36594b8c893420099f521f1f60e791ed_cryptolocker.exe	95
PID 3088 wrote to memory of 3236	3088	2024-03-14_36594b8c893420099f521f1f60e791ed_cryptolocker.exe	95
PID 3088 wrote to memory of 3236	3088	2024-03-14_36594b8c893420099f521f1f60e791ed_cryptolocker.exe	95

C:\Users\Admin\AppData\Local\Temp\2024-03-14_36594b8c893420099f521f1f60e791ed_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-14_36594b8c893420099f521f1f60e791ed_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3088
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3236

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=3360 --field-trial-handle=2284,i,2771196087253062161,8107167670425198948,262144 --variations-seed-version /prefetch:8
1⤵
PID:4912

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
44KB

MD5
d4905426edc2deef99c33e40033ae59e

SHA1
b968c34bedff3bdbfb52a091e668e8b28388a470

SHA256
5ca349e66dae97cecc3a6d4a68ca7435732a123cb1ac80b6e31e5e77dc4430cd

SHA512
12c5555e542c2f3cd897aba151f5a917e47983532d54e4f4eb5fd6a556229843440837e6c0aa88128f4f80900f505ec534bf07b03f73ec102fc11a017df79fff

Download Submit
memory/3088-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3088-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3088-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3088-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/3088-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3236-19-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/3236-24-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download