93bfdc4c7d1fa4087ba16d2ff0146acc49c5a9ecd1a88df297d92ab0175b7fa6

Analysis

max time kernel
154s
max time network
164s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
04-05-2024 19:52

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General

Target

2024-05-04_d3576fd7201e5dcfe704481440491143_cryptolocker.exe
Size

47KB
MD5

d3576fd7201e5dcfe704481440491143
SHA1

45af60514753e6fecbe438bdd713a13338e50f9f
SHA256

93bfdc4c7d1fa4087ba16d2ff0146acc49c5a9ecd1a88df297d92ab0175b7fa6
SHA512

c050dea35da9b42c35da124f6a7a3b9375a9aa1b5be297f4c8da59039e391998f70cd49e43691b76bdb67792e6e9bb67c38eae7427e723ab8b2e19551f6b9f29
SSDEEP

768:79inqyNR/QtOOtEvwDpjBKccJVODvccwDF2f:79mqyNhQMOtEvwDpjBzck1W8f

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/1312-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002323c-13.dat	CryptoLocker_rule2
behavioral2/memory/1312-25-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/1312-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000002323c-13.dat	CryptoLocker_set1
behavioral2/memory/1312-25-0x0000000000500000-0x000000000050F000-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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-05-04_d3576fd7201e5dcfe704481440491143_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2748	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 1312 wrote to memory of 2748	1312	2024-05-04_d3576fd7201e5dcfe704481440491143_cryptolocker.exe	90
PID 1312 wrote to memory of 2748	1312	2024-05-04_d3576fd7201e5dcfe704481440491143_cryptolocker.exe	90
PID 1312 wrote to memory of 2748	1312	2024-05-04_d3576fd7201e5dcfe704481440491143_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-05-04_d3576fd7201e5dcfe704481440491143_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-04_d3576fd7201e5dcfe704481440491143_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1312
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2748

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=4080 --field-trial-handle=2252,i,16504368816373493055,9578615028378602855,262144 --variations-seed-version /prefetch:8
1⤵
PID:1200

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
47KB

MD5
21b3ee79adbe51cbfa311eac8e2cc343

SHA1
1c69f0e55e8585336fc9841c8e617e67dce5d813

SHA256
95920ae25ef79bdbfde3ca511aed1cfabd905d052a88cec8ab424ef218298546

SHA512
9bb8f955f0245d2f2a4eb96547ed4604ea82d76f7a697b520c1e363846bbbe85e129b1ee90735cb5358b4a057eec2aeb65868261af1c3044ba55a965e7aec674

Download Submit
memory/1312-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1312-1-0x0000000002310000-0x0000000002316000-memory.dmp

Filesize
24KB

Download
memory/1312-2-0x0000000002310000-0x0000000002316000-memory.dmp

Filesize
24KB

Download
memory/1312-3-0x0000000002220000-0x0000000002226000-memory.dmp

Filesize
24KB

Download
memory/1312-25-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2748-18-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/2748-19-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download